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• UWP run ffmpeg process to capture

  16 février 2018, par InspiracvionV

  I’m developing a UWP app with C# and I need to start FFmpeg in a process.

  I use this ffmpeg command which works good in CMD :

  D :\ffmpeg.exe -f dshow -crossbar_video_input_pin_number 1 -i
  video="AVerMedia BDA Analog Capture" -vcodec rawvideo -pix_fmt yuv420p
  -s 864x768 -r 10 "D :\capture\output.yuv" -loglevel 16

  But when I start the process with the same command and arguments in my UWP app I get this error from ffmpeg :

  [dshow @ 000001bd43907e80] Unable to BindToObject for AVerMedia BDA
  Analog Capture [dshow @ 000001bd43907e80] Could not find video device
  with name [AVerMedia BDA Analog Capture] among source devices of type
  video. video=AVerMedia BDA Analog Capture : I/O error

  This is my code :

          string filename = @"D:\ffmpeg.exe";
  
          string arg = " -f dshow -crossbar_video_input_pin_number [VIDEOPIN] -i video=\"AVerMedia BDA Analog Capture\" -vcodec rawvideo -pix_fmt [PIXELCONF] -s [SIZE] -r [FPS] \"[FOLDER]\\[VIDEONAME]\" -loglevel 16";
  
          arg = path.Text;
  
          if (!File.Exists(filename))
  
              System.Diagnostics.Debug.WriteLine("Not exist ffmpeg");
  
  
  
  
  
  
  
          arg = arg.Replace("[VIDEOPIN]", "1");
  
          arg = arg.Replace("[VIDEODEVICE]", "AVerMedia BDA Analog Capture");
  
          arg = arg.Replace("[PIXELCONF]", "yuv420p");
  
          arg = arg.Replace("[SIZE]", "864x768");
  
          arg = arg.Replace("[FPS]", "10");
  
          arg = arg.Replace("[FOLDER]", "D:\\capture");
  
          arg = arg.Replace("[VIDEONAME]", "output.yuv");
  
  
  
          ProcessStartInfo pi = new ProcessStartInfo(filename, arg);
  
          System.Diagnostics.Debug.WriteLine(pi.FileName + " " + pi.Arguments.ToString());
  
          pi.RedirectStandardInput = true;
  
          pi.RedirectStandardOutput = true;
  
          pi.RedirectStandardError = true;
  
          pi.UseShellExecute = false;
  
  
  
          pi.CreateNoWindow = true;
  
          process = new Process();
  
          process.StartInfo = pi;
  
          process.EnableRaisingEvents = true;
  
          process.OutputDataReceived += new DataReceivedEventHandler(MyProcOutputHandler);
  
          process.ErrorDataReceived += new DataReceivedEventHandler(MyProcErrorHandler);
  
          process.Exited += new EventHandler(ExitedProcess);
  
  
  
  
  
  
  
          process.Start();
  
          process.BeginErrorReadLine();
  
          process.BeginOutputReadLine();

  EDIT : This is what i have with :

  ffmpeg -list_devices true -f dshow -i dummy

  ffmpeg version N-90054-g474194a8d0 Copyright (c) 2000-2018 the FFmpeg
  developers built with gcc 7.2.0 (GCC) configuration : —enable-gpl
  —enable-version3 —enable-sdl2 —enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libmfx —enable-amf —enable-cuda —enable-cuvid —enable-d3d11va —enable-nvenc —enable-dxva2 —enable-avisynth libavutil 56. 7.101 / 56. 7.101 libavcodec 58. 11.101 / 58. 11.101 libavformat 58. 9.100 / 58. 9.100 libavdevice 58. 1.100 / 58. 1.100 libavfilter 7. 12.100 / 7. 12.100 libswscale 5. 0.101 / 5. 0.101 libswresample 3. 0.101 / 3. 0.101 libpostproc 55. 0.100 / 55. 0.100 [dshow @ 0000029065b07940] DirectShow video devices (some may be both video and audio devices) [dshow @ 0000029065b07940]
  "AVerMedia BDA Analog Capture" [dshow @ 0000029065b07940] Alternative
  name
  "@device_pnp_~?\pci#ven_1a0a&dev_6202&subsys_620f1461&rev_01#4&3632f028&0&00e6#65e8773d-8f56-11d0-a3b9-00a0c9223196ca465100-deb0-4d59-818f-8c477184adf6"
  [dshow @ 0000029065b07940] "AVerMedia BDA Analog Capture Secondary"
  [dshow @ 0000029065b07940] Alternative name
  "@device_pnp_~?\pci#ven_1a0a&dev_6202&subsys_620f1461&rev_01#4&3632f028&0&00e6#65e8773d-8f56-11d0-a3b9-00a0c9223196ede957b0-eaa5-4bf4-acf3-6e10cb4836c3"
  [dshow @ 0000029065b07940] DirectShow audio devices [dshow @
  0000029065b07940] Could not enumerate audio only devices (or none
  found). dummy : Immediate exit requested

• Using ffmpeg To Convert wav file to g729 file

  30 novembre 2023, par UserProg

  I am using ffmpeg in my Windows laptop to convert .wav to .g729 format. I have spent some times on the documentation, tutorials, and some threads with no success till now.

