[FFmpeg-trac] #873(FFmpeg:new): PCM signed big-endian encoding as unsigned
FFmpeg
trac at avcodec.org
Thu Jan 5 21:32:55 CET 2012
#873: PCM signed big-endian encoding as unsigned
-------------------------------------+-------------------------------------
Reporter: Glinx | Owner:
Type: defect | Status: new
Priority: normal | Component: FFmpeg
Version: unspecified | Resolution:
Keywords: PCM signed | Blocked By:
big endian | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by Glinx):
mplayer output
[gavin at gavin-desktop MTS_tests]$ mplayer out.mov
MPlayer2 2.0-379-ge3f5043 (C) 2000-2011 MPlayer Team
162 audio & 361 video codecs
Playing out.mov.
Detected file format: QuickTime/MPEG-4/Motion JPEG 2000 format
(libavformat)
[lavf] stream 0: audio (pcm_s16be), -aid 0, -alang eng
Clip info:
major_brand: qt
minor_version: 512
compatible_brands: qt
creation_time: 1970-01-01 00:00:00
encoder: Lavf53.24.0
Load subtitles in .
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s16be, 0.0 kbit/0.00% (ratio: 0->576000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or
directory
AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample)
Video: no video
Starting playback...
A: 4.4 (04.3) of 4.8 (04.8) 0.5%
Exiting... (End of file)
[gavin at gavin-desktop MTS_tests]$
..and ffplay -i out.mov
[gavin at gavin-desktop MTS_tests]$ ffplay -i out.mov
ffplay version N-35110-g0b9a69f, Copyright (c) 2003-2011 the FFmpeg
developers
built on Nov 23 2011 12:55:01 with gcc 4.6.2
configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis
--enable-libxvid --enable-libx264 --enable-libvpx --enable-libtheora
--enable-libgsm --enable-libspeex --enable-postproc --enable-shared
--enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-
gpl --enable-version3 --enable-runtime-cpudetect --disable-debug
--disable-static
libavutil 51. 26. 0 / 51. 26. 0
libavcodec 53. 37. 0 / 53. 37. 0
libavformat 53. 21. 0 / 53. 21. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 49. 0 / 2. 49. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.24.0
Duration: 00:00:04.83, start: 0.000000, bitrate: 4609 kb/s
Stream #0:0(eng): Audio: pcm_s16be (lpcm / 0x6D63706C), 48000 Hz, 6
channels, s16, 4608 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name :
DataHandler
28.94 A-V: 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
Seek to 5% ( 0:00:00) of total duration ( 0:00:04) B f=0/0
1.72 A-V: 0.000 fd= 0 aq= 314KB vq= 0KB sq= 0B f=0/0
[gavin at gavin-desktop MTS_tests]$
I havnt a quicktime player - Cinelerra (uses quicktime for linux) loads
previous versions but not this one.
These two both suggest s16...
I remembered I have PiTiVi VE loaded. The unsigned culprit wouldnt load
the sound track in this VE either (screenshot attached)...
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/873#comment:6>
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