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Bug 665502 - [flvdemux] broken a/v sync for some files
[flvdemux] broken a/v sync for some files
Status: RESOLVED FIXED
Product: GStreamer
Classification: Platform
Component: gst-plugins-good
git master
Other Linux
: Normal blocker
: 0.10.31
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2011-12-03 16:29 UTC by Zaheer Abbas Merali
Modified: 2011-12-03 17:37 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Zaheer Abbas Merali 2011-12-03 16:29:16 UTC 
Looks like the combination of 21d3faa40070b2ddc10a1c572bd4d4a7dd28af39 and cf3f3f14da6561223bf9f5d6bf1ff230526d40eb has broken a/v sync for certain flv files.

http://zaheer.merali.org/disk-flv-elc.20111202-205426.flv is an example file. I have many if any others are needed, please let me know.

If I revert those 2 commits on my local git of gst-plugins-good, all is fine a/v sync wise.
Comment 1 Vincent Penquerc'h 2011-12-03 16:57:56 UTC 
That file's video part appears to be a static image, also with that discont detection disabled... Did you mean to link to a different one ?
Comment 2 Zaheer Abbas Merali 2011-12-03 17:01:21 UTC 
Go 4 minutes 30 or so in and watch for about a minute.
Comment 3 Vincent Penquerc'h 2011-12-03 17:36:10 UTC 
commit 7a7db8cbaf751bfcb1a94b214cbad3855e4f683a
Author: Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
Date:   Sat Dec 3 17:30:10 2011 +0000

    flvdemux: fix discontinuity threshold check when timestamps go backwards
    
    Since unsigned types are used, a negative value would show as very, very
    positive.
    Fixes A/V sync on some... less than well made files where timestamps go
    backwards.