Fixes issue 1565.

Originally committed as revision 20593 to svn://svn.ffmpeg.org/ffmpeg/trunk

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This should fix lowres resolution changes.

Originally committed as revision 20589 to svn://svn.ffmpeg.org/ffmpeg/trunk

libtheoraenc and libtheoradec; libtheora is the pre-1.0 library.
Documented at http://theora.org/doc/libtheora-1.0/
Fixes issue1564

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not correctly supported.

See the thread:
"[FFmpeg-devel] [PATCH] Remove not truly supported formats support from the crop filter".

Originally committed as revision 20576 to svn://svn.ffmpeg.org/ffmpeg/trunk

instead of assuming it should occur right at given position.
This helps finding human-readable error descriptions in RTMP server replies.

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extra byte and are not compliant with ISO 14496-12.  This causes some strict
demuxers (notably the MPEG-4 ALS reference software) to fail.  It has been
confirmed that not writing the extra byte will still allow the generated MP4
files to work with QuickTime/iTunes/iPod.

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Patch by Robert Krüger, krueger signal7 de

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Ensure that jpeg does not use mbs that could require larger padding.
This might have been exploitable.

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to terminate, jobnr it does not point to a valid location in that case.

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decoder.
This fixes issue 1555

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XORed with source one or not, which went wrong with new block comparing code.
So track this condition explicitly.

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