Offset of the current timestamp against last timestamp sync point in
units of AVCodecContext.time_base.
Set to INT_MIN when dts_sync_point unused. Otherwise, it must
contain a valid timestamp offset.
Note that the timestamp of sync point has usually a nonzero
dts_ref_dts_delta, which refers to the previous sync point. Offset of
the next frame after timestamp sync point will be usually 1.
For example, this corresponds to H.264 cpb_removal_delay.
Offset of the current timestamp against last timestamp sync point in units of AVCodecContext.time_base.
Set to INT_MIN when dts_sync_point unused. Otherwise, it must contain a valid timestamp offset.
Note that the timestamp of sync point has usually a nonzero dts_ref_dts_delta, which refers to the previous sync point. Offset of the next frame after timestamp sync point will be usually 1.
For example, this corresponds to H.264 cpb_removal_delay.