Commit: c8a7e3a5722378e6e0c44c69e0d647ef06436196 Author: Richard Antalik Date: Tue Mar 2 12:13:21 2021 +0100 Branches: ui-asset-view-template https://developer.blender.org/rBc8a7e3a5722378e6e0c44c69e0d647ef06436196
FFmpeg: Improve scrubbing performance Applying negative offset to seek position before scanning doesnn't have any effect. This change results in 1.5x faster seeking (random frame, average value) in sample file with 30 frame GOP length. If I am not mistaken, B frames can have pts that can be less than pts of I frame that must be decoded. Even in this case though, B frame packet will be stored after that I frame. In addition, preseek value is de facto hardcoded so seeking would fail if it could. This can be hard to spot though. Reviewed By: sergey Differential Revision: https://developer.blender.org/D10529 =================================================================== M source/blender/imbuf/intern/anim_movie.c =================================================================== diff --git a/source/blender/imbuf/intern/anim_movie.c b/source/blender/imbuf/intern/anim_movie.c index 28bf26aa343..d36c7bbe486 100644 --- a/source/blender/imbuf/intern/anim_movie.c +++ b/source/blender/imbuf/intern/anim_movie.c @@ -1149,7 +1149,7 @@ static ImBuf *ffmpeg_fetchibuf(struct anim *anim, int position, IMB_Timecode_Typ } } else { - pos = (int64_t)(position - anim->preseek) * AV_TIME_BASE / frame_rate; + pos = (int64_t)position * AV_TIME_BASE / frame_rate; av_log(anim->pFormatCtx, AV_LOG_DEBUG, _______________________________________________ Bf-blender-cvs mailing list [email protected] https://lists.blender.org/mailman/listinfo/bf-blender-cvs
