Pro X2 - Video bit rate of raw AVCHD clips vs. rendered file
Posted: Mon Sep 29, 2008 10:48 pm
I am creating 1920x1080 AVCHD discs on standard DVD+R from AVCHD files (AVC H.264) rendered in Pro X2 from Sony SR-11 1920x1080 clips. (I'm not using Smart Render in Pro X2 because it causes audio-video sync problems with AVCHD, so Pro X2 is re-rendering the clips when it creates the AVCHD file).
Cyberlink PowerDVD 8 Ultra displays the bit rate when playing a file or disc. I used it to check the raw clips from the camcorder and the bit rate is almost always between 15 and 16 Mbps, which is the rate associated with the SR-11.
When I create AVCHD files from these clips in Pro X2, I set the bit rate to 16 Mbps in the settings for file rendering. However, the resulting AVCHD file (and the discs burned from that file) have a bit rate varying between 7 and 11 Mbps. It never gets close to 16 Mbps. Yet the video looks good on my 1920x1080 LCD TV when played from my Blu-ray player.
Is this normal that rendered files and discs have a much lower bit rate than the native clips out of the camcorder, even though I set the bit rate to be the same as the camcorder produces (16 Mbps)?
Cyberlink PowerDVD 8 Ultra displays the bit rate when playing a file or disc. I used it to check the raw clips from the camcorder and the bit rate is almost always between 15 and 16 Mbps, which is the rate associated with the SR-11.
When I create AVCHD files from these clips in Pro X2, I set the bit rate to 16 Mbps in the settings for file rendering. However, the resulting AVCHD file (and the discs burned from that file) have a bit rate varying between 7 and 11 Mbps. It never gets close to 16 Mbps. Yet the video looks good on my 1920x1080 LCD TV when played from my Blu-ray player.
Is this normal that rendered files and discs have a much lower bit rate than the native clips out of the camcorder, even though I set the bit rate to be the same as the camcorder produces (16 Mbps)?