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View Full Version : JERKY FRAMES after Conversion to DVD??


venomm
27th May 2005, 12:57
Hi, I am sure someone has had this problem before, but, I cannot find it here:

I generally use Winavi to convert my files from avi/Divx etc to DVD format. However, when I put the burnt DVD into my stand-alone DVD player and when there is a faster-moving section in the film/documentary, or a quicker pan of an area etc, the picture/character(s) become jerky.
This does not seem to happen on the PC upon playback.

I was therefore wondering if there is a "truer" converting programme out there which will avoid these jerky movements? I do not really understand much about bitrate speeds etc, so I would appreciate a reasonably simple programme that even idiots like me can understand how to convert properly. Or am I not using Winavi properly? I use the PAL format, if this helps?

Regards, V

ppera2
27th May 2005, 15:11
For beginning read some guides.

You need to supply much more details beside that it's PAL.

thecrock
2nd June 2005, 16:57
VENOMM i have the same problem with some, not all of my avi's. I think it might be down to my player which is pal, playing 23.967 fps ntsc. i used vso copy to dvd to force pal(25fps) then burned with nero and the dvd played fine in my standalone, but this was an anime movie and so i really can't say whether changing framerate has worked conclusively until i try it with a non anime film. I have posted about this problem on a couple of other sites and nobody has been able to help me much so i may be barking up the wrong tree, sorry i couldn't be of more help but i will post back here when i've tested changing framerates a little more. If you sort out the problem in the meantime i would be interested in hearing about it.

As to ppera2's reply, which guides on this subject would those be?

ppera2
2nd June 2005, 17:03
As to ppera2's reply, which guides on this subject would those be?


Guides about formats, framerates. Primitive conversion 24>25 or vice-versa will always result with jerk.

venomm
6th June 2005, 13:54
OK. Does anyone here have the best framerate when converting avi to DVD to avoid these jerky frames, please? Also, will someone let us know which will be the best conversion program so we can set the correct framerate before converting?
Any help really appreciated now, guys.
Cheers,
V

Guest
6th June 2005, 13:58
Please stop asking for the "best" stuff, per forum rule 12. Thank you.
:readrule:

venomm
6th June 2005, 14:34
Sorry about that, but I was not asking for the "best stuff", just if anyone has any success in curing this problem and if so, what did they use i.e. settings/program. "thecrock" has already pointed out that he has had no success with his postings re: jerky frames, and we both obviously really want some help here as whatever we are doing isn't working; yet others have obviously sorted this out already.

Mug Funky
6th June 2005, 14:55
basically, choose the framerate that's closest to your source's frame rate.

if it's a 23.976fps avi, then make it NTSC at 23.976, and run DGpulldown to bump it up to 29.97.

if it's 29.97 or 30fps, use 29.97fps NTSC

if it's 25fps, then use PAL.

of course, if you're in NTSC land than it's unlikely your TV can do PAL at all, and it's possible the jerky you're seeing comes from a (crappy) PAL to NTSC conversion being done by your standalone. if you're in PAL land, then your TV can probably do all formats and you can simply set your DVD player to multi-format (yay).

btw, i've never heard of WinAVI. i hope you didn't pay money for it, as you can do everything here with free software :)

ppera2
6th June 2005, 15:07
OK. Does anyone here have the best framerate when converting avi to DVD to avoid these jerky frames, please? Also, will someone let us know which will be the best conversion program so we can set the correct framerate before converting?
Any help really appreciated now, guys.
Cheers,
V

For me, best converting programm is AVISynth. :)

But if your prioirity is simple usage, it is certainly not best.

There is good reason why we force to read guides - if you don't know what are you doing, and with what , then it is normal that results are not good.
In other words, results depend much from that how many time you will invest in. As Mug Fanky said, no need to invest money :)

venomm
6th June 2005, 15:24
Thank you, "Mug Funky" I will check to see if the 2 framerates coincide - original and conversion - I hope this sorts it all out, then. I have a PAL TV and DVD player and I have tried to make a region-free DVD in the hope this will avoid problems. Like many here, I guess, I am not a techno-wizard and tend to rely on the program I use to just do its job successfully. Problems like this framerate leave me out in the cold. BTW, is it just the frame rate that causes this jerky movement, or will/can it be something else too?
Cheers, V.

thecrock
8th June 2005, 01:16
The last movie i burned was 23.967 fps and it had jerky playback so i burned it again after converting it to 25 fps and although this hasn't solved the problem completely the playback was noticeably better, but the media i used was different so again this is by no means conclusive venomm. Post back if you sort this thing out.

