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• Archiver Securing SQLite Data without using Encryption on iPhone

  - by Redrocks

  I'm developing an iphone app that uses Core Data with a SQLite data store and lots of images in the resource bundle. I want a "simple" way to obfuscate the file structure of the SQLite database and the image files to prevent the casual hacker/unscrupulous developer from gaining access to them. When the app is deployed, the database file and image files would be obfuscated. Upon launching the app it would read in and un-obfuscate the database file, write the un-obfuscated version to the users "tmp" directory for use by core data, and read/un-obfuscate image files as needed. I'd like to apply a simple algorithm to the files that would somehow scramble/manipulate the file data so that the sqlite database data isn't discernible when the db is opened in a text editor and so that neither is recognized by other applications (SQLite Manager, Photoshop, etc.) It seems, from the information I've read, that I could use NSFileManager, NSKeyedArchiver, and NSData to accomplish this but I'm not sure how to proceed. Been developing software for many years but I'm new to everything CocoaTouch, Mac and iPhone. Also never had to secure/encrypt my data so this is new. Any thoughts, suggestions, or links to solutions are appreciated.

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• How to sort data in a table data structure in Java?

  - by rgksugan

  I need to sort data based on the third column of the table data structure. I tried based on the answers for the following question. But my sorting does not work. Please help me in this. Here goes my code. Object[] data = new Object[y]; rst.beforeFirst(); while (rst.next()) { int p_id = Integer.parseInt(rst.getString(1)); String sw2 = "select sum(quantity) from tbl_order_detail where product_id=" + p_id; rst1 = stmt1.executeQuery(sw2); rst1.next(); String sw3 = "select max(order_date) from tbl_order where tbl_order.`Order_ID` in (select tbl_order_detail.`Order_ID` from tbl_order_detail where product_id=" + p_id + ")"; rst2 = stmt2.executeQuery(sw3); rst2.next(); data[i] = new Object[]{new String(rst.getString(2)), new String(rst.getString(3)), new Integer(rst1.getString(1)), new String(rst2.getString(1))}; i++; } ColumnComparator cc = new ColumnComparator(2); Arrays.sort(data, cc); if (i == 0) { table.addCell(""); table.addCell(""); table.addCell(""); table.addCell(""); } else { for (int j = 0; j < y; j++) { Object[] theRow = (Object[]) data[j]; table.addCell((String) theRow[0]); table.addCell((String) theRow[1]); table.addCell((String) theRow[2]); table.addCell((String) theRow[3]); }

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• Moving UITableView cells and maintaining consistent data

  - by Mark F

  I've enabled editing mode and moving cells around to allow users to position table view content in the order they please. I'm using Core Data as the data source, which sorts the content by the attribute "userOrder". When content is first inserted, userOrder is set to a random value. The idea is that when the user moves a cell around, the userOrder of that cell changes to accomodate its new position. The following are problems I am running into while trying to accomplish this: Successfully saving the the new location of the cell and adjusting all changed locations of influenced cells. Getting the data to be consistent. For example, the TableView handles the movement fine, but when i click on the new location of the cell, it displays data for the old cell that used to be that location. Data of all influenced cells gets messed up as well. I know I have to implement this in: - (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath {} I just don't know how. The apple docs are not particularly helpful if you are using Core Data, as in my situation. Any guidance greatly appreciated!

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• iPhone SDK / Core Data usage scenario, similar to GAE data store?

