qcomp usage and cqm

[juGGaKNot]

Quantizer curve compression factor. 0.0 => Constant Bitrate, 1.0 => Constant Quantizer. Note that adaptive quantization partially replaces the effect of qcomp and x264 will internally raise qcomp to compensate based on the adaptive quantization strength.

AQ is off by on my encodes.

qcomp 1 :

Bit rate mode : Variable
Bit rate : 3 306 Kbps
Nominal bit rate : 3 400 Kbps
Maximum bit rate : 11.3 Mbps
Writing library : x264 core 67 r1148M 400740b
Encoding settings : cabac=1 / ref=4 / deblock=1:-2:-2 / analyse=0x3:0x113 / me=umh / subme=7 / psy_rd=0.0:0.0 / mixed_ref=1 / me_range=32 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=3400 / ratetol=1.0 / qcomp=1.00 / qpmin=3 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=24000 / vbv_bufsize=24000 / ip_ratio=1.10 / pb_ratio=1.10 / aq=0

qcomp 0.5 ( default ps3/xbox profile setting )

Bit rate mode : Variable
Bit rate : 3 328 Kbps
Nominal bit rate : 3 400 Kbps
Maximum bit rate : 6 818 Kbps
Writing library : x264 core 67 r1148M 400740b
Encoding settings : cabac=1 / ref=4 / deblock=1:-3:-3 / analyse=0x3:0x113 / me=umh / subme=7 / psy_rd=0.0:0.0 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=3400 / ratetol=1.0 / qcomp=0.50 / qpmin=3 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=24000 / vbv_bufsize=24000 / ip_ratio=1.10 / pb_ratio=1.10 / aq=0

Will qcomp 1 hurt quality ? I see it uses more bitrate where needed ( 11.3 mb peek and not 6.8 as 0.5 ) but will it also use less where more would be used at 0.5 ?

2 : cqm files, where can i get more info on it.

For 2 and 3 i will use the "search" now.

THNX, cheers.


LE :

It just means --fpel-cmp satd + --me esa, aka Transformed Exhaustive Search. Aku and I decided it would be better as a new ME mode, as all the other ME modes are not worthwhile with --fpel-cmp satd.

2 : fpel-cmp : what does it do ? there is no readme @ WIKI (http://mewiki.project357.com/wiki/X264_Settings#direct)

2 is out, found it, edited.

[Dark Shikari]

1. Stop reading outdated info. AQ has nothing to do with qcomp.

2. Don't mess with qcomp unless you have a good reason.

[juGGaKNot]

1. Stop reading outdated info. AQ has nothing to do with qcomp.

2. Don't mess with qcomp unless you have a good reason.

Well that is why i'm asking for updated information, i moved on to 1148 ( thnx for you help in the other thread btw ) and i'm looking at the wiki and it says what it says, i just specified i do not use AQ, since i do not use it, it does not matter right ?

I want to use qcomp 1 and merange 32 that is why i'm asking

Source has fast motion 90% of the time.