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George DeFrates
Burn BluRay Disc
on Dec 12, 2012 at 5:23:25 pm

Hi,

I am burning a movie to BluRay disc for the first time. I have encoded my videos in After Effects to HDV/HDTV 720, (1280X720) 29.97 frame rate. Since this is an HD codec, I thought this would burn to a BluRay disc. Now I'm not so sure. When I export this file to Encore CS6 for BluRay burning, can I use the above format or must I encode to another format?

If I must re-encode, can I have Encore encode to a 1920X1080 format? If so what preset should I use to encode to the 720 or the 1080 format?

Thank you very muchg for any assistance.

George


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Jeff Pulera
Re: Burn BluRay Disc
on Dec 12, 2012 at 7:25:04 pm

Hi George,

Are you are Mac or PC? In either case, Blu-ray uses specific settings for either H.264 or MPEG-2 files, and any clips not meeting these criteria will be transcoded (recompressed)as needed by Encore to create the disc.

So the question is, what format did you output from AE? The 720p 29.97 is the frame size and frame rate, but what "codec"? Default is "lossless" which creates very large, uncompressed files. In the Output Module, you can go to the drop down list and choose "H.264 for Blu-ray" and then also make sure to check the "Audio" box at the bottom of Output settings window, else you will export video only.

You will end up with TWO files, one video, one audio. In Encore, choose "Import as > Timeline" and grab both clips together then.

Alternately, you may be able to import whatever you have right now and bring that into Encore, and it will transcode to the correct format before burning.

I would stick with the original 720p for Blu-ray, won't look any better by upscaling and may even lose some quality in the process.

Thanks

Jeff Pulera
Safe Harbor Computers


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George DeFrates
Re: Burn BluRay Disc
on Dec 12, 2012 at 8:36:34 pm

Hi Jeff,

Thank you for the quick response. I am on a PC with Windows 7, 64 bit. I output the file in AE at the 1280X720 format through the AE render que's presets. It doesn't mention a "codec". When I hit the "format options" in the render que it indicates "none" for codec.

My videos require an alpha channel, so the Output Module indicates "custom avi".

I place my rendered videos into Premiere Pro CS6 and have about an hour long video. Yes, the individual files sizes are huge compared to my normal DVD file sizes. So I should encode out of Premiere for Encore DVD at the 720P size for BluRay?

Just as info, could I set encoding in Media Encoder to a different frame rate such as 23.976 or 24 at different resolution? Would a 23.976 frame rate encode faster than a 29.97?

Sorry for all the questions, but I've never dealt with BluRay discs before and I guess I need to catch up with the newer formats.

Thanks for all you help, Jeff. Have a great day.

George

George


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Jeff Pulera
Re: Burn BluRay Disc
on Dec 12, 2012 at 9:14:54 pm

Hi George,

So you've never made a Blu-ray disc, and I've only made 1080i Blu-rays, so now what? What a team we make. I looked in Adobe Media Encoder, and Encore, to see what presets they offer for 720p Blu-ray and surprise - no 29.97!

I see frame rates of 23.976, 24, and 59.94 offered. I don't have a camera that shoots 720p and therefore have no experience working with or burning 720p formats. All been 1080 the last 4 years.

So perhaps you were on the right track of encoding to 1080p30? Otherwise we're looking at changing the frame rate and I'd expect better results changing the frame size rather than the rate. Hopefully someone with experience in this area can share some insight?

Thanks

Jeff Pulera
Safe Harbor Computers


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Daniel Ludwig
Re: Burn BluRay Disc
on Dec 15, 2012 at 7:53:58 pm

Hi guys,
there are different issues!

BD specs cover theses framerates: 1080p23.98, 1080p24, 1080i60 and for countries that are broadcasting in 25fps there´s 1080i50 as well. for 720p you´ve got 720p60 or (25fps-countries) 720p50.

there is no 720p29.98 at all....

so the best way to bring it to BD would be upscaling to 1920x1080 and use a 1080i60-encoding-setting. this will result into 1080psf60, without any problems.

cheers

danny


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George DeFrates
Re: Burn BluRay Disc
on Dec 16, 2012 at 4:14:41 pm

Hi Daniel,

Thanks for the info. I guess I can export from Premiere Pro CS6 in Media Encoder tothe 1920X1080 setting with i60 frame rate then import to Encore for BluRay burn. Since the original video files are at 1280X720 at 29.97 frame rate, will there be any distortions to the video going to the larger size and frame rate?

Thanks for your help, Daniel.

George

George


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Daniel Ludwig
Re: Burn BluRay Disc
on Dec 16, 2012 at 4:57:19 pm

Yes, correct.
all you´re doing is an upscale.

but: you might be awared of HDV 720p - it´s an anamorph HD-format as the native resolution is 960x720 and will be scaled to 1280x720 through the dedicated codec. this could cause a problem.

all I can say: use your eyes ;)

cheers

danny


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George DeFrates
Re: Burn BluRay Disc
on Dec 17, 2012 at 1:49:24 am

Daniel,

I apologize for all the questions and confusion, but. . .

Looking at Media Encoder thru Premiere Pro I do not see a 1920X1080i60 format under H.264 BluRay nor MPEG2 BluRay. Under the H.264 presets it indicates several one being 720p 23.976, 50, and 59.94.

The H.264 format does have a 720P 29.97 preset and 1080i and p at 29.97. Can't I use the 720P, 29.97 preset to burn to bluray disc and play on BluRay player?

Can you please explain further?

Thanks, George

George


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Daniel Ludwig
Re: Burn BluRay Disc
on Dec 17, 2012 at 3:30:55 am

you need to choose 1080p29.98 as 1080i60 and 1080i29.98 is the same (only another description). as described - there is no real 1080p29.98 within the BD-spec, so the 1080p29.98-setting from media encoder should result in 1080psf29.98. psf stands for progressive segmented frame, meaning a progressive picture within an interlaced wrapper.

cheers

danny


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George DeFrates
Re: Burn BluRay Disc
on Dec 17, 2012 at 3:51:54 am

Thanks, Daniel. I will try that. Appreciate your patience and help.

George

George


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