On 11/18/14, Dan Dennedy <d...@dennedy.org> wrote: > On Tue, Nov 18, 2014 at 11:13 AM, Zenny <garbytr...@gmail.com> wrote: > >> Hi again: >> >> Trying to help some friends to create composite video. But when I try >> to render using a single processor, the rendering is fine, but when >> tried with multiple processors, it produces jitters as seen on the >> attachments (20s of videos respectively for comparison). >> >> Some filter (Effect in Kdenlive) is having a problem with >> multi-threading, > but I do not know which one. Maybe it is something related to the chroma > key. I need you to help identify the problematic filter by disabling them > one-at-a-time and making a test render.
I shall try to render as you stated so as to figure out the bug. > Then, I can make a change that > prevents multi-threaded access to the problematic routine. Also, let me > know which transition you are using. FYI, I am using: Transitions: Composite Effects: Crop, Scale and Position; White Balance; Denoiser; Blue Screen; Alpha Operations; and Key Spill Mopup > I doubt it is the transition; so, I > would try first disabling effects and not removing the transition. You may > not get the desired visual result with an effect disabled, but hopefully we > still observe if the problem remains or goes away. Shall try once again by disabling effects. > > >> The script for single CPU is: >> >> #! /bin/sh >> >> SOURCE="/home/zenny/kdenlive/scripts/olle_20141115_001.sh.mlt" >> TARGET="/home/zenny/kdenlive/olle_1render.mp4" >> RENDERER="/usr/bin/kdenlive_render" >> MELT="/usr/bin/melt" >> PARAMETERS="-pid:2402 $MELT atsc_1080p_30 avformat - $SOURCE $TARGET >> properties=x264-medium g=120 crf=20 ab=160k progressive=1 threads=4 >> real_time=-1" >> $RENDERER $PARAMETERS >> >> The script for multithreaded processing is: >> >> #! /bin/sh >> >> SOURCE="/home/zenny/kdenlive/scripts/olle_20141115_001.sh.mlt" >> TARGET="/home/zenny/kdenlive/olle_1render.mp4" >> RENDERER="/usr/bin/kdenlive_render" >> MELT="/usr/bin/melt" >> PARAMETERS="-pid:2402 $MELT atsc_1080p_30 avformat - $SOURCE $TARGET >> properties=x264-medium g=120 crf=20 ab=160k progressive=1 threads=4 >> real_time=-4" >> $RENDERER $PARAMETERS >> >> This situation is reproduced in three occasions with different videos. >> Any >> help? >> >> Thanks! >> >> /z >> >> >> > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
