digitalFAQ.com Forum - Which of these clips is a better capture?

After a quick analysys, I prefere the second (Hauppauge USB-Live 2), because once quickly equalized to the first for the overall look, shows (very) slightly more details (the text on the bags on the chairs), better flesh tones contrast, a little bit less noise on uniform small surfaces, (very very) slightly more details in blacks and whites areas, and does not cut a portion of the frame on the left.

At frame 137 in clip1 the bags on the chairs show thin horizontal lines. I suspect these are not details, it may be an artifact in clip1 (or a bad nnedi3 interpolation, but it does not happen on clip2).

clip1 is sharper probably because card defaults, I did not compensate for that.

Do not shrink to Y=235 while capturing with the Haupauge (it can capture 16-254).

A small restoration flow can improve the overall aspect of both.

Your taste may differ!

Histograms
Attachment 14403

Attachment 14404

Attachment 14405

Histograms after equalization
Attachment 14406

Attachment 14407

Attachment 14408

Histograms after equalization and fake deinterlace
Attachment 14409

Attachment 14410

Attachment 14411

Image comparison after equalization and fake deinterlace (use fullscreen and zoom)

https://imgsli.com/ODYzNjI

https://imgsli.com/ODYzNjM

https://imgsli.com/ODYzNjQ

script used

Code:

# plugins directory

plugins_dir="C:\Users\giuse\Documents\VideoSoft\MPEG\AviSynth\extFilters\"



        # FFmpegSource2

loadPlugin(plugins_dir + "ffms2_87bae19\x86\ffms2.dll")



        # Nnedi3

loadPlugin(plugins_dir + "NNEDI3_v0_9_4_55\x86\Release_W7\nnedi3.dll")



video_dir_1="C:\Users\giuse\Desktop\X\"

video_1="clip1.avi"



video_dir_2="C:\Users\giuse\Desktop\X\"

video_2="clip2.avi"



v1=FFmpegSource2(video_dir_1+video_1)\

.crop(0,0,-8,0).addborders(8,0,0,0)\

.crop(8,6,-12,-10)\

.assumeTFF().nnedi3(field=-2)\

#.histogram("levels")\



v2=FFmpegSource2(video_dir_2+video_2)\

.crop(8,6,-12,-10)\

.ColorYUV(cont_y=20, off_y=-10).Tweak(sat=0.8)\

.assumeTFF().nnedi3(field=-2)\

#.histogram("levels")



#subtitle(v1,video_1,size=20,align=2)

#subtitle(v2,video_2,size=20,align=2)



f_stackhorizontal(v1,v2,video_1,video_2)

#f_interleave(v1,v2,video_1,video_2)

#f_Subtract(v1,v2,video_1,video_2)



# analyze frame5 (11 after deint), frame132 (265 after deint) and frame137 (275 after deint)





function f_stackhorizontal(clip c1, clip c2, string t1, string t2)

{

stackhorizontal(\

subtitle(c1,t1,size=20,align=2),\

subtitle(c2,t2,size=20,align=2)\

)

}



function f_interleave(clip c1, clip c2, string t1, string t2)

{

interleave(\

subtitle(c1,t1,size=20,align=2),\

subtitle(c2,t2,size=20,align=2)\

)

}