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Sur d’autres sites (12998)

  • How to config FFmpeg for xrgb and Aver Media capture card [closed]

    12 mai 2023, par Plotter Desalor

    I'm trying to use FFmpeg through ffplay to display a capture card output as lossless as possible.

    


    My capture card is named "Live Gamer Ultra-Video"

    


    In OBS, the NV12, YV12, P010 and YUY2 lead to blurriness around text and fine pixels edges, but the XRGB one offer clear output. So I've tried to focus on this mode with FFmpeg as the default one lead to same blurriness seen in OBS.

    


    Running "ffmpeg -f dshow -list_options true -i video="Live Gamer Ultra-Video" show me this result
(i've only kept line with wanted resolution)

    


    ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
[dshow @ 00000240bf0eac40] DirectShow video device options (from video devices)
[dshow @ 00000240bf0eac40]  Pin "Capturer" (alternative pin name "0")
[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50
[dshow @ 00000240bf0eac40]   pixel_format=yuyv422  min s=2560x1440 fps=30 max s=2560x1440 fps=50 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002
[dshow @ 00000240bf0eac40]   pixel_format=yuv420p  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002
[dshow @ 00000240bf0eac40]   pixel_format=nv12  min s=2560x1440 fps=30 max s=2560x1440 fps=60.0002 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30
[dshow @ 00000240bf0eac40]   unknown compression type 0xE436EB7D  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)
[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30
[dshow @ 00000240bf0eac40]   unknown compression type 0x30313050  min s=2560x1440 fps=30 max s=2560x1440 fps=30 (tv, bt709/bt709/unknown, topleft)

video=Live Gamer Ultra-Video: Immediate exit requested


    


    "unknown compression type 0xE436EB7D" is a pretty bad start but from https://trac.ffmpeg.org/ticket/6279 I could figured out it was just unproperly parsed RGB24 format

    


    But if I run a very simple "ffplay -f dshow -i video="Live Gamer Ultra-Video" -pixel_format rgb24"
I got this output

    


    ffplay version 6.0-essentials_build-www.gyan.dev Copyright (c) 2003-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
[dshow @ 000001ec3fa39300] Could not set video options   0B f=0/0
video=Live Gamer Ultra-Video: I/O error


    


    How could I use rgb format with this capture card ?

    


    If not possible, any other format leading to proper output would be ok too.
I've tried parameters from this topic Capture full-range/lossless rgb frame from capture card that supports NV12 and YUYV output without any good result sadly.

    


  • Why does a command in my Bash-script return 0 even when it fails ? Python, Whisper, ffmpeg

    10 juin 2024, par d-b

    I have a bash script that executes whisper on all sound files in a directory. Whisper uses ffmpeg to decode sound files to a format it can handle. One of the files in the directory was corrupt and caused ffmpeg to fail. The first time I executed my script it returned 1 when it hit that file but when I try to reproduce the error it always returns 0.

    


    Here is the log from the first run when 1 was returned :

    


