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Sur d’autres sites (4350)

  • Record Webcam as single JPG files [on hold]

    2 décembre 2016, par clic

    I have to record a Windows Directshow Webcam video stream (UHD, 30fps, yuyv422) as single JPG images. Performance is important, so preferably by using NVIDIA GPU acceleration via CUDA or something..

    What is the most simple but powerful solution, without having to buy proprietary software ?

    I had a look at ffmpeg, by recording as MJPEG and then using something like jpegtran to get the JPGs. I tried :

    ffmpeg -f dshow -video_size 1920x1080 -framerate 50 -vcodec mjpeg -i video="XI100DUSB-HDMI Video" out.avi

    But it results in an I/O error saying ’Could not set video options’. Maybe because of the yuyv422 pixel format of my Magewell USB dongles..

    Or is ffmpeg able to record as single JPGs directly somehow ?

    If someone has any other idea/solution besides ffmpeg, please let me know too ! Thanks !

    EDIT :

    I was now able to save JPGs directly, using webcamimg%04d.jpg instead of out.avi. But it’s always claiming about full real-time buffer. Raising the rtbufsize parameter doesn’t really help..

    ffmpeg console output :

    ffmpeg version 3.2 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-li
    
bopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 34.100 / 55. 34.100
    
  libavcodec     57. 64.100 / 57. 64.100
    
  libavformat    57. 56.100 / 57. 56.100
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
[dshow @ 0000000001c628a0] Could not set video options
    
video=XI100DUSB-HDMI Video: I/O error

    Output of : ffmpeg -list_options true -f dshow -i video="XI100DUSB-HDMI Video"

    [dshow @ 00000000004d71e0] DirectShow video device options (from video devices)
    
[dshow @ 00000000004d71e0]  Pin "Capture" (alternative pin name "0")
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1920x1080 fps=15 max s=1920x1080 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1920x1080 fps=15 max s=1920x1080 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=640x360 fps=15 max s=640x360 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=640x360 fps=15 max s=640x360 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=640x480 fps=15 max s=640x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=640x480 fps=15 max s=640x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=720x480 fps=15 max s=720x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=720x480 fps=15 max s=720x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=720x576 fps=15 max s=720x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=720x576 fps=15 max s=720x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=768x576 fps=15 max s=768x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=768x576 fps=15 max s=768x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=800x600 fps=15 max s=800x600 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=800x600 fps=15 max s=800x600 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=856x480 fps=15 max s=856x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=856x480 fps=15 max s=856x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=960x540 fps=15 max s=960x540 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=960x540 fps=15 max s=960x540 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1024x576 fps=15 max s=1024x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1024x576 fps=15 max s=1024x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1024x768 fps=15 max s=1024x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1024x768 fps=15 max s=1024x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x720 fps=15 max s=1280x720 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x720 fps=15 max s=1280x720 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x800 fps=15 max s=1280x800 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x800 fps=15 max s=1280x800 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x960 fps=15 max s=1280x960 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x960 fps=15 max s=1280x960 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x1024 fps=15 max s=1280x1024 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1280x1024 fps=15 max s=1280x1024 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1368x768 fps=15 max s=1368x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1368x768 fps=15 max s=1368x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1440x900 fps=15 max s=1440x900 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1440x900 fps=15 max s=1440x900 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1600x1200 fps=15 max s=1600x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1600x1200 fps=15 max s=1600x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1680x1050 fps=15 max s=1680x1050 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1680x1050 fps=15 max s=1680x1050 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1920x1200 fps=15 max s=1920x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   pixel_format=yuyv422  min s=1920x1200 fps=15 max s=1920x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1920x1080 fps=15 max s=1920x1080 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1920x1080 fps=15 max s=1920x1080 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=640x360 fps=15 max s=640x360 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=640x360 fps=15 max s=640x360 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=640x480 fps=15 max s=640x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=640x480 fps=15 max s=640x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=720x480 fps=15 max s=720x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=720x480 fps=15 max s=720x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=720x576 fps=15 max s=720x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=720x576 fps=15 max s=720x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=768x576 fps=15 max s=768x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=768x576 fps=15 max s=768x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=800x600 fps=15 max s=800x600 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=800x600 fps=15 max s=800x600 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=856x480 fps=15 max s=856x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=856x480 fps=15 max s=856x480 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=960x540 fps=15 max s=960x540 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=960x540 fps=15 max s=960x540 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1024x576 fps=15 max s=1024x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1024x576 fps=15 max s=1024x576 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1024x768 fps=15 max s=1024x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1024x768 fps=15 max s=1024x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x720 fps=15 max s=1280x720 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x720 fps=15 max s=1280x720 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x800 fps=15 max s=1280x800 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x800 fps=15 max s=1280x800 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x960 fps=15 max s=1280x960 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x960 fps=15 max s=1280x960 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x1024 fps=15 max s=1280x1024 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1280x1024 fps=15 max s=1280x1024 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1368x768 fps=15 max s=1368x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1368x768 fps=15 max s=1368x768 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1440x900 fps=15 max s=1440x900 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1440x900 fps=15 max s=1440x900 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1600x1200 fps=15 max s=1600x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1600x1200 fps=15 max s=1600x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1680x1050 fps=15 max s=1680x1050 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1680x1050 fps=15 max s=1680x1050 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1920x1200 fps=15 max s=1920x1200 fps=59.9999
    
