[FFmpeg-trac] #4119(undetermined:closed): glitchy reading of lagarith 1.3.27 streams
FFmpeg
trac at avcodec.org
Tue Nov 18 23:25:26 CET 2014
#4119: glitchy reading of lagarith 1.3.27 streams
-------------------------------------+-------------------------------------
Reporter: cracki | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: git-master | undetermined
Keywords: lagarith | Resolution: duplicate
fps | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* keywords: lagarith => lagarith fps
* status: new => closed
* version: unspecified => git-master
* resolution: => duplicate
Comment:
Your input video has three frames, all three are decoded correctly, you
can test for example with:
{{{
$ ffmpeg -vsync 0 -i lagarith-1.3.27-black-frames-and-off-by-ones.avi
out%1d.png
}}}
FFmpeg does not work very well for first / last frames of vfr video, this
is covered by several other tickets, among them #1578, (more similar to
this problem) #2674 and #3052. You can basically choose if you want to
have a "short" first frame with {{{-r 25}}} or a "short" last frame with
{{{-vf fps=25}}}.
A patch for fps exists:
http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/180754/focus=180758
It probably fixes your issue but was not accepted yet.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4119#comment:4>
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