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| author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2010-10-11 23:27:33 +0000 |
|---|---|---|
| committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2010-10-11 23:27:33 +0000 |
| commit | 16134b7c4041406e288c652596acbc872367fae1 (patch) | |
| tree | b4feeeb0c617aec128d8ad5f6ddf74b3546d2cde /doc | |
| parent | 214c0d420b696318329aa7da0aeb439970e5bb79 (diff) | |
| download | ffmpeg-16134b7c4041406e288c652596acbc872367fae1.tar.gz | |
Extend the nullsrc source, make it accept a parameter for specifying
the timebase. Useful for debugging timebase configuration issues.
Originally committed as revision 25446 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 3fadd9a1d2..e85e9effec 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -653,11 +653,15 @@ Null video source, never return images. It is mainly useful as a template and to be employed in analysis / debugging tools. It accepts as optional parameter a string of the form -@var{width}:@var{height}, where @var{width} and @var{height} specify the size of -the configured source. +@var{width}:@var{height}:@var{timebase}. -The default values of @var{width} and @var{height} are respectively 352 -and 288 (corresponding to the CIF size format). +@var{width} and @var{height} specify the size of the configured +source. The default values of @var{width} and @var{height} are +respectively 352 and 288 (corresponding to the CIF size format). + +@var{timebase} specifies an arithmetic expression representing a +timebase. The expression can contain the constants "PI", "E", "PHI", +"AVTB" (the default timebase), and defaults to the value "AVTB". @c man end VIDEO SOURCES |