Opened 2 years ago

Last modified 2 years ago

#9096 new defect

Export of audio from avi fails

Reported by: marksugrue Owned by:
Priority: important Component: avformat
Version: git-master Keywords: avi regression
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Export of audio from an AVI (attached) fails in current version (git-master), but previously worked.

This is a regression since ef8cc06d6e50d3da7b781e126a3bce7929b53a55 and that it is probably related to #6551.

How to reproduce:

ffmpeg -i Rec1_0001.avi -c copy output.wav

output.wav is created but with no content.

Full output is here:

ffmpeg version 2021-02-07-git-a52b9464e4-essentials_build-www.gyan.dev Copyright (c) 2000-2021 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-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-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-libmfx --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      56. 64.100 / 56. 64.100
  libavcodec     58.121.100 / 58.121.100
  libavformat    58. 67.100 / 58. 67.100
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7.102.100 /  7.102.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[avi @ 00000249afc4da00] sample size (1) != block align (4)
[avi @ 00000249afc4da00] Could not find codec parameters for stream 0 (Video: mjpeg (MJPG / 0x47504A4D), none(bt470bg/unknown/unknown), 640x480): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, avi, from 'Rec1_0001.avi':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), none(bt470bg/unknown/unknown), 640x480, 24.99 fps, 24.99 tbr, 24.99 tbn, 24.99 tbc
  Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 32000 Hz, stereo, s16, 1024 kb/s
Output #0, wav, to 'output.wav':
  Metadata:
    ISFT            : Lavf58.67.100
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 32000 Hz, stereo, s16, 1024 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
Press [q] to stop, [?] for help
size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

Altering analyseduration and/or probesize has no effect.

Change History (1)

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