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Message #02534
[Bug 592506] Re: Very Choppy Preview of H.264
There has been a recent change in the MLT library which makes AVCHD
files a lot more usable - you need to have > v0.9.1 of the ffmpeg
libraries (not libav) and v0.7.9 of MLT.
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https://bugs.launchpad.net/bugs/592506
Title:
Very Choppy Preview of H.264
Status in KDE Non-Linear Video Editor:
New
Status in OpenShot Video Editor:
Incomplete
Bug description:
When previewing AVCHD (AVCHD is encoded in H.264) the video is
extremely choppy, as well as the audio. Even playback of the media
files in VLC Player is choppy. Doing a quick google search I found
this. http://www.blog.arun-prabha.com/2010/03/02/how-to-play-m2ts-
files-smoothly-using-vlc/ If "Skip the loop filter for H.264 decoding"
is changed in VLC Player to BiDir it can play back smoothly. It
decreases the video quality a little bit but plays smoothly. (And
since this would be used for the preview, quality does not matter as
much.) I think something like this might be available in OpenShot.
(Does Openshot use the same H.264 libraries as VLC Player?) Anyway the
preview is so choppy it is not is suitable for editing. The ACVHD
clips were recoded at 17mbps. There are no effects or transitions on
the clips.
Ubuntu 10.04
Software Center
1.1.3
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