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author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2011-04-23 20:55:34 +0200 |
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committer | Anton Khirnov <anton@khirnov.net> | 2011-09-12 08:48:14 +0200 |
commit | ee42716b07073549cefabec466a33fad39ed5eb6 (patch) | |
tree | 12a3490fbe1e08779895a711a8fec577a3e1a849 /doc | |
parent | af1e247038c6c728b857118405adee0d2f184b40 (diff) | |
download | ffmpeg-streaming-ee42716b07073549cefabec466a33fad39ed5eb6.zip ffmpeg-streaming-ee42716b07073549cefabec466a33fad39ed5eb6.tar.gz |
lavfi: add showinfo filter
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/filters.texi | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index a8076b2b..d8d9062 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1210,6 +1210,65 @@ settb=2*intb settb=AVTB @end example +@section showinfo + +Show a line containing various information for each input video frame. +The input video is not modified. + +The shown line contains a sequence of key/value pairs of the form +@var{key}:@var{value}. + +A description of each shown parameter follows: + +@table @option +@item n +sequential number of the input frame, starting from 0 + +@item pts +Presentation TimeStamp of the input frame, expressed as a number of +time base units. The time base unit depends on the filter input pad. + +@item pts_time +Presentation TimeStamp of the input frame, expressed as a number of +seconds + +@item pos +position of the frame in the input stream, -1 if this information in +unavailable and/or meanigless (for example in case of synthetic video) + +@item fmt +pixel format name + +@item sar +sample aspect ratio of the input frame, expressed in the form +@var{num}/@var{den} + +@item s +size of the input frame, expressed in the form +@var{width}x@var{height} + +@item i +interlaced mode ("P" for "progressive", "T" for top field first, "B" +for bottom field first) + +@item iskey +1 if the frame is a key frame, 0 otherwise + +@item type +picture type of the input frame ("I" for an I-frame, "P" for a +P-frame, "B" for a B-frame, "?" for unknown type). +Check also the documentation of the @code{AVPictureType} enum and of +the @code{av_get_picture_type_char} function defined in +@file{libavutil/avutil.h}. + +@item checksum +Adler-32 checksum of all the planes of the input frame + +@item plane_checksum +Adler-32 checksum of each plane of the input frame, expressed in the form +"[@var{c0} @var{c1} @var{c2} @var{c3}]" +@end table + @section slicify Pass the images of input video on to next video filter as multiple |