  - by boliva

  Hi all, I am currently rewriting a map based App which I wrote in the past, specifically for 2.2.1 devices. Originally I wrote it to make use of SQLite databases but I would like to try and migrate it over Core Data, now that it's available on 3.X (for which I am rewriting to). I am fairly experienced in iPhone/Obj-C development, SQL and server backend technologies, but I have never had the chance to work with Core Data so IDK really if it's the appropiate tool for what I am trying to accomplish. The App works on a limited area in a map over which there are about 4000 placemarks, with different kinds of icons and sizes. Of course not all 4000 placemarks are shown at once but only those currently visible in the map viewport, and depending on the zoom level. What I am doing right now is, after the user moves the map in any way (panning or zooming) I am requesting from the backend server the required information for the placemarks that would be visible given the viewport coordinates boundaries and zoom level, however the process isn't as smooth as I'd like (the backend is sending its response in XML and I am compressing it using gzip), it takes anywhere from 1 to 3 seconds to update the display of the placemarks after the user ends moving the map. What I would like to do is to prefetch all the placemarks data at the App launch and use it all through the app life time - I don't mind storing it for later use because the data should be dynamic. The way I would do it right now is, after retrieving all the data, to store it on an SQLite db which I would query later, whenever the user moves the map, to return only the placemarks inside the viewport coordinate boundaries and specific to a given zoom level. Now, the question itself is, if is it possible to use some more 'native', object driven way to carry this queries process, which got me thinking about Core Data and if it is in any way similar to what Google App Engine offers through its datastore where you can fetch a number of objects from the backend given a certain query or criteria, without resorting to an SQL query itself. Like I said before I don't have any experience on Core Data but I have a pretty deep understanding of Obj-C and iPhone development, as well as SQL databases. Any guides on how to achieve what I'm trying (if possible at all) would be greatly appreciated.

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• Classifying captured data in unknown format?

  - by monch1962

  I've got a large set of captured data (potentially hundreds of thousands of records), and I need to be able to break it down so I can both classify it and also produce "typical" data myself. Let me explain further... If I have the following strings of data: 132T339G1P112S 164T897F5A498S 144T989B9B223T 155T928X9Z554T ... you might start to infer the following: possibly all strings are 14 characters long the 4th, 8th, 10th and 14th characters may always be alphas, while the rest are numeric the first character may always be a '1' the 4th character may always be the letter 'T' the 14th character may be limited to only being 'S' or 'T' and so on... As you get more and more samples of real data, some of these "rules" might disappear; if you see a 15 character long string, then you have evidence that the 1st "rule" is incorrect. However, given a sufficiently large sample of strings that are exactly 14 characters long, you can start to assume that "all strings are 14 characters long" and assign a numeric figure to your degree of confidence (with an appropriate set of assumptions around the fact that you're seeing a suitably random set of all possible captured data). As you can probably tell, a human can do a lot of this classification by eye, but I'm not aware of libraries or algorithms that would allow a computer to do it. Given a set of captured data (significantly more complex than the above...), are there libraries that I can apply in my code to do this sort of classification for me, that will identify "rules" with a given degree of confidence? As a next step, I need to be able to take those rules, and use them to create my own data that conforms to these rules. I assume this is a significantly easier step than the classification, but I've never had to perform a task like this before so I'm really not sure how complex it is. At a guess, Python or Java (or possibly Perl or R) are possibly the "common" languages most likely to have these sorts of libraries, and maybe some of the bioinformatic libraries do this sort of thing. I really don't care which language I have to use; I need to solve the problem in whatever way I can. Any sort of pointer to information would be very useful. As you can probably tell, I'm struggling to describe this problem clearly, and there may be a set of appropriate keywords I can plug into Google that will point me towards the solution. Thanks in advance

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• populate CoreData data model from JSON files prior to app start

  - by johannes_d

  I am creating an iPad App that displays data I got from an API in JSON format. My Core Data model has several entities(Countries, Events, Talks, ...). For each entity I have one .json file that contains all instances of the entity and its attributes as well as its relationships. I would like to populate my Core Data data model with these entities before the start of the App (otherwise it takes about 15 minutes for the iPad to create all the instances of the entities from the several JSON files using factory methods). I am currently importing the data into CoreData like this: -(void)fetchDataIntoDocument:(UIManagedDocument *)document { dispatch_queue_t dataQ = dispatch_queue_create("Data import", NULL); dispatch_async(dataQ, ^{ //Fetching data from application bundle NSURL *tedxgroupsurl = [[NSBundle mainBundle] URLForResource:@"contries" withExtension:@"json"]; NSURL *tedxeventsurl = [[NSBundle mainBundle] URLForResource:@"events" withExtension:@"json"]; //converting the JSON files to NSDictionaries NSError *error = nil; NSDictionary *countries = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfURL:countriesurl] options:kNilOptions error:&error]; countries = [countries objectForKey:@"countries"]; NSDictionary *events = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfURL:eventsurl] options:kNilOptions error:&error]; events = [events objectForKey:@"events"]; //creating entities using factory methods in NSManagedObject Subclasses (Country / Event) [document.managedObjectContext performBlock:^{ NSLog(@"creating countries"); for (NSDictionary *country in countries) { [Country countryWithCountryInfo:country inManagedObjectContext:document.managedObjectContext]; //creating Country entities } NSLog(@"creating events"); for (NSDictionary *event in events) { [Event eventWithEventInfo:event inManagedObjectContext:document.managedObjectContext]; // creating Event entities } NSLog(@"done creating, saving document"); [document saveToURL:document.fileURL forSaveOperation:UIDocumentSaveForOverwriting completionHandler:NULL]; }]; }); dispatch_release(dataQ); } This combines the different JSON files into one UIManagedDocument which i can then perform fetchRequests on to populate tableViews, mapView, etc. I'm looking for a way to create this document outside my application & add it to the mainBundle. Then I could copy it once to the apps DocumentsDirectory and be able I use it (instead of creating the Document within the app from the original JSON files). Any help is appreciated!

