This should not make any difference, yet some gcc versions on ARM
produce incorrect output without this fix.

Approved by Vitor.

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stream selection.

Make the counting starts from 0, and disable the corresponding playbck
when the selected stream number is negative.

See the thread:
" [FFmpeg-devel] [PATCH] Add documentation for -ast, -vst, -sst".


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rather than the subtitle stream N-1 when N is not zero.


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svq3_decode_slice_header() modifies the buffer used by the bitstream
reader.  Some of the bitstream readers cache a few bytes of data, which
must be flushed after such a modification.  Calling skip_bits_long(gb, 0)
achieves this.

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zero later. This should fix some valgrind warnings and hopefully FATE 
ra144 test on ARM.


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the timestamps because delay is not known for the first few frames.


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this will be needed once the parser can figure out has_b_frames
in av_find_stream_info().


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and for some raw h264 we managed to change the timebase twice before.


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Patch by Ivan Schreter, schreter gmx net


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flacdec.c.


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in mov.c for the demuxer. See "[PATCH] rename movenc.c MOVContext to
MOVMuxContext" thread on the mailinglist.



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