Fixes issue 1930

Originally committed as revision 23311 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23310 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23309 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23308 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23307 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23306 to svn://svn.ffmpeg.org/ffmpeg/trunk

proper position

Patch by trueice (his gmail account is obvious)

Originally committed as revision 23305 to svn://svn.ffmpeg.org/ffmpeg/trunk

exactly ends the remaining blocks.

Originally committed as revision 23304 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by James Zern for Google, Inc., jzern google com

Originally committed as revision 23303 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23302 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23301 to svn://svn.ffmpeg.org/ffmpeg/trunk

target regtest-lavfi_pix_fmts.

The lavfi_pix_fmts test is disabled, this because there are
many tests which are failing, and there are still some output files
which cannot be played by NUT/ffplay.

Originally committed as revision 23297 to svn://svn.ffmpeg.org/ffmpeg/trunk

CODEC_ID_RAWVIDEO <->  Y41B
CODEC_ID_RAWVIDEO <->  Y42B
CODEC_ID_RAWVIDEO <->  YUV9
CODEC_ID_RAWVIDEO <->  YVU9

These codec tags are listed in fourcc.org, and are already listed in
libavcodec/raw.c:ff_raw_pix_fmt_tags as AVI tags.

Originally committed as revision 23296 to svn://svn.ffmpeg.org/ffmpeg/trunk

This is probably what was originally intended; the codec pointers are all NULL.

Fix by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23295 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fix by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23294 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23293 to svn://svn.ffmpeg.org/ffmpeg/trunk

Fix by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23292 to svn://svn.ffmpeg.org/ffmpeg/trunk

Don't allocate st->codec, it will be overwritten by the memcpy a few
lines further down.

Fix by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23291 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Howard Chu, hyc at highlandsun dot com

Originally committed as revision 23290 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23289 to svn://svn.ffmpeg.org/ffmpeg/trunk

reached.

Originally committed as revision 23288 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23287 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Janne Grunau, janne-ffmpeg jannau net

Originally committed as revision 23286 to svn://svn.ffmpeg.org/ffmpeg/trunk

Patch by Cyril Russo, stage D nexvision A laposte net

Originally committed as revision 23285 to svn://svn.ffmpeg.org/ffmpeg/trunk

This isn't exactly semantically equivalent, but the field has already been
long abused to mean this, and writing it helps in determining a decent cfr
time base when transcoding from a mkv where the video codec stores none (VP8).

Originally committed as revision 23284 to svn://svn.ffmpeg.org/ffmpeg/trunk

This fixes aspect ratio calculation for encoding from files with 0/0 stored,
common with ogg/theora

Originally committed as revision 23280 to svn://svn.ffmpeg.org/ffmpeg/trunk

seeks needed for binary search when seeking to a previously seen
location.

Originally committed as revision 23279 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23277 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23276 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23275 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23273 to svn://svn.ffmpeg.org/ffmpeg/trunk

block size mode and info byte.

Originally committed as revision 23272 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23270 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23269 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23268 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23267 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23266 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23265 to svn://svn.ffmpeg.org/ffmpeg/trunk

remain valid. This fixes segfaults for those cases where data copy to
this invalid pointer is attempted.

Originally committed as revision 23264 to svn://svn.ffmpeg.org/ffmpeg/trunk

hexadecimal value.

Originally committed as revision 23262 to svn://svn.ffmpeg.org/ffmpeg/trunk