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  • create temporary table from cursor

    - by Claudiu
    Is there any way, in PostgreSQL accessed from Python using SQLObject, to create a temporary table from the results of a cursor? Previously, I had a query, and I created the temporary table directly from the query. I then had many other queries interacting w/ that temporary table. Now I have much more data, so I want to only process 1000 rows at a time or so. However, I can't do CREATE TEMP TABLE ... AS ... from a cursor, not as far as I can see. Is the only thing to do something like: rows = cur.fetchmany(1000); cur2 = conn.cursor() cur2.execute("""CREATE TEMP TABLE foobar (id INTEGER)""") for row in rows: cur2.execute("""INSERT INTO foobar (%d)""" % row) or is there a better way? This seems awfully inefficient.

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  • Strange exception phenomenon in Windows 7

    - by Level 2
    I spot some interesting articles about exception handle in CodeProject http://www.codeproject.com/KB/cpp/seexception.aspx After reading, I decided to do some experiment. The first time I try to execute the following code char *p; p[0] = 0; The program died without question. But After several times when I executed the same problem binary code, it magically did fine. Even the following code is doing well. Any clue or explanation? char *p p[1000] = 'd'; cout<<p[1000]<<endl; My O/S is Windows 7 64bit and compiler is VS2008 rc1.

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  • what mysql table structure is better

    - by Sergey
    I have very complicated search algorithm on my site, so i decided to make a table with cache or maybe all possible results. I wanna ask what structure would be better, or maybe not the one of them? (mySQL) 1) word VARCHAR, results TEXT or BLOB where i'll store ids of found objects (for example 6 chars for each id) 2) word VARCHAR, result INT, but words are not unique now i think i'll have about 200 000 rows in 1) with 1000-10000 ids each row or 200 000 000+ rows in 2) First way takes more storage memory but i think it would be much faster to find 1 unique row among 200 000, than 1000 rows among 200 mln non unique rows i think about index on word column and no sphinx. So that do YOU think? p.s. as always, sorry for my english if it's not very good.

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  • Add time to a Date object in javascript

    - by baiano
    I am trying to add time to a Date object in javascript but am not getting the results that I am expecting. I am trying to pull a timer off of the page and add it to the current time to get the unix timestamp value of when the timer will hit zero. The time on the page is displayed as " HH:MM:SS ". This is what I have: time=getTimerText.split(":"); seconds=(time[0]*3600+time[1]*60+time[2])*1000; to convert the time into milliseconds. fDate=new Date(); fDate.setTime(fDate.getTime()+seconds); add the milliseconds to the javascript timestamp alert(Math.round(fDate.getTime() / 1000)); convert the javascript timestamp to a unix timestamp Since the timer is counting down I should get the same result every time i run the script, but I don't. Can anyone see what I might be doing wrong here?

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  • matplotlib plot window won't appear

    - by user1518837
    I'm using Python 2.7.3 in 64-bit. I installed pandas as well as matplotlib 1.1.1, both for 64-bit. Right now, none of my plots are showing. After attempting to plot from several different dataframes, I gave up in frustration and tried the following first example from http://pandas.pydata.org/pandas-docs/dev/visualization.html: INPUT: import matplotlib.pyplot as plt ts = Series(randn(1000), index=date_range ('1/1/2000', periods=1000)) ts = ts.cumsum() ts.plot() pylab.show() OUTPUT: Axes(0.125,0.1;0.775x0.8) And no plot window appeared. Other StackOverflow threads I've read suggested I might be missing DLLs. Any suggestions?

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  • Long numbers. Division.

    - by user577395
    Hello, world! I have a problem. Today I tried to create a code, which finds Catalan number. But in my program can be long numbers. I found numerator and denominator. But i can't div long numbers! Also, only standard libraries was must use in this program. Help me please. This is my code #include <vector> #include <iostream> using namespace std; int main(int argc, char *argv[]) { const int base = 1000*1000*1000; vector <int> a, b; int n, carry = 0; cin>>n; a.push_back(n); for (int ii=n+2; ii!=(2*n)+1;++ii) { carry = 0; for (size_t i=0; i<a.size() || carry; ++i) { if (i == a.size()) a.push_back (0); long long cur = carry + a[i] * 1ll * ii; a[i] = int (cur % base); carry = int (cur / base); } } while (a.size() > 1 && a.back() == 0) a.pop_back(); b.push_back(n); for (int ii=1; ii!=n+1;++ii) { carry = 0; for (size_t i=0; i<b.size() || carry; ++i) { if (i == b.size()) b.push_back (0); long long cur = carry + b[i] * 1ll * ii; b[i] = int (cur % base); carry = int (cur / base); } } while (b.size() > 1 && b.back() == 0) b.pop_back(); cout<<(a.empty() ? 0 : a.back()); for (int i=(int)a.size()-2; i>=0; --i) cout<<(a[i]); cout<<" "; cout<<(b.empty() ? 0 : b.back()); for (int i=(int)b.size()-2; i>=0; --i) cout<<(b[i]); //system("PAUSE"); cout<<endl; return 0; } P.S. Sorry for my bad english =)

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  • How do you DELETE rows in a mysql table that have a field IN the results of another query?

