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lavf/concat: document the use of the files durations.

Address trac ticket #2319.
This commit is contained in:
Nicolas George 2013-03-05 17:14:27 +01:00
parent 188c082477
commit 87a954d6f4

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@ -44,6 +44,12 @@ length.
All files must have the same streams (same codecs, same time base, etc.).
The duration of each file is used to adjust the timestamps of the next file:
if the duration is incorrect (because it was computed using the bit-rate or
because the file is truncated, for example), it can cause artifacts. The
@code{duration} directive can be used to override the duration stored in
each file.
@subsection Syntax
The script is a text file in extended-ASCII, with one directive per line.