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  • Disable linux read and write file cache on partition

    - by complistic
    How do i disable the linux file cache on a xfs partition (both read an write). We have a xfs partition over a hardware RAID that stores our RAW HD Video. Most of the shoots are 50-300gb each so the linux cache has a hit-rate of 0.001%. I have tryed the sync option but it still fills up the cache when copinging the files. ( about 30x over per shoot :P ) /etc/fstab: /dev/sdb1 /video xfs sync,noatime,nodiratime,logbufs=8 0 1 Im running debian lenny if it helps.

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  • Most basic, low power home surveillance system

    - by cbp
    I am thinking of setting up a simple but effective surveillance system for my house that is: Very low powered (preferably no PCs left running out of stand-by mode) Cheap. When motion (or sound) is detected, I would like it to: Send an email/phone alert to me Record and upload video to the web (in case they steal the camera) So I imagine a system where I leave a netbook PC in stand-by mode and have it woken up by a motion detector. This initiates software to send alerts and periodically upload recorded video to the web. The software part is easy for me, but I'm not really a gadget-man so I'd like some advice on using a motion sensor of some sort to wake up the PC. Does anyone have some good advice? I know there are a couple of questions dealing with this topic already (see here: http://superuser.com/questions/3054/looking-for-a-moderately-priced-home-surveillance-setup, and here: http://superuser.com/questions/2929/can-you-suggest-a-great-home-security-setup-anti-burglars-e-t-c) - I am seeking more specific information with this question.

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  • How to adjust and combine multiple lower quality photos into one better using FOSS?

    - by Vi
    I have multiple noisy photos (caputed without tripod) that needs to be adjusted (moved/rotated) and averaged. How it's better to do it in Linux with FOSS console-based programs? Current way is something like: mplayer mf://*.JPG -vo yuv4mpeg:file=qqq.yuv transcode -i qqq.yuv -y null -J stabilize=maxshift=500:fieldsize=100:fieldnum=6:stepsize=50:shakiness=10 transcode -i qqq.yuv -J transform=smoothing=100000:sharpen=0:optzoom=0 -y raw -o www.yuv mplayer www.yuv -vo pnm gm convert -average 0*.ppm q.ppm i.e.: Convert photos to video Apply Transcode's "Stabilize" filter Convert the video back to images Average the images. It works, but bad: photos still not perfectly adjusted and the whole sequence is very slow. What is better way of doing it?

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  • What's the performance on USB docking stations, and can they be used when laptop is closed?

    - by David
    I'm looking into a docking station for a Dell Studio laptop. I don't see the traditional docking stations I'm familiar with - the kind (for a Dell Latitude, for example) where you sit the laptop on top of a long row of pins. Instead, I'm seeing a lot of USB docking stations. When I close my laptop, I want it to go into sleep mode. If I then connect a USB docking station to the laptop while it's closed, will it wake up? What's the performance on USB 2.0 docking stations with a new Dell Studio? Can all of the video and internet traffic really go through a USB 2.0 connection while still providing the best video frame rates and internet speeds? When you undock, I assume you'd have to use the "Safely Remove Hardware" feature in Windows. Will that successfully 'remove' everything attached to the docking station - external drives, thumb drives, etc?

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  • Error in joining 4 AVI files.

    - by goldenmean
    Hello, I have 4 avi files. Each file can be played properly in VLC player, Windows media player. Video-Audio Codec type in each of this avi file is Xvid-Mpga. I used below avi joiners: Quick AVI joiner, AVI join, BoilSoft Video Joiner(trial version), but all of them gave an error when i select the first part avi file saying : "format of the part1.avi file cannot be recognized".. What could be the problem. How do i join these AVI files. Any pointers will help. Thanks. -AD.

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  • HP Pavilion dv6000 graphics issue

    - by Tony
    A few days ago my laptop seized up on me while I was playing a game. When I restarted the computer, it sent me back to 640x480 resolution with 16 colors (clearly a graphical issue). In device manager, it shows an error, stating "Windows has stopped this device because it has reported problems. (Code 43)" regarding the video card. Upon removing and re-installing the drivers using both Windows Update and my own searching through nvidia's site, it's given me zero results. For kicks, I ran my antivirus (you never know!) and registry cleaner to see if anything would turn up. The antivirus found nothing, but CCleaner found 27 registry errors all dealing with my video card. What could be the cause of this, and what course of action would you recommend in this situation? Thanks in advance for the help! OS: Windows 7 Professional GPU: nvidia GeForce 8400M GS

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  • Should I use 802.11n with a 15 Mbps ISP (Comcast Cable)?

