Converting 29fps to 24fps with pulldown flag Saves space?
with the same quality?
I have a concert DVD with 20 year old footage on it that is all interlaced. If I use telicide()/decimate() or fielddeinterlace() and convert it to 23.9fps then use the 2:3pulldown flag will this lower the quality or cause any studdering, because it looks like it will save a ton of space. The original DVD is 6GB, but it is coming in under 4GB after applying these filters and sampling. Does this sound right or am I missing something here? Thanks guys! |
Re: Converting 29fps to 24fps with pulldown flag. Saves spac
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I tried the convert60ito24p script, and all I can say is that it's awesome. Here's a sample of a pure interlaced 29.97fps DVD concert of "Styx", which I encoded at 352x480 (too active to use higher resolutions for one CD), and I got it on one CD (KVCD) with reasonable good quality at 23.976fps. Here's a sample, so see for yourself :D http://www.kvcd.net/styx-sample-29.97_to_23.976.mpg This is the script I used for that concert: Code:
## DLL Section ## -kwag |
That looks excellent!!
Thanks a ton for the info and the script |
Now we can enjoy FILM (look) quality from 29.97fps Videos :mrgreen:
Note: Not to be confused with telecined material :!: If your source is FILM (such as a DVD), it's better to process as usual using "Force FILM" in DVD2AVI or using Telecide() and Decimate() in a script. The script convert60ito24p is to be used on 100% Interlaced material ONLY :!: -kwag |
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So the function of sharfis_brain at doom9.de as shown here by Kwag is a little new milestone according to gain compression in case of 29.976 Video NTSC sources when encoding them to KVCD. EDIT: Uops Kwag replied faster ;-) Quote:
Because this would avoid that much colorspace conversions. so ... - import your 4:2:0 YV12 based interlaced source - bob() - BicubicResize(336, 448, 0, 0.6, 0, 0, 720, 480) .STMedianFilter(3, 3, 0, 0 ) .MergeChroma(blur(1.5)) - MA (on still 29,976) - converttoYUY2() - convert60ito24p :?: Or if that not works maybe MA on fields... - import your 4:2:0 YV12 based interlaced source - separatefields() - BicubicResize(336, 224, 0, 0.6, 0, 0, 720, 240) .STMedianFilter(3, 3, 0, 0 ) .MergeChroma(blur(1.5)) - MA (on still 29,976) (as shown by boulder in his interlaced MA thread) - Weave() - bob() - converttoYUY2() - convert60ito24p :?: Maybe this would gain the quality even a bit more? (just a very very fast thought ;-) ) EDIT: Nope! ;-) As your mpeg anyhow will be encoded at YV12 ... my thought don't make sense, or am I totally confused now?? 8O (Maybe still to much aspectratios-subjects in my brain *lol*) Or maybe your PVR 250 can capture at 4:2:2 YUY2? |
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But that was just an example, which worked for me, but I know it can be further organized much better :) ( Even using another deinterlacer, because Bob() is considered a "stupid" deinterlacer :lol: ) -kwag |
I have a bunch of Kung Fu flicks that are 100% interlaced...Would using the covert60ito24p screw up the timing for subtitles do you think?
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actually yea good point, my concert dvd has subtitles. Will they get messed up if I convert to 23.9fps?
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Kwag,
I'm having doubts about what my concert DVD really is. How can I tell if it is true 29fps Video or 60fps IVTC? It was orginally shot and aired on TV if that matters. I get all this IVTC, 3:2, 2:3 pulldown mixed up no matter how many times I read about it. Any tips for determining exactly what my video content is? |
Hi audi2honda,
Load your VOBs in DVD2AVI, and press F5. See if you get this: http://www.digitalfaq.com/archives/error.gif That's what you get if your concert is true interlaced video. Edit: This site might shine some light ( or headaches :lol: ) http://www.100fps.com -kwag |
Sometimes even telecined matherial is encoded as interlaced in the original (example Simpsons Season 1 NTSC). So the best way to check is leave forced film unchecked and open the AVS containig the d2v line in virtual dub. Find a high action scene and check if there's this sequence: 3 progressive frames, 2 interlaced frames, 3 progressive frames, 2 interlaced and so on. If it does, it's telecined matherial.
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