    Traceback (most recent call last):&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 48, in load_audio&#xA;    .run(cmd=["ffmpeg", "-nostdin"], capture_stdout=True, capture_stderr=True)&#xA;     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/ffmpeg/_run.py", line 325, in run&#xA;    raise Error(&#x27;ffmpeg&#x27;, out, err)&#xA;ffmpeg._run.Error: ffmpeg error (see stderr output for detail)&#xA;&#xA;The above exception was the direct cause of the following exception:&#xA;&#xA;Traceback (most recent call last):&#xA;  File "/Users/db/Library/Python/3.11/bin/whisper", line 8, in <module>&#xA;    sys.exit(cli())&#xA;             ^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/transcribe.py", line 437, in cli&#xA;    result = transcribe(model, audio_path, temperature=temperature, **args)&#xA;             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/transcribe.py", line 121, in transcribe&#xA;    mel = log_mel_spectrogram(audio, padding=N_SAMPLES)&#xA;          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 130, in log_mel_spectrogram&#xA;    audio = load_audio(audio)&#xA;            ^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 51, in load_audio&#xA;    raise RuntimeError(f"Failed to load audio: {e.stderr.decode()}") from e&#xA;RuntimeError: Failed to load audio: ffmpeg version 4.4.4 Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)&#xA;  configuration: --prefix=/opt/local --cc=/usr/bin/clang --mandir=/opt/local/share/man --enable-audiotoolbox --disable-indev=jack --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-opencl --disable-outdev=xv --enable-sdl2 --disable-securetransport --enable-videotoolbox --enable-avfilter --enable-avresample --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libfribidi --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libzimg --enable-libzvbi --enable-lzma --enable-pthreads --enable-shared --enable-swscale --enable-zlib --enable-libaom --enable-libsvtav1 --arch=x86_64 --enable-x86asm --enable-gpl --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-postproc&#xA;  libavutil      56. 70.100 / 56. 70.100&#xA;  libavcodec     58.134.100 / 58.134.100&#xA;  libavformat    58. 76.100 / 58. 76.100&#xA;  libavdevice    58. 13.100 / 58. 13.100&#xA;  libavfilter     7.110.100 /  7.110.100&#xA;  libavresample   4.  0.  0 /  4.  0.  0&#xA;  libswscale      5.  9.100 /  5.  9.100&#xA;  libswresample   3.  9.100 /  3.  9.100&#xA;  libpostproc    55.  9.100 / 55.  9.100&#xA;/soundfile1.opus: Invalid data found when processing input&#xA;&#xA;&#xA;exit: 1 //this is my own output&#xA;</module>

    &#xA;

    and here is an example of when it returns 0 despite the input file is corrupt :

    &#xA;

    % whisper soundfile1.opus&#xA;&#xA;Traceback (most recent call last):&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 58, in load_audio&#xA;    out = run(cmd, capture_output=True, check=True).stdout&#xA;          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/subprocess.py", line 571, in run&#xA;    raise CalledProcessError(retcode, process.args,&#xA;subprocess.CalledProcessError: Command &#x27;[&#x27;ffmpeg&#x27;, &#x27;-nostdin&#x27;, &#x27;-threads&#x27;, &#x27;0&#x27;, &#x27;-i&#x27;, &#x27;soundfile1.opus&#x27;, &#x27;-f&#x27;, &#x27;s16le&#x27;, &#x27;-ac&#x27;, &#x27;1&#x27;, &#x27;-acodec&#x27;, &#x27;pcm_s16le&#x27;, &#x27;-ar&#x27;, &#x27;16000&#x27;, &#x27;-&#x27;]&#x27; returned non-zero exit status 1.&#xA;&#xA;The above exception was the direct cause of the following exception:&#xA;&#xA;Traceback (most recent call last):&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/transcribe.py", line 597, in cli&#xA;    result = transcribe(model, audio_path, temperature=temperature, **args)&#xA;             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/transcribe.py", line 133, in transcribe&#xA;    mel = log_mel_spectrogram(audio, model.dims.n_mels, padding=N_SAMPLES)&#xA;          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 140, in log_mel_spectrogram&#xA;    audio = load_audio(audio)&#xA;            ^^^^^^^^^^^^^^^^^&#xA;  File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 60, in load_audio&#xA;    raise RuntimeError(f"Failed to load audio: {e.stderr.decode()}") from e&#xA;RuntimeError: Failed to load audio: ffmpeg version 4.4.4 Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)&#xA;  configuration: --prefix=/opt/local --cc=/usr/bin/clang --mandir=/opt/local/share/man --enable-audiotoolbox --disable-indev=jack --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-opencl --disable-outdev=xv --enable-sdl2 --disable-securetransport --enable-videotoolbox --enable-avfilter --enable-avresample --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libfribidi --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libzimg --enable-libzvbi --enable-lzma --enable-pthreads --enable-shared --enable-swscale --enable-zlib --enable-libaom --enable-libsvtav1 --arch=x86_64 --enable-x86asm --enable-gpl --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-postproc&#xA;  libavutil      56. 70.100 / 56. 70.100&#xA;  libavcodec     58.134.100 / 58.134.100&#xA;  libavformat    58. 76.100 / 58. 76.100&#xA;  libavdevice    58. 13.100 / 58. 13.100&#xA;  libavfilter     7.110.100 /  7.110.100&#xA;  libavresample   4.  0.  0 /  4.  0.  0&#xA;  libswscale      5.  9.100 /  5.  9.100&#xA;  libswresample   3.  9.100 /  3.  9.100&#xA;  libpostproc    55.  9.100 / 55.  9.100&#xA;soundfile1.opus: Invalid data found when processing input&#xA;&#xA;Skipping soundfile1.opus due to RuntimeError: Failed to load audio: ffmpeg version 4.4.4 Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)&#xA;  configuration: --prefix=/opt/local --cc=/usr/bin/clang --mandir=/opt/local/share/man --enable-audiotoolbox --disable-indev=jack --disable-libjack --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-opencl --disable-outdev=xv --enable-sdl2 --disable-securetransport --enable-videotoolbox --enable-avfilter --enable-avresample --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libfribidi --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libzimg --enable-libzvbi --enable-lzma --enable-pthreads --enable-shared --enable-swscale --enable-zlib --enable-libaom --enable-libsvtav1 --arch=x86_64 --enable-x86asm --enable-gpl --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-postproc&#xA;  libavutil      56. 70.100 / 56. 70.100&#xA;  libavcodec     58.134.100 / 58.134.100&#xA;  libavformat    58. 76.100 / 58. 76.100&#xA;  libavdevice    58. 13.100 / 58. 13.100&#xA;  libavfilter     7.110.100 /  7.110.100&#xA;  libavresample   4.  0.  0 /  4.  0.  0&#xA;  libswscale      5.  9.100 /  5.  9.100&#xA;  libswresample   3.  9.100 /  3.  9.100&#xA;  libpostproc    55.  9.100 / 55.  9.100&#xA;soundfile1.opus: Invalid data found when processing input&#xA;&#xA;% echo $?&#xA;0&#xA;

