Divx Encoding with AMD Opterons

[sircharles32]

I'm curious, there has to be several of you encoders out there that use Opteron setups in either single or dual CPU systems. I'm trying to gather some info on dual pass encoding times with divx. If you have an opteron setup, could you please reply to this thread with the following info:

Opteron Speed
# of cpus in system
amount of Ram in system
also whether the ram is DDR 333 or 400
Your motherboard/chipset

and finally, how long it usually takes you to do a dual pass divx encode. Now I know that running filters (such as those used for deinterlacing) adds time to your encoding, so please list the filters that you used when getting your times.

If you want you can also supply the version of divx you used and your OS, but I'm really interested in the hardware info listed above and your times.

Thank You.

[Joe Fenton]

Don't want much, do you? :D

I haven't encoded with DivX in a LONG time... not since XviD 0.9 came out. With XviD 1.x out, there's even less reason to use DivX. :cool:

System:
One Opteron 240 at 1.4GHz (I plan on getting a second in Feb)
1 GByte DDR333 memory
MSI Master2-FAR K8T800 motherboard

When doing dual-pass XviD, I usually do a Lanczos resize with the appropriate clipping. Encoding at 640x480 for 4:3 material at about 1kbps usually goes about 37FPS on first pass and about 24FPS on the second. That was in 32-bit Linux using dvd::rip with xvid 1.0.1 with all features set for high-quality. I haven't done an encode since upgrading to 64-bit Linux yet. I'm hoping to get a bit more out of it.

DivX tends to be slower than XviD as shown in the recent codec shootout. You can kinda guess the rates from that and what I got for XviD.

[nFury8]

I'm using this setup as my main workstation in the office:

2-248 Opterons (2.2Ghz)
TYAN Tiger S2875ANRF Mobo
4Gb Corsair PC3200 Reg ECC RAM

I can test it but we need to have an encoding setting to follow. Just give us the encoding parameters/setup so that its easier for anyone with Opterons to follow.

[sircharles32]

Thank you so far.

Alright some people would like a little more info to go on. First let me give my setup so you get an idea of what I'm working with, and maybe see where I'm going.

Hardware:
AMD Athlon XP 2500+ @ 2.2 GHz/400 MHz FSB
1024 MB DDR 400 @ 2-3-2-6-2
Asus A7V880 (KT880 chipset)
encoding HD: WD1200JD

Software:
OS: Windows 2000 w/SP4
Encoding front end: Gordian Knot 0.28.7
Codec: Divx 5.1.1 Pro

Here are the basic parameters if you want to follow.
If 4:3

Video size = 480*352
Audio = 128 kbits/s average bit rate
bits/(pixel*frame) = 0.360
Resize filter = Neutral Bicubic
if interlaced, I usually use "field deinterlace". If you don't want to use that filter and use another, that's fine, just let me know.

If 16:9 (or some wide screen aspect ratio)

Video size = 512*208 (or something close to that)
Audio = same as above
bits/(pixel*frame) = same as above
same resize filter
same interlaced procedure

Codec settings:
standard quality for both passes (dual pass)
bitrate should be carried over from calculation in gordian knot

That should be just about it.

I'm primarily interested in 32 bit encoding, but if you have 64 bit values, that would be great also.

Again, thank you.

[nFury8]

Can we agree on 'The Matrix (Part 1)' as source video? I got R1(NTSC) DVD of the movie. I haven't used DivX for a very long time, so what's the target file size or bitrate?

[sircharles32]

Yes the Matrix is fine. You can try a bit rate of 1200 kb/s for video and 128 kb/s average bit rate for audio. Target video size is unimportant.