    - by user354825
    here's what the statement looks like: DELETE FROM videoswatched vw2 WHERE vw2.userID IN ( SELECT vw.userID FROM videoswatched vw JOIN users u ON vw.userID=u.userID WHERE u.companyID = 1000 GROUP BY userID ) that looks decent to me, and the SELECT statement works on its own (producing rows with a single column 'userID'. basically, i want to delete entries in the 'videoswatched' table where the userID in the videoswatched entry, after joining to the users table, is found to have companyID=1000. how can i do this without getting the error in my sql syntax? it says the error is near: vw2 WHERE vw2.userID IN ( SELECT vw.userID FROM videoswatched vw JOIN users u and on line 1. thanks!

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  • is it safe to refactor my django models?

    - by Johnd
    My model is similar to this. Is this ok or should I make the common base class abstract? What are the differcenes between this or makeing it abstract and not having an extra table? It seems odd that there is only one primary key now that I have factored stuff out. class Input(models.Model): details = models.CharField(max_length=1000) user = models.ForeignKey(User) pub_date = models.DateTimeField('date published') rating = models.IntegerField() def __unicode__(self): return self.details class Case(Input): title = models.CharField(max_length=200) views = models.IntegerField() class Argument(Input): case = models.ForeignKey(Case) side = models.BooleanField() is this ok to factor stuff out intpu Input? I noticed Cases and Arguments share a primary Key. like this: CREATE TABLE "cases_input" ( "id" integer NOT NULL PRIMARY KEY, "details" varchar(1000) NOT NULL, "user_id" integer NOT NULL REFERENCES "auth_user" ("id"), "pub_date" datetime NOT NULL, "rating" integer NOT NULL ) ; CREATE TABLE "cases_case" ( "input_ptr_id" integer NOT NULL PRIMARY KEY REFERENCES "cases_input" ("id"), "title" varchar(200) NOT NULL, "views" integer NOT NULL ) ; CREATE TABLE "cases_argument" ( "input_ptr_id" integer NOT NULL PRIMARY KEY REFERENCES "cases_input" ("id"), "case_id" integer NOT NULL REFERENCES "cases_case" ("input_ptr_id"), "side" bool NOT NULL )

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  • c++ - QListWidget

    - by user1889459
    I created a working QListWidget with multiple items, but I can't figure out how to make it user-friendly. It looks like this: 1000 1001 1002 ... But I want it to look like this, where firt 4 numbers have a meaning, while all the rest info is just for user. 1000 Name LastName and some other helpful info 1001 tom jeff smallville 1002 ming vase, 1992 ... For example, this line fotoId = ui->devices->currentItem()->text().toInt(); should give me same result in both cases.

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  • directory and file related doubts??

    - by kaushik
    i have a directory with around 1000 files....i want to run a same code for each of these file... my code requires the file name to be inputted. i have written code to copy the information of one into other in other format... please suggest a method to copy all 1000 files one by one without need to change the file name every time and i have a field serial_num which need to be continous i.e if 1st file has upto 30 then while coping other file it should continue from 30not from 0 again require suggestion please thanks..

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  • Most efficient way to maintain a 'set' in SQL Server?

    - by SEVEN YEAR LIBERAL ARTS DEGREE
    I have ~2 million rows or so of data, each row with an artificial PK, and two Id fields (so: PK, ID1, ID2). I have a unique constraint (and index) on ID1+ID2. I get two sorts of updates, both with a distinct ID1 per update. 100-1000 rows of all-new data (ID1 is new) 100-1000 rows of largely, but not necessarily completely overlapping data (ID1 already exists, maybe new ID1+ID2 pairs) What's the most efficient way to maintain this 'set'? Here are the options as I see them: Delete all the rows with ID1, insert all the new rows (yikes) Query all the existing rows from the set of new data ID1+ID2, only insert the new rows Insert all the new rows, ignore inserts that trigger unique constraint violations Any thoughts?

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  • JQuery get element from a string problem

    - by SLC
    Sorry for such a simple question but I can't seem to find the solution. I am trying to fade in and out some divs. Divs have an ID of "div1", "div2", "div3". My code is: var Divs = new Array("div1", "div2", "div3"); I want to fade out one div and then fade in the next on top of it. I have a setinterval that runs every 5 seconds and checked it works. Inside it is this code: $(Divs[1]).fadeOut(1000); $(Divs[2]).fadeIn(1000); However nothing happens when the timer method is ran. Any ideas?

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  • Can you have multiple interpolators on a single view when using ViewPropertyAnimator?

    - by steven
    For example, I would like to animate a view such that it moves down in the y direction while decelerating, and at the same time it undergoes an alpha change linearly. The code would look something like this: myView.animate().translationY(100).setDuration(1000).setInterpolator(new DecelerateInterpolator()); myView.animate().alpha(1).setDuration(1000).setInterpolator(new LinearInterpolator()); This does not work of course because the LinearInterpolator overwrites the DecelerateInterpolator. Is there a way to have one interpolator for the translation part of the animation and a different interpolator for the alpha part? I am aware that this can be accomplished using ObjectAnimator or an AnimationSet, but my question is about whether it can be done using the much cleaner ViewPropertyAnimator.

