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Document pts/dts.

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Originally committed as revision 13265 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-05-23 17:56:45 +00:00
parent b18a4ab2ae
commit f6e76ba476
1 changed files with 17 additions and 2 deletions
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19
libavformat/avformat.h
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@ -44,8 +44,23 @@
/* packet functions */
typedef struct AVPacket {
int64_t pts; ///< presentation time stamp in time_base units
int64_t dts; ///< decompression time stamp in time_base units
/**
* Presentation time stamp in time_base units.
* This is the time at which the decompressed packet will be presented
* to the user.
* Can be AV_NOPTS_VALUE if it is not stored in the file.
* pts MUST be larger or equal to dts as presentation can not happen before
* decompression, unless one wants to view hex dumps. Some formats misuse
* the terms dts and pts/cts to mean something different, these timestamps
* must be converted to true pts/dts before they are stored in AVPacket.
*/
int64_t pts;
/**
* Decompression time stamp in time_base units.
* This is the time at which the packet is decompressed.
* Can be AV_NOPTS_VALUE if it is not stored in the file.
*/
int64_t dts;
uint8_t *data;
int size;
int stream_index;