[libav-bugs] [Bug 574] Missed frames using x11grab are not handled correctly

bugzilla at libav.org bugzilla at libav.org
Wed Nov 20 04:38:45 CET 2013


--- Comment #1 from Levi <levi.cameron+libav at alliancesoftware.com.au> 2013-11-20 04:38:45 CET ---
This appears not to be a bug but a documentation problem.

Since commit c9cc762, -r before an input stream forces the stream to be
interpreted as a fixed rate stream but will not drop/dup frames to make up that
rate (unlike the behaviour of -r after an input stream).

It would appear that -framerate 25 is now the option to use before the input
stream to achieve this.

Documentation at http://libav.org/avconv.html#x11grab should probably be
updated; for screen capture it is far more likely that a user would want to do
this to keep audio in sync.

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