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Best compression for 360p video on blu ray?

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Mike Soprano
Best compression for 360p video on blu ray?
on Jan 18, 2012 at 8:52:30 pm

I have 155 video clips around 99 hours that are natively 640x360 MPEG-4 Codec H.264, ACC. I tried to burn a few on a BD-RE using Toast 10 without any re-encoding from Toast and the quality wasn't as good on my big screen as when I watch the videos on the same screen from my computer using quicktime player at full screen. So what I want to know is what is the best way to re-encode these video's using apple compressor to burn on blu-ray using toast 10.

I tried using *this compressor setting which looked a lot better when I only burned a few clips with Toast 10 not re-encoding but with the resulting larger file sizes meant I could fit less on the blu ray. I let toast re-encode the 49 clips to fit on a single 50 gig BD-R DL but the resulting quality was poor.

For comparison the same 49 min clip at 640x360 was 1.08GB came out at 6.62GB when converted.

*File Extension: m2v
Estimated size: 8.1 GB/hour of source
Type: MPEG-2 video elementary stream
Usage:Blu-ray
Video Encoder
Format: M2V
Width: 1280
Height: 720
Pixel aspect ratio: Square
Crop: None
Padding: None
Frame rate: (100% of source)
Frame Controls: Automatically selected: Off
Start timecode from source
Aspect ratio: 16:9
Field dominance: Automatic:
Selected Progressive
Average bit rate: 18 (Mbps)
2 Pass VBR enabled
Maximum bit rate: 27 (Mbps)
High quality
Best motion estimation
Closed GOP Size: 1/2 second, Structure: IBBP
DVD Studio Pro meta-data enabled

So what is the best compression for getting these videos on a blu ray and having the quality still be on par with what I see on my hard drive? I was hoping to spread the 155 video clips over three 50 gig blu rays if possible.

I also have 155 short 5 second intro clips exported from motion using pro res 4444 1920x1080 that need to go on the disk with the other clips.

Thanks in advance.


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Craig Seeman
Re: Best compression for 360p video on blu ray?
on Jan 18, 2012 at 9:35:34 pm

A 640x360 heavily compressed source just isn't going to handle going through a round of compression going to 1280x720. I'd use H.264 rather than MPEG2 but I don't think that's going to help all that much.

You might have to look for good upconversion software.



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Mike Soprano
Re: Best compression for 360p video on blu ray?
on Jan 18, 2012 at 11:01:51 pm

In terms of size can I get it any smaller so I can fit more on a disc and keep quality close to the original. The converted video I made of the source to 1280x720 doesn't look half bad compared to the original the problem is I can't fit as much as I would like on a blu ray.

What up-converting software would you recommend I use in this situation?

I just want the video to display half decent on a big screen with no artifacts. It looks fine when I watch it on my TV from my PC, I wish getting it to do the same on a disc was easier.


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Craig Seeman
Re: Best compression for 360p video on blu ray?
on Jan 18, 2012 at 11:32:33 pm

You can lower the data rate but that lowers the quality.
I like this bit rate calculator.

http://www.pimley.net/projects/#bitratepro



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