  



  Below is my ffmpeg version details :

  



  ffmpeg version N-89674-g57d0c24132 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
libavutil      56.  7.100 / 56.  7.100
libavcodec     58.  9.100 / 58.  9.100
libavformat    58.  3.100 / 58.  3.100
libavdevice    58.  0.100 / 58.  0.100
libavfilter     7.  8.100 /  7.  8.100
libswscale      5.  0.101 /  5.  0.101
libswresample   3.  0.101 /  3.  0.101
libpostproc    55.  0.100 / 55.  0.100

  



  I have tried ffmpeg -i testA.wav -c:a libavformat -f g.729 output.g729 and ended up with error saying [NULL @ 0000022aa639dd80] Requested output format 'g.729' is not a suitable output format
output.g729: Invalid argument.

  



  I did try some different format names with no success still.

  



  Appreciate some guidance on this. Thanks.

  


• Picture in picture problem on output stream in FFMPEG

  7 mai 2020, par mat thew

  I have a problem with ffmpeg output video.

  



  I am using Raspberry Pi to connect video (stream with IP camera) and audio. Its work fine.
I would like to add to my output video another video with second camera (in left-top side).

  



  Graphics it is looks like :

  



  _________________
| |_2_|         |
|               |
|        1      |
|_______________|


  



  1 is head video, 2 is video to add

  



  that is my code to situation with top :

  



  /home/pi/FFmpeg/ffmpeg -y -thread_queue_size 512K \
-re -vsync 1 -rtsp_transport tcp -itsoffset 0 -use_wallclock_as_timestamps 1 \
-i "rtsp://admin:admin@172.16.7.7:554/cam/realmonitor?channel=1&subtype=0" \
-thread_queue_size 512K -i "rtsp://video:video@172.16.7.8:554/cam/realmonitor?channel=1&subtype=0" \
-filter_complex "[1]scale=iw/3:ih/3 [pip]; [0][pip] overlay=3:3" \
-ar 44100 -itsoffset 1.5 -ac 2 -f alsa -ac 2 -thread_queue_size 512K -i default -f h264 \
-c:a aac -ab 128k -g 50 -strict -2 -f flv rtmp://127.0.0.1/sesja/transmisja


  



  Stream is running, however number of fps is 4-5, speed is 0.3 what makes it output stream does not work properly.

  



  I am asking from help in configuration, maybe Raspberry does not support this solution in hardware.

  



  FULL LOG :

  



