ffvfw versus xvid_QPEL test....
Reply #19 – 2004-01-03 02:29:30
well,yes i can live with such explanations also! i only know that xvid doesn't like my caps...i never did dvd-rip.... so it seems to me some consensus was agreed upon:ffvfw and divx3 take noise better than xvid....... (i believe we all agreed on that one(?)) and therefore we could call xvid an dvd-rippers codec... so if it's ok with bonzi i might as well skip the moto test,as we reached an agreement....(i just did a quick moto test,and yes,xvid didn't liked it particularly....) [and if i see problems with xvid dvd-rips(that other people did),i'll let you know..hehe] tommy,any wavelet style codec acts as blur filter(vp6,rv9,rududu) so noisy stuff gets to be denoised...but this destroys the details also,so i wouldn't agree that this is what we need for noisy stuff.....(i may as well use spatial filtering+mpeg4 to achieve simillar results...huh) continuum;I would suggest that you use a denoiser for your next test (BTW, what Peachsmoother settings are you using?), so the codecs are tested under more "normal" (as you would use them "everyday") conditions. some stuff i filter,and some stuff i don't....(it's not like i gave xvid something harder than i give to nandub every day)... i use peachsmoother in a way to first assess the noise ;#peachsmoother(readout = true, dot = true) #noise estimation then when peach spittsout setting (it needs still frames tot asses the noise;bare in mind that!) ;#noisy novatv #peachsmoother(noiselevel=7.876,baseline=6.101,NoiseReduction = 60, Stability = 30, Spatial = 100) #poor vhs 3rd rock #peachsmoother(noiselevel=4.138,baseline=2.761,NoiseReduction = 60, Stability = 30, Spatial = 100) #vhs ep+blends #peachsmoother(noiselevel=4.201,baseline=2.813,NoiseReduction = 60, Stability = 30, Spatial = 100) #vhs ep big one #peachsmoother(noiselevel=4.286,baseline=3.141,NoiseReduction = 60, Stability = 30, Spatial = 100) etc.(here peach was applied after the resizer...) this is manual way of doing it,but you can also use automatic way if you wish like this;#peachsmoother(noisereduction = 75, stability = 20, spatial = 85) noise estimation is internal/automatic,but denoising tresholds are applied...I think there was a clear difference in your arte-screenshots (linked in another thread) between Xvid and ffvfw, I would like to see a clip more like that, i.e. that shows the same deficiency. well we all seem to agree that xvid is worse on analog noisy stuff,so no wonder ffvfw beats it there...if you're doing capturing,you can produce many such clips...(i'm not putting you off,but usually once i find a better codec for a particular pirpose,i stick to it) also big thanks goes to bonzi,and needless to say i agree with all his remarks in his last post! RESPECT! if anyone needs anything else,let me know....(i still didn't tried that standalone ff encoder i got ) /ivo