#8505: fast aac encoder produces invalid output for x86 32-bit builds
-------------------------------------+-------------------------------------
Reporter: | Owner: (none)
LeadAssimilator |
Type: defect | Status: open
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: regression | Blocked By:
aac |
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by Simon):
I'm investigating a reproduction with:
ffmpeg version N-66244-g468615f204-static
https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2023 the FFmpeg
developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
--cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
--enable-libgme --enable-gray --enable-libfribidi --enable-libass
--enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband
--enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis
--enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-
amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
libavutil 58. 13.101 / 58. 13.101
libavcodec 60. 21.100 / 60. 21.100
libavformat 60. 9.100 / 60. 9.100
libavdevice 60. 2.100 / 60. 2.100
libavfilter 9. 8.102 / 9. 8.102
libswscale 7. 3.100 / 7. 3.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100
Hyper fast Audio and Video encoder
(is N-66244-g468615f204-static this before or after the mentioned commit?)
On a specific audio input, subsequent decode reliably produces :
[aac @ 0xcba1d80] Number of bands (43) exceeds limit (41).ed=98.4x
[aist#0:1/aac @ 0xcbcb800] Error submitting packet to decoder: Invalid
data found when processing input
Encode command:
./ffmpeg -i ./media/aacorg.mp4 -y -dn -vn ./media/aaconly.mp4
Decode command:
./ffmpeg -i ./media/aaconly.mp4 -f wav -vn -y /dev/null
This version seems to not reproduce the issue:
ffmpeg version 6.1-static https://johnvansickle.com/ffmpeg/ Copyright (c)
2000-2023 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
--cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
--enable-libgme --enable-gray --enable-libaom --enable-libfribidi
--enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt
--enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
--enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid
--enable-libzvbi --enable-libzimg
libavutil 58. 29.100 / 58. 29.100
libavcodec 60. 31.102 / 60. 31.102
libavformat 60. 16.100 / 60. 16.100
libavdevice 60. 3.100 / 60. 3.100
libavfilter 9. 12.100 / 9. 12.100
libswscale 7. 5.100 / 7. 5.100
libswresample 4. 12.100 / 4. 12.100
libpostproc 57. 3.100 / 57. 3.100
Hyper fast Audio and Video encoder
I am also unable to reproduce with 7.0.2:
ffmpeg version 7.0.2-static https://johnvansickle.com/ffmpeg/ Copyright
(c) 2000-2024 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --enable-gpl --enable-version3 --enable-static --disable-
debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
--cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
--enable-libgme --enable-gray --enable-libaom --enable-libfribidi
--enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt
--enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
--enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid
--enable-libzvbi --enable-libzimg
libavutil 59. 8.100 / 59. 8.100
libavcodec 61. 3.100 / 61. 3.100
libavformat 61. 1.100 / 61. 1.100
libavdevice 61. 1.100 / 61. 1.100
libavfilter 10. 1.100 / 10. 1.100
libswscale 8. 1.100 / 8. 1.100
libswresample 5. 1.100 / 5. 1.100
libpostproc 58. 1.100 / 58. 1.100
Universal media converter
However, if I use -ss to start the encoding from 1 hour into the audio
(the issue occurs at ~01:47:14), the issues does not occur. If I
transcode to mp3, and then encode, the issue does not occur. I can only
reproduce from the original aac input (with or without video in the source
mp4).
So the issue is very hard to reproduce, so it's possible the mods MAY have
just changed the parameters enough to hide it for now.
unfortunately I don't have permission to share the complete source audio,
and trying to trim it prevents the issue from occurring.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8505#comment:26>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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