    - by stackoverflowuser2010
    I currently own a LinkSys-WRT54GL 802.11a/b/g wireless router, and my ISP is Comcast Cable providing me with 15 Mbps (that's bits per second, I believe) download speed. I am wondering if there is any benefit with using an 802.11n wireless router to access the Internet? The maximum theoretical speed of the WRT54GL router is 54 Mbps (802.11g), which is faster than the 15 Mbps provided by my ISP. I know that 802.11n has a max bandwidth of 300 Mbps, and it would help for intra-house transfers, such as streaming video from one computer to another. But is there any benefit to 802.11n for Internet activity, such as web browswing, gaming, and streaming video from Netflix?

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  • Is there any multi-touch graphics tablet with Linux drivers?

    - by Zifre
    After watching the absolutely amazing 10/GUI video, I have been dying to try to implement something like this. I can do the software side quite easily, but I don't have the hardware. The Wacom Bamboo Fun would work, but the Linux drivers don't support the multi-touch features. Microsoft's "UnMouse Pad" looks like the perfect solution, but it is not commercially available yet. Are there any similar devices that would work? Alternatively, is there a way to build a DIY version? (It is fairly easy to build a multi-touch display with a webcam and IR LEDs, but it would not be pressure sensitive. Does anyone have any info on how the UnMouse Pad works and if it is possible to build one?) EDIT: I should clarify that I don't want a multi-touch display. I want the sensor to be separate from the display. If that sounds crazy, watch the 10/GUI video.

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  • WinXP Movie Maker Codec Error

    - by Bob Rivers
    Hi, I'm trying to use Windows XP Movie Maker, but when I try to import an AVI video, it shows an error telling me that it wasn't import due to an the fact that the codec wasn't available (I'm able to see the video using the windows media player) First, the error message suggested to enable the option "download codecs automatically" under "tools options general". I did it. But know the error tells me that the codec wasn't available and, if I already installed it, I should reinitialize movie maker. I also already did it... The error msg is: The file D:\movie1.avi cannot be imported because the codec required to play the file is not installed on your computer. If you have already tried to download and install the codec, close and restart Windows Movie Maker, and then try to import the file again. Any hint? TIA, Bob

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  • Windows 7 does not recognise second display output

    - by gilles27
    I've got a PC with dual BenQ G2222HDL monitors and an ATI Radeon HD 4650 video card. I've been running both monitors at 1920x1080 for some months now but last week the second monitor switched to a lower resolution and won't let me go back to 1920x1080. If I right click the Desktop and choose Screen Resolution from the menu, I get two items in the Display: drop down list BenQ G2222HDL D-SUB Display device on: VGA In the past 2 was always the same as 1. If I click Detect a third item appears Available display output on: ATI Radeon HD 4650 but if I use the Multiple displays: drop down list to use it says "No display detected" and then lets me choose from either "Connect anyway on S-Video" or "Connect anyway on Component", neither of which help. It seems like Windows 7 recognises the card is dual-head, and knows I have got two monitors, but can't link it all together. I have checked and all my drivers are up-to-date. Does anyone have any suggestions as to how I can get the second monitor working properly again?

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  • How to fix skipping/stuttering audio in Google Chrome

    - by Droid
    If I play Google Music, or a Youtube video in the Chrome browser, and then open a new tab and start typing the address bar, the audio will quickly cut in and out as I am typing (with almost every letter I type). It also is choppy if I play the video and start typing in the start menu. I can not repeat this behavior using internet explorer. Based on that Im thinking that it maybe a problem with the version of flash Chrome is using but I'm not sure. Any ideas? Im running 32 bit windows 7, i.e. 9, and chrome 23.0 pc is a lenovo t43p. I have the latest sound drivers. i.e. is using flash 11.5.502. chrome is using : Adobe Flash Player - Version: 11.5.31.2 Only one (this) plugin is listed for flash in the chrome plugins list.