    &#xA;

    When I try to reproduce the behaviour I have both tried to execute the script as well as just running the actual line of code from the command prompt. The actual script looks like this :

    &#xA;

    if whisper "$file" >> "${directory}/../${transdir}/${name}.txt"; then&#xA;    whispersuccess=$?&#xA;    echo "exit code $whispersuccess"&#xA;else&#xA;    whispersuccess=$?&#xA;    echo "exit code: $whispersuccess"&#xA;

    &#xA;

    I want it to return ¬0 when something like this happens. How do I achieve this ?

    &#xA;

  • ffmpeg rtsp record problems [closed]

    3 mai 2023, par user429643

    I have 3 ip cameras from which I take rtsp stream and record mp4 files via ffmpeg. Previously, everything worked well, but some time ago, the recording from second camera ends after a some period of time (before it should be ended).&#xA;Program code :

    &#xA;

    if [ "$1" = "1" ]; then&#xA;    ffmpeg -rtsp_transport tcp -use_wallclock_as_timestamps 1 -fflags &#x2B;genpts -fflags -discardcorrupt -i rtsp://$CAMLogin@$CAM1IP:$RTSPport/Streaming/Channels/101 -r 20 -vcodec copy -an -t $RECtime -vsync vfr $FULLpath/1.mp4 -report null >/dev/null 2>$FULLpath/cam01.log &amp;&#xA;    ffmpeg -i rtsp://$CAMLogin@$CAM1IP:$RTSPport/Streaming/Channels/101 -t 1 -vframes 1 -s 1280x720 -f image2 $FULLpath/1.jpg null >/dev/null 2>$FULLpath/cam_jpg01.log &amp;&#xA;fi&#xA;&#xA;if [ "$2" = "1" ]; then&#xA;    ffmpeg -rtsp_transport tcp -use_wallclock_as_timestamps 1 -fflags &#x2B;genpts -fflags -discardcorrupt -i rtsp://$CAMLogin@$CAM2IP:$RTSPport/cam/realmonitor?channel=1&amp;subtype=0 -r 20 -vcodec copy -an -t $RECtime -vsync vfr $FULLpath/2.mp4 -report null >/dev/null 2>$FULLpath/cam02.log &amp;&#xA;    ffmpeg -i $CENTRAL -t 1 -vframes 1 -s 1280x720 -f image2 $FULLpath/2.jpg null >/dev/null 2>$FULLpath/cam_jpg02.log &amp;&#xA;fi&#xA;&#xA;if [ "$3" = "1" ]; then&#xA; ffmpeg -rtsp_transport tcp -use_wallclock_as_timestamps 1 -fflags &#x2B;genpts -fflags -discardcorrupt -i rtsp://$CAMLogin@$CAM3IP:$RTSPport/Streaming/Channels/101 -r 20 -vcodec copy -an -t $RECtime -vsync vfr $FULLpath/3.mp4 -report null >/dev/null 2>$FULLpath/cam03.log &amp;&#xA; ffmpeg -i rtsp://$CAMLogin@$CAM3IP:$RTSPport/Streaming/Channels/101 -t 1 -vframes 1 -s 1280x720 -f image2 $FULLpath/3.jpg null >/dev/null 2>$FULLpath/cam_jpg03.log &amp;&#xA;

