Difference between rendering m2ts and avc for bluray?

[John Rofrano]

[Michael Gibrall] “Is there really a difference if I render as an m2ts or avc?”

Yes, one is encoded with MPEG-2 and the other is encoded with AVCHD. Two completely different codecs.

[Michael Gibrall] “I’ve watched blurays of the same film compiled both ways, and don’t notice a difference.”

That’s because MPEG-2 @ 25Mbps is about the same quality as AVCHD @ 16Mbps. So they will look the same but you can get a whole lot more AVCHD on the disc because the files will be smaller due to the lower bit rate needed to achieve the same quality.

[Michael Gibrall] “Is there technically a difference, and is one format more compatible than the other when it comes to BD-R playback?”

There should be no compatibility issues, Blu-ray supports MPEG-2, AVC, or VC-1 video encoding.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Michael Gibrall]

Thanks, John.

I guess there’s no need to compile as both m2ts and avc if the quality is the same. File size isn’t an issue for the disk.

[John Rofrano]

[Michael Gibrall] “I guess there’s no need to compile as both m2ts and avc if the quality is the same. File size isn’t an issue for the disk.”

That’s right. You have the option of using whatever footage you have that’s compatible. If you shoot HDV, then you can use your MPEG-2 HDV footage as is. If you shoot AVCHD, then you can use your AVC/h.264 AVCHD footage as is. It’s your choice.

~jr

http://www.johnrofrano.com
http://www.vasst.com