Asuka_Fan
2003-03-08 04:25:49 ( ID:jcj79f0xnr6 )
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Hi. I'm a newbie to all of these stuff, though I'm working hard trying to learn a bit (I've downloaded - & read - a lot of guides at www.VCDHelp.com , www.doom9.org , etc. - God bless those guys, BTW-), I've installed many programs, BUT...
...I've failed miserably with a "simple task": I've ripped a commercial anime DVD (DVD-9 format, about 7 GB) to edit it (to add another audio track... it's too long to explain), and I need TO LOWER THE VIDEO BITRATE at TMPGEnc 2.59 in order to get a DVD-R (about 4.7 GB, you know).
It seems quite simple... BUT the resulting DVD-R, though it works at my stand-alone DVD player, has CHOPPY, faltering VIDEO (without having changed the frame rate... or I've changed it inadvertently??). I can't imagine WHY this happens, I've triple-checked everything!!!
I've used these parameters:
Project Wizard - NTSC (16:9)
Interlace
Top field first (field A)
AR = 16:9 525 line (NTSC)
Content of video = Film movie (as Pin point Help recommends)
(BTW, it's anime, with 2 AC3 192 kbps audio tracks.)
2-pass VBR
Average 4500, Max. 6000, Min. 1000
DC = 9 bits
Motion search = Highest quality (****ing slow)
Video arrange = Full screen (keep AR)
GOP (default) = 1-5-2-1-18 + Output b. + Detect Scene C.
That's all I've used (no source range, no inverse telecine, no "xxxxx"). That bitrate is more than enough to get non-choppy video, IMHO. Should I try any filters (any kind of "De-interlace" or "Inverse telecine", perhaps)?? Or I've used something I shouldn't have used??
PLEASE, if you're so kind, HELP ME!!! It's a bit frustrating to study those comprehensive guides, to spend MANY hours of encoding time & to spend quite a few $ to get that expensive DVD-recorder... And, after all that, to be completely unable to accomplish this simple task!! I feel a bit stupid...
Ashy
2003-03-08 15:03:34 ( ID:n3gjkhi6dvc )
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First of all is this choppy playback happening on both the DVD player and the PC or just DVD player and is it regular or intermittent.
Have you used these disks before? Choppy playback can be caused by cheap disks and using too high speed. Not all DVD-R are the same. Maybe try 1x if these are cheap disks.
Check your MPEG with Bitrate viewer to make sure it conforms to the specs and is the same frame rate as the original and look for bitrate spikes.
Have you tried changing the field order?
Not that this will affect the playback but the 'Highest quality' setting is unecessary. There will be no difference between it and the 'High quality' setting except for the dramatic increase in time and is especially not required for DVD encoding.
Finally why not try DVD2ONE, this will fit your movie on to a regular 4.7 gb disk in about 20 mins.
ASHY
Asuka_Fan
2003-03-09 03:18:39 ( ID:jcj79f0xnr6 )
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Well, firstly, THANKS for your efforts, ASHY. And, about the choppy playback: it happens on both the DVD stand-alone player and the PC DVD-ROM, and it's almost regular ("almost" because it's much more noticeable at high-motion scenes, & a bit less noticeable at the PC).
The DVD-R are brand disks (Verbatim) burned at 1x speed; I think they're at least of fair quality... though I'm not 100% sure, I'm just beginning with this madness of burning DVD-Video disks. Do you recommend me any other brand??
Anyway, YOU WERE RIGHT: Bitrate Viewer says that the ORIGINAL video file is:
DCT precision: 10
DCT type: Field
Scan type: Alternate
Frame type: Interlaced
& my NEW video files are quite different:
DCT precision: 9
DCT type: Frame
Scan type: ZigZag
Frame type: Progressive
BUT... I DON'T KNOW WHY THEY'RE SO DIFFERENT!!!
- Should I NOT use the NTSC-DVD template at Project Wizard??
- Is it wrong to select "Film movie" as "Content of video"?? (though Pin Point Help recommends it instead of using "Video movie")
- And: Does it matter the different DCT precision??
&, about DVD2ONE: I'm sure it's REALLY useful, but I need more control than just copying disks: you know, I'm ADDING AN AUDIO TRACK (from another source), & that means re-authoring the DVD (& a lot of hard work, BTW).
THANKS A LOT and, PLEASE, post any other suggestions that you have.
Ashy
2003-03-09 13:51:46 ( ID:n3gjkhi6dvc )
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I can already see your problem.
You didn't post the framerate of the MPEGs in the info that bitrate viewer gave you, but I will guess your original movie is 29.97 fps and your encoded movie is 23.976 fps.
It is the frame rate difference which is causing the problem. The reason your frame rate is different is because you have chosen 'Film movie' as content of video. This has caused the framerate to be changed to 23.976 and the '3:2 pulldown when playback' option to be invoked.
The only time you would use the 'Film movie' setting is when your movie is a 23.976 progressive movie not a 29.97 interlaced movie.
The movie you have created is a 23.976 fps progressive movie instead of an 29.97 interlaced movie.
You have 2 options:
1. Re-encode the movie correctly not using the 'Film movie' option
2. Use DVD2AVI and the 'ForcedFilm' option to strip the RFF flags from your movie to make your movie into a 23.976 progressive movie then use the 'Film movie option'
My advice seeing as you are new is to use option 1.
ASHY
Ashy
2003-03-09 13:58:31 ( ID:n3gjkhi6dvc )
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>You didn't post the framerate of the MPEGs in the info that bitrate viewer gave you, but I will guess your original movie is 29.97 fps and your encoded movie is 23.976 fps.
Your movie probably states as being 29.97 fps in bitrate viewer but it's true frame rate is 23.976. This is because of RFF pulldown flags and is why Iam referring to it as 23.976.
ASHY
Asuka_Fan
2003-03-13 00:20:54 ( ID:jcj79f0xnr6 )
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Hi again, ASHY.
Sorry for not having answered before, I had too much work ("real-life for-getting-food work", I mean). Anyway, better now than never: THANKS A LOT!!!
...You were 100% right, I've re-encoded a little piece of the file & it works. Perfectly. & Bitrate Viewer is really an awesome program.
You've been really helpful. THANKS & GOOD LUCK!!
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