The Digital Video Information Network - View Single Post - Will a MPEG-2 high bit rate cause playability problems?

Mike Kujbida · November 15th, 2008, 08:37 AM

Paul, because the DVDs we make are burned and not replicated (pressed), the usual recommendation is to not exceed a CBR of 8M, primarily to avoid playback problems.
VBR can (and some Vegas templates do) go up to around 9.5M but, as this is a temporary spike, it's OK.
I used a bitrate calculator to help me create several templates for videos over 75 min. long (in 15 min. steps).
I have ones for CBR settings and VBR settings.
I'll use CBR if the screen content is primarily static (i.e. talking heads) and VBR if there's a lot of movement (i.e. stage performances).
If the video has a lot of movement as well as scenes that vary in light levels, I'll add a 2-pass to the mix.

The one thing I started doing a long time ago was, when using VBR, to chanbe the default Min. from 192,000 to 2,000,000.

November 15th, 2008, 08:37 AM	#4
Mike Kujbida Trustee Join Date: May 2005 Location: Windsor, ON Canada Posts: 1,429	Paul, because the DVDs we make are burned and not replicated (pressed), the usual recommendation is to not exceed a CBR of 8M, primarily to avoid playback problems. VBR can (and some Vegas templates do) go up to around 9.5M but, as this is a temporary spike, it's OK. I used a bitrate calculator to help me create several templates for videos over 75 min. long (in 15 min. steps). I have ones for CBR settings and VBR settings. I'll use CBR if the screen content is primarily static (i.e. talking heads) and VBR if there's a lot of movement (i.e. stage performances). If the video has a lot of movement as well as scenes that vary in light levels, I'll add a 2-pass to the mix. The one thing I started doing a long time ago was, when using VBR, to chanbe the default Min. from 192,000 to 2,000,000.