avchd bit rates? at DVinfo.net

Craig Bellaire · November 24th, 2009, 12:51 PM

1. Why do the bib companies advertise that 24mbt is the max when

2. Blue ray disc play at higher bitrates. I have a PS3 and the display shows the bitrate to sometimes be a high of above 45...

3. Why does the Canon DSLR shoot at a higher then 24 mbt bit rate.

If they say it's the maximum then shouldn't it be?

Jeff Kellam · November 24th, 2009, 02:19 PM

What's a bib?

You are thinking of AVCHD bit rates.

Blu-Ray plays multiple media formats including MPG-2 and data streams.

Wacharapong Chiowanich · November 24th, 2009, 08:32 PM

24 Mbps is the maximum bit rate specified by the AVCHD spec which is a directory that contains H.264 video and audio streams. H.264 codec itself can have bit rates much higher than those used by the Canon video DSLR. Blu-ray spec has 40 Mbps maximum for all compatible video codecs, namely H.264, MPEG-2 and VC-1. Like AVCHD, any of these codecs has to reside in a fixed directory structure unique to the Blu-ray disc format.

November 24th, 2009, 12:51 PM	#1
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	avchd bit rates? 1. Why do the bib companies advertise that 24mbt is the max when 2. Blue ray disc play at higher bitrates. I have a PS3 and the display shows the bitrate to sometimes be a high of above 45... 3. Why does the Canon DSLR shoot at a higher then 24 mbt bit rate. If they say it's the maximum then shouldn't it be? __________________ Craig Bellaire www.VerticalVideoSolutions.com

November 24th, 2009, 02:19 PM	#2
Jeff Kellam Major Player Join Date: Sep 2006 Location: Virginia Beach, VA Posts: 656	What's a bib? You are thinking of AVCHD bit rates. Blu-Ray plays multiple media formats including MPG-2 and data streams. __________________ Panasonic HMC150/Canon A1/JVC HD1/Sony Vegas 8.0c

November 24th, 2009, 08:32 PM	#3
Wacharapong Chiowanich Major Player Join Date: May 2008 Location: Bangkok, Thailand Posts: 400	24 Mbps is the maximum bit rate specified by the AVCHD spec which is a directory that contains H.264 video and audio streams. H.264 codec itself can have bit rates much higher than those used by the Canon video DSLR. Blu-ray spec has 40 Mbps maximum for all compatible video codecs, namely H.264, MPEG-2 and VC-1. Like AVCHD, any of these codecs has to reside in a fixed directory structure unique to the Blu-ray disc format.