[Bf-blender-cvs] [b2e067d98cc] master: Fix T68343: Rendered video plays at 600fps

[Richard Antalik]

Commit: b2e067d98ccf43657404b917b13ad5275f1c96e2
Author: Richard Antalik
Date:   Mon Oct 19 07:17:13 2020 +0200
Branches: master
https://developer.blender.org/rBb2e067d98ccf43657404b917b13ad5275f1c96e2

Fix T68343: Rendered video plays at 600fps

Field time_base of video stream must be set for some containers,
otherwise avformat_write_header() will set it to default values.
Rendered file in such case won't be played at desired frame rate.

See init_muxer() in mux.c in ffpmeg sources.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D9213

===================================================================

M	source/blender/blenkernel/intern/writeffmpeg.c

===================================================================

diff --git a/source/blender/blenkernel/intern/writeffmpeg.c b/source/blender/blenkernel/intern/writeffmpeg.c
index 7a8fd2dc43b..e6adad765c3 100644
--- a/source/blender/blenkernel/intern/writeffmpeg.c
+++ b/source/blender/blenkernel/intern/writeffmpeg.c
@@ -603,6 +603,8 @@ static AVStream *alloc_video_stream(FFMpegContext *context,
     c->time_base.num = (int)num;
   }
 
+  st->time_base = c->time_base;
+
   c->gop_size = context->ffmpeg_gop_size;
   c->max_b_frames = context->ffmpeg_max_b_frames;