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DIVX

PostPosted: Oct 25, 2002 @ 8:20pm
by straightridahuk

PostPosted: Oct 25, 2002 @ 8:32pm
by refractor

PostPosted: Oct 29, 2002 @ 4:50am
by jeffmd
ok, I did the math, with 128 megs, you can encode 142 minutes of video useing 15Kbytes a second. a 128Kbit mp3 is roughly 16Kbytes a second. 128kbits is simply not enough for a divx video and mp3 or ogg audio track.

What I would do... if you really had to do this project, is get my self realplayer ONE for pocket pc, and encode in realmeda format at around 90kbits a second. with mono sound, it should be pretty watchable on the small screen.

PostPosted: Oct 29, 2002 @ 4:31pm
by Mechcommander
I use 7kbps, and my vids turn out fine. I can put a 2 hour movie on a 64MB card :)

PostPosted: Oct 29, 2002 @ 4:46pm
by James S
You Cuhrayzee mofool! 7 Kbps?!?

PostPosted: Oct 29, 2002 @ 4:49pm
by Mechcommander
Mmmhmm. The noir vids look perfect.
I dunno about live action tho... Ill have to record Indian Jones tonight and encode it.

PostPosted: Oct 30, 2002 @ 1:04am
by jeffmd

PostPosted: Oct 30, 2002 @ 1:09am
by sponge

PostPosted: Nov 3, 2002 @ 6:24am
by jeffmdy

PostPosted: Nov 4, 2002 @ 1:40am
by jeffmd
I downloaded a hq mpeg music video to do some more test with, the result far much better with live action then it does with my anime for sure. I would have guessed that because my anime requires less info per frame because of solid colors and some frames not needing update that it would look better at lower bitrates, but its not all that much of an impact as the codec still can't maintain fine lines unless you use a high bitrate.

I found that 75Kbit decimated video is quite watchable for live action, is it me or does ppc have a way of makeing crappy video look better? It allways looks better then when it does on my pc when I test it after encodeing, even when I dont enlarge the video on my PC so its the same size almost as my PPC.

I did 3 test, all 320x200 (the music video was widescreen), and all of them used the same 80Kbit stereo ogg audio track. The music video is not CG laden, but it has very high motion, many scene changes, fades, split screens, and numorouse water sequences with bubbles. the first one was 75kbit decimated by 2, watchable, no frames droped. the 2nd was 150Kbyte, full 25fps (it was a japan music video), it was generaly unwatchable. lost half the frames, and of course because I doubled the framerate with the data rate, the quality per frame did not increase. Live action decimated video seems to be far more tolerable then I find decimated animation video so the 3rd one which was 150Kbit decimated video was the best. I droped 18 frames over a 3 minute 33second period. For me, my choice of music videos is the 3rd one, but for those with smaller storage cards, go for #1.

I dont have realvideo encoder nore do I ever plan on reinstalling it in my life, ditto for the player, so no test there. ;)

PostPosted: Nov 4, 2002 @ 2:09am
by sponge
The screens on the PPC are still not as high quality, so while they may look the same pixel-wise, your just not used to the quality of video on the PPC, I'd guess.

Also, PocketDivx does have some image enchancing options, that could do a bit.

PostPosted: Nov 4, 2002 @ 5:54am
by chien
still belong to nirv sponge :?:

PostPosted: Nov 4, 2002 @ 9:16am
by Mike Bannick
lol by now everyone should know he was a part of it. :P

PostPosted: Nov 4, 2002 @ 1:47pm
by sponge

PostPosted: Nov 4, 2002 @ 4:32pm
by Mechcommander
Well, dont ask me how.. I used the DivX 4.12 codec at 7kbps with 22khz sound, and Noir looks and sounds perfect. All at 14 MB every 30 mins.
Dont ask me how I did it, but I did.