[FFmpeg-trac] #873(FFmpeg:new): PCM signed big-endian encoding as unsigned
FFmpeg
trac at avcodec.org
Wed Jan 4 19:19:44 CET 2012
#873: PCM signed big-endian encoding as unsigned
-------------------------------------+-------------------------------------
Reporter: Glinx | Type: defect
Status: new | Priority: normal
Component: FFmpeg | Version:
Keywords: PCM signed | unspecified
big endian | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Signed pcm sound codec (pcm_s16be) is encoded as unsigned and with 3ch
audio instead of 6ch. After trying a few other pcm signed codecs they also
came out as unsigned.
Archlinux bugtracker sent a new snapshot to try, with the same result.
Downgrading to a previous (November) release sorted this issue for me.
All command line output from FFmpeg suggested all was well and also
signed.
I only noticed pcm audio (s16be) was infact unsigned and 3ch instead of
6ch when loading into the video editor (Cinelerra) and then re-checked
again with the Mediainfo program.
The command I use; ffmpeg -i in.MTS -vcodec dnxhd -threads 4 -b:v 240M
-pix_fmt yuv422p -acodec pcm_s16be -sn out.mov
(My .MTS files have PGS text stream).
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/873>
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