-
SD Bars for DVCPRO HD Timeline
This may not be such a great idea… but I want some input anyway.
We are mastering most of our material now as HD, but the final product is delivered in SD. We o send the HD timeline through our AJA downconverter to crop and downconvert while going to tape. (It also goes through a Videotek legalizer…) After we get to digibeta, we have to go back to final cut, make a SD sequence with Bars and then insert the SD bars to the digi.
I want to find a way to skip the SD bar insert if possible. Are there any suggestions on how to make pillar boxed NTSC bars encoded for DVCPRO HD without messing up the colors or image in the process? This would let us insert “SD” bars into the HD timeline and edit to tape through the downconvert process.
I’ve tried exporting SD bars as a self contained quicktime and then blowing them up and rendering in the DVCPRO HD timeline. Then rendering as a Self-Contained DVCPRO HD clip. This is no good because too much noise is introduced to the image. It doesn’t hold up under the gammut scope.
Any suggestions?
-
2 Replies
-
What about exporting a still into photoshop to resize it and clean it up as needed. You can tell on a scope if the values have changed in the process.
Black magic have downloadable bars here…
https://www.blackmagic-design.com/downloads/colorbars/qtime-ntsc-colorbars_8bit.zip
There is a still posted here if that helps.
https://www.technical-video.com/images/colorBars.zip
-
Thanks.
I was thinking about this. I’ll give it a try. Hopefully it will create a cleaner image than the rendered one.
I should have included this in the original post, but thought it would convolute things… We want to create our HD and SD masters for the project at the same time. What I’m getting at is trying to have a DVCPRO HD timeline that has SD and HD bars before program so we can do a simulateous lay back for both masters.
We control the HD deck and put LTC into the digi as external tc and regenerate. The same source video feeding the HD deck is routed through the AJA box or taken from the DC option out of the HD cam.
Reply to this Discussion! Login or Sign Up