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  • Linq to Sql GroupJoin Paging oddity

    - by OllyA
    I have noticed a strange Sql Translation in a LinqToSql Query I was trying to optimise. If I execute the following Recipients.GroupJoin( RecipientAttributes, x => x.Recipient_Id, y => y.Recipient_Id, (x,y) => new {Recipient = x, Attributes = y}) .Skip(1) .Take(1000) It executes in a single query as expected. However Recipients.GroupJoin( RecipientAttributes, x => x.Recipient_Id, y => y.Recipient_Id, (x,y) => new {Recipient = x, Attributes = y}) .Skip(0) .Take(1000) executes in a separate query for each Attributes selection. Removing the Skip(0) makes no difference either. Can anyone explain this and is there something I can do to get the first page query executing in a single sql statement?

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  • C# log base 10 and rounding up to nearest power of 10?

    - by Tom
    Hi, if i have a number between 100 and 1000 i want to get the value 3 because 10^3 = 1000. Likewise, if i had a number between 10 and 100 i would want to get the value 2, because 10^2 is 100. Incase you're wondering, its to do with calculating a probability and i always need to divide through by 10^value, to keep the probability between 0 and 1. For example if i calculate 9256, i need to divide through by 10^4, so that i get a probability of 0.92 I'm not sure how to do the rounding up and how to do the base 10, could someone please help?

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  • Dynamically choosing css property in animation

    - by paddywhack
    Hi, It seems a straightforward thing but I'm not having much success. I'm just implementing a simple animation moving a div left or up using animate() but I would like to be able to set the "top" and "left" css properties dynamically. I would like to use the same function rather than have to have two, one for "left" and one for "top". Here's some code which gives the idea. function test($element){ $element.click(function(){ var cssProperty; var direction = "left"; var moveTo = "100px"; if (direction === "top") { cssProperty = "top"; } else { cssProperty = "left"; } /*Using variable as CSS property - This doesn't work */ $(this).animate({ cssProperty: moveTo }, 1000); /*Using variable as the CSS Values - This does */ $(this).animate({ left: moveTo }, 1000); }); } Variables works on the css value side but not on the css selector side. Anyone have any suggestions? Thanks

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  • Problem with sockets in C#

    - by depo
    Socket socket = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp); ... socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 1000); ... socket.Send(bytesSent, bytesSent.Length, 0); ... bytes = socket.Receive(bytesReceived, bytesReceived.Length, 0); After socket has sent the data, server does not respond so that program waits for response. How to stop receiving data after 1000 miliseconds? ?

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  • Calling a constructor to reinitialize variables doesn't seem to work?

    - by Matt
    I wanted to run 1,000 iterations of a program, so set a counter for 1000 in main. I needed to reinitialize various variables after each iteration, and since the class constructor had all the initializations already written out - I decided to call that after each iteration, with the result of each iteration being stored in a variable in main. However, when I called the constructor, it had no effect...it took me a while to figure out - but it didn't reinitialize anything! I created a function exactly like the constructor - so the object would have its own version. When I called that, it reinitialized everything as I expected. int main() { Class MyClass() int counter = 0; while ( counter < 1000 ) { stuff happens } Class(); // This is how I tried to call the constructor initially. // After doing some reading here, I tried: // Class::Class(); // - but that didn't work either /* Later I used... MyClass.function_like_my_constructor; // this worked perfectly */ } ...Could someone try to explain why what I did was wrong, or didn't work, or was silly or what have you? I mean - mentally, I just figured - crap, I can call this constructor and have all this stuff reinitialized. Are constructors (ideally) ONLY called when an object is created?

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  • how to aggregate information on UIImage?

    - by user1582281
    I want to draw on each drawing cycle 1000 more lines on my UIIMage, right now I do it by : -(void)drawRect { for(int i=0;i<1000;i++) { UIGraphicsBeginImageContext(myImage.size); code to draw line on current context... draw previous info from myImage: [myImage drawInRect:myRect]; //store info from context back to myImage myImage=UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); } //append the image on the right side of current context: [myImage drawInRect:myRightRect]; } problem is that I think that drawing entire image each time just for the few lines added is very expensive, anyone has any idea how to optimize it?

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  • XElement return node value

    - by theDawckta
    I have an XElement that looks like this; <VideoFiles> <VideoFileInfo> <VideoType>1000</VideoType> <FormatCode>1000</FormatCode> <Url>http://www.idontwantthisvalue.com</Url> </VideoFileInfo> <VideoFileInfo> <VideoType>WMVOriginal</VideoType> <FormatCode>1004</FormatCode> <Url>http://www.iwanthitsvalue.com</Url> </VideoFile> I need to grab the value that has a sibling with a value of 1004. Can anyone help on this?

