Hi there, I finally ran across a JVC S-Vhs player (HR-S3910U) that I thought I would try out since I hear the results are so much better than composite video.
After running through the same capturing setup (except for the player and connection) and post capture processing script in avisynth+ (deinterlaced, recolored, and degrained), I'd say the s-video player results are worse. Any vertical linework is wavy. I attached two screenshots, one from the s-video version and the other from composite video. As you can see from the dancer's leg, the s-video version is much more distorted.
Would you suspect that this is maybe a player with bad heads if I can get nice output from the composite video setup? note, my composite player does not have a built in tbc
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Last edited by jeby1980; 15th Oct 2024 at 14:55.
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Post a video sample of the untouched captures, not processed images (btw no tbc in jvc vcr as well)
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Check your cable quality. Used a cheap thin svideo cable and got checkerboard patterns and odd sparadic distortion. Got a thick properly shielded cable and it all went away minus what the actual source damage introduced.
if all else fails read the manual -
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1. Did you disconnect the composite cable when doing the S-video capture?
2. Are your two images in post #1 from the same VCR, one using composite and the other S-video, or, are they from two different VCRs? If the first one is from your new JVC and the second from your old VCR, then we are not really comparing S-video to composite. We are instead comparing the quality of two different VCRs. That is a totally different set of questions and answers to what is posted here.
3. The first image definitely exhibits time base errors. -
The two images in post 1 were sourced from two different vcr's (obviously the same tape). The captures had the exact same deinterlacing and degraining applied. The left capture source was a SVHS using a svideo cable. The right capture source was a regular vhs using a composite cable.
I've done some testing with the pseudo tbc I have videonics mx-1 I have and ultimately the plain VHS produces better results. Maybe there is an issue on the head of this SVHS unit. I dont think I've seen anyone on here say that SVHS units are more prone to time based errors. IF that is the case, then if one cant find a TBC, it might make sense to go with a regular VHS and composite connection? -
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When i work with non copyright footage ill try to post.
Am using some high quality svid cables that i had from back in the day, so im thinking the head on this unit is in worse shape than my composite player -
Of course we are mostly dealing with many years old equipment without servicing, so there is no guarantee what condition the players are.
Logically, a regular VHS player in good condition will be preferable against a bad working S-VHS machine.
One of the advantages of S-VHS players is the output of S-Video which make things easier for capture cards which often have not so good Y/C separation.
You could try feeding the composite output through S-VHS player and use the S-Video output with your capture card?
You just have to see what gives the best overall result.
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