id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1881	in24 Little Endian PCM audio (pcm_s24le) in mov decoded incorrectly as Big Endian (pcm_s24be)	irius		"I have a MOV file with 2 audio tracks using the in24 codecID and the pcm_s24le format. (So audio is Little Endian).
However, ffmpeg interprets the tracks as Big Endian, so audio is not decoded properly. If I tell ffmpeg to decode it as pcm_s24le everything works fine. QT, vlc, Windows Media Player and any other player I tried decodes it just right, so I'm sure the file its OK.


How to reproduce:
{{{
% ffmpeg -i IN24_LittleEndian.mov -vn -acodec copy BAD_DecodedAudioOutput.MOV
}}}

However, everything works fine if I force the input audio codec with:
{{{
% ffmpeg -acodec pcm_s24le -i IN24_LittleEndian.mov -vn -acodec copy OK_DecodedAudioOutput.MOV
}}}

FFmpeg version is:

ffmpeg version N-46146-g11d695d
built on Oct 29 2012 18:06:25 with gcc 4.7.2 (GCC)  (32-bit static Windows build from Zeranoe'n)


To give a little bit more info, if I run ffprobe, you can see that ffmpeg thinks the audio is Big Endian:

{{{
%ffprobe IN24_LittleEndian.mov
ffprobe version N-46146-g11d695d Copyright (c) 2007-2012 the FFmpeg developers
  built on Oct 29 2012 18:06:25 with gcc 4.7.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass -
-enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenjpeg --enable-libo
pus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52.  1.100 / 52.  1.100
  libavcodec     54. 69.100 / 54. 69.100
  libavformat    54. 35.100 / 54. 35.100
  libavdevice    54.  3.100 / 54.  3.100
  libavfilter     3. 20.109 /  3. 20.109
  libswscale      2.  1.101 /  2.  1.101
  libswresample   0. 16.100 /  0. 16.100
  libpostproc    52.  1.100 / 52.  1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IN24_LittleEndian.mov':
  Metadata:
    major_brand     : JUNK
    minor_version   : 537199360
    compatible_brands: qt  JUNK
    creation_time   : 2012-08-31 14:30:11
    encoder         : Matrox ISO Writer mvdClipISO.dll
    encoder-eng     : Matrox ISO Writer mvdClipISO.dll
  Duration: 00:00:32.16, start: 0.000000, bitrate: 31111 kb/s
    Stream #0:0(eng): Video: dvvideo (dvcp / 0x70637664), yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28800 kb/s, SAR 59:54 DAR 295:216, 25 fps, 25 tbr, 25 tbn, 25 tb
c
    Metadata:
      creation_time   : 2012-08-31 14:30:11
      handler_name    : ?Matrox Alias Data Handler
    Stream #0:1(eng): Audio: pcm_s24be (in24 / 0x34326E69), 48000 Hz, 1 channels, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-08-31 14:30:11
      handler_name    : ?Matrox Alias Data Handler
    Stream #0:2(eng): Audio: pcm_s24be (in24 / 0x34326E69), 48000 Hz, 1 channels, s32, 1152 kb/s
    Metadata:
      creation_time   : 2012-08-31 14:30:11
      handler_name    : ?Matrox Alias Data Handler
}}}

I could provide the example MOV file but it's 100 Mbytes. I'll try to produce a much smaller example to reproduce the problem easily and attach it later."	defect	closed	normal	avformat	git-master	fixed	mov in24 pcm				1	0