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Old 5th March 2004, 09:59   #1  |  Link
Mario Bros
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29.970fps Interlaced source please help

I have an mpeg2 encoded video with 29.970fps and interlaced frames.
My problem is that not all frames are interlaced. When i use vdubmod's deinterlace filter it will be applied to all frames. It will reduce the resolution of progressive ones. I want to get this:

29.970fps some frames interlaced >> 25.000fps non interlaced video

I'd like to use Avisynth and it's filters, but i dont no witch filter to use, and what settings.

I'am a beginner with encoding, please help.
If this thread has been answered somewhere please insert a link to it.


And sorry for my bad english.
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Old 5th March 2004, 10:07   #2  |  Link
morsa
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Depending on what deinterlace filter you are using, progressive frames won't be degraded.
The other task, such as converting framerate from 29,970 to 25 requires an avisynth script and can't be done with Vdubmod ( at least as good as Avisynth does)
Search for 30p to 25p or something like that inside this forum.
Also look at avisynth.org
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Old 5th March 2004, 10:23   #3  |  Link
Mario Bros
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Thank you for your reply.

I heard about telecine, decimate filters, they can remove duplicated frames, since this is a TV source video, can i use them to 29.970fps>25fps deint conversion?

If i make such conversion how can i sync the audio to 25fps?
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Old 5th March 2004, 10:26   #4  |  Link
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I also done the searches you suggested, but had no luck, none of the found threads helped me, they had nothing to do with audio sync, decimate, deinterlacing.
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Old 5th March 2004, 12:58   #5  |  Link
morsa
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you donīt need to resync the audio if you are doing a framerate conversion, unless you want to speed up or slow down your video.
If your source is from real video telecine has nothing to be with that.It is meant for restoring film to video original framerate.
You could use decimate but the output would look jerky.
What is your source exactly?
Please tell us very very clear where you are now and where you want to go..
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Old 5th March 2004, 13:10   #6  |  Link
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Isnt it IVTCable? If so just ivtc to progressive 23.976 and speed up to 25fps pal.
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Old 6th March 2004, 04:08   #7  |  Link
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I would say go for Decomb (an avisynth filter) since it's so well documented and tested, and can be made to take care of certain telecine problems if needed through the use of manual overrides.

That would get you to 23.976, and then you could just use an avisynth function like ConvertFPS.

You could also check out RePAL.

I'm an NTSC guy (here in R1 land) so that's about all I can say until I get some more PAL sources to work with.

/me goes back to waiting for a remastered boxset of NGE to fall out of the sky
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Old 6th March 2004, 13:37   #8  |  Link
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Quote:
Originally posted by DarkNite
That would get you to 23.976, and then you could just use an avisynth function like ConvertFPS.
Nonono, you definitely don't want to use ConvertFPS in this case as you would get blended frames with it; use AssumeFPS(25.0) and use something like SoundStretch to speed up the audio to 25 FPS (you could call SoundStretch's output "blended audio frames", but those really aren't noticeable... ), like it's done with every other movie that's on sale in PAL land.

np: nix
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Old 6th March 2004, 15:49   #9  |  Link
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Quote:
/me goes back to waiting for a remastered boxset of NGE to fall out of the sky
hehe... get the PAL r4 copy. i think they're okay (i've not actually seen them )

actually, one question i have that is a little OT: how many on this forum have TVs capable of displaying NTSC and PAL?

i know mine does, so i needn't worry about format conversion so much. a lot of r4 titles don't get converted at all and are left in NTSC (which i appreciate greatly for TV series shot in that format.)
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Old 6th March 2004, 22:27   #10  |  Link
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Quote:
Originally posted by Mug Funky
actually, one question i have that is a little OT: how many on this forum have TVs capable of displaying NTSC and PAL?
I'd say roughly all Europeans that bought their current TV set up to 10 or 15 years ago...

np: Beans - Mutescreamer (El-P Remix) (Now Soon Someday)
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Old 6th March 2004, 22:48   #11  |  Link
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really weird:
my 12 years old JVC-TV can't even handle PAL-60
but my parents even older (17 years) robotron-TV (made in GDR [German Democratic Republic, not to confuse with FRG]) is able to handle PAL-60! hehe
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Old 7th March 2004, 01:45   #12  |  Link
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My bedroom TV (a decent 27" RCA) is maybe 4 years old and doesn't care what you feed it as long as you don't use the S-Video port. I suspect that has something to do with my cousin attempting to shove an RCA plug or RF adapter through it several times though.

The Panasonic in my livingroom is a whole different story. It's a bigoted TV if their ever was such a thing. It doesn't even like NTSC-M let alone anything PAL. You'd think it would at least display all formats prefixed by NTSC eh?
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Old 7th March 2004, 15:30   #13  |  Link
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heh. this should really be split into a poll thread...

i didn't realise multi-format teevs were so uncommon. i suppose mine's new (my 25+ year old National finally exploded for the last time 2 years ago) but it's not terribly expensive.
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Old 3rd April 2004, 15:59   #14  |  Link
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My tv displays ntsc and pal without problems.
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Old 4th April 2004, 11:05   #15  |  Link
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im an aussie in pal-land and all new tvs that i know of (probably to around 3 years) support ntsc... but wait!

didnt the mario bros. have a question?

you said that some frames are interlaced and some are not, but it was from a tv source? is this film content taped off your tv?

if so, then you code should be this:

mpeg2source ("xxxxxxxx.d2v")
doubleweave
pulldown (0, 3) # play with these numbers to get the right results
assumefps (25, true)

that will get you the proper frames. if youre doing a full blown ntsc-pal conversion for film, then also add this.

bilinearresize (720, 576)
resampleaudio (48000) # or whatever frequency
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