JERKY PLAYBACK (NOT fps conversion problem!) with TmpgEnc!

[l2oBiN_Ho0D]

hi guys, ive been cnverting movies for quite some time using tmpgenc for svcd but have moved on lately to dvd. ANYWAY, my problem being is, on conversion of avi file to mpeg i play the movie file but playback seems jerky ( both on comp and tv) it looks like the picture lags (or freezes) every 3 secs of so for a split second and then catches up. (if you know what i mean). I know its not a problem with conversion (im converting from 23.976 ->25 fps) and i use virtualdub for vid and besweet for sound. ive never had problems before! (with svcd anyway). I use tmpgenc under low resolution dvd pal and use seperate audio and video streams. i tried both vbr and cbr and i keep aspect ratio to 'full screen keep aspect ratio) as im fitting 2 movies on 1 dvd my avg bitrate is approx 1900, i use mpeg audio2 layer (as opposed to linear cpm).

that is pretty much all the setting i use. i JUST cant figure it out! does anyone else have this problem or better still does anyone else have a solution? THNX in advance!

[FulciLives]

Well sounds like frame rate conversion problems despite you saying otherwise. How exactly are you converting the 23.976fps NTSC to PAL? You might be doing it wrong so if you could give details we could either solve the problem (if that IS the problem) or at least eliminate it from the equation.

But it sure sounds like frame rate conversion issues to me.

- John "FulciLives" Coleman

[l2oBiN_Ho0D]

im using simple virtualdub method (direct stream copy convert to 25fps under frame rate)(and obviously dont save sound) worked fine before for svcd

[FulciLives]

im using simple virtualdub method (direct stream copy convert to 25fps under frame rate)(and obviously dont save sound) worked fine before for svcd

Well assuming the AVI is progressive 23.976fps NTSC (and not 29.970fps NTSC) then try this ...

Load the AVI directly into TMPGEnc but select a PAL template and on the ADVANCED TAB check mark the option called DO NOT FRAME RATE CONVERSION.

Sound will still have to be done seperately in BeSweet using the PRE-SET NTSC 23.976fps ---> PAL 25.000fps option so be sure to select ELEMENTRY STEAMS in TMPGEnc as the audio it creates will be worthless using this method.

- John "FulciLives" Coleman

[FulciLives]

Another method which will also convert the audio (assuming the audio in the original AVI is something TMPGEnc can handle such as CBR MP3) is to use an AviSynth AVS script:

LoadPlugin("mpeg2dec3.dll")
AVISource("D:\movie.avi")
LanczosResize(720,576)
AssumeFPS(25.000, true)

Of course your resizing values for the height may be different if the original AVI is widescreen with the black cut off.

Anyways when you use this method TMPGEnc will see the AVI as a PAL source so you just encode it as you would another PAL AVI (and you do NOT checkmark the DO NOT FRAMERATE CONVERSION option).

- John "FulciLives" Coleman

P.S.
Check out a program called FitCD which will help you to set-up the AviSynth AVS script correctly including the all important resizing values.

[l2oBiN_Ho0D]

ok.. im giving it a try tonight and ill tell you how it goes. THANX D00D :P

[FulciLives]

One last post that might help you out ...

Configuring TMPGEnc for high-quality, DVD-compliant MPEG-2
http://dvd-hq.info/Compression.html?PHPSESSID=9be7932ad3767785427cbdd5ae727a34

This is a LINK and the name of the link pretty much says it all.

Good Luck!

- John "FulciLives" Coleman

*** EDIT ***
Sorry had trouble getting the link to work correctly but it is now!

[l2oBiN_Ho0D]

woa dude. im trying to do the video according to that "setting the max quality for movie" and it will take 5HRS to make video only.. farrrrrrkk.. oh well gotta try it

[FulciLives]

woa dude. im trying to do the video according to that "setting the max quality for movie" and it will take 5HRS to make video only.. farrrrrrkk.. oh well gotta try it

With my old computer a 2-pass VBR in TMPGEnc would take 48 hours so 5 hours ain't shit hehehe

- John "FulciLives" Coleman

[l2oBiN_Ho0D]

d00d, ive finshed encoding ( doing both the best conversion one and your method)and the jerkyness is MAXXXEDDD out! (using original source of 23.976fps) i dont know why its doing it with the converted (25fps) source as when i view the 25fps source (i made with virtualdub) it seems to run fine (no jerkyness) but when i encode it goes jerky.....

argh, very frustrating! can anyone help out?

[FulciLives]

d00d, ive finshed encoding ( doing both the best conversion one and your method)and the jerkyness is MAXXXEDDD out! (using original source of 23.976fps) i dont know why its doing it with the converted (25fps) source as when i view the 25fps source (i made with virtualdub) it seems to run fine (no jerkyness) but when i encode it goes jerky.....

argh, very frustrating! can anyone help out?

Well that is rather odd.

What settings (in detail) did you use in TMPGEnc. Either your settings are wrong or maybe the source is the problem (bad frames maybe).

- John "FulciLives" Coleman

[l2oBiN_Ho0D]

source isnt a problem... im 100% sure as it happens to every movie i encode. i use the project wizard, i choose pal (low res) dvd with mpeg1 layer 2 sound. on next screen i just input my video/audio (dont change anything), next screen i choose 'other settings' and change 'video arrange method to "full screen keep aspect ratio" and either leave cbr or 2pass vbr' then i set file size to 2200 megs (fit 2 movies on dvd) and i encode (if i do both audio and video seperate or together doesent make difference, i still get the jerky frame every 2-3 secs). it used to happen to me when i made svcd with multiple parts (2-3 cds) in a que from 1 source (i que my tasks and leave em running overnight) ive found that splitting the source to each seperate cd did the trick for me (no more jerkyness ) for svcd. BUT as im making dvd i dont want the split source,i want 1 large file and thats when the problem occurs! when the large file is made jerkyness occurs. i dont know if its a thing with my comp or tmpgenc. my computer should be able to handle it!
(amdxp2000 , 512ddr, geforceti4600) so im fresh outta ideas.

as i said after i convert the source avi in virtadub to 25fps and watch it through wmp its runs fine, but after encoding the avi (already converted to 25ps before encoding) i get this jerky frame every 2-3 secs

its weird its frustrating and i dont know what to do to fix it!

(im thinking about converting small protions and then joining them together as this will solve my problem but thats a pain in the assssssss...

[FulciLives]

Well the only thing I can think of that might be the problem is that you are using the PAL low resolution template which has a resolution of 352x288 (the same as VCD) and this could be the problem.

Even if it is NOT the problem STOP THAT. VCD resolution (even at high bitrate MPEG-2) is SHIT looking.

At the very least do Half D1 resolution (352x576) although you probably won't be able to get 2 movies on one DVD that way unless they are both VERY short (like 90 minutes or less).

Does this happen (the jerky playback) even when you encode PAL AVI to PAL MPEG-2 or just when you try to do NTSC AVI to PAL MPEG-2?

- John "FulciLives" Coleman

[l2oBiN_Ho0D]

happens when im encoding pal avi as well (when i dont do framerate conversion)
weird ey?

[FulciLives]

happens when im encoding pal avi as well (when i dont do framerate conversion)
weird ey?

Yeah doesn't sound "right" to me. Not sure what the problem is. Maybe try to upgrade to the newest version of TMPGEnc or try CCE BASIC.

- John "FulciLives" Coleman

[l2oBiN_Ho0D]

already have latest verion of tmpgenc, i guess ill just haveto try cce...