576i upscaled to 720p - How to sharpen for YouTube?

nhope · 19th December 2011, 09:55

I am upscaling PAL DV (720x576-50i) to 982x720-25p for YouTube (and maybe for Blu-ray).

Here is a second of (graded) PAL DV source.

I'm framserving in RGB24 from Sony Vegas, then using this basic script:

Code:

AviSource("d:\fs.avi")
AssumeBFF()
ConvertToYV12(interlaced=true, matrix="PC.709")
QTGMC( FPSDivisor=2, EdiThreads=2 )
NNEDI3_rpow2(rfactor=2, cshift="spline36resize", fwidth=982, fheight=720)

Here is the same video after that processing (in uncompressed RGB).

And here is a screenshot:

It needs some sharpening, but I have little experience in this area. I know that too much sharpening can cause problems with compressing, in particular as my main target is YouTube. I tried adding the following line to my script:

Code:

LSFmod(defaults="slow",strength=500)

And here is the result on YouTube (watch in 720p!!), along with some typical underwater footage that I need to process. It looks OK but:

- Is LSFmod a sensible way to sharpen upscaled footage such as this?
- In your opinions is it too much or too little sharpening?
- Any suggestions for other ways to sharpen this?
- Am I gaining much by using LSFmod over, say sharpen(0.75,0.75)

Thanks!

19th December 2011, 09:55	#1 \| Link
nhope partially-informed layman Join Date: Jan 2002 Location: Bangkok, Thailand Posts: 314	576i upscaled to 720p - How to sharpen for YouTube? I am upscaling PAL DV (720x576-50i) to 982x720-25p for YouTube (and maybe for Blu-ray). Here is a second of (graded) PAL DV source. I'm framserving in RGB24 from Sony Vegas, then using this basic script: Code: AviSource("d:\fs.avi") AssumeBFF() ConvertToYV12(interlaced=true, matrix="PC.709") QTGMC( FPSDivisor=2, EdiThreads=2 ) NNEDI3_rpow2(rfactor=2, cshift="spline36resize", fwidth=982, fheight=720) Here is the same video after that processing (in uncompressed RGB). And here is a screenshot: It needs some sharpening, but I have little experience in this area. I know that too much sharpening can cause problems with compressing, in particular as my main target is YouTube. I tried adding the following line to my script: Code: LSFmod(defaults="slow",strength=500) And here is the result on YouTube (watch in 720p!!), along with some typical underwater footage that I need to process. It looks OK but: - Is LSFmod a sensible way to sharpen upscaled footage such as this? - In your opinions is it too much or too little sharpening? - Any suggestions for other ways to sharpen this? - Am I gaining much by using LSFmod over, say sharpen(0.75,0.75) Thanks!