PEACE

zilog jones
8th June 2005, 13:37
Thank you, "Mug Funky" I will check to see if the 2 framerates coincide - original and conversion - I hope this sorts it all out, then. I have a PAL TV and DVD player and I have tried to make a region-free DVD in the hope this will avoid problems. Like many here, I guess, I am not a techno-wizard and tend to rely on the program I use to just do its job successfully. Problems like this framerate leave me out in the cold. BTW, is it just the frame rate that causes this jerky movement, or will/can it be something else too?
Cheers, V.
What DVD player do you have? Most PAL TVs should be able to handle NTSC video, but some DVD players do a crappy looking conversion to PAL when playing NTSC DVDs. I have a JVC player that does this - it looks AWFUL - all jerky and flickery, and there's no way of turning it off! :angry:

Frame rates can be the cause of jerkyt movement, but dodgy DVDs (be it the quality of the media itself or the way it was authored/encoded) can also cause similar problems.

Paulcat
8th June 2005, 13:51
Whether your source is NTSC and you are going to PAL or the other way around, I have had the most success with using TMPGEnc (Qenc is a free mpeg2 encoder, but I don't know what options are available for it...Nick?) and instead of converting the framerate, which screws things up, I do the conversion for the picture size only, i.e. a 720 x 576 PAL video to 720 x 480 NTSC video, still at 25 FPS. THEN I use DGPulldown (www.neuron2.net) to alter the framerate, and then make my dvd, usually with MuxMan.

Changing the flags to alter the framerate gives a much smoother result than encoding, which may duplicate frames, giving the jerky motion, especially in camera panning...

ppera2
8th June 2005, 14:56
While reading this thread (and many others), I can't stand to not say what I think about all such 'developments'....

Thread starter explains briefly his problem, and asks for better programm, because he thinks that it is solution - to put file in some programm, and it will make very quality conversion. But real question is: is such program exists. Is exists at all, regardless of price?

Other problem is way of approach: venomm jumps right into hard task, without trying to understand problem, basics. Probably similar questions he posted in other forums.

Third problem is that often we can see here replies, instructions which are not correct, or at least not offer apropriate solution.

This is sad, and we should think how to solve such situations.
Maybe to add some nice 'smilie' where guy falls because no ground - something in that mean :p

Paulcat
8th June 2005, 21:02
Thank you, "Mug Funky" I will check to see if the 2 framerates coincide - original and conversion - I hope this sorts it all out, then. I have a PAL TV and DVD player and I have tried to make a region-free DVD in the hope this will avoid problems. Like many here, I guess, I am not a techno-wizard and tend to rely on the program I use to just do its job successfully. Problems like this framerate leave me out in the cold. BTW, is it just the frame rate that causes this jerky movement, or will/can it be something else too?
Cheers, V.

Most non-commercial dvd's are region free. The region flag allows a company selling dvd's to limit the distribution to certain areas.

The difference between PAL and NTSC is simple, PAL is a larger picture and it generally runs at 25 frames per second, NTSC is smaller and runs at 23.976 or 29.97 frames per second (for DVD's at least).

If your source AVI is 25 frames per second, it's likely to be from a PAL source. If it's 23.976 or 29.97 it'll be NTSC material UNLESS someone has already mucked about with the file!

If your player can play both PAL and NTSC, just make the dvd to match your source material..

venomm
9th June 2005, 19:03
I am now using virtualdub to analyse the video to find out if it's NTSC or PAL and will try my programme again, but only convert it to a DVD that is the same as the source avi. My standalone DVD player seems to be able to play both regions OK - cheaper players can play nearly anything you put in them now!
ppera2 has hit the nail on the head, I think: I began with one problem/question and asked for a simple solution: is there a program that successfully/faithfully can convert without causing jerky frames and without the user having to constantly adjust settings that are currently a little above his basic knowledge of conversion. I also want to thank all for their helpful replies - am trying to take it all onboard to solve my problem. No success as yet.
V