4mv motion vector passthrough

Originally committed as revision 3051 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 3047 to svn://svn.ffmpeg.org/ffmpeg/trunk

currently works only with mpeg1/2 source or some luck
may need -sync 0 as otherwise framedrops could lead to extreemly long b frame sequences

Originally committed as revision 3042 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 3035 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 3033 to svn://svn.ffmpeg.org/ffmpeg/trunk

moving ref_index from Picture to AVFrame

Originally committed as revision 3028 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 3027 to svn://svn.ffmpeg.org/ffmpeg/trunk

minor +-1 bugfix

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related cleanup

Originally committed as revision 2827 to svn://svn.ffmpeg.org/ffmpeg/trunk

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Originally committed as revision 2818 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 2816 to svn://svn.ffmpeg.org/ffmpeg/trunk

move AV_NOPTS_VALUE & AV_TIME_BASE from avformat.h -> avcodec.h
related fixes

Originally committed as revision 2814 to svn://svn.ffmpeg.org/ffmpeg/trunk

detect & warn if the user prvides pts only for some frames, and try to guess the missing ones

Originally committed as revision 2812 to svn://svn.ffmpeg.org/ffmpeg/trunk

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Originally committed as revision 2774 to svn://svn.ffmpeg.org/ffmpeg/trunk

multithreaded/SMP encoding for MPEG1/MPEG2/MPEG4/H263
all pthread specific code is in pthread.c
to try it, run configure --enable-pthreads and ffmpeg ... -threads <num>
the internal thread API is a simple AVCodecContext.execute() callback which executes a given function pointer with different arguments and returns after finishing all, that way no mutexes or other thread-mess is needed outside pthread.c

Originally committed as revision 2772 to svn://svn.ffmpeg.org/ffmpeg/trunk

- allow INTER4V macroblocks for FLV1 codec
- fixed issue in flv file format saving 8 mp3 frames per packet instead of 1
- fixed crasher in flv file format involving mp3 buffer handling
- added FLV1 codec support for swf file format (FlashPlayer6 or above
required) and made it default
- fixed broken mp3 support in swf file format
patch by (Tinic Uro <turo at macromedia dot com>)
cleanup by me

Originally committed as revision 2756 to svn://svn.ffmpeg.org/ffmpeg/trunk

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Originally committed as revision 2751 to svn://svn.ffmpeg.org/ffmpeg/trunk

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the other parts of the diff where
1. spelling fixes (rejected as only a small part of it could be applied automatically)
2. cosmetics (reindention, function reordering, var renaming, ...) with bugs (rejected)
3. rtp related stuff (rejetced as it breaks several codecs)
4. some changes to the intra/inter decission & scene change detection (quality tests needed first)

Originally committed as revision 2721 to svn://svn.ffmpeg.org/ffmpeg/trunk

and a few minor things i forgot to commit ...

Originally committed as revision 2718 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 2715 to svn://svn.ffmpeg.org/ffmpeg/trunk