Smart Prepare

xdcamer wrote on 7/17/2013, 8:23 AM
DVDA has a great feature for DVD where if you change something DVDA uses smart prepare to only save and make the recent changes to a project your have previously compiled.

When can se see a similar feature for Blu-ray .iso Authoring. Currently this feature is not available and if you have to make a small change to a chapter or thumbnail DVDA cannot use smart prepare but has to start from scratch......

Comments

Steve Grisetti wrote on 7/17/2013, 11:41 AM
I'd say the challenge is that, when a program creates a DVD, it creates several little video files -- any one of which can be replaced if needed. But a BluRay ISO is a single file -- very hard to replace just a part of it.
xdcamer wrote on 7/17/2013, 2:03 PM
Yes the iso is a full content but all the prepare files are stored in a temporary folder by DVDA and are used to create the final .iso.

I would have thought that SCS could save these files and allow the project to recall them for use with smart prepare (sure they would take up a lot of space but worth it). Then the temp files would be updated with any changes we make in that DVDA project and the temp files re-used with any updated temp files to compile a new .iso.

This would save a lot of time for us pro's authoring to BD.
PeterDuke wrote on 7/17/2013, 9:37 PM
You should be able to make changes to the menu without redoing the main video(s). In any case, the video should aleady be compliant and only require multiplexing the audio. In my view, DVDA should also accept premultiplexed video and audio, as say TMPGEnc Authoring Works does, thereby doing even less work.
xdcamer wrote on 7/18/2013, 6:59 AM
I think you may be missing the point. All video steams are compliant and audio too but with complex projects with multiply scene selection pages and other menus containing animated thumbnails all this complex data need to be rendered by DVDA.
If I need to change a menu title or chapter point DVDA has to render the whole lot again (not the compliant video streams and ac3 audio).

I had a project recently that took over there hours to render and create the menus & scene selections and compile the .iso. After a simple chapter thumbnail change it had to do it all again.

The same project in DVD format with the smart prepare function would just re author the 'change' and recompile the VIDEO_TS folder in a few minutes.
If DVDA could use the BD Temp files for smart prepare it would cut down on re-authoring data and just concentrate on creating a new .iso from the updated temps.
musicvid10 wrote on 7/18/2013, 9:24 AM
Smart prepare is not available in BluRay projects, for a number of technical reasons having to do with the BD internal structure.

That being said, we may eventually see smart prepare for MPEG-2 BluRay projects (it is certainly feasible), but I would suspect never for AVC BluRay projects. You would need to have some knowledge of the lengthy, complex GOP structure in AVC BluRay to understand why.