Virtualdub compression, colour settings?
Hi,
I have read this very useful guide at http://www.digitalfaq.com/forum/vide...-settings.html I am capturing hi8/video 8 tapes as per details below in virtualdub and I have some questions: Resolution: 720x576 PAL/NTSC: PAL FPS: 25 Colour space compression: YUY2 Compression: Huffyuv V2.1.1 Questions for best quality: Q1: YUY2 compression = Predict Median or Predict Left? Q2: RGB Compression = Predict Gradient or Predict Left? Once I have captured, and I start applying filters outside of capture mode in virtual dub etc Q3: What should my video compression settings be for Huffyuv – I assume the same? Q4: Video Colour depth – what should be set for “decompression format” and “output format to compressor”? I believe the filters only work in RGB, so should I convert to RGB if doing filter work to avoid going from YUY2 to RGB over and over again loosing quality? Can I capture in RGB to start with? Q5: Should “smart rendering” be on or off? Thank you. |
Always YUV (YUY2, etc).
Never RGB. Color depth always YUY2 for capture/VHS work. Always keep lossless intermediary codecs during restoration, editing. Only compress down to MPEG or H264 on final output. I use both Huffyuv and Lagarith myself, depends on project software workflow in use. Let the filters convert to/from RGB, don't try to help it. Master in/out is a YUV. You can only smart render without filters. That's a no-reencode mode. |
Thank you for your help. Excuse my ignorance...
Therefore should I change colour depth from "automatic" to "YUY2" when editing to make sure nothing happens? or can I trust it under automatic? In terms of quality: YUY2 compression = Predict Median or Predict Left? RGB Compression = Predict Gradient or Predict Left? |
Never automatic. Computers are dumb tools, make mistakes (more than humans).
Leave Huffyuv on defaults. |
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