[Dave Fromme]

Thanks Matt.

[Dave Fromme]

Dave

Many thanks for your reply and all the pointers in the right direction… especially the one about labelling the disk as a replication image rather than DVD master. I could just see that happening!!

A follow-up question if I may… is there any way to check the Replication Image disk before sending it to the replication company? Or do I have to keep my fingers crossed that the Image is OK and the disks produced from the Replication Image will work.

Thanks
Dave

[Dave Fromme]

Sorry Guys. Somehow I’ve mis-posted… https://forums.creativecow.net/readpost/24/900939

Thanks Jay, Stephen, Dave and Ben for your replies.

Jay: DVD Aspect ratio is 4:3, anamorphic can have a DAR of 16:9.

Sorry, your comment is a little over my head. I’m rendering/encoding/compressing using MPEG-2 16:9 in Vegas; dropping the resulting file into DVDA where the ‘Make DVD’ settings are also 16:9. I just don’t understand why DVDA needs to do anything to an MPEG-2 compliant file.

Stephen: Is there a reason that you need the video media in separate files? Try making a single MPG/AC3 set. I suspect that this is your problem.

I used a single MPEG-2/AC3 file originally and was advised to try separate MPEG-2 and AC3 files.

Stephen: BTW, you don’t “render” MPG and AC3, they are encoded, notwithstanding that Vegas puts both render and compression tools in the “render as” menu.

Thanks.

Ben: I have used the render to DVDA file in the MPEG2 options and found this to give the second best visual results. Actually I was doing things that way for years until “working in the lab, late one night, my eyes beheld a mysterious sight”… and I accidentally dropped an .avi file into DVDA.

“Bu%%er”, I thought. “It will take ages” especially after the accidental render to .avi was pretty fast. The time taken wasnt much different from the MPEG2 render… and then I noticed the crisper vision. So now my workflow has changed. Clicking on the “interleave every frame” ensures fx such as glint and light rays are smooth, and Vegas does not have to recompress any of the existing .avi files on the timeline.

Ditto! But the resulting rendered/encoded file is far too large. I feel I need to get to the bottom of why MPEG-2 is causing me problems.

Dave: Get back into DVDA, with all of your clips as before.

Go to the “File/Optimize Disc…” dialog. Presumably, you see check marks next to the audio, signs next to the video, as before.

Check the global settings, over on the right in that dialog. It should say something like:

Disc format: DVD
Video: MPEG-2, 16:9, 720×576 (PAL), 25
Audio: AC-3 Stereo, 192kbps

The above checks out.

Dave: Next, select your first video clip. Click the “Video 1” tab over on the right, look where is says “Recompress Required”, and expand that. Below it’ll give you “Reasons for required recompression”. For example, if I put a 24p progressive (NTSCfilm) video into just such a PAL project, DVDA will tell me here, “NTSC Media is incompatible with PAL project”.

Ah ha! The ‘Reasons for required compression’ are…

a) Six videos say – Reduce interlace flicker is on
(I had been advised to use this where the screen has text.)

b) The main menu, which has a video background, says Asset contains composited graphics and Reduce interlace flicker is on

c) Then I have three menus that have a png file file as a background. These are used as a kind of information page which the viewer can read. They only have a ‘Main Menu’ link. The ‘Reasons for required compression’ are Media is not compliant with the disc format, Video format doesn’t match project, and Asset contains composited graphics

Thanks Dave! At least I’ve got some reasons now as to why DVDA is re-compressing the files. I just need to understand what the reasons mean and what action to take!!

[Dave Fromme]

Hi Guys

Many thanks Jay, John and Dave for your replies. Confusion reigns!!

I’ve taken what has been said and done another experiment.

I rendered my files in Vegas as follows:
– File > Render as…
File name: myfile01.mpg
Save as type: MainConcept MPEG-2
Template: DVD Architect PAL Widescreen video stream
Description: Video: 25 fps, 720×576 Use this setting to create a PAL Widescreen video-only MPEG-2 file compatible with DVD Architect.

– File > Render as…
File name: myfile01.ac3
Save as type: Dolby Digital AC-3 Studio
Template: Stereo DVD
Description: Audio: 192 Kbps, 48,000 Hz, Stereo, Automatic Gain Control off.
Use this setting for stereo DVD soundtracks.

Each track was named differently with the video/audio being named the same but with different extensions (.mpg and .ac3)
There are seven video files ranging from ten seconds to eight minutes in length. The sizes of these files vary, when rendered, from 2MB to 386MB. The total size of all the files does not exceed 700MB.

The above video and audio tracks are imported into DVDA. DVDA’s settings are:
Disc format: 4.70
Video format: MPEG-2
Bit rate (Mps): 8.000
Aspect ratio: 16:9
Resolution 720×576 (PAL)
Frame rate: 25

Audio format: AC-3 Stereo
Bit rate (Kbps): 192

When I click “Make DVD” and check the above settings, DVDA *still* gives a warning that all seven video tracks will be recompressed, not the audio tracks, just the video tracks. If I’ve rendered the files in Vegas in the required MPEG-2 and AC-3 format, why does DVDA want to recompress the video files? Aaaargh!

What am I missing?

[Dave Fromme]

Hi Jay

Thanks for the reply.

.mts means mpeg transport stream. When DVDA opens it up and finds AVC in there, it freaks out, and tries to transcode it.

The .mts file doesn’t get near DVDA. I import the .mts file into Vegas and edit it without any problems. I then want to render the result in Vegas ready for DVDA.

But your computer can’t process it fast enough to maintain the burn rate.

I haven’t experienced any problems with burn rate. My questions are around the best rendering format in Vegas to avoid the issues explained in my first post.