    &#xA;

    If I set a certain recording time, then the problem occurs only from the second camera.

    &#xA;

    FFMPEG log for first camera :

    &#xA;

    ffmpeg started on 2023-05-03 at 12:04:01&#xA;Report written to "ffmpeg-20230503-120401.log"&#xA;ffmpeg version 2.8.14-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers&#xA;  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609&#xA;  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g&#x2B;&#x2B; --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv&#xA;  libavutil      54. 31.100 / 54. 31.100&#xA;  libavcodec     56. 60.100 / 56. 60.100&#xA;  libavformat    56. 40.101 / 56. 40.101&#xA;  libavdevice    56.  4.100 / 56.  4.100&#xA;  libavfilter     5. 40.101 /  5. 40.101&#xA;  libavresample   2.  1.  0 /  2.  1.  0&#xA;  libswscale      3.  1.101 /  3.  1.101&#xA;  libswresample   1.  2.101 /  1.  2.101&#xA;  libpostproc    53.  3.100 / 53.  3.100&#xA;Input #0, rtsp, from &#x27;rtsp://username:password@192.168.8.98:554/Streaming/Channels/101&#x27;:&#xA;  Metadata:&#xA;    title           : Media Presentation&#xA;  Duration: N/A, start: 1683104641.578533, bitrate: N/A&#xA;    Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 20 fps, 20 tbr, 90k tbn, 40 tbc&#xA;[mp4 @ 0x23f8d80] Codec for stream 0 does not use global headers but container format requires global headers&#xA;Output #0, mp4, to &#x27;/var/www/view/dist/videos/archive/2023-05-03/c24706a011ae90262875803ad73b8a2b/1.mp4&#x27;:&#xA;  Metadata:&#xA;    title           : Media Presentation&#xA;    encoder         : Lavf56.40.101&#xA;    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 20 fps, 20 tbr, 10240 tbn, 20 tbc&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (copy)&#xA;Press [q] to stop, [?] for help&#xA;[mp4 @ 0x23f8d80] Non-monotonous DTS in output stream 0:0; previous: 6516, current: 6516; changing to 6517. This may result in incorrect timestamps in the output file.&#xA;[mp4 @ 0x23f8d80] Non-monotonous DTS in output stream 0:0; previous: 6523, current: 6523; changing to 6524. This may result in incorrect timestamps in the output file.&#xA;frame=   34 fps=0.0 q=-1.0 size=    1922kB time=00:00:01.52 bitrate=10321.7kbits/s    &#xA;frame=   45 fps= 41 q=-1.0 size=    2019kB time=00:00:02.07 bitrate=7978.7kbits/s&#xA;....&#xA;....&#xA;....&#xA;....&#xA;....&#xA;frame=144051 fps= 20 q=-1.0 size= 3530396kB time=02:00:01.84 bitrate=4015.8kbits/s    &#xA;frame=144055 fps= 20 q=-1.0 Lsize= 3532194kB time=02:00:02.04 bitrate=4017.7kbits/s    &#xA;video:3530424kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.050154%   &#xA;

    &#xA;

    FFMPEG log for second camera :

