https://bugs.kde.org/show_bug.cgi?id=352489

Eric Fontaine <ericrfonta...@hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |ericrfonta...@hotmail.com

--- Comment #16 from Eric Fontaine <ericrfonta...@hotmail.com> ---
I'm noting this happens on my machine too (arch linux kdenlive 18.04.1 mlt
6.8.0 on intel i7-6500U), and the workaround of reducing MLT thread count to 1
works.

I'm also noting that I can't step through individual frames with right or left
keyboard buttons when I have >1 thread, but I can with only 1 thread.  I
suspect this is related to this issue.

I'm also noting that on demanding multi-track videos, that with >1 thread I
notice that pressing spacebar to initiate playback will result in playback
playing like half a second and then restarting playback a few times (similar to
how a CD player would loop when stuck on a bad disc).  However on the same
video with only 1 thread, the playback won't experience that multiple false
start looping problem, but will instead simply take a little bit longer to get
rolling.  I'm thinking while this might be related to the issue of the playhead
not working properly...(maybe the multiple threads send conflicting information
about the progress of processing of the start frame, which confuses the
playhead cursor).  I can't find this issue in the issue tracker...so I'm
mentioning it here cause I think might be the same underlying issue.

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