General > Leeching & Technical Problems
Why h264?
Tofusensei:
Maybe I'm spoiled by my 3.2 Ghz P4 :X
-Tofu
Hirvine:
Oh I just found out something very awfull if you install h.264 codec.
So I want to warn people about it.
When you select NORMALIZE (standaard checked) in the install it will normalize your sound 500% (5 times louder) giving a heck noisy sound, change it back to 100% and all is good again.
I don't know why it's standaard on 500%, but it really sound like hell if you just install and play movies with it without setting normalize back to 100%.
So you have been warned,
dr_ishmael:
--- Quote from: Tofusensei on September 11, 2005, 04:08:12 pm ---Anyway, all I am saying is, the idea of h.264 using an insane amount of CPU to render is a myth. It uses no more CPU than xvid :X
--- End quote ---
Hm, that's odd, because I got similar results to ladoga's. I have an Athlon 64 3000+, and I tracked CPU usage in Task Manager while playing the intro of Tsubasa Chronicle 01 in both xvid (left) and h.264 (right) formats. Noise (CPU usage when idle) is between 0-2%.
As you can see, h.264 used about 10% more CPU on average than xvid. Now, the 3000+ only runs at ~1.8 GHz, so that would be a difference of ~180 MHz, with actual usage of around 900 MHz for h.264 playback.
I still agree with Tofusensei that h.264 doesn't take an *insane* amount of CPU, but based on my results, it does indeed take more than xvid.
Tofusensei:
h.264 DVD version is encoded at a higher resolution than the xvid one.
h.264 = 768 x 432 = 331776 pixels
xvid = 704 x 360 = 253440 pixels
332776/253440 =1.3130366
so, the h.264 has 31.3% more pixels to decode than the xvid. So according to my math, the h.264 actually uses less CPU to decode. Interesting, huh? :D
-Tofu
Hirvine:
--- Quote from: Tofusensei on September 13, 2005, 06:21:47 am ---h.264 DVD version is encoded at a higher resolution than the xvid one.
h.264 = 768 x 432 = 331776 pixels
xvid = 704 x 360 = 253440 pixels
332776/253440 =1.3130366
so, the h.264 has 31.3% more pixels to decode than the xvid. So according to my math, the h.264 actually uses less CPU to decode. Interesting, huh? :D
-Tofu
--- End quote ---
Sheesh you got me there. I will remember that little math!
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