problems with "Do not convert compliant MPEG files"

[rossez]

Hi,

I have used VS8 and then VS9 with good success and now I am trying VS10 (trial). I have a single MPEG2 file captured from my TV card with following properties:

MPEG-2 Video, Upper Field First
24 bits, 720 x 576, 25 fps
(DVD-PAL), 4:3
Video data rate: Variable (Max. 6000 kbps)
Audio data rate: 224 kbps
MPEG audio layer 2, 48 KHz, 16 Bit, Stereo

In VS8 and VS9 I used to set exactly the same output format for creating a DVD disc and checked the "Do not convert compliant MPEG files" option. It worked well, it did't convert the MPEG again and the creation of DVD was quite fast (about 20 minutes for 90 minutes movie).

But in VS10 this doesn't work for me. Even when I set exactly the same output parameters it allways covert the movie again resulting in a loss of quality and very long converting time. I tried "Create Video File" with the option "Same as first video clip" and there was no converting, it was finished very fast and with no quality loss. But when I create a disc, it does'n work.

Does anyone has any idea where could be the problem?

Thanks a lot.

[Ron P.]

Are you going into the burn module with your video/project in the timeline? It would seem that is what's happening. In the burn module, it is going to use your project file, and thus convert it to a video file.

Once you are done editing, do as you have done, Share>Create Video file, same as project settings. Then click on File>New Project. Then without placing anything in the timeline go to Share>Create Disk. Then insert the newly created MPEG-2 video file. After building your menus, and having the "Do Not Convert..." box checked it should not recode your video file. It will have to convert your titles (menus) to video, but not your videos.

[rossez]

Thanks Ron, it works the way you suggested.

I just wonder why I have to make final video file first, then remove it from timeline and only then creating disk with the option "Do Not Convert..." works. In VS8 and VS9 this could be done easily in one step just by Share>Create Disk. There was no recoding even when multiple files were in a timeline.

But anyway, thanks a lot.

[sjj1805]

Thanks Ron, it works the way you suggested.

I just wonder why I have to make final video file first, then remove it from timeline and only then creating disk with the option "Do Not Convert..." works. In VS8 and VS9 this could be done easily in one step just by Share>Create Disk. There was no recoding even when multiple files were in a timeline.

But anyway, thanks a lot.

Technically you don't. However please read my post
Suggested Workflow and hopefully it will become clear that there are benefits to be gained by creating a separate video file first that contains all of your editing.

[rossez]

Thanks for your reply Steve.

My only "problem" was with the fact that VS10 works in my partcular case different (worse) way than VS8 and VS9.

What I do with video is capture movies with my TV card in MPEG-2 format which in case of approx 90 min movies fits well on a DVD and doesn't need any recoding at all. So what I do is cut out beginning, all the ads and end and make the iso for burning. When the movie is cca 90 min long I do not need any recoding. I use the "Do Not Convert..." option.

And that is the point of my original question. In VS10 when I go instantly from "edit" to "share -> create disk" and set exactly the same output parameters as the original source and check the "Do Not Convert..." option it for some unknown reason recode the video again. This works in VS8 and VS9 well without recoding but not in VS10.

Technically you don't.

So in VS10 it seems that I have to make final single video file first to avoid recoding.

I can see your point why it is generally better to make final single video first, in my case of simple editing (just cutting, no effects, no titles, no menu) the way how VS8 and VS9 works is more straightforward.

[Ron P.]

This is somewhat puzzling. The "Do Not Convert", should behave the same in any of the versions. If it did not recode your video files in VS8 & VS9, then it should not with VS10, or vice-versa it should have in the earlier versions.

What I do with video is capture movies with my TV card in MPEG-2 format which in case of approx 90 min movies fits well on a DVD and doesn't need any recoding at all.

"Movies", as in several small movie clips or one continuous clip? The reason for the question is that if any one of the clips are not "DVD Compliant", then VS will recode it so that it is.

Since everything in the Project Timeline is just a thumbnail link to the respective video clips, ie; a set of instructions, in order to have something to place onto a DVD, VS needs to create that from the instructions you provided. This is done in either the Share>Create Video File step or during the burn. If done during the burn then it is having to create a "temp" video file, while also creating the VOB, BUP, IFO, Menus, etc, on the fly. This may slow things down a bit, and may cause problems if your PC seems to not keep up.

If you take a DVD Compliant video file, and cut it up, then go to burn it to disc, it will still need to have the parts of it recoded where the cuts were made, in other words, "spliced" like placing tape across the spliced pieces, while it should not recode the entire video.

So VS10 should not recode the entire video, just like the earlier versions, but still needs to create a video file prior to burning, just like the earlier versions. Why it seems to do differently is got me stumped at this point...