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  • Which mediacenter appliance

    - by Guillaume
    I'm looking to buy a mediacenter appliance, but I am a bit lost by all the offers on the market. Here are the features I am looking for : at least 500Go HDD capable of playing HD (1080p) supporting a good range of video and audio codecs support for subtitles including a DVB-T input (coax) and tuner composite video input 5.1 (or 7.1) analog audio output LAN (100M or Gigabit) fileserver (SMB or NFS) remote control possibly digital output (S/PDIF, TOSLINK, or other) no need for integrated DVD player no need for wifi The Ultio Pro looks nice (http://www.thinkgeek.com/electronics/home-entertainment/d3fe). It just lacks a DVB-T input which is a show killer for me. Thanks for your suggestions.

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  • no display on tv when connecting pc via hdmi in win7

    - by Kane
    The system of pc is win7 32bit, the video card is ATI 4670. The tv is philips 74xx series. And the monitor is Dell 19' that connect with pc via VGA. The tv can receive the singal and show the pictures when booting the pc(bios self checking, the logo of windows 7), however the tv says there is no signal after the win7 login window shows. I have installed the latest CCC and driver of ATI video card. Does anyone have idea for it?

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  • Motherboard on, but nothing will start

    - by Geeklat
    I'll try and be as clear as possible. Recently I purchased a barebones kit for my first attempt at a full PC assembly. I've gone through and connected all the parts correctly based on numerous examples that confirm everything is connected correctly. The motherboard and the video card are receiving power based on the fact that the motherboard's power LED is on and the video card has some LEDs on. Nothing else in the computer will come on when pressing the power button on the case. No fans, no hard drive, no CPU fan. Not even for a split second. I also receive no beeping noise from the speaker connected to the motherboard. I've also tried swapping the reset and power connectors from the front of the case to no luck.

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  • What is a usable throughput for a home media server

    - by Craig
    I am looking to setup a home server that will act as a media server. This will include both video (possibly HD) and audio. The clients will be a fun mix of hardware but that is a different question. What I want to know is what is the minimum throughput for streaming video without hitches? Is there a "sweet" spot for throughput (price vs. throughput)? I am determining my budget for this "upgrade" and I need to evaluate wether or not upgrading to a 1 Gbps home LAN is required. Sure, it would be sweet and easily handle the traffic but I don't want to do it unless it is necesary.

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  • Flash was "not designed to function across LANs". Any workarounds?

    - by Triynko
    See: http://helpx.adobe.com/flash/kb/problems-using-flash-authoring-across.html Issue When using Adobe Flash across a local area network (LAN) and networked drives/folders, you may experience any of the following problems:" Flash crashes while performing a test movie on FLA files located on a networked drive or folder. FLA files get corrupted when opening from or saving to networked drives or folder. Flash does not reflect changes in custom class after compiling. Flash, Flash Video Encoder, or Adobe Media Encodercrashes or corrupts Flash Video (FLV) files while encoding source located on networked drives or folder. Flash Video Encoder or Adobe Media Encoder crashes or corrupts FLV files where the output folder is a networked drive or folder. Published Flash Player (SWF) files and projectors are unable to load content located on networked drives or folder. More than one instance of a SWF or Projector on client machines cannot play back FLV files located on a networked drive or folder. Reason The Adobe Flash IDE, FLV Encoder, Adobe Media Encoderand Flash Player were not designed to function across LANs. Solution Use of Flash files across local networks is not supported in any context. Published content should access data through a web server. All file sources should be opened and saved on the local system. Using Flash in such a scenario for project collaboration or content deployment is highly discouraged and may corrupt your source files. If you need to work in a collaborative environment or store source files on a server, use the project panel and/or a third-party version control system. SERIOUSLY? I cannot work on files located on a mapped network drive? How did they mess that one up? Does the Flash IDE really open the source file and wipe it clean to do the saving, rather than saving a copy first then replacing it as an atomic file system operation? How hard would it be for them make a dummy temporary file for saving then issue a MOVE command? Any workarounds for this, like something that can make a network drive as stable as a local drive, like some kind of automatic local caching and synching?

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  • Snap Server 18000 connection help!