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• Data loss through permissions change?

  - by charliehorse55

  I seem to have deleted some files on my media drive, simply by changing the permissions. The Story I have many operating systems installed on my computer, and constantly switch between them. I bought a 1TB HD and formatted it as HFS+ (not journaled). It worked well between OSX and all of my linux installations while having much better metadata support than NTFS. I never synced the UIDs for my operating systems so the permissions were always doing funny things. Yesterday I tried to fix the permissions by first changing the UIDs of the other operating systems to match OSX, and then changing the file ownership of all files on the drive to match OSX. About 50% of the files on the drive were originally owned by OSX, the other half were owned by the various linux installations. I started to try and change the file permissions for the folders, and that's when it went south. The Commands These commands were run recursively on the one section of the drive. sudo chflags nouchg sudo chflags -N sudo chown myusername sudo chmod 666 sudo chgrp staff The Bad Sometime during the execution of these commands, all of the files belonging to OSX were deleted. If a folder had linux based files it would remain intact but any folder containing exclusively OSX files was erased. If a folder containing linux files also contained a subfolder with only OSX files, the sub folder would remain but is inaccesible and displays a file size of 0 bytes. Luckily these commands were only run on the videos folder, I also have a music folder with the same issue but I did not execute any of these commands on it. Effectively I have examples of the file permissions for all 3 states - the linux files before and after, and the OSX files before. OSX File Before -rw-r--r--@ 1 charliehorse 1000 3634241 15 Nov 2008 /path/to/file com.apple.FinderInfo 32 Linux File before: -rw-r--r--@ 1 charliehorse 1000 5321776 20 Sep 2002 /path/to/file/ com.apple.FinderInfo 32 Linux File After (Read only): (Different file, but I believe the same permissions originally) -rw-rw-rw-@ 1 charliehorse staff 366982610 17 Jun 2008 /path/to/file com.apple.FinderInfo 32 These files still exist so if there are any other commands to run on them to determine what has happened here, I can do that. EDIT Running ls on one of the "empty" deleted OSX folders yields this: ls: .: Permission denied ls: ..: Permission denied ls: subdirA: Permission denied ls: subdirB: Permission denied ls: subdirC: Permission denied ls: subdirD: Permission denied I believe my files might still be there, but the permissions are screwed.

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• Lost all data on Windows XP after blue screen

  - by Barb

  I got a blue screen and was trying to boot with my OS disk. Frankly, I was unsure exactly how to do this. I was trying everything and booted in partition mode. Finally, I booted with disk and ran chkdsk /r and was able to log into Windows. But, all of my files and pictures are gone. I have no backup and all I'm sick to think that I lost the last seven years of pictures of my kids. What can I do?

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• Data Protection Manager System Protection Backups Failing

  - by TrueDuality

  I'm just starting to setup DPM 2010 in a test environment with a Domain Controller and a File Server. Everything seem to be working fairly well and I can get all of my backup jobs to succeed except for the "Computer\System Protection" backups. Both servers are running fully up to date 64 bit Windows Server 2008 R2 Enterprise with Service Pack 1. The error that is being provided is: DPM cannot create a backup because Windows Server Backup (WSB) on the protected computer encountered an error (WSB Event ID: 517, WSB Error Code: 0x8078001D). (ID 30229 Details: Internal error code: 0x809909FB) This Microsoft Knowledge Base article describes the issue perfectly and provides a hotfix. I downloaded the hotfix, moved it onto the affected server, attempt to run it and receive the following error: The update is not applicable to your computer. I've verified that I have indeed downloaded the 64 bit version. According to this thread the hotfix got rolled into Service Pack 1, yet I'm still experiencing the issue. Both machines do have the Windows Server Backup feature installed. Can anybody point me in the right direction? What am I missing?

