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View Full Version : How to determine peak bitrate of AVI


xiaphan
17th April 2003, 01:27
I have a little problem. I make full-quality Divx5 rips of my various movies and have been doing so for some time in anticipation of getting a laptop and them watching them. Well, silly me, some of these rips are too high in end bitrate to play properly (such as 3000+ kb/s Robotech cartoon episodes that I was having problems with earlier). But some movies play fine, for instance my rip of My Big Fat Greek Wedding (~1200 kb/s). My question: is there a tool that will tell you the peak bitrate in a vbr avi (such as these full quality rips, or some of the old multipass rips I still have)? I know about Gspot, but as of v2.1, it only gives an average bitrate, which is useful but not really what I need.

Any advice would be appreciated.

BTW, the laptop is a Sharp Actius MM10. It has an SMI Lynx3d+ card w/ MPEG-2 decoder chip and a 1 ghz Transmeta Crusoe. Yeah yeah, not so powerful, but it weighs 1 kg and is about the size of a spiral bound notebook. Look here: here (http://www.sharpsystems.com/datasheets/PC-MM10.pdf). I use mplayer classic and ffdshow and ac3 filter (cuz ac3 audio), which does pretty well with the lower bitrate movies.

Acaila
17th April 2003, 07:47
Most of the time the determining factor is the video resolution, not the bitrate. You should try out various different resolutions to see what plays fluently, and stick to those with new encodes. There's no way to know if something plays well until you actually play it, because it's all dependent on the machine that plays it, it's not a property of the video (so no tool can tell you).

crusty
18th April 2003, 20:34
There are some ways you can get more information on size and quality of frames.
virtualdub: Open your avi in virtualdub and check 'file information'in the file menu. One of things in there are min/average/max framesize. Don't know if it's the same as max bitrate though...
Also there might be a histogram filter out there that does something like that.
Also the tool DrfAnalyzer might give you some information...try it out.

xiaphan
18th April 2003, 20:40
Thanx a lot, that was a lot of help. Do appreciate it.