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  • ffmpeg convert webm to mp4 throw err "Could not find codec parameters for stream 0 (Video : vp9, none(tv, bt709), 854x480) : unspecified pixel format" [closed]

    25 juillet 2024, par chikadance
    /tmp $ ffmpeg -i /tmp/t.webm /tmp/t.mp4 -y
ffmpeg version 3.4.11-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[matroska,webm @ 0x560e1a59a040] Could not find codec parameters for stream 0 (Video: vp9, none(tv, bt709), 854x480): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, matroska,webm, from '/tmp/t.webm':
  Metadata:
    ENCODER         : Lavf57.83.100
  Duration: 00:00:30.00, start: -0.007000, bitrate: 696 kb/s
    Stream #0:0(eng): Video: vp9, none(tv, bt709), 854x480, SAR 1:1 DAR 427:240, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      DURATION        : 00:00:29.996000000
    Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    Metadata:
      DURATION        : 00:00:29.980000000
Stream mapping:
  Stream #0:0 -> #0:0 (vp9 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (opus (native) -> aac (native))
Press [q] to stop, [?] for help
Too many packets buffered for output stream 0:1.
[aac @ 0x560e1a5a0bc0] Qavg: 226.401
[aac @ 0x560e1a5a0bc0] 2 frames left in the queue on closing
Conversion failed!


    


    how to convert webm to mp4

    


  • avutil/mem_internal : Don't include stdalign.h on MSVC

    17 décembre 2024, par Martin Storsjö
    avutil/mem_internal : Don't include stdalign.h on MSVC

    It's currently actually not used in MSVC builds, since
    
6e49b8699657b808b7dc80033f2c3f2d0e029fa3.
    

    Older versions of MSVC (or, in particular, older versions of UCRT)
    
don't have stdalign.h ; it's available since WinSDK 10.0.20348.0 ;
    
such a new enough version has been installed by default only since
    
MSVC 2022 17.4 and newer.
    

    With this change, ffmpeg can still be built with MSVC 2019 16.8
    
(v19.28).
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavutil/mem_internal.h

  • ffmpeg mp4 to hls transcode fails on Azure Windows Server Image [closed]

    13 février, par James Weatherhead

    I am having an issue with transcoding an mp4 (any mp4) to hls. If I run the command below on my Windows 11 machine it works fine. If I run it on a clean Windows 11 VM, it works fine. If I run it on a clean Windows 2022 Server VM it works fine. If I create a Windows 2022 server image in Azure and run it... it fails (see error below)

    &#xA;

    I feel like something that FFMPEG needs is missing from the default server image in Azure. Has anyone experienced this issue and found a way to solve it ?

    &#xA;

    The command I am using :

    &#xA;

    ffmpeg.exe -i LowPriVMs-1.mp4 -filter_complex "[0:v]split=1[v1] ; [v1]scale=w=1920:h=1080[v1out] ; " -map "[v1out]" -c:v:0 mpeg4 -b:v:0 5000k -maxrate:v:0 5350k -bufsize:v:0 7500k -map a:0 -c:a aac -b:a:0 192k -ac 2 -f hls -hls_time 10 -hls_playlist_type vod -hls_flags independent_segments -hls_segment_type mpegts -hls_segment_filename stream_%v/data%03d.ts -master_pl_name master.m3u8 -var_stream_map "v:0,a:0" stream_%v/playlist.m3u8

    &#xA;

    The error returned by FFMPEG is :

    &#xA;

    [out#0/hls @ 00000204c6aded40] Could not write header (incorrect codec parameters ?) : Invalid argument

    &#xA;

    Has anyone else encountered this and found a solution ? I wondered if it is required to add a Feature Pack or some such dependency to Windows ?

    &#xA;

    Thanks&#xA;James

    &#xA;

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