Blu rays from previous videos

Jerfilm wrote on 4/27/2009, 9:25 AM
I'm not very technical. Here's my question: I have a bunch of HD videos that I want to now burn on blu ray discs. For some of them I have the original clips from the camera and that will be a relatively easy matter to reload the original veg file and re-render for blu ray. But for some, I don't have the originals anymore. But I do have the m2t renderings that I did for DVD Architect , rendered using the NTSC Widescreen for DVD Architect mode. Can I load these as a new project and re-render them for blu ray? Or are they already in a less than HD format? Or, if they're in an HD format now, can I just load them into DVDa and burn them to blu rays? Help......

Jerry Rutledge
Minnesota

Comments

busterkeaton wrote on 4/27/2009, 9:40 AM
When you took your files and rendered them as DVDs you automatically converted HD footage to SD, that is, standard defnition footage, so you lost information going form HD to SW and there is no way get those pixels back.

Also, the video format of a DVD is mpeg-2 which is lossy, compressed format. This means, in order to save enough space to fit on a DVD, your camera original file is compressed to save space. Lossy means some of the information is thrown away to save this space. Rerendering from a lossy rendered format, means you will lose quality each time you do it. If you are familiar with audio mp3s, going from CD to mp3 usually sounds fine. If you go from mp3 to mp3 to mp3, that third generation is going to sound poor.
Jerfilm wrote on 4/27/2009, 11:28 AM
So, in other words, I have to have the original clips as they were downloaded from the camera??
DGates wrote on 4/27/2009, 11:46 AM
Yep.
gogiants wrote on 4/27/2009, 2:14 PM
The advice thus far has been great, but it might be worth clarifying something real quick...

You mention that the files you have are m2t files. I may be off, but I don't think that file extension is typical for a standard def MPEG-2 file. One quick thing you can do is to open up vegas and navigate to the file(s) in question. Then just single click on them and look at the "status bar" on the bottom left of the vegas window... you should see some file information on the file format, things like resolution, etc. Do that and let the folks here know what you see and that would settle it...