Advanced IDR frame placement

kolak · 9th October 2015, 21:12

Have very specific IDR frame placement requirement for x264.

I want IDR frames to have min distance of 24 frames (and maximum of 99), but I don't want scene change detection to be off. In case there are scene changes happening inside 24 frames period I want 2nd one to be skipped. Is this possible at all with x264/ffmpeg?
Is the only way to let x264 create 1st pass and than analyse it and overwrite "broken" places with I frames?
Can I copy x264 frame decision from 1st pass and than adjust it (change "bad" IDR frames to I) and start new encode with this as qpfile?
Will this be ok? Is there a faster way?

9th October 2015, 21:12	#1 \| Link
kolak Registered User Join Date: Nov 2004 Location: Poland Posts: 2,843	Advanced IDR frame placement Have very specific IDR frame placement requirement for x264. I want IDR frames to have min distance of 24 frames (and maximum of 99), but I don't want scene change detection to be off. In case there are scene changes happening inside 24 frames period I want 2nd one to be skipped. Is this possible at all with x264/ffmpeg? Is the only way to let x264 create 1st pass and than analyse it and overwrite "broken" places with I frames? Can I copy x264 frame decision from 1st pass and than adjust it (change "bad" IDR frames to I) and start new encode with this as qpfile? Will this be ok? Is there a faster way? Last edited by kolak; 9th October 2015 at 23:17.

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