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• Intermittent loss of internet connectivity with good wireless signal

  - by rsheart

  I recently bought a HP touch smart running windows 7. At random times, internet connectivity is lost while the wireless signal remains strong. The only way to restore connectivity is to restart the PC. Nothing else works. Have many other PC's on the same router also running windows 7 and no problems there. Have changed routers and problem remains. I have reinstalled the network drivers with no help. Any thoughts?

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• Cablemodem frequent connection loss

  - by LVDave

  I have a Linksys BEFCMU10 cablemodem and a WRT54GL router with Tomato 1.27 firmware on Cox cable. My question is this: I get what seems to be random disconnects from the internet, where the cable modem lights are still normal, but I can connect nowhere, either via a url or an ip address. At the same time these disconnects are happening, I can go to the router's Tomato management webpage, and release/renew my external IP address from Cox's DHCP server. I've had Cox look at the signal levels on the cable modem, and they say they look fine. What brings back the modem, for sometimes as long as 17 days, is several power-cycles of the modem. I don't understand the underlying cable modem technology too well, but I do know that if I'm able to release/renew the DHCP-provided WAN address, I'd expect that the cable modem was working ok... Anybody have any ideas??

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• Preventing Gigabit Loss due to printers [on hold]

  - by Charles

  HOW CAN I MAINTAIN Gigabit Ethernet integrity given this situation: What I have to work with: ** AC-router w/4 port gigabit N-600 router w/4 port gigabit Switch w/8 port gigabit All PCs have gigabit NICs 4-port POE injector at gigabit (all wiring = Cat 6) **Problem = Printer @ 10/100 (built-in) Printer @ 10/100 (built-in) Scanner @ 10/100 (built-in) Printer @ 10/100 (built-in)** What device (not setting up a PC) or configuration would I have to incorporate to get gigabit going given those devices? WILD SHOT: IS THERE SUCH A THING AS A SWITCH THAT CAN ACCOMMODATE THIS? THANK YOU ALL

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• Loss of Incoming Outllok Email Messages in Copy to Folder

  - by John Beath

  Using Outlook 2003, why do incoming email messages with single quote email addresses fail to copy to folders? I use this method to back-up email before deleting it.

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• Bizarre and very specific Internet connection loss

  - by Synetech

  Yesterday (Friday, September 21, 2012), my Internet connection started acting up. After some testing, I confirmed a very specific and baffling set of symptoms: Internet connection goes away every 25-35 minutes (I did not confirm the exact interval, but it seems to be about 30 mins.) Only some protocols are affected; HTTP*, P2P, etc. stop working; FTP, etc. continue to work When it’s stopped, cannot even ping router or cable-modem IPs or view their firmware pages Domain-names and IPs are irrelevant (for protocols that stop working, neither work, for those that still work, both work) Resetting router fixes it for another 30 minutes Keeping the connection idle or active doesn’t seem to make a difference (nor the bandwidth usage in that period) Connecting directly to cable-modem allows it to work indefinitely Disconnecting the router from the cable-modem works indefinitely (no Internet connection obviously, but can still access router IP and firmware page) Connecting the router to the cable-modem, but putting the modem on standby also works indefinitely Same problem with both a wireless laptop and wired (on any port) desktop (both Windows 7; will try to test Windows XP when possible) Nothing had changed in the days leading up to the issue. No modifications to the networking configuration or the router; there were not even any Windows updates except for an MSSE definition update. Waiting does not fix it, nor does any amount of fiddling with anything; only resetting the router fixes it for 30 minutes (resetting the cable-modem doesn't work either) I tried cleaning the pins in the router’s plugs, but that didn’t help, which was not really a surprise since I was not getting a lost connection error. Obviously my first thought was that the router was having a problem, and this is borne out by some tests. The problem is that when it drops, it is not a full drop since I can still do things like ftp ftp.mcafee.com and such which means that the connection and DNS are still working. Moreover, if it were the router, then why does it stay alive indefinitely when not connected to the cable-modem (i.e., no outside influence)? The problem doesn't seem to be either the cable-modem nor the router, but rather an interaction between the two, like something from the outside (port scan? hacker? ISP?) that is triggering a problem in the router. I see that there have been a couple of vulnerabilities for the DI-524, but those were a while back and should be fixed since I have the last firmware for it. I don’t think it’s my ISP (Rogers) since I have been using the router for several years without problem and can connect indefinitely when bypassing it. But I can’t rule them out since that is one of the only possible things that could have suddenly changed. Does anybody have any ideas of explanations, fixed, or tests? (I note that when I opened the router, I heard a very high-pitched noise from somewhere near the capacitors/ferrite ring which I don’t think I heard the last time I opened it a few years ago, but then if it were that, then why would it affect only a very small, specific set of functions?)

