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<blockquote data-quote="Owlsroost" data-source="post: 850235" data-attributes="member: 83973">Did some more experiments etc......&nbsp;LAV video YADIF is single threaded.&nbsp;According to this - <a href="http://ffdshow-tryout.sourceforge.net/wiki/faq:multithreading" target="_blank">http://ffdshow-tryout.sourceforge.net/wiki/faq:multithreading</a> - FFDShow YADIF is multi-threaded.&nbsp;You need to give FFDShow enough threads to play with (“Decoder options” → “Number of decoding threads”) e.g. 8 threads, and enable “Queue &amp; misc” → “Queue output samples”, then it seems to load balance across the CPU cores quite well.&nbsp;Tried it with FFDShow r4371, RGB out, YADIF with frame doubling enabled and a 1440 x 1080i @ 50Hz recording (a football match, so plenty of movement) - it plays back smoothly on my i5-460M (dual-core with HT, so 4 pseudo cores) although it peaks at 70-80% CPU usage occasionally. Same recording using LAV video is hopeless - lots of jerkiness/freezing.&nbsp;Tony</blockquote>

[QUOTE="Owlsroost, post: 850235, member: 83973"] Did some more experiments etc...... LAV video YADIF is single threaded. According to this - [url]http://ffdshow-tryout.sourceforge.net/wiki/faq:multithreading[/url] - [B]FFDShow YADIF[/B] is[B] multi-threaded[/B]. [FONT=arial]You need to give FFDShow enough threads to play with (“Decoder options” → “Number of decoding threads”) e.g. 8 threads, and enable “Queue & misc” → “Queue output samples”, then it seems to load balance across the CPU cores quite well.[/FONT] [FONT=arial]Tried it with FFDShow r4371, RGB out, YADIF with frame doubling enabled and a 1440 x 1080i @ 50Hz recording (a football match, so plenty of movement) - it plays back smoothly on my i5-460M (dual-core with HT, so 4 pseudo cores) although it peaks at 70-80% CPU usage occasionally. Same recording using LAV video is hopeless - lots of jerkiness/freezing.[/FONT] [FONT=arial]Tony[/FONT] [/QUOTE]

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