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  • Metro: Promises

    - by Stephen.Walther
    The goal of this blog entry is to describe the Promise class in the WinJS library. You can use promises whenever you need to perform an asynchronous operation such as retrieving data from a remote website or a file from the file system. Promises are used extensively in the WinJS library. Asynchronous Programming Some code executes immediately, some code requires time to complete or might never complete at all. For example, retrieving the value of a local variable is an immediate operation. Retrieving data from a remote website takes longer or might not complete at all. When an operation might take a long time to complete, you should write your code so that it executes asynchronously. Instead of waiting for an operation to complete, you should start the operation and then do something else until you receive a signal that the operation is complete. An analogy. Some telephone customer service lines require you to wait on hold – listening to really bad music – until a customer service representative is available. This is synchronous programming and very wasteful of your time. Some newer customer service lines enable you to enter your telephone number so the customer service representative can call you back when a customer representative becomes available. This approach is much less wasteful of your time because you can do useful things while waiting for the callback. There are several patterns that you can use to write code which executes asynchronously. The most popular pattern in JavaScript is the callback pattern. When you call a function which might take a long time to return a result, you pass a callback function to the function. For example, the following code (which uses jQuery) includes a function named getFlickrPhotos which returns photos from the Flickr website which match a set of tags (such as “dog” and “funny”): function getFlickrPhotos(tags, callback) { $.getJSON( "http://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?", { tags: tags, tagmode: "all", format: "json" }, function (data) { if (callback) { callback(data.items); } } ); } getFlickrPhotos("funny, dogs", function(data) { $.each(data, function(index, item) { console.log(item); }); }); The getFlickr() function includes a callback parameter. When you call the getFlickr() function, you pass a function to the callback parameter which gets executed when the getFlicker() function finishes retrieving the list of photos from the Flickr web service. In the code above, the callback function simply iterates through the results and writes each result to the console. Using callbacks is a natural way to perform asynchronous programming with JavaScript. Instead of waiting for an operation to complete, sitting there and listening to really bad music, you can get a callback when the operation is complete. Using Promises The CommonJS website defines a promise like this (http://wiki.commonjs.org/wiki/Promises): “Promises provide a well-defined interface for interacting with an object that represents the result of an action that is performed asynchronously, and may or may not be finished at any given point in time. By utilizing a standard interface, different components can return promises for asynchronous actions and consumers can utilize the promises in a predictable manner.” A promise provides a standard pattern for specifying callbacks. In the WinJS library, when you create a promise, you can specify three callbacks: a complete callback, a failure callback, and a progress callback. Promises are used extensively in the WinJS library. The methods in the animation library, the control library, and the binding library all use promises. For example, the xhr() method included in the WinJS base library returns a promise. The xhr() method wraps calls to the standard XmlHttpRequest object in a promise. The following code illustrates how you can use the xhr() method to perform an Ajax request which retrieves a file named Photos.txt: var options = { url: "/data/photos.txt" }; WinJS.xhr(options).then( function (xmlHttpRequest) { console.log("success"); var data = JSON.parse(xmlHttpRequest.responseText); console.log(data); }, function(xmlHttpRequest) { console.log("fail"); }, function(xmlHttpRequest) { console.log("progress"); } ) The WinJS.xhr() method returns a promise. The Promise class includes a then() method which accepts three callback functions: a complete callback, an error callback, and a progress callback: Promise.then(completeCallback, errorCallback, progressCallback) In the code above, three anonymous functions are passed to the then() method. The three callbacks simply write a message to the JavaScript Console. The complete callback also dumps all of the data retrieved from the photos.txt file. Creating Promises You can create your own promises by creating a new instance of the Promise class. The constructor for the Promise class requires a function which accepts three parameters: a complete, error, and progress function parameter. For example, the code below illustrates how you can create a method named wait10Seconds() which returns a promise. The progress function is called every second and the complete function is not called until 10 seconds have passed: (function () { "use strict"; var app = WinJS.Application; function wait10Seconds() { return new WinJS.Promise(function (complete, error, progress) { var seconds = 0; var intervalId = window.setInterval(function () { seconds++; progress(seconds); if (seconds > 9) { window.clearInterval(intervalId); complete(); } }, 1000); }); } app.onactivated = function (eventObject) { if (eventObject.detail.kind === Windows.ApplicationModel.Activation.ActivationKind.launch) { wait10Seconds().then( function () { console.log("complete") }, function () { console.log("error") }, function (seconds) { console.log("progress:" + seconds) } ); } } app.start(); })(); All of the work happens in the constructor function for the promise. The window.setInterval() method is used to execute code every second. Every second, the progress() callback method is called. If more than 10 seconds have passed then the complete() callback method is called and the clearInterval() method is called. When you execute the code above, you can see the output in the Visual Studio JavaScript Console. Creating a Timeout Promise In the previous section, we created a custom Promise which uses the window.setInterval() method to complete the promise after 10 seconds. We really did not need to create a custom promise because the Promise class already includes a static method for returning promises which complete after a certain interval. The code below illustrates how you can use the timeout() method. The timeout() method returns a promise which completes after a certain number of milliseconds. WinJS.Promise.timeout(3000).then( function(){console.log("complete")}, function(){console.log("error")}, function(){console.log("progress")} ); In the code above, the Promise completes after 3 seconds (3000 milliseconds). The Promise returned by the timeout() method does not support progress events. Therefore, the only message written to the console is the message “complete” after 10 seconds. Canceling Promises Some promises, but not all, support cancellation. When you cancel a promise, the promise’s error callback is executed. For example, the following code uses the WinJS.xhr() method to perform an Ajax request. However, immediately after the Ajax request is made, the request is cancelled. // Specify Ajax request options var options = { url: "/data/photos.txt" }; // Make the Ajax request var request = WinJS.xhr(options).then( function (xmlHttpRequest) { console.log("success"); }, function (xmlHttpRequest) { console.log("fail"); }, function (xmlHttpRequest) { console.log("progress"); } ); // Cancel the Ajax request request.cancel(); When you run the code above, the message “fail” is written to the Visual Studio JavaScript Console. Composing Promises You can build promises out of other promises. In other words, you can compose promises. There are two static methods of the Promise class which you can use to compose promises: the join() method and the any() method. When you join promises, a promise is complete when all of the joined promises are complete. When you use the any() method, a promise is complete when any of the promises complete. The following code illustrates how to use the join() method. A new promise is created out of two timeout promises. The new promise does not complete until both of the timeout promises complete: WinJS.Promise.join([WinJS.Promise.timeout(1000), WinJS.Promise.timeout(5000)]) .then(function () { console.log("complete"); }); The message “complete” will not be written to the JavaScript Console until both promises passed to the join() method completes. The message won’t be written for 5 seconds (5,000 milliseconds). The any() method completes when any promise passed to the any() method completes: WinJS.Promise.any([WinJS.Promise.timeout(1000), WinJS.Promise.timeout(5000)]) .then(function () { console.log("complete"); }); The code above writes the message “complete” to the JavaScript Console after 1 second (1,000 milliseconds). The message is written to the JavaScript console immediately after the first promise completes and before the second promise completes. Summary The goal of this blog entry was to describe WinJS promises. First, we discussed how promises enable you to easily write code which performs asynchronous actions. You learned how to use a promise when performing an Ajax request. Next, we discussed how you can create your own promises. You learned how to create a new promise by creating a constructor function with complete, error, and progress parameters. Finally, you learned about several advanced methods of promises. You learned how to use the timeout() method to create promises which complete after an interval of time. You also learned how to cancel promises and compose promises from other promises.

