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Old October 29th, 2007, 06:32 PM   #1
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Downconvert using Matrox

Hello Matrox uses,

Can anyone confirm the best way to down convert HDV to SD for DVD using the Matrox RT.X 2?

I have recently been importing the Matrox HDV .avi file into Virtual dud to resize it to 720 X 576 (Pal 16:9) and then encode to mpeg 2 using TMPGEnc. However I still get the jaggies! The colour and picture looks great however.

Anyone have a better solution?

Regards Scott.
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Old October 29th, 2007, 10:27 PM   #2
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I use PremPro2+Access HD, not the tools you use have, but I have a suggestion. When I used the aforementioned to output standard [either NTSC 30i or PAL 25i], my 1080i Sony footage had very exact, three line deep, jaggies if there was ANY panning. I got wonderful results by outputting standard PROGRESSIVE footage. If you think about it, a single 1080i HDV field is 540 high and 1440 across, more than enough to make even a PAL 576x720 frame. In my case, the Cineform Access makes the .avi export to standard. I then use DVDit Pro HD to make both standard DVDs and Blu-Ray HD discs.

Last edited by Don Blish; October 30th, 2007 at 10:48 AM.
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Old October 29th, 2007, 10:48 PM   #3
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Thanks for the reply Don. I will look into exporting standard progressive.
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Old October 29th, 2007, 11:28 PM   #4
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After a lot of testing, the best way I have found based on the Adobe products (RT.X2) is to export a native file and do the downsample in After Effects. Much better results, and you account for interlacing, and even add pulldown to 24p footage for DVD.
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Old October 29th, 2007, 11:36 PM   #5
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So it look’s like investing in after effects is the best option? Not cheap when you consider having already paid for the Matrox hardware…

Thanks for your reply Mike
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