Jittery Playback

[jimhaddon]

I have Divx and Xvid videos i have converted to VCD using TMPeg or wateva. And when i play them back, for some reason every about 1 second, the pictures jitters. Anyone else got this problem? or know how to fix it?
THanx, James

[setarip]

"converted to VCD using TMPeg or wateva."

The details you've provided regarding software, procedures, and settings are underwhelming ;>}

Be that as it may, assuming you're referring to playback on a standalone DVD player (The ONLY reason to create VCDs) - make certain that you've created the VCD with audio at 44,100Hz (NOT 48,000Hz).

You also might try using a different brand of CD-R.

Have you previously created VCDs that DID playback properly on your standalone DVD player?

[jimhaddon]

Sorry about my level of detail. I have some more if u'd like. I use TMPGEnc to encode the divx/xvid files to MPEG1. Then, if I need to, split them also using TMPGEnc. I play them on a standalone DVD player yeah. The strange thing is, is that the audio is at 44100, and some movies don't jitter, but most do. I think i found the problem though. I was converting the FPS to 25FPS. Could this be why?
THanks,
James

[setarip]

"I was converting the FPS to 25FPS. Could this be why?"

Yes...

Try setting TMPGEnc to all available PAL settings under both "Video" and "Advanced" if this is what you're trying to accomplish.

But, before doing what I've just described, try making a VCD without altering settings and without changing the framerate. See if you standalone has the capability of automatically adjusting for NTSC format...

[jimhaddon]

yeah already done that, thats y i sed i think iv done it. It works, so problem solved. Thanks anyway!
James

[setarip]

"Thanks anyway!"

My pleasure ;>}

[I26]

Originally posted by setarip
"converted to VCD using TMPeg or wateva."

The details you've provided regarding software, procedures, and settings are underwhelming ;>}

Be that as it may, assuming you're referring to playback on a standalone DVD player (The ONLY reason to create VCDs) - make certain that you've created the VCD with audio at 44,100Hz (NOT 48,000Hz).

You also might try using a different brand of CD-R.

Have you previously created VCDs that DID playback properly on your standalone DVD player?

If I may ask why 44,100 not 48,000? I have been doing them w/48,000 and they work fine. Can u explain? Thanx.

[Batman]

While many standalone dvd players are able to playback 48 khz audio, not all are. Downsampling to 44.1 Khz audio is part of the VCD standard and can alleviate jerkiness etc...

[I26]

Ok....thanx. I usually go to a DIVX first then to a VCD conversion. I usually keep DivX at 48k using FLASK. I guess when i use TMPGenc to do the VCD i should change audio to 224kbits/sec and to 44100Hz correct? What stream type though? MPEG-1 Audio Layer I or II?
I could just downsample to 44k in Flask. I use VCDEasy to do the chapters but always get those pesky APS errors. It doesn't seem to affect them. Any ideas on that as well. Thanx for the help....its greatly appreciated!!!!!!

[Batman]

If 48 kHz audio works fine for you, there is no need to downsample to 44.1 kHz

[I26]

Originally posted by Batman
If 48 kHz audio works fine for you, there is no need to downsample to 44.1 kHz

I assume players made from now on will support 48k?

[Batman]

It depends on the player. There are many players that support 48 kHZ audio, but not all.

Check out vcdhelp.com for more details on standalone dvd players.