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  • FFSERVER - streaming an ASF video as Webm output

    - by Emmanuel Brunet
    I'm trying to stream an IP webcam ASF live stream to a ffserver to output a webm video format. The server starts successfully but the ffserver commands used to feed the ffserver fails and generates a core dump. Environment Debian 7.5 ffmpeg 2.2 Input stream $ ffprobe http://account:password@webcam/videostream.asf Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, 1 channels, s16p, 32 kb/s ffserver configuration my ffserver configuration is : Port 8091 RTSPPort 554 BindAddress 192.168.1.62 MaxHTTPConnections 1000 MaxClients 100 MaxBandwidth 1000 CustomLog - <Feed webcam.ffm> File /tmp/webcam.ffm FileMaxSize 500M ACL allow localhost ACL allow 192.168.0.0 192.168.255.255 </Feed> <Stream webcam.webm> # Output stream URL definition Feed webcam.ffm # Feed from which to receive video Format webm # Audio settings AudioCodec vorbis AudioBitRate 64 # Audio bitrate # Video settings VideoCodec libvpx VideoSize 640x480 # Video resolution VideoFrameRate 25 # Video FPS AVOptionVideo flags +global_header # Parameters passed to encoder # (same as ffmpeg command-line parameters) AVOptionVideo cpu-used 0 AVOptionVideo qmin 10 AVOptionVideo qmax 42 AVOptionVideo quality good AVOptionAudio flags +global_header PreRoll 15 StartSendOnKey # VideoBitRate 32 # Video bitrate </Stream> <Stream status.html> Format status # Only allow local people to get the status ACL allow localhost ACL allow 192.168.0.0 192.168.255.255 </Stream> ffmpeg feed I run the following command that fails $ ffmpeg -i http://account:password@webcam/videostream.asf http://192.168.1.62:8091/webcam.ffm http://192.168.1.62:8091/webcam.ffm Input #0, asf, from 'http://account:password@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s [swscaler @ 0x36a80c0] deprecated pixel format used, make sure you did set range correctly Segmentation fault I tryed $ ffmpeg -i http://account:password@webcam/videostream.asf -pix_fmt yuv420p http://192.168.1.62:8091/webcam.ffm But it raises the same error. Thanks for your help Edit For an easy testing (I thought), I tried to publish the whole ASF stream as is, meaning connecting the ASF webcam output stream to the ffserver that outputs ASF format too. And thus with mirrored encoding so I changed the ffserver configuration to ... <Stream webcam.asf> Feed webcam.ffm Format asf VideoFrameRate 25 VideoSize 640X480 VideoBitRate 256 VideoBufferSize 1000 VideoGopSize 30 AudioBitRate 32 StartSendOnKey </Stream> ... And the output is now : Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 1k tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s [swscaler @ 0x3d620c0] deprecated pixel format used, make sure you did set range correctly Output #0, ffm, to 'http://192.168.1.62:8091/webcam.ffm': Metadata: creation_time : now encoder : Lavf55.40.100 Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 32 kb/s Metadata: encoder : Lavc55.64.100 wmav2 Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 640x480, q=2-31, 256 kb/s, 1k fps, 1000k tbn, 1k tbc Metadata: Stream mapping: Stream #0:1 -> #0:0 (adpcm_ima_wav -> wmav2) Stream #0:0 -> #0:1 (mjpeg -> msmpeg4) Press [q] to stop, [?] for help Segmentation fault I can't even forward the stream.

