diff options
| author | Nicolas George <george@nsup.org> | 2020-06-25 20:45:53 +0200 |
|---|---|---|
| committer | Nicolas George <george@nsup.org> | 2020-09-08 14:39:43 +0200 |
| commit | ddba05afe4d325bf8e545b8f1777d6010cc25e93 (patch) | |
| tree | 08d5854de52ecb9be08ff7143f49391316db6dd9 /doc | |
| parent | e6d625d008df9392dc34cf5493c21768d002f827 (diff) | |
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.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 4 |
1 files changed, 4 insertions, 0 deletions
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. |