Trim Video Problems

bdbssb · Post by **bdbssb** » Tue Feb 21, 2006 3:08 pm

I am editing an mpeg-2 (VS9)in time line view. When I get to a frame that I want to insert a cut I am having issues with the video. For example if I go from 01:25:25 to 01:25:26 back and forth I am consistantly getting different preview frames. This is not happening in every spot of the video however where ever I want to put my cut.

maddrummer3301 · Post by **maddrummer3301** » Tue Feb 21, 2006 5:38 pm

Hi,
That's because the program is seeking to "KeyFrames".

If you were working with DV video instead of mpg video you wouldn't have this problem because DV video is true frame by frame editing.

Whenever you record the source video material always set GOP's to ON because you plan to edit the video.

You can mark about a 1 minute part of the mpg video and export it out to a DV.avi file and work on that section in DV.avi format. Then bring that editing back into the original mpeg2 file and overlay it 100% or split & merge back. (A few ways could be used).

Hope this helps,

MD

bdbssb · Post by **bdbssb** » Tue Feb 21, 2006 8:54 pm

I am using a ati 9600 all in wonder to do the video capturing so i will check out my options for recording i have never seen gop. The next question is, will it take forever to render if i record in DV and want to put the video on a dvd? All and any help is very appreciated.

GuyL · Post by **GuyL** » Tue Feb 21, 2006 11:39 pm

Yes, there is an option in ATI's multimedia center for enabling GOP. This is only when caputuring MPEG. However, it is recommended if you are doing any editing to use AVI/DV capturing.

Post by **Ken Berry** » Tue Feb 21, 2006 11:55 pm

As for rendering time, yes it will take some time to render your edited DV/AVI to a DVD-compatible mpeg-2. The render time varies according to the resources of your computer, and I would say that with your AMD 4000, and 2 GB RAM, you should get pretty quick renders: anything between real time (i.e. 1 hour of video will take 1 hour to render) to, say, 1.5 x real time.

But it is time well worth spent. Capturing direct to mpeg-2 might save this rendering time, but a lot of people have difficulties in editing mpeg-2 extensively, and a common problem which arises is out of sync audio and video when they do.

The other thing is, if you are capturing and editing in DV format, first produce the DVD-compatible mpeg-2 file (Share > Create Video File > DVD). Do NOT go straight from a DV project in the timeline to burn it to disc (i.e. Share > Create Disc > DVD). This will lead to further problems in most cases. Only burn once you have your DVD-compatible mpeg-2. But be sure to check the 'do not convert compliant mpegs' box in the little cogwheel icon in the bottom left of the burning module page. This will avoid a further render.

bdbssb · Post by **bdbssb** » Wed Feb 22, 2006 3:16 am

Ok, i did find the gop option in the mpeg. I also have the option of capturing in avi. However what kind of settings should i use for the avi. For example i know that normal dvd(mpeg 2) is i believe 720x480. I know this is a VS forum however if i start with the wrong file i will be in trouble to begin with. I am able to change several settings in my capturing. Any and all help will be appreciated.

maddrummer3301 · Post by **maddrummer3301** » Wed Feb 22, 2006 5:14 am

The ATI AIW9600 card captures best to mpeg2 format.
Create a custom template in the ATI recorder and make sure to select DVD. GOP = Yes/On, P=4, B=2.

You can try to capture DV.avi Type1 and have the analog card convert the video from analog to DV but I think you will drop frames when doing this. DV is also very compressed. ATI cards hardware chipsets are made for mpeg compression.

MD

bdbssb · Post by **bdbssb** » Wed Feb 22, 2006 5:19 am

Ok I will try the gop settings.

GuyL · Post by **GuyL** » Wed Feb 22, 2006 11:44 am

bdbssb wrote:Ok, i did find the gop option in the mpeg. I also have the option of capturing in avi. However what kind of settings should i use for the avi. For example i know that normal dvd(mpeg 2) is i believe 720x480. I know this is a VS forum however if i start with the wrong file i will be in trouble to begin with. I am able to change several settings in my capturing. Any and all help will be appreciated.

If you are capturing with an All In Wonder, here is a great guideline: http://www.digitalfaq.com/dvdguides/capture/index.htm.

bdbssb · Post by **bdbssb** » Fri Feb 24, 2006 3:22 pm

Thank you for all the help. I did go to the site that contained ATI info. It was very helpful. Now i am actually experimenting between using vs9's software or ATI's software to do the capturing. Vs9 actually has some extra choices in audio however i dont see a gop option for dvd capture. Avi video was going to use a little more space than i could afford on my hard drive. I wasn't even able to capture an hour of video. All i use that computer for is capturing and then move to another computer for editing. The capture computer only has a 40 gig hdd.

GuyL · Post by **GuyL** » Fri Feb 24, 2006 3:46 pm

If you are going to capture in AVI you need ample hard drive space. If you can't provide the hard drive space required then MPEG is the only way to go unless you can do portions of your project at a time with separate captures.