Help! Finished project, produced ISO but Video jerky

thegasgranny · Post by **thegasgranny** » Tue Oct 16, 2007 11:32 am

Hi

I'm a bit confused about this. I have spent nearly 30 hours producing my friends wedding video just to find that after I render it and play it on my DVD player, it's jerky. Yet when i view the video within VS10, it looks fine ??

When I render the movie (as an ISO) I made sure my anti virus was disabled and my working and output drives are different physical disks - 300Gb 7200rmp IDE with cache disabled and 300Gb SATA respectively.

My machine is a little old but should still be fast enough to do the job. It's an AMD XP3200 with 1Gb DDR400 ram.

I really don't want to lose everything I've done. Can anyone help?

Many thanks.

TGG.

Post by **lancecarr** » Tue Oct 16, 2007 11:56 am

Ok here are some possibilities:

That particular DVD player has a problem playing burned discs. Or does not like -R or +R discs. Try another player.

The bitrate you burned at was too high. Anything above 9800kbs may cause a DVD player to stutter or choke because the disc is burned and not pressed like a commercial disc.

The disc was burned at the maximum burn speed and has resulted in a glitchy burn that the player is having trouble with. The recommendation is that if the disc supposedly writes at 8x then burn at 4X, 16x=8x.

Someone else will come up with some more for you.

Clevo · Post by **Clevo** » Tue Oct 16, 2007 12:15 pm

some more possibilities:

TV monitors are very Field Order sensitive.

Well need the video file properties and also the Project Properties.

I had a similar problem with one of my projects it played fine on my PC and TV plasma monitor but didn't look good on my old CRT monitor (which is a 20 year old TV).

I double checked my project properties and noticed I had burned in frame base rather than LLF (lower field first). It then looked good on all monitors I tested it on (slight interlacing issue on the old CRT TV).

If you have saved your project you will not have lost all your editing hard work.

thegasgranny · Post by **thegasgranny** » Tue Oct 16, 2007 12:32 pm

Many Thanks!

I'll post again later tonight (I'm at work at the moment) when i can check my settings (bit rate, project settings etc.) Should I always use LLF if I'm producing DVD's to play on CRT TV's?

I did used a DVD +RW burnt at 4x (Max) because I didn't want to waste disks for a first proof. I guess this won't help matters

I'm very greatfull for your replies!

Cheers

TGG.

Black Lab · Post by **Black Lab** » Tue Oct 16, 2007 12:46 pm

Should I always use LLF if I'm producing DVD's to play on CRT TV's?

It depends on your source material. If your source is a mini-dv or digital 8 camcorder, then your field order is almost always LFF. If your source is analog, or from a hard disc camcorder, then your field order is almost always UFF.

Post by **Ken Berry** » Tue Oct 16, 2007 12:50 pm

Should I always use LLF if I'm producing DVD's to play on CRT TV's?

Short answer: no. It will always depend on what the source of your video was. If it came from a mini DV camera, then yes, it should always be LFF throughout the entire project because mini DV cameras use LFF. But mini DVD cameras, for instance, and most hard disk cameras of which I am aware use upper field first, the exact opposite.

So you have to be aware of what field order your camera uses and then use that throughout the project. And never mix UFF and LFF video in a single project. You can mix either UFF or LFF AND frame based video, but that is all.

thegasgranny · Post by **thegasgranny** » Tue Oct 16, 2007 1:06 pm

Hello again!

The source was a Sony Mini DV camera captured as AVI.

Thanks again for the support.

TGG.

thegasgranny · Post by **thegasgranny** » Tue Oct 16, 2007 9:48 pm

Hello!

There were some differences in the settings but I have set them to:

Project Template Properties
--------------------------------

PAL (25 fps)
MPEG files
24 bits, 720 x 576, 25 fps
Lower Field First
(DVD-PAL), 4:3
Video data rate: Variable (Max. 8000 kbps)
Audio data rate: 128 kbps
MPEG audio layer 2, 48 KHz, Stereo

MPEG Properties For File Conversion
-----------------------------------------
MPEG files
24 bits, 720 x 576, 25 fps
Lower Field First
(DVD-PAL), 4:3
Video data rate: Variable (Max. 2500 kbps)
Audio data rate: 128 kbps
MPEG audio layer 2, 48 KHz, Stereo

Should I use square pixel rendering ???

Many Thanks

TGG.

Post by **lancecarr** » Wed Oct 17, 2007 12:13 am

Am I reading this correctly?
You started with DV AVI from the cam and then ultimatley dropped it down to:
"Video data rate: Variable (Max. 2500 kbps)"

That is a very low bitrate and would result in pretty poor playback.
The project properties of 8000kbs are correct.

heinz-oz · Post by **heinz-oz** » Wed Oct 17, 2007 2:13 am

I would have my project settings at DV-AVI, not mpeg2, and create a final DVD compliant mpeg file after all my edits are done and at a bitrate high enough to give me the best quality but to fit on a standard DVD disk but certainly not below about 4,500 kbps.

How long is the video in minutes?

thegasgranny · Post by **thegasgranny** » Wed Oct 17, 2007 9:07 am

Oops.. the bit rate was set to 2500 but I changed it to 8000

Is it too late to change the project settings after the video has been captured?

The video is 68 minutes long.

I left it rendering last night before I went to bed so I don't know what the outcome is yet until I get home tonight when i can burn the ISO to disk.

I'll post my findings.

Thanks again for the replies

TGG.

Clevo · Post by **Clevo** » Wed Oct 17, 2007 11:00 am

Can I ask why you are going to an .iso file? I presume it's because you want to make multiple copies? How many?

thegasgranny · Post by **thegasgranny** » Wed Oct 17, 2007 11:20 am

Hi Clevo,

Yep I'll be making multiple copies. It's a wedding video so I guess 5 or more. I understood that outputting the video to a file was the right thing to do. What would you suggest?

Cheers.

TGG.

heinz-oz · Post by **heinz-oz** » Wed Oct 17, 2007 11:23 am

What did you capture to and how were the devices connected?

thegasgranny · Post by **thegasgranny** » Wed Oct 17, 2007 11:32 am

Hi Heize-Oz,

I captured to AVI from my Mini DV camera connected via firewire.

Cheers.

TGG.