DivX Pro 5.1.1 Beta 2 is now available

[Snippit]

On the other hand, using DivX 5.0.2 Pro for the same material lands me at around 3,5 to 4 hours for a 2-pass, 2CD encode using slowest, GMC on, BiDi on, QPel off and PSY off. Muxing of audio included. I definately don't think anything is wrong with my rig because it performs well in other instances.

I'm just wondering a little about what settings NOT to use, because so far I've either got shitty results with DivX5.1 or ridiculously long enc. times. The different options must be way different between DivX5.0 and DivX5.1.

Currently running a new 2-pass encoding session on slow-slow, GMC on, BiDi off, PSY off, QPel off, resize filter sharp bicubic, 1450 kbps, 25 FPS PAL, res. 704 x 304 for a movie 2 hours in length. First pass rendering rate @ about 8 fps.

Maybe I'm just a complete n00b, and that explains almost everything. ;)

[Angelus]

Well the reason you are getting 3.5 to 4 hours with Divx 5.0.2 and a lot longer with DivX 5.1.1 is b/c slow on the DivX 5.0.2 = standard on DivX 5.1.1. So that may have something to do with your confusion. By the way, was it 3.5 hours for the whole encode? Or for each pass? Because that's a big difference in time then...

[Snippit]

Originally posted by Angelus ...on the DivX 5.0.2 = standard on DivX 5.1.1.

Ah, well, that would probably explain part of it.

The time stated is for the entire session, that is AC3 --> MP3 + two passes + audio muxing.

Oh well terminated the previous session and started a new now using standard-slow, BiDi on, GMC on, QPel and PSY off. Lot's of sessions now really. :D

edit Well, completed in just over 9 hours but the result was not impressive to say the least. Blocky. Will do more experiments.

Anybody who actually got good results, please post your settings and I'll try them as well. :)

[Maggoty]

Howdy,
I'm also getting the slower encodes with 5.1.1b2 on the slowest mode setting. Around 8 hour or so for each pass, which is heaps heaps longer than the 5.02 codec. On my P4 2.4gig I used to get around 3 or so hours all up for 2 passes on the 5.02 codec.
I did a 1 cd encode of Xmen 2 with the 5.1.1b2 codec and I must say with an average bit rate of around 680kb the movie turned out pretty bloody good. For the length of the movie it came out pretty crisp.
Although the slow encoding times are a bit sucky, the final output is rather nifty and rewarding.
I'm viewing all my movies thru xbox media player on my tv though, never on my monitor, so the tv's low resoultion may improve things a bit though.
If they made the slowest mode as fast as the 5.02 codec's slowest mode, then that would totally be awesome.

Maggoty

[SeeMoreDigital]

Originally posted by Maggoty
... I'm also getting the slower encodes with 5.1.1b2 on the slowest mode setting. Around 8 hour or so for each pass, which is heaps heaps longer than the 5.02 codec... I think everyone is forgetting that when you use the slow & slowest modes with DivX 5.1.x (including the beta's) they do not equate to the same modes when using DivX 5.0.2!

As far as I am aware this fact has been well documented in DivX's website guides and notes!!

With DivX 5.0.2, when you move the slider fully to the right. It equals (or should now infact be slower than) DivX 5.1.x in standard mode.....

Cheers

[Soulhunter]

Hi, Its Sunday again.... ;)


Source:

The Matrix - Lobby Shootout / 3:07 min. @ 25fps / 720x400 pix. (Lancoz)


How much is the compression gain with B-Frames and how much do they reduce quality ???

Results:

QB @ Quantizer 2 / Standard / BiDi / No PVE
File size: 62.810.112 Bytes / Avg. PSNR: 46.90

QB @ Quantizer 2 / Standard / No BiDi / No PVE
File size: 75.253.760 Bytes / Avg. PSNR: 47.22

QB @ Quantizer 2 / Slowest / BiDi / No PVE
File size: 67.260.416 Bytes / Avg. PSNR: 47.05

QB @ Quantizer 2 / Slowest / No BiDi / No PVE
File size: 79.749.120 Bytes / Avg. PSNR: 47.34


How do the different speed settings affect multipass encodes... ???

Results:

MultiPass @ 2000 kbps / 1st Standard / 2nd Standard / BiDi / No PVE
File size: 46.954.496 Bytes / Avg. PSNR: 46.39

MultiPass @ 2000 kbps / 1st Standard / 2nd Slowest / BiDi / No PVE
File size: 46.968.832 Bytes / Avg. PSNR: 46.45

MultiPass @ 2000 kbps / 1st Slowest / 2nd Slowest / BiDi / No PVE
File size: 46.954.496 Bytes / Avg. PSNR: 46.47


Bye

[Torian]

A rather late update but I didn't have time before the sunday, still a little off-topic ;)

@Soulhunter: My apologies for not reading thoroughfully, I must have read what I was expecting.

@SeeMoreDigital:
"Can you confirm whether your are generating 1pass or 2passes encodes when using BiDi + PSY?"
2 pass for storage.

"But I've not seen any difference using BiDi when geneating 2pass encodes above 2000kbps"
To confirm my experience from 5.1 with beta2 I encoded the Black Hawk Down trailer @ 3500 kbps (768x432, comptest w/ q2 66%) 4 times testing Bi and Psy effects.
BiDi+Psy is slightly more detailed than Psy alone, no image degradiation visible. It probably still saves some bitrate.

The two versions w/o Psy are not able to reproduce the original version's texture and blurr fine details. Yet Psy exaggerates the texture a bit but at a higher bitrate (4500 *g*, keep in mind that it's a trailer) is nearly no difference to the original visible exept for stills of high motion scenes.
Another test w/o Psy at this bitrate didn't bring it much closer to the original, even @6000kbps it looks inferior.

I don't use PSNR because I care more about visible differences than the ones a computer can spot.

[DigitAl56K]

DivX 5.1.1 has been officially released, please see:
http://forum.doom9.org/showthread.php?s=&threadid=65334

[jggimi]

Since that is the case, I am un-Sticky-ing this Beta thread from the forum.