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20th January 2009, 02:53 | #1 | Link |
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Join Date: Feb 2007
Posts: 28
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Mencoder CLI settings
Many moons ago, when I first decided to investigate video compression, I spent many (happy?) weeks in this forum investigating Divx/Xvid. I have vague memories of losing my mind playing with complex custom matrices and becoming totally confused.
And in the end, I said "to hell with all that" and settled on a very simple set of parameters for a Mencoder batch file, which I've used ever since for the vast majority of my stuff (conversion of UK MPEG2 TV broadcasts), to my complete satisfaction: Code:
-sws 9 -vf scale=624:352,harddup -ovc xvid -xvidencopts fixed_quant=3 max_bframes=1 packed -oac mp3lame -lameopts vbr=0 br=128 Which leads to my question. Given my ASP settings above, can anyone suggest a few Mencoder parameters which will give me an x264 starting point with vaguely similar quality to the above settings? I suppose my key question is how does the x264 crf setting scale against the fixed_quant Xvid setting? Or is that a silly/controversial question (I've been out of the loop for a while)? |
20th January 2009, 03:46 | #2 | Link | |
Software Developer
Join Date: Jun 2005
Location: Last House on Slunk Street
Posts: 13,248
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Quote:
I'd recommend you do some tests and find the highest possible CRF value, which still looks acceptable for you. A reasonable starting point may be around CRF=22.
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