    - by sicko666
    I wonder if anyone here can help me. I have a home server setup made up of old secondhand computers, 2 servers running Windows Server 2003, 1 workstation running Windows 7, a 16 port switch & an adsl ethernet modem. All these connect and talk to each other fine but then I got a "Snap Server 18000" and a "Snap disk 30sa" sata array. When I turn the Snap on, it boots past the BIOS, runs a kernel, then displays: This device cannot be managed via the video/kbd/mouse interface. The video is now disabled. You may access the management functions from your web browser. Only, none of the other PCs detect it, so no browser can find it! I have checked all cables, and all LEDs indicate there's a connection. I have installed the windows "iscsi" and the adaptec "Snap Server Manager" on all PCs but still it's not detected. I don't know what else to do, please advise!

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  • Windows Media Player Object with Video_TS Files - No Sound Anymore

    - by user1624184
    I copied a bunch of my DVDs (yes, owned) to a drive and created a basic webpage to be able to search and play them. I am using the code at the bottom to create a Windows Media Player object and then play the video. The video files are pulled off the DVD in the original format so each movie has files like this: VTS_01_0.BUP VTS_01_0.IFO VTS_01_1.VOB VTS_01_2.VOB VTS_01_3.VOB VTS_01_4.VOB VTS_01_5.VOB VTS_01_6.VOB This all worked great until just recently. On my dev machine, I can play the videos but now, all of a sudden, there is no sound. I have tried the following but no luck: The video is not muted and the sound is at 50% Under the sound icon, under mixer, I checked IE and it is fine Sound works fine using another program, says WinAmp Opening Windows Media Player directly from the Start Menu and then playing the same movie works fine and I get sound I ensured that the option in IE to play sound on websites is checked I can play sound on other people's websites where they have embedded WMP files I tried resetting all of the IE settings on the Advanced tab in IE I tried my website, with my code below on another computer, AND IT WORKS FINE! I tried copying the media files listed above from the computer that works fine to my dev computer and it still doesn't work. If I try using a ".wmv" file, the sound does work By the way, I am using Win7 with IE8. As you can see, this is driving me crazy! Why would it stop working on my one computer and the same code and files work fine on another computer? Any help would be greatly appreciated. <OBJECT id="mediaPlayer" width="640px" height="480px" style="position:absolute; left:0px; top:0px;" CLASSID="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6" type="application/x-oleobject"> <PARAM NAME="URL" VALUE="E:\test\VIDEO_TS\VIDEO_TS.IFO" /> <PARAM NAME="SendPlayStateChangeEvents" VALUE="True"/> <PARAM NAME="AutoStart" VALUE="True"/> <PARAM NAME="uiMode" VALUE="full"/> <PARAM NAME="volume" VALUE="50" /> <PARAM NAME="PlayCount" VALUE="9999"/> <PARAM NAME="fullScreen" VALUE="true"/> <PARAM NAME="enableContextMenu" VALUE="true"/> </OBJECT>

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  • Windows 7 does not recognise second display output [closed]

    - by gilles27
    I've got a PC with dual BenQ G2222HDL monitors and an ATI Radeon HD 4650 video card. I've been running both monitors at 1920x1080 for some months now but last week the second monitor switched to a lower resolution and won't let me go back to 1920x1080. If I right click the Desktop and choose Screen Resolution from the menu, I get two items in the Display: drop down list BenQ G2222HDL D-SUB Display device on: VGA In the past 2 was always the same as 1. If I click Detect a third item appears Available display output on: ATI Radeon HD 4650 but if I use the Multiple displays: drop down list to use it says "No display detected" and then lets me choose from either "Connect anyway on S-Video" or "Connect anyway on Component", neither of which help. It seems like Windows 7 recognises the card is dual-head, and knows I have got two monitors, but can't link it all together. I have checked and all my drivers are up-to-date. Does anyone have any suggestions as to how I can get the second monitor working properly again?

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  • Do browsers allows pages loaded on one tab to access/intercept/inject data in other tabs?

    - by jairo
    I was surprised to hear from this Reuters video that it was possible for a page loaded on one tab to access and/or inject data onto another page loaded on a different tab. TL;DW (too lazy; didn't watch) The interviewee in the video suggests that when doing online banking, the user exit his browser (thus closing all windows) and start a new browser session with just your banking page/tab open. Allegedly, malicious sites can check if you have your banking site open and inject commands onto those sites. Can someone confirm and/or deny this claim? Is it only possible even if there is not parent/child relationship between windows/tabs?

