24 Mbps AVCHD to 25 Mbps blue ray .m2v

aquaholik wrote on 8/17/2010, 3:55 PM

Wow what a difference! I was going from 24 Mbps AVCHD .m2ts original source file to 16 Mbps blue ray .avc. That rendering time was 7.5 to one plus the original quality was not preserved.

I tested render the original 24 Mbps AVCHD .m2ts to 25 Mbps blue ray .m2v using the MainConcept Mpeg 2 and rendering time was cut by more than half. And the quality was noticeably better than stepping down to Sony AVC at 16Mbps.

In this case, it doesn't pay at all to save a little space. Rendering time was longer with the Sony AVC type than the MainConcept Mpeg2 and the MainConcept Mpeg2 .m2v files produced better quality HD video with less than half the rendering time, especially with footage that was just clipped or trimmed.

Comments

Electro_Fixx wrote on 8/18/2010, 12:13 AM

Thanks for the info man!
AVCHD render here is a problem after a while the video starts to lag a little don't know why!

Electro_Fixx wrote on 8/18/2010, 1:10 AM

Did you used default settings?
Mine here has a worse result than original AVCHD 16mbps.
Render is fast but the final image is a bit grainy

aquaholik wrote on 8/18/2010, 8:38 AM

AVCHD render here is a problem after a while the video starts to lag a little don't know why!

Use tsMuxer to "fix" it. It is very fast and it "fix" it so that Media Player and the PS3 won't stutter during playback. The .m2ts file created by the AVCHD templates plays fine after the fix but you can send the unmuxed .m2ts files to DVDAS and it will output to blue ray and the resulting .m2ts has no lag/stutter/etc. So it is inconclusive if there is something wrong with Sony AVCHD rendering. Just use tsMuxeR if you want Windows Media Player to play it correctly.

See this threads:

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=723739&Replies=1

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=723760&Replies=14

http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=721724&Replies=14

I don't have the grainy video problem and I can definitely tell that the .m2v render is more faithful to the original .m2ts file than the .avc render. In the 16Mbps .avc render or .m2ts AVCHD render, I can see the "shimmering/blocking/morphing" between the frames. The best way I can describe it is that if you freeze frame, you get a crystal clear frame, and the next frame is blurrier, and then back to being clear again. The .m2v is rock steady. A good example is a solid blue shiny building in one of the scene. The .m2v shows a steady blue while the .avc has the "shimmering" effect.

I noticed that in a heavily edited 1 hour video, my rendering time went from 7.5 hours to 3.5 hours. In another video that I just pieced together and trim that was 1.5 hours long, rendering time went from 11 hours to just 2.5 hours!

Electro_Fixx wrote on 8/30/2010, 11:07 PM

Aquaholic!
Man you are a genius!
the TSMuxer FIX the avchd .m2ts file, now the file plays fine and smooth on windows media player in windows 7.
Not sure yet what it does but its a great software
5 stars

ty from Japan :)

aquaholik wrote on 8/31/2010, 3:00 PM

Don't thank me, thanks musicvid or corvid for that fix. But you must remember this, only render to .m2ts if you want to play it in the PS3 or use Windows Media Player. If you want to render for blue ray authoring, avoid .m2ts rendering. DVD architect do not work well with it. Besides, .m2ts rendering max out at 16mbps. DVD architect prefers the audio and video files to be separate. It works much better that way.