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  1. Member
    Join Date
    Jul 2021
    Location
    Paris
    Search Comp PM
    Hi
    I save VHS on DVD recorder HDD.
    Now with easycap, i see good picture and sound with ffplay on my windows10 PC.
    My issue is when I want recorder to my PC.
    I use command:
    ffmpeg -loglevel verbose -f dshow -vcodec mjpeg -video_size 720x480 -framerate 25 -i video="AV TO USB2.0":audio="Microphone (USB2.0 MIC)" -c:v copy -c:a copy R:/"Corse2000-2021062x.mpg" -async 1 -vsync 1
    i use q to stop
    I am not able to read my file and ffplay Corse2000-2021062x.mpg gives
    ffplay version 2021-01-09-git-2e2891383e-full_build-www.gyan.dev Copyright (c) 2003-2021 the FFmpeg developers
    built with gcc 10.2.0 (Rev6, 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-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --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-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
    libavutil 56. 63.100 / 56. 63.100
    libavcodec 58.115.102 / 58.115.102
    libavformat 58. 65.101 / 58. 65.101
    libavdevice 58. 11.103 / 58. 11.103
    libavfilter 7. 95.100 / 7. 95.100
    libswscale 5. 8.100 / 5. 8.100
    libswresample 3. 8.100 / 3. 8.100
    libpostproc 55. 8.100 / 55. 8.100
    [mpeg @ 000001d4f9a0d4c0] probed stream 0 failedB sq= 0B f=0/0
    [mpeg @ 000001d4f9a0d4c0] Could not find codec parameters for stream 0 (Video: none, none): unknown codec
    Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
    Input #0, mpeg, from 'Corse2000-2021062x.mpg':
    8195 kb/sn: 00:00:19.24, start: 0.500000, bitrate: nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
    Stream #0:0[0x1e0]: Video: none, none, 25 tbr, 90k tbn
    No decoder could be found for codec none
    Failed to open file 'Corse2000-2021062x.mpg' or configure filtergraph

    ffprobe -show_frames -select_streams v -i Corse2000-2021062x.mpg 2>&1
    ffprobe version 2021-01-09-git-2e2891383e-full_build-www.gyan.dev Copyright (c) 2007-2021 the FFmpeg developers
    built with gcc 10.2.0 (Rev6, 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-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --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-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
    libavutil 56. 63.100 / 56. 63.100
    libavcodec 58.115.102 / 58.115.102
    libavformat 58. 65.101 / 58. 65.101
    libavdevice 58. 11.103 / 58. 11.103
    libavfilter 7. 95.100 / 7. 95.100
    libswscale 5. 8.100 / 5. 8.100
    libswresample 3. 8.100 / 3. 8.100
    libpostproc 55. 8.100 / 55. 8.100
    [mpeg @ 0000012fe8a9a5c0] probed stream 0 failed
    [mpeg @ 0000012fe8a9a5c0] Could not find codec parameters for stream 0 (Video: none, none): unknown codec
    Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
    Input #0, mpeg, from 'Corse2000-2021062x.mpg':
    Duration: 00:00:19.24, start: 0.500000, bitrate: 8195 kb/s
    Stream #0:0[0x1e0]: Video: none, none, 25 tbr, 90k tbn
    Unsupported codec with id 0 for input stream 0

    have you some idea?
    Best regards
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  2. I don't think you can use the mjpeg format in a .mpg file, if the only option from the capture card is mjpeg you would need to use .mkv or .avi. You shouldn't need to use mjpeg on most capture cards though.

    Also, are you capturing PAL/SECAM or NTSC? 720x480 is NTSC, framerate 25 is PAL/SECAM, so 720x480 with 25 frames per second does not make sense.
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  3. Member
    Join Date
    Jul 2021
    Location
    Paris
    Search Comp PM
    I cancel framerate 25, I add rtbufsize 100M, I use .avi and it is very good!!! Thank you very much oln
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