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  • xen debian: domU can't get out side

    - by iftol
    hi every body. i'm a trainee as a sysAdmin, it is my first expérience with virtualization. i have a server setup debian xen 3 with 2 physical interfaces. eth 0 for local network 10.0.0.1 and eth1 for internet (194.X.X.4). i created 3 VMs (web server, mail server and dabase server) with local ip addresses 172.10.0.x/24. the problem i had first is that domU can't ping dom0. i asked the sysAdmin of our ISP and he sais that he fogot to setup the bridginb. so he ceated a bridge with 172.10.0.1/24 after that i was able to ping the real server (194.X.X.4). but i can't go out side from my VMs, how can i fixe this issue? real or physical server ifconfig eth0 Link encap:Ethernet HWaddr 23:26:34:84:ce:xe inet adr:10.1.3.12 Bcast:10.1.3.255 Masque:255.255.255.0 adr inet6: fe80::226:b9ff:fe84:ceb4/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:412006 errors:0 dropped:0 overruns:0 frame:0 TX packets:411296 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 RX bytes:31410957 (29.9 MiB) TX bytes:31178370 (29.7 MiB) Interruption:36 Mémoire:d6000000-d6012100 eth1 Link encap:Ethernet HWaddr 23:26:34:84:ce:xe inet adr:194.x.x.4 Bcast:194.254.167.255 Masque:255.255.255.0 adr inet6: fe80::226:b9ff:fe84:ceb6/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:25872332 errors:0 dropped:0 overruns:0 frame:0 TX packets:414578 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 RX bytes:2642278343 (2.4 GiB) TX bytes:35436775 (33.7 MiB) lo Link encap:Boucle locale inet adr:127.0.0.1 Masque:255.0.0.0 adr inet6: ::1/128 Scope:Hôte UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1308073 errors:0 dropped:0 overruns:0 frame:0 TX packets:1308073 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 RX bytes:109871395 (104.7 MiB) TX bytes:109871395 (104.7 MiB) peth1 Link encap:Ethernet HWaddr 23:26:34:84:ce:xe UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:31818694 errors:0 dropped:0 overruns:0 frame:0 TX packets:414818 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:1000 RX bytes:5197318822 (4.8 GiB) TX bytes:37904897 (36.1 MiB) Interruption:48 Mémoire:d8000000-d8012100 vif281.0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff adr inet6: fe80::fcff:ffff:feff:ffff/64 Scope:Lien UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:207 errors:0 dropped:0 overruns:0 frame:0 TX packets:298 errors:0 dropped:2 overruns:0 carrier:0 collisions:0 lg file transmission:32 RX bytes:24629 (24.0 KiB) TX bytes:28404 (27.7 KiB) vif281.1 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff adr inet6: fe80::fcff:ffff:feff:ffff/64 Scope:Lien UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:45 errors:0 dropped:47063 overruns:0 carrier:0 collisions:0 lg file transmission:32 RX bytes:0 (0.0 B) TX bytes:4449 (4.3 KiB) vif282.0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff adr inet6: fe80::fcff:ffff:feff:ffff/64 Scope:Lien UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:78 errors:0 dropped:0 overruns:0 frame:0 TX packets:13 errors:0 dropped:1 overruns:0 carrier:0 collisions:0 lg file transmission:32 RX bytes:5041 (4.9 KiB) TX bytes:714 (714.0 B) xenbr0 Link encap:Ethernet HWaddr fe:ff:ff:ff:ff:ff inet adr:172.10.0.1 Bcast:172.10.0.255 Masque:255.255.255.0 adr inet6: fe80::5c72:c6ff:fe49:7fe/64 Scope:Lien UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7180 errors:0 dropped:0 overruns:0 frame:0 TX packets:8615 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 lg file transmission:0 RX bytes:756804 (739.0 KiB) TX bytes:791206 (772.6 KiB) brtcl show bridge name bridge id STP enabled interfaces eth1 8000.0026b984ceb6 no peth1 vif281.1 xenbr0 8000.feffffffffff no vif281.0 vif282.0 network-multi-bridge /etc/xen/scripts/network-virtual start vifnum="0" bridgeip="172.10.0.1/24" brnet="172.10.0.0/24" VM webserver eth0 Link encap:Ethernet HWaddr 00:16:3E:42:33:70 inet addr:172.10.0.2 Bcast:172.10.0.255 Mask:255.255.255.0 inet6 addr: fe80::216:3eff:fe42:3370/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3 errors:0 dropped:0 overruns:0 frame:0 TX packets:27 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:126 (126.0 b) TX bytes:2036 (1.9 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Thank you for your help.