[dshow @ 00000000004d71e0]   unknown compression type 0xE436EB7D  min s=1920x1200 fps=15 max s=1920x1200 fps=59.9999
    
video=XI100DUSB-HDMI Video: Immediate exit requested

  • (MEncoder) How to resolve librtsp : buffer overflow in rtsp_get error ?

    14 janvier 2016, par Siva Prasanna

    I’m trying to use MEncoder to dump an RTSP stream I get. When I try to do the same, I get an error saying "librtsp : buffer overflow in rtsp_get".

    The full console output is given below.

    C:\mplayer-svn-37594>mplayer -dumpstream "rtsp://qa.vibrnet.com:80/mov/video.sav?MAC=00C0021F1116&channel=2&GUID=betauser"
    
MPlayer Redxii-SVN-r37594-4.9.3 (i686) (C) 2000-2016 MPlayer Team
    
FFmpeg version: N-77758-g6e24946
    
Build date: 2016-01-09 00:49:37 EST
    

    
Playing rtsp://qa.vibrnet.com:80/mov/video.sav?MAC=00C0021F1116&channel=2&GUID=betauser.
    
Resolving qa.vibrnet.com for AF_INET...
    
Connecting to server qa.vibrnet.com[204.x.x.x]: 80...
    

    
librtsp: buffer overflow in rtsp_get

    When I tried to play the stream, I get this error as well. What could be the reason ? Help me resolve this one. Thank you !

  • FFMPEG - Invalid data found when processing input

    14 janvier 2016, par Siva Prasanna

    I want to play an RTSP live stream that I get internally. I’m using ffplay to play this. And this is the command that I use :
    ffplay -i "rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser", but when I execute, I get Invalid data found when processing input error. The complete error output is given below :

    D:\..>ffplay -i "rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser"
    
ffplay version N-77816-g9ca64c3 Copyright (c) 2003-2016 the FFmpeg developers
    
built with gcc 5.2.0 (GCC)
    
configuration: --enable-gpl --enable-version3 --disable-w32threads 
    
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls 
    
--enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca 
    
--enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
    
--enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb 
    
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp 
    
--enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
    
--enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
    
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
    
 --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
    
--enable-lzma --enable-decklink --enable-zlib
    
libavutil      55. 13.100 / 55. 13.100
    
libavcodec     57. 22.100 / 57. 22.100
    
libavformat    57. 21.101 / 57. 21.101
    
libavdevice    57.  0.100 / 57.  0.100
    
libavfilter     6. 23.100 /  6. 23.100
    
libswscale      4.  0.100 /  4.  0.100
    
libswresample   2.  0.101 /  2.  0.101
    
libpostproc    54.  0.100 / 54.  0.100
    
rtsp://test.vibrtech.com/mov/video.sav?MAC=00C2100F124&channel=2&GUID=betauser: Invalid data found when processing input

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