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Old 4th March 2015, 20:24   #1  |  Link
albesp77
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x264 Quantizer Debug

Hi to all, i want to know if is possible to know frame-by-frame quantizer value after x264 encoding, because i want to manual see the worst compressed frame, to evaluate with my eyes how worst really is, is possible ?
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Old 4th March 2015, 20:46   #2  |  Link
poisondeathray
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Did you mean average mb quantizer per frame ?

One way to visualize this this is ffdshow's osd. You can enable "frame mean quantizer". It's possible to print out a csv that you can search in a spreadsheet or text editor. You can also visualize individual mb quantizers with the visualiztion option
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Old 4th March 2015, 21:08   #3  |  Link
raffriff42
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ffplay-generated CSV data files (see "xxxx-ffplay-debug.txt, column "qp")
http://forum.doom9.org/showthread.ph...64#post1693064

ffdshow-generated file, plus on screen display:
http://forum.doom9.org/showthread.ph...52#post1693552

Last edited by raffriff42; 4th March 2015 at 21:10.
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Old 5th March 2015, 07:14   #4  |  Link
albesp77
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Thanks for answers, good to know!
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