Since you are NTSC, forget 240 lines.
The real reason people don't like how 352 x 576/480 looks on their TV, has to do with the built-in scalers of the DVD players they own. Most of those scalers sucks and this is a simply fact. It is simply like that. Yes, this framesize is legal and fully supported by the DVD video specifications but since it is not used for commercial reasons, the support is "limited" in quality terms.
The situation is even worse with 1/4 D1 (352 x 288/240).
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Originally Posted by slacker
I also use my (PAL) DVD8 camcorder's passthrough option to convert my VHS tapes.
Full (PAL) resolution gives me the best results.
Also depending on the quality of the recordings I most use bitrates of 5000-7000 and always 2 pass encoding..
Also using different VHS players can make a lot of quality difference.
I have here 2 JVC S-VHS machines but the best results from standard VHS I still get with a Panasonic VHS machine. .
Here a few PAL samples:
From standard VHS, Sony DVD8 passthough, Avisynth DNR2 filter, Procoder 2 Pass encoding 5000Max7000 Kbit.
turboupload: Diesel_Creature_VHS.VOB
turboupload: Eurosport_2000_VHS.mpg -
Originally Posted by The_Doman
VHS tapes that are softened by a JVC TBC/DNR VCR and then further softened by input noise reduction in a DVD Recorder may not look much different at 720 then at 352. Playing these tapes in a VCR with a better signal system (i.e. older VCR) can provide superior results that clearly demonstrate the improvement at 720. -
352 by 240 will look worse because it has a 1150k bitrate and is usually MPEG1 w/48Khz audio
Think VCD with a different audio bitrate.
The best bitrate IMHO is what will fit on movie or 3 to 4 1/2 hour shows on 1 DVD. Note that a half hour show only runs approx 22 to 23 minutes once the commercials are trimmed out.
Plus of course bitrate is only part of the equation for quality. How it is allocated is important too.
Thus 2 Pass VBR will always look supperior to 1 pass CBR for teh same file size.
VBR lets the encoder use a higher bitrate for action scenes and a low bitrate for things that are static. Think Football game in the USA. During a play plenty of action needing a high bitrate to look good, OTOH Players standing around waiting for the referee or while a player is being checked out to see how bad an injury or focused on the announcers can get by with a much lower bitrate.
Thus we come to the fact that there is no best bitrate, the best bitrate depends on the source. If you were encoding a debate where things are pretty static for the whole show you could get good results for a much longer amount of time than you would encoding a Car Race where everything is moving around at a fast clip.
Don't focus on how many discs it will take, discs are cheap, typical sale price Verbatim (good media) $14.99 for 50 or $0.30 per disc. After figuring in the time required to encode the electrical power usage ($$) what's the sense of saving 30 or 60 cents. Trust me in later years when you will have to be watching on a HD since Sd is going away you will be happier if you got the best results/quality you could. -
you would really be best just taking a 5 minute sample and trying it both ways. It depends heavily on how good your source is to begin with. If it's a blurry video to begin with you aren't going to render any benefit from 720x480 (I've personally never seen a difference with vhs sources anyways between this and half D1). You may actually find that you have more artifacts with 720x480 because the mpeg compression cannot overcome all the bad videography (shaking camera, noise..etc). You may get a better looking product with the 352x480 at the same or slightly lower bitrate.
We are high on opinions here but we don't even know what the source video looks like...so it's up to you to try it out and see what looks best to you or if you don't mind sacrificing x for y. -
Originally Posted by SatStorm
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