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  • ffserver-2.2 - streaming an ASF video as Webm output with ffserver on Debian 7.5

    - by Emmanuel Brunet
    I'm trying to stream an IP webcam ASF live stream to a ffserver to output a webm video format. The server starts successfully but the ffserver commands used to feed the ffserver fails and generates a core dump. Input stream $ ffprobe http://account:password@webcam/videostream.asf Input #0, asf, from 'http://account:password@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, 1 channels, s16p, 32 kb/s ffserver configuration my ffserver configuration is : Port 8091 RTSPPort 554 BindAddress 192.168.1.62 MaxHTTPConnections 1000 MaxClients 100 MaxBandwidth 1000 CustomLog - <Feed webcam.ffm> File /tmp/webcam.ffm FileMaxSize 500M ACL allow localhost ACL allow 192.168.0.0 192.168.255.255 </Feed> <Stream webcam.webm> # Output stream URL definition Feed webcam.ffm # Feed from which to receive video Format webm # Audio settings AudioCodec vorbis AudioBitRate 64 # Audio bitrate # Video settings VideoCodec libvpx VideoSize 640x480 # Video resolution VideoFrameRate 25 # Video FPS AVOptionVideo flags +global_header # Parameters passed to encoder # (same as ffmpeg command-line parameters) AVOptionVideo cpu-used 0 AVOptionVideo qmin 10 AVOptionVideo qmax 42 AVOptionVideo quality good AVOptionAudio flags +global_header PreRoll 15 StartSendOnKey # VideoBitRate 32 # Video bitrate </Stream> <Stream status.html> Format status # Only allow local people to get the status ACL allow localhost ACL allow 192.168.0.0 192.168.255.255 </Stream> ffmpeg feed I run the following command that fails $ ffmpeg -i http://account:password@webcam/videostream.asf http://ffserver_ip:port/webcam.ffm http://192.168.1.62:8091/webcam.ffm Input #0, asf, from 'http://account:password@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s [swscaler @ 0x36a80c0] deprecated pixel format used, make sure you did set range correctly Segmentation fault I tryed $ ffmpeg -i http://account:password@webcam/videostream.asf -pix_fmt yuv420p http://ffserver_ip:port/webcam.ffm But it raises the same error. Thanks for your help Edit For an easy testing (I thought), I tried to publish the whole ASF stream as is, meaning connecting the ASF webcam output stream to the ffserver that outputs ASF format too. And thus with mirrored encoding so I changed the ffserver configuration to ... <Stream webcam.asf> Feed webcam.ffm Format asf VideoFrameRate 25 VideoSize 640X480 VideoBitRate 256 VideoBufferSize 1000 VideoGopSize 30 AudioBitRate 32 StartSendOnKey </Stream> ... And the output is now : Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf': Duration: N/A, start: 0.000000, bitrate: 32 kb/s Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 1k tbr, 1k tbn, 1k tbc Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s [swscaler @ 0x3d620c0] deprecated pixel format used, make sure you did set range correctly Output #0, ffm, to 'http://192.168.1.62:8091/webcam.ffm': Metadata: creation_time : now encoder : Lavf55.40.100 Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 32 kb/s Metadata: encoder : Lavc55.64.100 wmav2 Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 640x480, q=2-31, 256 kb/s, 1k fps, 1000k tbn, 1k tbc Metadata: Stream mapping: Stream #0:1 -> #0:0 (adpcm_ima_wav -> wmav2) Stream #0:0 -> #0:1 (mjpeg -> msmpeg4) Press [q] to stop, [?] for help Segmentation fault I can't even forward the stream. Thanks for your help again.

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  • IMAPSync Migration to Exchange 2010 SP1: Exchange drops connections while checking for existence of folders

