How to capture screen with RGB?

[poisondeathray]

---[NoImage] x264 [info]: ref P L0: 80.6% 9.7% 5.1% 2.1% 1.2% 0.6% 0.4% 0.2% 0.1% 0.0%

---[NoImage] x264 [info]: ref P L0: 81.5% 9.9% 5.2% 2.2% 1.2% 0.1%

ref:8 and ref:4 - All 40000 frames.

How many ref should I use? I guese 4 or less, Right?

Why 8ref have 10 values and 4ref have 6 values?

Yes that's weird, exactly what version are you using? e.g. 4ref has 4values in the CLI version

EDIT: I just tried x264vfw 1583kmod and it seems fine, i.e. 10ref has 10 values

[VHDBBTX]

1ref: Capture with lossless x264vfw.1583kMod.generic.x86.
4&8ref: Encode with x264 core 94 r1583 7608d73.

[poisondeathray]

1ref: Capture with lossless x264vfw.1583kMod.generic.x86.
4&8ref: Encode with x264 core 94 r1583 7608d73.

encoded with r1583 CLI generic? ie. from x264.nl, or kmod patched version?

regardless I tested both , and they both have 10ref, and 10entries ... I'm not sure why you're getting those results... can you post the full log file

[VHDBBTX]

Job commandline: "C:\Program Files\MeGUI\tools\x264\x264.exe" --pass 3 --bitrate 389 --stats "F:\A.stats" --thread-input --threads 2 --keyint 300 --min-keyint 30 --bframes 0 --ref 4 --qcomp 1 --me tesa --direct temporal --subme 9 --partitions all --trellis 0 --no-dct-decimate --no-fast-pskip --psnr --ssim --fullrange on --sar 1:1 --output "F:\A.mp4" "F:\A.avs"

x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
x264 [info]: profile High, level 1.3

x264 [info]: frame I:138 Avg QP:12.23 size: 7308 PSNR Mean Y:50.19 U:53.37 V:53.73 Avg:51.04 Global:51.02
x264 [info]: frame P:39862 Avg QP:12.26 size: 1602 PSNR Mean Y:48.91 U:52.24 V:52.60 Avg:49.79 Global:49.75
x264 [info]: mb I I16..4: 2.8% 49.4% 47.9%
x264 [info]: mb P I16..4: 0.1% 1.6% 1.4% P16..4: 48.2% 9.3% 6.8% 2.0% 1.3% skip:29.4%
x264 [info]: 8x8 transform intra:52.4% inter:26.1%
x264 [info]: coded y,uvDC,uvAC intra: 94.5% 93.6% 90.5% inter: 46.0% 40.0% 37.5%
x264 [info]: i16 v,h,dc,p: 42% 13% 27% 17%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 13% 14% 4% 7% 9% 5% 7% 8%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 10% 7% 6% 10% 12% 8% 10% 9%
x264 [info]: i8c dc,h,v,p: 39% 17% 34% 10%
x264 [info]: Weighted P-Frames: Y:2.4%
x264 [info]: ref P L0: 80.5% 10.5% 5.5% 2.2% 1.2% 0.1%
x264 [info]: SSIM Mean Y:0.9960939
x264 [info]: PSNR Mean Y:48.913 U:52.242 V:52.603 Avg:49.795 Global:49.750 kb/s:389.31
encoded 40000 frames, 120.07 fps, 389.32 kb/s
-[Information] Final statistics
Video Bitrate Desired: 389 kbit/s
Video Bitrate Obtained (approximate): 390 kbit/s

1ref: Capture with lossless x264vfw.1583kMod.generic.x86. from direct komisar.gin.by.
4ref: Encode with x264 core 94 r1583 7608d73. from direct x264.nl. Official megui use x264(1376 Jeeps) I just put new version.

Thank you.

[poisondeathray]

Weird.... I see that you're using MeGUI. I just tried an encode with 10ref, and got 10 entries using MeGUI.... so not sure what's going on. Are you using the latest build? 0.3.4.13

Also you aren't using b-frames.... You are losing huge compression efficiency by not using them....unlike other encoders, x264 b-frames are truly incredible for compression/quality at a certain filesize/bitrate.... and you are using lowish bitrates

[VHDBBTX]

0.3.4.0, I update it and it tell 0 file can be updated.

Hmm... If video on screen bitrate is 200Kb capture become to 800Kb(x264lossless) and what bitrate should I use?

Thank you for suggestion.

[poisondeathray]

0.3.4.0 ???

do you have the development update server to the screenshot below? the update will have r1583 to download within megui (you don't need to manually replace)

Hmm... If video on screen bitrate is 200Kb capture become to 800Kb(x264lossless) and what bitrate should I use?

I don't understand this question , can you clarify?

You can use CRF modes as well, if bitrate isn't important. You specify a quality level, and x264 will figure out the best bitrate for that level. So higher complexity content will use more bitrate, lower complexity will use less etc... because setting an arbitrary value "x kbps" might not be appropriate for all types of content. It might be too high for some, too low for others...

Also I see 3passes in your log - that's basically useless when using x264. Even one of the major x264 programmers has confirmed this numerous times.
http://forum.doom9.org/showthread.php?p=1397725#post1397725

[VHDBBTX]

Play video which have 200Kbps, capture it use x264 lossless and this captured file have 800Kbps then I will encode with x264, So how many bitrate should I use?

Hahaha, my English will be really bad. ^^

[poisondeathray]

well you english is probably better than my <insert whatever your native language is>

there are too many variables to answer that question. It will depend on the content complexity and how compressible it is , on the original codec and compression, on whether or not you pre-process it (e.g. denoise and filter noisy source footage) , what your tolerance is for quality, what settings you use (e.g. if you use b-frames or not), etc....

read up on 1pass CRF mode in those previous article, it's really useful in some cases

If you NEED a specific filesize/bitrate, then use 2pass mode. e.g. you might have capacity constraints when making a blu-ray disc , or if this is for streaming and have bandwidth$ considerations, etc...

[VHDBBTX]

Hmm... Thank you so much, I'm Thai and I very welcome if you will come to visit my country.

I used automated 3 pass but why result is 2 pass, What first pass do?
You will found questions of the very newbie like me for another long. ^^

[poisondeathray]

1st pass basically quickly examines the file and allocates bitrate and frametype decision (I,P,B) . You can use a slow first pass (--slow-firstpass), but that adds very little additional benefit

Not sure why you only got 2passes from entering automated 3pass, maybe it's broken? But your log file says --pass3 (regardless, 3passes are a waste of time)

[VHDBBTX]

In mediainfo.

Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=tesa / subme=9 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=2 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / constrained_intra=0 / bframes=0 / weightp=2 / keyint=300 / keyint_min=30 / scenecut=40 / intra_refresh=0 / rc=2pass / mbtree=0 / bitrate=389 / ratetol=1.0 / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00

[poisondeathray]

mediainfo can be wrong, the log file is more accurate

i just tested the 3pass automated in megui 0.3.4.13, it works properly and overwrites the 2nd pass. Test this yourself on a small test file. You will see that it does 3passes (even though it's useless )