Blu ray duration shorter than timeline

[Thevez]

Hi everyone

I have a bluray project that lasts 1:38:24 exactly, consisting only of pictures and music. Quite simple project in fact with 17 chapters

The burd to disk process always completes succesfully but....

The temporary cvtedTitle mpg files shows and plays the correct duration

However during multiplexing of audio and video files, the m2ts resulting file is only 1:04:37 long

Anyone has any ideas as to why the video is shortened like this ?

thanks

[BrianCee]

The difference in your times is almost exactly the difference in rendering a video of around 2474 frames at 25fps and 29.97 fps

have you created a PAL project and then burnt it to Disk as NTSC ?


.......

[Thevez]

Thank you for the quick reply

My project settings were in fact at 25 fps.

I changed that but.....

Now the resulting time for the output m2ts is now 1:11:59

the temporary mpg file in the CvtedTitle directory is still 1:38:24

I have lots of hard disk space but only 4Mb of ram in my computer ( windows 7 pro. x32 )

any new ideas ?

[Ken Berry]

Instead of going directly from the editing module with the project in the timeline to burn a disc, have you tried first going to Share and converting your project into a Blu-Ray compatible video: Share > AVCHD or Share > MPEG-2 (choosing in the latter one of the Blu-Ray options -- 1920 x 1080 or 1440 x 1080)? This should give you the right length which you can check on.

When satisfied you can then go to Share > Blu-Ray. If there is anything in the burning module timeline when it opens, delete it, and go to the Add Media > Add Video Files button in the top left of the burning screen and add your new video. Make sure that "Do not convert compliant MPEG files" in the Project Settings icon in the bottom left of screen is ticked -- though it normally is by default. Build your menu and burn. This time you should get the correct length.

If you don't want to waste a disc, you could first "burn" to an ISO file which you can play in a software player like VLC (free). When satisfied you can then go to Tools > Burn from disc image (ISO) to burn an actual disc.

[Thevez]

Hi Ken,
I am not trying to burn to disc at this point. Just trying to Create the bluray folder. Not Create to disk and not Create iso image.
The mpg file that is created by the encoder is perfect. I found That file in the CvtedTitle folder. I played that file with VLC and it is complete with sound , image, fps, and duration.
Where the problem occurs is when VS converts that file to m2ts format to be put in the BDMV\STREAM subfolder.

I even created a new project, with no menus or chapters, with the earlier temporary mpg that i talked about before, as only video.
I then proceeded to Share and Create folders. Well the same result happened ! Instead of 1:38:24, i got a m2ts stream of 1:11:59

can a project get more simple than that ?
thanks for your continuing help

[canuck]

Why are you first converting to mpg and then convert that file to m2ts? Why not go directly to m2ts? All you are doing is losing quality when going to mpg and then "expand" to m2ts.

[Thevez]

Hi Canuck
My project consists of photos, overlay texts and mp3 music only.
Creating an intermediary mpg file seem to be a step that VideoStudio uses to "join" all those medias during the the title conversion step.
I dont know how i could bypass that step in VideoStudio.
I think My problem lies with the BluRay module I had to buy from corel to be able to produce bd content.

[Ken Berry]

The mpg file that is created by the encoder is perfect. I found That file in the CvtedTitle folder.

This is where you are making a mistake. That file is created during the "burning" (or Sharing, if you like) process. (We call it burning whether you are creating an actual disc or a DVD/Blu-Ray folder or ISO -- because the folder or ISO will in effect have a structure identical to the final disc.)

If you look at my outlined workflow above, you will first create a real and new .m2ts at the end of the editing process, before you move on to the "burning" process. And when you do start the latter, you use the new .m2ts file instead of the project file as you are currently doing. There will be no "Converting Title" during the "burning process" (with "Title" in video-speak in this case meaning your main video, not just the words in a clip giving a name to your video). That has already been done and the .m2ts is already disc-compatible. So the "burning" process will be that much quicker -- and correct.

Don't get me wrong -- the workflow you are using should work, but sometimes (often?) it does not and for no obvious reason. Some of us have found that breaking up the whole process into individual steps usually fixes things.

[Thevez]

Hi Ken,
I will try your solution right away.
Maybe letting VS do everything in one step is the wrong way to go finally
First step : create an mpg2 file with the share menu
Second step : add this newly created mpg2 file to a clean new timeline
Third step : recreate menus ( for the hundreth time ! )
Fourth step : generate bd content with ( hopefully ! ) no reencoding
Fifth step : Drink a beer in your honor !

Later for results......
Thanks

[Ken Berry]

That's it!!! As long as, in the second step, you mean a clean new timeline in the Burning module, not in the editing module...

Mind you, when you have produced your new .m2ts in the Editing module, you still have your project in the Editing timeline. If that is still there when you open the Burning module, the project (not the video) will appear in the Burning timeline. That is what I meant when I said if there is anything in the Burning timeline, delete it, and go to Add Media to insert your new m2ts. Another way of ensuring the Burning timeline is empty is back in the Editing module. You go to File > New Project. Don't worry about giving it a name -- the objective is simply to clear the existing project from the timeline, which starting a New Project achieves...

[Thevez]

Hi Ken
Well I owe you a beer.... or twelve !
Your method worked on the first try
Only downside ( minimal as it is ) was I had to recreate the menus but ...

Now thanks to you i have a reliable working method of producing bd videos.
I can now start working on my wedding videos..... now that the wedding pictures part is done

Once again, many thanks to all !

[Thevez]

Hi again Ken,
On that same subject, can you do a quick roundup of which formats would be "compliant mpeg files" for bluray and dvd ? mpeg2 mpg4 or avchd and which resolutions ?

thanks again