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Umamio · 1st April 2008, 19:16

Source:
Football Clip - 720x576 (16:9) - 25fps interlaced - Huffyuv
Smartbobbed & Resized - 688x384 - 50fps - Huffyuv [ Download Here (79.3MB) ]
Duration: 6s (331 frames)

x264 build:
x264.808.vaq2.modified.exe (gcc 3.4.6 fprofiled)
[ http://files.x264.nl/VAQ2/x264.808.vaq2.modified.exe ] [ http://forum.doom9.org/showthread.ph...33#post1120033 ]

x264 args:
--pass 2 --bitrate 1284* --stats ".stats" --ref 3 --bframes 16 --b-pyramid --weightb --direct auto --filter -2,-1 --subme 6 --trellis 1 --partitions p8x8,b8x8,i4x4,i8x8 --8x8dct --me umh --merange 12 --aq-strength (variable:[0.5,1,1.5,2,2.5]) --aq-metric (variable:[0,1,2,3])

*1284k/50frames == 642k/25frames

Encodes:

Metrics 0(VAQ1.0),1,2,3 * Strengths 0.5,1.0,1.5,2.0,2.5
+ VAQ off (Strength 0, Metric 0)
[ Download Here (22.85MB, 21 files zipped) ]

Single Frame Comparison (VAQ off Vs. Metric 3 Strength 1 Vs. Metric 3 Strength 1.5 Vs. Metric 3 Strength 2 Vs. Source):

(click to enlarge)

I only have PSNR and SSIM numbers for the metric 3 encodes and with VAQ off, but you can see from the files that there is a clear visual improvement without looking at the values (I haven't seen the logs yet)

For this specific type of high... grass source at least the optimal Strength seems to be between 1.3 and 2.2, I'm still staring at these trying to compare the metrics but there might not be enough fine detail in my source to make an accurate judgement using this material.

Conclusion: VAQ loves grass sports and I love VAQ.

Edit:

Some PSNRSSIMnumberstuff:
VAQ Off:
SSIM Mean Y:0.9087551
PSNR Mean Y:33.601 U:40.486 V:41.777 Avg:34.978 Global:34.571 kb/s:1377.74

Metric 3 - Strength 0.5
SSIM Mean Y:0.9157095
PSNR Mean Y:33.513 U:40.607 V:41.806 Avg:34.904 Global:34.598 kb/s:1387.76

Metric 3 - Strength 1.0
SSIM Mean Y:0.9233749
PSNR Mean Y:33.339 U:40.752 V:41.876 Avg:34.751 Global:34.409 kb/s:1385.98

Metric 3 - Strength 1.5
SSIM Mean Y:0.9265114
PSNR Mean Y:32.728 U:40.651 V:41.664 Avg:34.173 Global:33.816 kb/s:1369.50

Metric 0 - Strength 1.5
SSIM Mean Y:0.9256282
xPSNR Mean Y:33.066 U:40.626 V:41.715 Avg:34.488 Global:34.161 kb/s:1379.88

Metric 3 - Strength 2.0
SSIM Mean Y:0.9226995
PSNR Mean Y:31.642 U:40.306 V:41.231 Avg:33.132 Global:32.750 kb/s:1357.14

Metric 0 - Strength 2.0
SSIM Mean Y:0.9247225
PSNR Mean Y:32.291 U:40.411 V:41.386 Avg:33.749 Global:33.420 kb/s:1366.41

Metric 3 - Strength 2.5
SSIM Mean Y:0.9108505
PSNR Mean Y:30.138 U:39.825 V:40.674 Avg:31.679 Global:31.292 kb/s:1347.17

Disclaimer: I mostly don't know what I am talking about or what I am doing, so I advise you to not trust any of this and do try things out for yourself.

1st April 2008, 19:16	#30 \| Link
Umamio Cost Effective Join Date: Nov 2007 Posts: 64	20 + 1 VAQ Encodes Source: Football Clip - 720x576 (16:9) - 25fps interlaced - Huffyuv Smartbobbed & Resized - 688x384 - 50fps - Huffyuv [ Download Here (79.3MB) ] Duration: 6s (331 frames) x264 build: x264.808.vaq2.modified.exe (gcc 3.4.6 fprofiled) [ http://files.x264.nl/VAQ2/x264.808.vaq2.modified.exe ] [ http://forum.doom9.org/showthread.ph...33#post1120033 ] x264 args: --pass 2 --bitrate 1284* --stats ".stats" --ref 3 --bframes 16 --b-pyramid --weightb --direct auto --filter -2,-1 --subme 6 --trellis 1 --partitions p8x8,b8x8,i4x4,i8x8 --8x8dct --me umh --merange 12 --aq-strength (variable:[0.5,1,1.5,2,2.5]) --aq-metric (variable:[0,1,2,3]) 1284k/50frames == 642k/25frames Encodes:* Metrics 0(VAQ1.0),1,2,3 * Strengths 0.5,1.0,1.5,2.0,2.5 + VAQ off (Strength 0, Metric 0) [ Download Here (22.85MB, 21 files zipped) ] *Single Frame Comparison (VAQ off Vs. Metric 3 Strength 1 Vs. Metric 3 Strength 1.5 Vs. Metric 3 Strength 2 Vs. Source): (click to enlarge) I only have PSNR and SSIM numbers for the metric 3 encodes and with VAQ off, but you can see from the files that there is a clear visual improvement without looking at the values (I haven't seen the logs yet) For this specific type of high... grass source at least the optimal Strength seems to be between 1.3 and 2.2, I'm still staring at these trying to compare the metrics but there might not be enough fine detail in my source to make an accurate judgement using this material. Conclusion:* VAQ loves grass sports and I love VAQ. Edit: Some PSNRSSIMnumberstuff: VAQ Off: SSIM Mean Y:0.9087551 PSNR Mean Y:33.601 U:40.486 V:41.777 Avg:34.978 Global:34.571 kb/s:1377.74 Metric 3 - Strength 0.5 SSIM Mean Y:0.9157095 PSNR Mean Y:33.513 U:40.607 V:41.806 Avg:34.904 Global:34.598 kb/s:1387.76 Metric 3 - Strength 1.0 SSIM Mean Y:0.9233749 PSNR Mean Y:33.339 U:40.752 V:41.876 Avg:34.751 Global:34.409 kb/s:1385.98 Metric 3 - Strength 1.5 SSIM Mean Y:0.9265114 PSNR Mean Y:32.728 U:40.651 V:41.664 Avg:34.173 Global:33.816 kb/s:1369.50 Metric 0 - Strength 1.5 SSIM Mean Y:0.9256282 xPSNR Mean Y:33.066 U:40.626 V:41.715 Avg:34.488 Global:34.161 kb/s:1379.88 Metric 3 - Strength 2.0 SSIM Mean Y:0.9226995 PSNR Mean Y:31.642 U:40.306 V:41.231 Avg:33.132 Global:32.750 kb/s:1357.14 Metric 0 - Strength 2.0 SSIM Mean Y:0.9247225 PSNR Mean Y:32.291 U:40.411 V:41.386 Avg:33.749 Global:33.420 kb/s:1366.41 Metric 3 - Strength 2.5 SSIM Mean Y:0.9108505 PSNR Mean Y:30.138 U:39.825 V:40.674 Avg:31.679 Global:31.292 kb/s:1347.17 Disclaimer: I mostly don't know what I am talking about or what I am doing, so I advise you to not trust any of this and do try things out for yourself. Last edited by Umamio; 2nd April 2008 at 14:00.