From ddba05afe4d325bf8e545b8f1777d6010cc25e93 Mon Sep 17 00:00:00 2001 From: Nicolas George Date: Thu, 25 Jun 2020 20:45:53 +0200 Subject: lavfi/vsrc_testsrc: switch to activate. Allow to set the EOF timestamp. Also: doc/filters/testsrc*: specify the rounding of the duration option. The changes in the ref files are right. For filter-fps-down, the graph is testsrc2=r=7:d=3.5,fps=3. 3.5=24.5/7, so the EOF of testsrc2 will have PTS 25/7. 25/7=(10+5/7)/3, so the EOF PTS for fps should be 11/7, and the output should contain a frame at PTS 10. For filter-fps-up, the graph is testsrc2=r=3:d=2,fps=7, for filter-fps-up-round-down and filter-fps-up-round-up it is the same with explicit rounding options. But there is no rounding: testsrc2 produces exactly 6 frames and 2 seconds, fps converts it into exactly 14 frames. The tests should probably be adjusted to restore them to a useful coverage. --- doc/filters.texi | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'doc') diff --git a/doc/filters.texi b/doc/filters.texi index d0ff3d470f..cbb16f22b2 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -22979,6 +22979,10 @@ for the accepted syntax. If not specified, or the expressed duration is negative, the video is supposed to be generated forever. +Since the frame rate is used as time base, all frames including the last one +will have their full duration. If the specified duration is not a multiple +of the frame duration, it will be rounded up. + @item sar Set the sample aspect ratio of the sourced video. -- cgit v1.2.3