  ffmpeg version N-92540-g28c96c2ce2 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1+deb9u1) 20170516
  configuration: --arch=armel --target-os=linux --enable-gpl --enable-omx --enable-omx-rpi --enable-nonfree --enable-indev=alsa --enable-outdev=alsa
  libavutil      56. 24.101 / 56. 24.101
  libavcodec     58. 40.100 / 58. 40.100
  libavformat    58. 23.100 / 58. 23.100
  libavdevice    58.  6.100 / 58.  6.100
  libavfilter     7. 46.100 /  7. 46.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Input #0, rtsp, from 'rtsp://admin:admin@172.16.7.7:554/cam/realmonitor?channel=1&subtype=0':
  Metadata:
    title           : RTSP Session/2.0
  Duration: N/A, start: 1588833830.370000, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 20 fps, 20 tbr, 90k tbn, 40 tbc
[rtsp @ 0x31cc480] max delay reached. need to consume packet
[rtsp @ 0x31cc480] RTP: missed 35 packets
[rtsp @ 0x31cc480] max delay reached. need to consume packet
[rtsp @ 0x31cc480] RTP: missed 7 packets
[h264 @ 0x31e4180] concealing 3081 DC, 3081 AC, 3081 MV errors in I frame
[rtsp @ 0x31cc480] max delay reached. need to consume packet
[rtsp @ 0x31cc480] RTP: missed 34 packets
[h264 @ 0x31e4180] error while decoding MB 30 1, bytestream -11
[h264 @ 0x31e4180] concealing 3539 DC, 3539 AC, 3539 MV errors in P frame
[rtsp @ 0x31cc480] max delay reached. need to consume packet
[rtsp @ 0x31cc480] RTP: missed 13 packets
Input #1, rtsp, from 'rtsp://video:video@172.16.7.8:554/cam/realmonitor?channel=1&subtype=0':
  Metadata:
    title           : RTSP Session/2.0
  Duration: N/A, start: 0.430000, bitrate: N/A
    Stream #1:0: Video: h264 (High), yuvj420p(pc, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 20 fps, 100 tbr, 90k tbn, 40 tbc
Guessed Channel Layout for Input Stream #2.0 : stereo
Input #2, alsa, from 'default':
  Duration: N/A, start: 1588833833.133715, bitrate: 1411 kb/s
    Stream #2:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  Stream #1:0 (h264) -> scale (graph 0)
  overlay (graph 0) -> Stream #0:0 (flv)
  Stream #2:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x3389140] concealing 3081 DC, 3081 AC, 3081 MV errors in I frame
[rtsp @ 0x31cc480] max delay reached. need to consume packet
[rtsp @ 0x31cc480] RTP: missed 51 packets
[swscaler @ 0x3b3b6f0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x3b56cf0] deprecated pixel format used, make sure you did set range correctly
Output #0, flv, to 'rtmp://127.0.0.1/sesja/transmisja':
  Metadata:
    title           : RTSP Session/2.0
    encoder         : Lavf58.23.100
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 20 fps, 1k tbn, 20 tbc (default)
    Metadata:
      encoder         : Lavc58.40.100 flv
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.40.100 aac
frame=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   [h264 @ 0x3831c40] error while decoding MB 30 1, bytestream -11
[h264 @ 0x3831c40] concealing 3539 DC, 3539 AC, 3539 MV errors in P frame
frame=    2 fps=1.5 q=2.0 size=       0kB time=00:00:00.05 bitrate=  57.9kbits/s[h264 @ 0x384a1a0] error while decoding MB 64 6, bytestream -13
[h264 @ 0x384a1a0] concealing 3105 DC, 3105 AC, 3105 MV errors in P frame
frame=    6 fps=2.8 q=7.0 size=     265kB time=00:00:01.50 bitrate=1447.5kbits/sframe=    9 fps=3.3 q=15.5 size=     270kB time=00:00:01.50 bitrate=1472.7kbits/frame=   13 fps=3.7 q=26.4 size=     274kB time=00:00:01.50 bitrate=1496.4kbits/frame=   15 fps=3.6 q=30.2 size=     276kB time=00:00:01.50 bitrate=1507.6kbits/frame=   17 fps=3.6 q=31.0 size=     278kB time=00:00:01.50 bitrate=1518.9kbits/frame=   20 fps=3.6 q=31.0 size=     284kB time=00:00:01.50 bitrate=1551.1kbits/[h264 @ 0x3389140] error while decoding MB 42 4, bytestream -5
[h264 @ 0x3389140] concealing 3287 DC, 3287 AC, 3287 MV errors in P frame
frame=   23 fps=3.7 q=31.0 size=     287kB time=00:00:01.50 bitrate=1568.5kbits/frame=   24 fps=3.6 q=31.0 size=     288kB time=00:00:01.50 bitrate=1574.1kbits/frame=   60 fps=5.7 q=31.0 size=     295kB time=00:00:02.95 bitrate= 817.9kbits/frame=   62 fps=5.5 q=31.0 size=     418kB time=00:00:03.05 bitrate=1121.3kbits/frame=   62 fps=5.2 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   62 fps=5.0 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   62 fps=4.8 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   62 fps=4.6 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   62 fps=4.4 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   62 fps=4.2 q=31.0 size=     419kB time=00:00:03.07 bitrate=1114.9kbits/frame=   63 fps=4.1 q=31.0 size=     419kB time=00:00:03.10 bitrate=1108.0kbits/frame=   65 fps=4.0 q=31.0 size=     424kB time=00:00:03.20 bitrate=1084.3kbits/frame=   68 fps=4.0 q=31.0 size=     429kB time=00:00:03.35 bitrate=1049.4kbits/frame=   71 fps=4.0 q=31.0 size=     435kB time=00:00:03.50 bitrate=1017.3kbits/frame=   74 fps=4.1 q=31.0 size=     441kB time=00:00:03.65 bitrate= 988.5kbits/frame=   77 fps=4.1 q=31.0 size=     446kB time=00:00:03.80 bitrate= 961.0kbits/frame=   80 fps=4.1 q=31.0 size=     452kB time=00:00:03.95 bitrate= 936.5kbits/frame=   83 fps=4.1 q=31.0 size=     457kB time=00:00:04.10 bitrate= 913.1kbits/frame=   85 fps=4.1 q=31.0 size=     461kB time=00:00:04.21 bitrate= 896.4kbits/frame=   88 fps=4.1 q=31.0 size=     467kB time=00:00:04.35 bitrate= 878.6kbits/frame=   91 fps=4.1 q=31.0 size=     473kB time=00:00:04.50 bitrate= 860.1kbits/[flv @ 0x37246b0] Failed to update header with correct duration.
[flv @ 0x37246b0] Failed to update header with correct filesize.
frame=   93 fps=4.0 q=31.0 Lsize=     478kB time=00:00:04.63 bitrate= 844.7kbits/s dup=38 drop=36 speed=0.202x    
video:425kB audio:49kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.859331%
[aac @ 0x3268610] Qavg: 185.380
Exiting normally, received signal 2.


  



  Thanks