My intent is to capture VHS video to AVI/H.264 for editing, burning to DVD, viewable on TV or computer.
On this site, the clear recommendation is to leave the VHS capture as interlaced; do not deinterlace. (That issue will be addressed automatically when I edit and then burn to DVD.)
I have practice-captured using both VirtualDub and PotPlayer.
In VirtualDub, I’ve set-up as: Capture>Video>Set Custom Video Format>YUY2 / YUV422 interleaved (I read to capture as such).
In PotPlayer, I have “Disabled” deinterlacing.
When I view the resulting AVI file(s) (from either capture program) in MeadiaInfo, under Video Scan Type it reports: “Progressive”. I’ve tested several times.
Any clues how I might be erring?
Against my understanding, could my VHS machine (JVC HR-S9800, w TBC) or my USB Capture device (Hauppauge) be sending a "progressive" signal to the capture software?
Am I not understanding correctly that progressive means that it was deinterlaced?
Thank you.
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Last edited by Avagadro1; 8th Sep 2020 at 21:08.
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No it means the file is marked as progressive but the underlying data in the file is probably fine
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Mediainfo just reports metadata. It does not look at the actual content. So it's just reporting how the file was encoded or flagged
An encoder has to be set to encode interlaced, and the field order has to be set. TFF or BFF
If the encoder that you are using doesn't give those options, it encodes progressively, even if the content is interlaced . The content might be ok, but that can still cause problems in other programs . You might have to manually interpet them in other programs like NLE's . Otherwise you get other problems. For example scaling will be done progressively instead of interlaced, and you will get artifacts -
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Again, ALL, I repeat ALL vhs signals are interlaced, even if the source material is telecined or PsF. Thus, you should ALWAYS be capturing it as interlaced. After it is captured, if you know for a fact that the source (prior to being put on vhs) was film (which is always progressive) it should be ITVC'd in software. And if it was progressive video (rare in the old days but certainly possible now), it should be deinterlaced.
If it was interlaced all along (e.g. from an old analog camera straight to vhs), it should likely remain interlaced - though the end result might be better served being progressive, depending on how it is applied. E.g. Dvd -> interlaced, YT -> progressive.
How it is captured, encoded/compressed, and stored depends on the device and software used, and the settings used.
If you are using a workflow that, possibly due to technical or programming inadequacies or shortcuts, automatically encodes interlaced as progressive, that's down to the workflow. Which can be changed now that you have been told more about how this is supposed to work.
Scott
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