Avisynth histogram vs. ColorYUV for calibrating levels?
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Which is better for calibrating the levels of a clip in Avisynth, the histogram or ColorYUV(analyze=true)?
Because even if I stretch the luma 245 with ColorYUV, the graph does not enter the brown portion. I thought the brown parts of the histogram graph are from 0-15 and 236-255? This is the Avisynth script I used for the attached pictures. Code:
AviSource("1995.avi") |
to modify the luma levels i suggest you use the ylevels filter (which is more accurate)
and for the histogram you can use ColorYUV(analyze=true) which display numbers instead of a graph or both at the same time: ColorYUV(analyze=true) Histogram("levels") Brown parts are out of range levels for TV but the more important is to get the blacks right (not too dark) you can have brights out of range... a little |
1 Attachment(s)
Quote:
Attachment 5645 |
Luma stretched
Quote:
The lowest value in this clip is 9 and the highest 242. For my future caps I will decrease the contrast and brightness much more, but it's hard to find a scene which has a large range though. |
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