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• Loss of feature set with VMware EVC

  - by Peter

  If I have two machines both 3rd Generation AMD Opteron, one Shanghai & one Istanbul and I can vMotion between them. Does it buy me anything to enable EVC at the 3rd Generation AMD level? Will I lose any CPU features? My thoughts are, I can enable EVC 3rd Generation with running VMs and I can't enable 2nd Generation EVC with running VMs. I figure there won't be a lose in any features because if there was a reduction in feature set then I couldn't enable EVC with running VMs.

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• How to avoid damage to ISO archives?

  - by TMRW

  So had a problem where a 16GB ISO was damaged(likely my own fault using standard windows copy dialog instead of proper copy tool like robocopy with verification turned on). It took several hours but i managed to restore the ISO(basicly i rebuilt the damaged parts and recompiled).Namely some .rar archives inside it were unreadable but the ISO itself was readable. So im wondering how can i further protect something like this from happening again?.Obviously proper copy tool but mayble something else?.Perhaps set as "read only" could help?.I generally don't move these files a lot and if i need to acces them then it's only for opening/extracting.

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• How to resize images without loss in quality ?

  - by qWolf

  Hi everybody. I have a image JPEG with resolution is 2010 x 1080 (Pixels). And now, I want resize this image to 338 x 450 without losing image quality, how can I do ? (for ex: After I zoom in image, its quality was not good! ) Which software I can use ? Let me know about a solution. Thanks for all responses ;) Update / Clarification: My purpose is have a page contains image. This image have size is 2010x1080 (in original). First, image display on web page with size is 338x450. Then, to see image more clear, I want to zoom in. But when I do this, image quality was lost. Now, i don't know how to execute this problem :(

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• Recover data from a corrupted virtualbox vmdk file?

  - by Neth

  The power went out while I was doing a build on a VirtualBox machine, when I restarted the vmdk for the disk the vm was using was corrupted, apparently irrecoverably. I have been able to grep the 66GB vmdk file and it finds strings from the code I was working on that hadn't gotten in to subversion yet (yeah, yeah I know). But the strings are either in the shell history or what look to be strings inside object files. Any ideas for finding/recovering the source code? If it helps the vm was Linux, Fedora Core 10 on an ext3 filesystem. The host is an ubuntu 10.04_amd64 and has an ext4 filesystem.

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• Recover data from physically damaged harddrive. What are my options?

  - by Michael Kniskern

  I was trying to replace the power supply in my desktop PC and ended up physically damaging the data connection from the hard drive to the motherboard. The plastic shelf for the copper prongs on the hard drive broke into the cable. Here is a picture of my handy work: I went to Best Buy Geek Squad to discuss my options and they said that they will need to send it to the recover center it could cost anywhere between $250 to $1600 USD to recover the data out the hard drive Is this reasonable for data recovery from a physically damaged hard drive? Are there any other options I can explore? I am going to talk to the data doctors to see what my options are. Update I took the HD to Data Doctors, and they told me that the SATA connection was broken to they would need to replaced the data connector and then copy the data to a brand new hard drive. So, with the initial analysis, cost of replacement parts, and data recovery fee it came out to $865.00 USD. The technician specifically stated if this was an older hard drive that would just need to replace the data connector. But because there is specific information related to the individual hard drive in the flash ROM, they need to transfer the data to a brand new hard drive.

