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21st September 2003, 19:02 | #1 | Link | |
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Join Date: Sep 2003
Posts: 5
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Sanity check - DivX 5.1 - 3 pass settings
from the Divx support site
http://support.divx.com/cgi-bin/divx...Z2U9MQ**&p_li= Quote:
1st pass: Mode: Standard Psycho Vis: Off Log File: write MV: Off 2nd pass: Mode: Standard Psycho Vis: On Log File: write & read MV: Off 3rd pass: Mode: Slow/Slowest Psycho Vis: On Log File: read MV: Off Seeing as how MV should be off in the second to last pass, I disable it for all passes... I can only see it being used in a 4 pass situation for the 2nd pass. btw, I've been lurking on the board for a long time. I hope to be contributing what I can back to the encoding community. munky |
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21st September 2003, 22:25 | #2 | Link |
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Join Date: Nov 2001
Posts: 210
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"(e.g. if you're doing 4 passes, turn on PV and turn off MV in pass 3)."
I don't understand how this is possible. Anyway, wouldn't it be wiser to do something like that? 1st pass: Mode: Standard Psycho Vis: Off Log File: write MV: ON nth -1 pass: (be it the second pass or the nth -1 pass) Mode: Standard Psycho Vis: Off Log File: write & read MV: ON last pass: (e.g the nth pass) Mode: Slow/Slowest Psycho Vis: On Log File: read MV: Off |
22nd September 2003, 06:20 | #4 | Link |
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Join Date: Sep 2002
Posts: 53
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@Bira,
You can't have PV off for the N-1 pass.... PV changes the compressibility of the movie. I would just keep PV on for all passes (therefore, keeping the compressibility constant, and not making sudden changes on the RC algorithm). I use.... 1st pass - PV ON, WRITE MV, STANDARD Between 1 and N passes - PV ON, WRITE&READ MV, STANDARD (use the MV speed increase here). Last pass - PV ON, NO MV, SLOWEST (can't re-use MV when changing the quality setting). If you wished, you could DISABLE PV for all but the last TWO passes (ie. N-1 pass much have it on along with the last). However, I would assume that distributing bits with PV OFF, and then suddenly having PV ON would screw things up. Probably best to keep things as consistent as possible. -Sumster |
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