I have some 30p media (high frame rate RED Epic footage shot at a timebase of 29.97) which I placed in a 1080 30p Vegas project with lots of velocity envelopes and Boris RED effects applied to the clips. This is meant to be used as a menu on a Bluray project. Because of the extreme dynamic playback rate resulting from the velocity envelopes, and to avoid artificial motion blur, I disabled resample on ALL events in the timeline.
Things look great in Vegas and on a straight 30p output file played in a computer media player. But then I found out to my surprise that 1080 30p is not officially part of the Blu-ray spec, only 60i. I was told by a learned user on the RED camera forum that I could render to a compliant format (AVC) at 30p but needed to "flag that file for 2-2 pulldown". He has not responded to follow up on that issue.
I understand the concept he mentioned very well -- the result should be transparent in the end because the two "interlaced fields" are actually coming from the same instant in time and when recombined on playback should look exactly like 30p. The problem is I don't know how to accomplish that in DVD Architect (in combination with Vegas) without recompression
When I render out from my 30p Vegas project to AVC 30p -- which requires a modified template since there is no "Bluray" template in Vegas for 1080 30p -- DVD-A will force a recompression of the file. I haven't even actually done a test disc because I can't get past the optimize disc function that will force a recompression. I'm pretty sure things would look fine from a temporal/blur standpoint since there is simply no additional information available in the media from which to construct 60 interlaced fields other than the 30 progressive frames. But I'd like to avoid recompression if at all possible.
I tried rendering 60i out of my 30p Vegas project. Results were identical to what I obtained when I changed the project properties to 60i and rendered 60i out of that: both, i.e., both contained clear interlacing artifacts and blurring, and this despite "disable resample" on all events. Toggling the "adjust source media to better match project and render settings" switch in project properties did nothing to alter these results. "Deinterlace method" was set to "none," even though that should have no relevance.
Does anyone know how to accomplish my desired result either by flagging a 30p file so that DVD-A will actually accept it as compliant or by some other trick? The only other option I can think of is to render 30p uncompressed (which is going to challenge me from a disc space standpoint) and then let DVD-A compress that at the authoring stage at the same time as it's constructing a fake 60i AVC file.
Things look great in Vegas and on a straight 30p output file played in a computer media player. But then I found out to my surprise that 1080 30p is not officially part of the Blu-ray spec, only 60i. I was told by a learned user on the RED camera forum that I could render to a compliant format (AVC) at 30p but needed to "flag that file for 2-2 pulldown". He has not responded to follow up on that issue.
I understand the concept he mentioned very well -- the result should be transparent in the end because the two "interlaced fields" are actually coming from the same instant in time and when recombined on playback should look exactly like 30p. The problem is I don't know how to accomplish that in DVD Architect (in combination with Vegas) without recompression
When I render out from my 30p Vegas project to AVC 30p -- which requires a modified template since there is no "Bluray" template in Vegas for 1080 30p -- DVD-A will force a recompression of the file. I haven't even actually done a test disc because I can't get past the optimize disc function that will force a recompression. I'm pretty sure things would look fine from a temporal/blur standpoint since there is simply no additional information available in the media from which to construct 60 interlaced fields other than the 30 progressive frames. But I'd like to avoid recompression if at all possible.
I tried rendering 60i out of my 30p Vegas project. Results were identical to what I obtained when I changed the project properties to 60i and rendered 60i out of that: both, i.e., both contained clear interlacing artifacts and blurring, and this despite "disable resample" on all events. Toggling the "adjust source media to better match project and render settings" switch in project properties did nothing to alter these results. "Deinterlace method" was set to "none," even though that should have no relevance.
Does anyone know how to accomplish my desired result either by flagging a 30p file so that DVD-A will actually accept it as compliant or by some other trick? The only other option I can think of is to render 30p uncompressed (which is going to challenge me from a disc space standpoint) and then let DVD-A compress that at the authoring stage at the same time as it's constructing a fake 60i AVC file.