[FFmpeg-trac] #9096(avformat:new): Export of audio from avi fails
FFmpeg
trac at avcodec.org
Tue Feb 9 00:09:39 EET 2021
#9096: Export of audio from avi fails
-------------------------------------+-------------------------------------
Reporter: marksugrue | Type: defect
Status: new | Priority: important
Component: avformat | Version: git-
Keywords: avi | master
regression | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
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.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9096>
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