Quote:
Originally Posted by Asmodian
I have done a lot of VHS capture going for maximum quality.
4:2:2 is very important for capturing VHS. VHS is analog lines of video so you do not want to mix lines. There is real separate color data samples for each line but not much per line. 4:4:4 is completely pointless, even 4:2:2 is a lot of extra samples of the color data.
4:2:0 blurs these lines together (sub-sampled vertically) and because we capture as fields (VHS is interlaced) this ends up mixing lines that are actually an entire line apart. For this reason it is much better to capture in 4:2:2 and covert to 4:2:0 after deinterlacing.
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Yes, VHS shoud always be captured in 4:2:2 because of the interlaced format of VHS.
If one re-encodes the interlaced captured footage and wants to keep it interlaced (for whichever reason) it should still be re-encoded in 4:2:2. x264 for example supports interlaced encoding with the profile High 4:2:2. Unfortunately many HW players (TVs) seem to reject this format, so one has to encode interlaced (MBAFF) in 4:2:0, or deinterlace and then encode in 4:2:0 as you recommend.