Re: [Mlt-devel] [PATCH mlt] Clear audio and video context to NULL
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From: Mikko R. <mik...@ik...> - 2011-10-09 22:04:01
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On Sat, Oct 08, 2011 at 01:27:45PM -0700, Dan Dennedy wrote: > On Sat, Oct 8, 2011 at 12:39 PM, Mikko Rapeli <mik...@ik...> wrote: > > Another crash around the same area. Would you by chance have an idea of a fix? > > Can you determine if Kdenlive is trying to actively use 10 or more > instances of avformat producer? This is not supported unless it has I guess full trace with all threads would show this, sorry for not capturing it. I will try to hit this again to see what's going on. > increased the size of the producer_avformat cache. What did you do > just before this crash? Setting in and out points for clips using procies. Original clips are on an external USB disk which is sometimes a bit slow when disk caches are empty. > Kdenlive has had some problems before with thumbnailing and importing > a large number of clips because it was creating a thread for each > clip, which was unstable usage of MLT not to mention bad usage of > system resources. Now it uses QtConcurrent, which defaults number of > threads to the number of virtual cores, which I still feel is > dangerous and not system friendly. I really do not want all of my CPUs > used by background threads leaving none for the UI. And I do not > really want my hard drive thrashed reading 8 or more large video files > simultaneously. Furthermore, there is no check to see if cpu count > exceeds 10. How many do you have? Just 2 cpu's. -Mikko |