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| author | Ivan Schreter <schreter@gmx.net> | 2009-02-21 20:11:47 +0000 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@rainbow.studorg.tuwien.ac.at> | 2009-02-21 20:11:47 +0000 |
| commit | 346db3ef7f82ea0ca8365e4a700c0113b2f3a86f (patch) | |
| tree | ae6337ec7c89f22c4d3e7608c3da15ef09226aa8 /libavcodec/avcodec.h | |
| parent | f5007cc84499b005028064786c628ff4c8850f3c (diff) | |
Use context variable repeat_pict for frame duration computation and
document this new use.
Patch by Ivan Schreter, schreter gmx net
Originally committed as revision 17492 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/avcodec.h')
| -rw-r--r-- | libavcodec/avcodec.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index b0ec18a49c..f38ad2bdb7 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -3005,6 +3005,18 @@ typedef struct AVCodecParserContext { int64_t next_frame_offset; /* offset of the next frame */ /* video info */ int pict_type; /* XXX: Put it back in AVCodecContext. */ + /** + * This field is used for proper frame duration computation in lavf. + * It signals, how much longer the frame duration of the current frame + * is compared to normal frame duration. + * + * frame_duration = (2 + repeat_pict) / (2*fps) + * + * It is used by codecs like H.264 to display telecined material. + * + * @note This field can also be set to -1 for half-frame duration in case + * of field pictures. + */ int repeat_pict; /* XXX: Put it back in AVCodecContext. */ int64_t pts; /* pts of the current frame */ int64_t dts; /* dts of the current frame */ |