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• Merely chainloading an Acer Recovery Partition deleted all data

  - by WindowsEscapist

  I was starting a backup of Acer's factory restore partition located inside of an extended partition to determine whether or not it still worked. I clicked "take no action" once I saw that it had, in fact, successfully started up. However, when I rebooted, I got an "error: no such partition" and was dropped to a GRUB recovery prompt. Upon further investigation, I discovered that all partitions inside the extended partition were gone except for the recovery partition! What happened? How can I fix this? testdisk doesn't find the deleted partitions!

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• Ways to recover data from external hard drive

  - by Howard Benson

  I use an external hard disk for backup of my mac with time machine (OS 10.5.8). I have made something wrong and I have found important folders in the recycler bin. These folders come from external hd. They are backup folders (backups.backupdb) and others. I have tried to restore them draggin and dropping. Some of them came back in the external hd in a while. For the others it takes hours to "preparing to copy" and then it has said "there's no space to copy" on ext hd. It's strange. Files are now in the recycle bin (180gb), and the ext had should have lot of free space. But it isn't really so. Ext hd is not free of space even if these files are in the bin. I ask for advices. I'm not also able to use time machine now (and i have "lost" old backups) for the same reason. Ext hd says that it has not free space.. Thanks

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• Migrating Linux user data to Windows profiles automatically

  - by scott ryan

  I have what seems to be an incredibly simple problem with a very simple solution but I'm having some trouble connecting dots. I have an aging server running Ubuntu Server which hosts roaming profiles. I am switching to a Windows Server 2012 DS shortly. Users used to be named firstinitial.lastname and we are switching to firstname.lastname. I need to transfer things like favorites, documents, etc. from the roaming Linux profile to the user's local Windows profile. So, the way I think it'd work is by using a login script. I think I'd use a script to mount the Linux server's /home for each user, then do copy to various paths (documents, pictures, etc.). But, how do I automate this for each user that logs in? I'm working with a nonprofit, so doing this by hand would probably be out of their budget. I'm open to suggestions, though. What I want is basically Windows Easy Migration, but I'm fairly certain that won't work under Wine... (Kidding, I promise). Thanks!

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• Troubleshoot IIS 6 and Intermittent SQL Server Connectivity Loss

  - by jpsnow

  I am not a System Administrator, but I am temporarily trying to fill that role. I have 2 Windows 2003 Servers. 1 server has my Microsoft SQL Database (SQL Server 2005) and the other is the web server with IIS6. Intermittently (once every month or 2) the web server loses connectivity to the database server for a period of roughly 10 minutes. It normally regains connectivity without intervention. The website is set up to send me an email when there is a problem connecting to the database. Within the email, I get the error code: [Microsoft][ODBC SQL Server Driver][TCP/IP Sockets]SQL Server does not exist or access denied. I am able to access both servers during the outage. I can go to my SQL server and open up SQL server without any issues. I have looked in the EventViewer and do not see anything. The last time that I had this issue, I stopped IIS6 and started it. After doing this, the issue was resolved. This leads me to believe that it is an issue with IIS and not SQL server. How can I begin troubleshooting?

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• Sudden loss of Wi-Fi connectivity on OS X

  - by GJ.

  Occasionally while I work, without any special provocation, I lose connectivity via Wi-Fi. Other devices connected to the same wifi network have no interruption, and the problem gets resolved once I reboot my MacBook Air, so it's definitely a local problem. Observations: The Wi-Fi symbol in the menu indicates that I'm still connected, but apps can't actually connect neither to the Internet nor to other devices in the LAN. I can't connect to an alternate Wi-Fi network (e.g. Wi-Fi tethering via iPhone). I can connect to the Internet via iPhone USB tethering but this seems to only work some of the time. Only a reboot solves the problem but a regular restart gets stuck on a grey screen with rotating wheel (after all applications have closed) and I have to do a hard reset. How should I go about troubleshooting this? It used to happen very rarely but now is becoming more frequent (approaching once every 2-3 days on average).

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• How to convert a video to 4:3 or 16:9 aspect ratio without loss of video quality

  - by Linux Jedi

  I uploaded my video to youtube and the highest resolution it appears as is 360p. This is much lower than what I uploaded. I believe that youtube isn't making higher resolutions available for my video because of its aspect ratio. The video is 720x400. How can I convert this to a different aspect ratio without losing any of the picture or picture quality? I don't care if blank space appears around the video so long as the picture doesn't get stretched horizontally or vertically.

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