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  • ffmpeg open webcam using YUYV but i want MJPEG

    - by Pavel
    I need ffmpeg to open webcam (logitech c910) in MJPEG mode, because the webcam can give ~24 using MJPEG "protocol" and only ~10 fps using the YUYV. Can i choose between them using ffmpeg command line? xx@(none) ~ $ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'YUYV' Name : YUV 4:2:2 (YUYV) Index : 1 Type : Video Capture Pixel Format: 'MJPG' (compressed) Name : MJPEG My current command line: ffmpeg -y -f alsa -i hw:3,0 -f video4linux2 -r 20 -s 1280x720 -i /dev/video0 -acodec libfaac -ab 128k -vcodec libx264 /tmp/web.avi ffmpeg produces corrupted h264 stream when i record from webcam, but normal h264 strem when i record from x11grab. Another codecs (mjpeg, mpeg4) works well with webcam... But this is another story.

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  • avconv and ffmpeg - drawtext filter text_w evaluates as 0 in Ubuntu Precise

    - by Chris White
    I'm attempting to draw text onto a video using either the avconv or ffmpeg commands. When specifying x= for where on the final video to place the text, the 'text_w' value is evaluating to 0, rather than the width of the rendered text as it should. I'm using Ubuntu 12.04 I've got avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1 and ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1 Example command: avconv -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=text_w:y=50:fontsize=24:fontcolor=black" texted.mov This command causes the text to be printed as if x were set to 0. What I'd really like to be able to do is center the text horizontally using something like this: avconv -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=(main_w-text_w)/2:y=50:fontsize=24:fontcolor=black" texted.mov Using ffmpeg for to attempt the same ends with the same result ffmpeg -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=(main_w-text_w)/2:y=50:fontsize=24:fontcolor=black" texted.mov

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  • Rewrite URL before passing to proxy Lighttpd

    - by futureelite7
    Hi, I'm trying to setup a reverse proxy in lighttpd, such that all requests (and only those requests) under /mobile/video is redirected to the / directory of a secondary web server. This is pretty easy in apache, but I can't for the life of me figure out how to do so in lighttpd. $HTTP["url"] =~ "^/wsmobile/video/" { url.rewrite-once = ( ".*" => "/test/" ) proxy.server = ( "" => ( ( "host" => "210.200.144.26", "port" => 9091 ) ) ) } I've tried using the http["url"] directive, but lighttpd simply ignore those requests and continue to pass the full url to the secondary server, which of course chokes and throws 404s. However, if I do a global rewrite then everything gets forwarded to the secondary server, which is also not what I want. How do I go about this task?

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  • Good Linux Distro for Disconnected Netbook

    - by MrWizard54
    I'm deployed to Afghanistan with the Army and I have a friend who's netbook had his hard drive take a dump on him. He ordered a new hard drive and I was able to download and burn a copy of Ubuntu to disk from work. However the default install doesn't support most of the media that he wants to watch (AVI files, probably some DIVX video) without installing extra packages. We don't have internet in the tent and really don't have a vaiable option for downloading additional packages through the package manager anywhere here. The computer is a small HP netbook. All my friend wants is to watch ripped movies. Does anyone know of a good way to do either of the following: Download packages seperately and install them via CD A distro that is going to come preloaded with all of the packages and needed to watch just about any type of video file you can think of? Thanks in advance, Andy

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  • What is the best software to capture full-screen 3h programming session in Windows?

    - by Hugo S Ferreira
    Hi, I'm planning a laboratorial experiment to assess behavior of groups when programming using some tools under study. For that, I'll need to capture their entire screen to disk. Mostly, what will be displayed is code, so I'm not to worried with image quality. However, it's paramount that the team is not able to stop the recording by accident, and the tool should be rebust enough to hold at least 3h of video. If possible, it would be nice for researchers in other rooms to "watch" the video as it is recording. Actually, this last requirement reminded me that I could use a VNC recording software, and install a VNC client in each laboratory computer. Anyway, what is your experience with this? Which software do you recommend? Thanks.

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