[libav-bugs] [Bug 79] New: avplay framedrop logic is bogus
bugzilla-daemon at aruru.libav.org
bugzilla-daemon at aruru.libav.org
Tue Nov 22 12:56:09 CET 2011
http://bugzilla.libav.org/show_bug.cgi?id=79
Summary: avplay framedrop logic is bogus
Product: Libav
Version: git HEAD
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: Normal
Component: utilities
AssignedTo: bugzilla at libav.org
ReportedBy: lu_zero at gentoo.org
The framedrop logic ends up dropping most frames from v4l2 and other sparse
containers.
The delay calculation between two packets is used instead the frame duration.
avplay drops frames after frames with larger gaps:
1 -> pts 0 duration 1 -> delay 0 -> keep
2 -> pts 10 duration 1 -> delay 10 -> keep
3 -> pts 11 duration 1 -> drop
4 -> pts 12 duration 1 -> drop
...
In addition the delay information isn't updated properly so the problem after
that seems self perpetuating.
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