720p x264 normal encode times?

[tyronepiggomz]

Last night i encoded an episode of House that i had captured to 720p x264. It took a total of 7 hours to complete. I got about 11fps on 1st pass and 3-4fps on the 2nd pass. this was done on an Intel Core 2 Duo @ 2 Ghz with 512MB of RAM.

The script i used was:

##TS to 720p x264##

LoadPlugin("DGDecode.dll")
LoadPlugin("decomb.dll")
LoadPlugin("UnDot.dll")

mpeg2source("house.d2v")

LanczosResize(1280,720)

SelectEven()
Decimate()
UnDot()


Is it because i only have 512MB of RAM? or is that encoding time normal? or could it be something in my script?

[nurbs]

If you don't post your settings no one can tell.

If you use something like HQ Slow or Slower profiles in megui that speed is about right.

[tyronepiggomz]

i used the guide at this website:

http://nwgat.net/guides.htm

and i used a profile provided in the guide

Nwgat.HighProfile.8rf

[nurbs]

OK. Your encoding time is normal. The settings are really slow.

[morph166955]

my core2 duo 2.0ghz does x264 at ~4-5fps on a one pass w/ crf=20 @ 720p (and most of the usual settings noting too crazy). yours sounds normal. i have 1.5gig ram in mine but x264/mencoder never even approaches that. the only thing where that MAY hinder you is if you have a lot of other programs up using the rest of that ram and starving it. either way with the cost of ram these days I'd recommend buying another 512 or more if you can afford it and fit it in your computer just to be on the safe side...you MAY see a marginal improvement in your encode however I would bet you will see a drastic improvement in overall system performance. I bought my core2 with 512mb ran and ran it for close to 6 weeks before i upgraded with an extra gig and I will say that I did notice a visible speed increase since the system wasnt starved and doing alot of swaping.

I'm in the process of building several different pieces of software (x264/mencoder/xvid) specifically compiled and optimized for the core2 (using gcc 4.3's -march/-mtune=core2 and -mssse3 as well as a few patches for the aforementioned programs). Once i get those done I'll probably make a nice package for everyone and upload it somewhere. It's been a very rough process to get gcc 4.3 to compile and not have issues compiling other programs so gimme some time but I hope I'll get it out soon.

[tyronepiggomz]

^sounds cool!

can you PM me when its done?

[morph166955]

Ill make a post somewhere thats visible to everyone just keep your eyes open for one.

[Adub]

@morph166955
Great! I to have a Core 2 Duo, and am always interested in more speed. I shall keep my eyes peeled.

[morph166955]

yea im hoping it gives me atleast a slight boost in speed. actually ive been looking for a way to benchmark these programs other then just with a basic use of something like gnu-time or something like that to see how long it runs. I figured I'd run a few tests. First im going to build two versions locally...a core2 optimized version and a regular version. I'm also going to make a build on my 3.2ghz HT prescott (running freebsd 6.2) and try to run the programs identically on that computer also. I figured I'd run all 3 programs with different sources...probably a 720p TS and a high-res/high-action dvd and maybe something else. that should give me at least 6 durations that I could compare. I also may do the passes with threads=1 and threads=2 (and i heard 3 and 4 actually run faster then that). that should give a really good comparison of the builds i think.

[Adub]

Sounds great! I look forward towards reading the results thread.