Resolved myself: The number of frames should be taken from the encoder.
On 12.12.2014 01:03, Peter Belkner wrote:
Hello,
I'm trying to encode to FLAC via avcodec/avformat. Unfortunately this
gives invalid FLACs. I'm following "doc/examples/transcoding.c" which,
of course, makes the problem reproducible.
If I transcode a valid FLAC to FLAC with the example program
"transcode" I get a FLAC which is not valid according to the FLAC
reference encoder:
> $ flac -t ./test/output/Track101.flac
>
> flac 1.2.1, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007
Josh Coalson
> flac comes with ABSOLUTELY NO WARRANTY. This is free software, and
you are
> welcome to redistribute it under certain conditions. Type `flac'
for details.
>
> Track101.flac: ERROR, MD5 signature mismatch
Such a FLAC can't be played with a typical FLAC decoder, but with FFmpeg.
On the other hand, the command line "ffmpeg" program produces valid
FLACs.
What's the difference between "ffmpeg" and "transcode"? What's missing
in "transcode"?
Peter
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