    &#xA;

    ffmpeg started on 2023-05-03 at 12:04:01&#xA;Report written to "ffmpeg-20230503-120401.log"&#xA;ffmpeg version 2.8.14-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers&#xA;  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609&#xA;  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g&#x2B;&#x2B; --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv&#xA;  libavutil      54. 31.100 / 54. 31.100&#xA;  libavcodec     56. 60.100 / 56. 60.100&#xA;  libavformat    56. 40.101 / 56. 40.101&#xA;  libavdevice    56.  4.100 / 56.  4.100&#xA;  libavfilter     5. 40.101 /  5. 40.101&#xA;  libavresample   2.  1.  0 /  2.  1.  0&#xA;  libswscale      3.  1.101 /  3.  1.101&#xA;  libswresample   1.  2.101 /  1.  2.101&#xA;  libpostproc    53.  3.100 / 53.  3.100&#xA;[rtsp @ 0x134adc0] DTS discontinuity in stream 1: packet 3 with DTS 80789022795410, packet 4 with DTS 80789022798792&#xA;[rtsp @ 0x134adc0] DTS discontinuity in stream 1: packet 7 with DTS 80789022798811, packet 8 with DTS 80789022809865&#xA;Guessed Channel Layout for  Input Stream #0.1 : mono&#xA;Input #0, rtsp, from &#x27;rtsp://username:password@192.168.8.22:554/cam/realmonitor?channel=1&amp;subtype=0&#x27;:&#xA;  Metadata:&#xA;    title           : Media Server&#xA;  Duration: N/A, start: 1683104641.570750, bitrate: N/A&#xA;    Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709), 4096x1800, 90k tbr, 90k tbn, 180k tbc&#xA;    Stream #0:1: Audio: pcm_alaw, 48000 Hz, 1 channels, s16, 384 kb/s&#xA;[mp4 @ 0x1538e00] Codec for stream 0 does not use global headers but container format requires global headers&#xA;Output #0, mp4, to &#x27;/var/www/view/dist/videos/archive/2023-05-03/c24706a011ae90262875803ad73b8a2b/2.mp4&#x27;:&#xA;  Metadata:&#xA;    title           : Media Server&#xA;    encoder         : Lavf56.40.101&#xA;    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 4096x1800, q=2-31, 90k tbr, 10240 tbn, 20 tbc&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (copy)&#xA;Press [q] to stop, [?] for help&#xA;frame=   31 fps=0.0 q=-1.0 size=    1170kB time=00:00:01.46 bitrate=6543.0kbits/s    &#xA;frame=   40 fps= 39 q=-1.0 size=    1435kB time=00:00:01.92 bitrate=6120.5kbits/s    &#xA;Invalid UE golomb code&#xA;frame=   52 fps= 34 q=-1.0 size=    2099kB time=00:00:02.50 bitrate=6864.2kbits/s    &#xA;frame=   63 fps= 31 q=-1.0 size=    2399kB time=00:00:03.06 bitrate=6411.5kbits/s    &#xA;frame=   72 fps= 28 q=-1.0 size=    2670kB time=00:00:03.52 bitrate=6210.5kbits/s    &#xA;Invalid UE golomb code&#xA;...&#xA;...&#xA;...&#xA;...&#xA;Invalid UE golomb code&#xA;frame=27243 fps= 20 q=-1.0 size= 1046397kB time=00:22:42.09 bitrate=6293.3kbits/s    &#xA;frame=27254 fps= 20 q=-1.0 size= 1046712kB time=00:22:42.64 bitrate=6292.7kbits/s    &#xA;frame=27264 fps= 20 q=-1.0 size= 1046990kB time=00:22:43.12 bitrate=6292.1kbits/s    &#xA;frame=27275 fps= 20 q=-1.0 size= 1047290kB time=00:22:43.67 bitrate=6291.4kbits/s    &#xA;Invalid UE golomb code&#xA;frame=27285 fps= 20 q=-1.0 size= 1048022kB time=00:22:44.20 bitrate=6293.3kbits/s    &#xA;frame=27292 fps= 20 q=-1.0 Lsize= 1048561kB time=00:22:44.52 bitrate=6295.1kbits/s    &#xA;video:1048224kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.032150%&#xA;

    &#xA;

    Initially, I thought that the error was in timestamps, so I added arguments to ffmpeg :

    &#xA;

    -use_wallclock_as_timestamps 1&#xA;-fflags +genpts&#xA;-fflags -discardcorrupt&#xA;-vsync vfr

    &#xA;

    But this doesnt help.

    &#xA;

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