    - by Benjamin Priestman
    I'm migrating from ZImbra Collaboration Suite to Exchange 2010 SP1. I'm testing IMAPSync as a possible migration tool and have hit a problem with the IMAP server in Exchange 2010. For each account it migrates, IMAPSync loops through the list of folders in the source mailbox and tests for the existence of each one in the destination mailbox. It then goes on to create those folders that do not exist and copy over the messages. It's the intial testing for the existence of the folders that is giving me a problem. The response given by the Exchange server when the folder does not yet exist is given as an error: "R=""16 NO IMAPSyncTest/8 doesn't exist."" After ten of these errors have been issued in succession, the Exchange server appears to stop responding to the IMAP session. Enabling protocol logging for IMAP confirms that the 10th request for a non-existant folder is the last request to be logged on the server. IMAPSync carries on merrily without seeming to realise its connection has gone and thus fails to create any folders. I've logged this with the tool's creator. Does anyone have any idea why Exchange is stopping responding to the connections though? The behaviour looks rather like throttling, although the 'ten strikes and you're out' trigger does not seem to correspond to any of the triggers on the ThrottlingPolicies. Just to check, I've tried creating a new ThrottlingPolicy, turned everything that I think might be relevant up to 11 and applied it to the my test mailbox. Policy settings are listed below, along with IMAP settings. Everything else should be pretty much as default. Throttling Policy RunspaceId : afa3159c-32a6-4906-986f-8adfbe50868b IsDefault : False AnonymousMaxConcurrency : 1 AnonymousPercentTimeInAD : AnonymousPercentTimeInCAS : AnonymousPercentTimeInMailboxRPC : EASMaxConcurrency : 10 EASPercentTimeInAD : EASPercentTimeInCAS : EASPercentTimeInMailboxRPC : EASMaxDevices : 10 EASMaxDeviceDeletesPerMonth : EWSMaxConcurrency : 10 EWSPercentTimeInAD : 50 EWSPercentTimeInCAS : 90 EWSPercentTimeInMailboxRPC : 60 EWSMaxSubscriptions : 5000 EWSFastSearchTimeoutInSeconds : 60 EWSFindCountLimit : 1000 IMAPMaxConcurrency : 1000 IMAPPercentTimeInAD : 400 IMAPPercentTimeInCAS : 400 IMAPPercentTimeInMailboxRPC : 400 OWAMaxConcurrency : 5 OWAPercentTimeInAD : 30 OWAPercentTimeInCAS : 150 OWAPercentTimeInMailboxRPC : 150 POPMaxConcurrency : 20 POPPercentTimeInAD : POPPercentTimeInCAS : POPPercentTimeInMailboxRPC : PowerShellMaxConcurrency : 18 PowerShellMaxTenantConcurrency : PowerShellMaxCmdlets : PowerShellMaxCmdletsTimePeriod : ExchangeMaxCmdlets : PowerShellMaxCmdletQueueDepth : PowerShellMaxDestructiveCmdlets : PowerShellMaxDestructiveCmdletsTimePeriod : RCAMaxConcurrency : 1000 RCAPercentTimeInAD : 400 RCAPercentTimeInCAS : 400 RCAPercentTimeInMailboxRPC : 400 CPAMaxConcurrency : 20 CPAPercentTimeInCAS : 205 CPAPercentTimeInMailboxRPC : 200 MessageRateLimit : RecipientRateLimit : ForwardeeLimit : CPUStartPercent : 75 AdminDisplayName : ExchangeVersion : 0.10 (14.0.100.0) Name : TestMigrationThrottling DistinguishedName : CN=TestMigrationThrottling,CN=Global Settings,CN=Our Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=cimex,DC=com Identity : TestMigrationThrottling Guid : 240049b3-2023-4df1-8edc-fbfc1fc80b87 ObjectCategory : domain.com/Configuration/Schema/ms-Exch-Throttling-Policy ObjectClass : {top, msExchGenericPolicy, msExchThrottlingPolicy} WhenChanged : 21/04/2011 18:48:19 WhenCreated : 21/04/2011 18:07:20 WhenChangedUTC : 21/04/2011 17:48:19 WhenCreatedUTC : 21/04/2011 17:07:20 OrganizationId : OriginatingServer : a-domain-controller IsValid : True IMAPSettings RunspaceId : afa3159c-32a6-4906-986f-8adfbe50868b ProtocolName : IMAP4 Name : 1 MaxCommandSize : 10240 ShowHiddenFoldersEnabled : False UnencryptedOrTLSBindings : {192.168.x.x:143} SSLBindings : {192.168.x.x:993} InternalConnectionSettings : {mail.office.domain.com:143:TLS, mail.office.domain.com:993:SSL} ExternalConnectionSettings : {mail.office.domain.com:143:TLS, mail.office.domain.com:993:SSL} X509CertificateName : mail.domain.com Banner : The Microsoft Exchange IMAP4 service is ready. LoginType : SecureLogin AuthenticatedConnectionTimeout : 00:30:00 PreAuthenticatedConnectionTimeout : 00:01:00 MaxConnections : 2147483647 MaxConnectionFromSingleIP : 2147483647 MaxConnectionsPerUser : 16 MessageRetrievalMimeFormat : BestBodyFormat ProxyTargetPort : 143 CalendarItemRetrievalOption : iCalendar OwaServerUrl : EnableExactRFC822Size : False LiveIdBasicAuthReplacement : False SuppressReadReceipt : False ProtocolLogEnabled : True EnforceCertificateErrors : False LogFileLocation : C:\Program Files\Microsoft\Exchange Server\V14\Logging\Imap4 LogFileRollOverSettings : Daily LogPerFileSizeQuota : 0 B (0 bytes) ExtendedProtectionPolicy : None EnableGSSAPIAndNTLMAuth : True Server : CMX-OFFICE-EX01 AdminDisplayName : ExchangeVersion : 0.10 (14.0.100.0) DistinguishedName : CN=1,CN=IMAP4,CN=Protocols,CN=EXCHANGE01,CN=Servers,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Our COmpany,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=com Identity : EXCHANGE01\1 Guid : 48f9dc37-74c2-4fb0-a042-641f863f45f2 ObjectCategory : domain.com/Configuration/Schema/ms-Exch-Protocol-Cfg-IMAP-Server ObjectClass : {top, protocolCfg, protocolCfgIMAP, protocolCfgIMAPServer} WhenChanged : 21/04/2011 17:03:39 WhenCreated : 15/04/2011 13:51:58 WhenChangedUTC : 21/04/2011 16:03:39 WhenCreatedUTC : 15/04/2011 12:51:58 OrganizationId : OriginatingServer : a-domain-server IsValid : True

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