DVD-RB/CCE for PAL to NTSC?
I've been looking for a way to convert a PAL DVD to NTSC. I've been using DVD-RB/CCE to compress DVDs and wondered if I could use it to do the conversion by modifying the AVS Script. Essentially, I believe, all I need is to change the frame size and frame rate. For frame size, I just need a resizer line in the script. However, I don't know what to do with the frame rate.
If I can get the VOB files properly converted, I can use IfoEdit to fix the IFO files. Any suggestions on changing the frame rate from 25 fps to 29.97 fps? Thanks |
You don't have to go from 25 to 29.9 but you have to do a 23.976 target then apply pulldown on it.
That is the way second part that gave me problems (the first one is done simply by adding a "ChangeFPS(23.976)" as last line of the script). I never find the way to have CCE to produce an output that is already pulled down. But perhaps someone else has the answer... |
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And thats why there does exist "changeFPS()" which procceds the source on a differrent way as by this beside doubled frames dynamical phase shifts and blendings are applied, so the stream looks smooth afterwards. BUT then you have to encode interlacedfinaly. And even here it isn't the right way to just apply a convertFPS(23.976). Normally you do it as describet below. SourceImport(...) fullfields=(23.976*2) KernelBob(...) # A very good bobber (= full field to framerate deinterlacer, 50fps will be the result) LanczosResize(720, 576) ConvertFPS(fullfields) SeparateFields() SelectEvery(4, 1, 2) Weave() But anyway, to me it seems that its quite difficult doing a conversion from PAL-NTSC or the other way around in DVD RB, as you need a function above .... IF DVD RB doesnt reencode the Audio (which I do assume). :) |
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But IF DVD Rebuilder is capable (for shure) to handle progressive NTSC Sources for NTSC DVD reencodings, it for shure should have a post pulldown-flag processing option/engine :? :?: And please do keep separated the words "pulldown" and "pulldown-flag", as many people will do get confused as you for yourself know exactly whats the difference between them ;-) |
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Note: Yes DBD-RB does not reencode the audio that is why I suggested to use ChangeFPS. Because I'm not sure that your way will keep the playing time unchanged. Will it ? |
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ConvertFPS() does a stupid framedoubling at specific intervals, convertFPS() does it the way explained above, so both do end up in the same Time-length but you do change the stream frame/field architecture significantly. I would never do that in case of a simple about 1fps difference of source/target. I think DVD Rebuilder should keep the quality as most as possible, and BTW! performing a pulldown-flag (or hard pulldown) on a converted 25 to 23.976 wont work in my eyes as that resulted 23.976 (the way above) isnt progressive anymore or it doesnt contain the regular progressive correct framecount. Everything "just IMHO" and should be clearified at doom9 or wherever .. ;-) My suggestion!: Leave that one at PAL IF the consumers SAP will play back PAL 625 line DVDs on a NTSC 525 Line TV (as i.E. my SAP plays back 23.976 or 29.97 streams without no problem on my PAL tv. Change/convert fps best explained here (use a translation tool): changefps() http://home.arcor.de/scharfis_brain/...rlacing/#2.2.1 Convertfps() http://home.arcor.de/scharfis_brain/...rlacing/#2.2.2 |
Re: DVD-RB/CCE for PAL to NTSC?
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As for using DVD-RB to do it, that's currently not possible because there's no way to change the runtime of the audio. |
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I understand enough to get that it won't work. It's a shame. I'll continue frameserving the PAL source into TMPGEnc XPress which does a pretty good job in converting the movie portion.
Thanks |
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