How to find the video bitrate on a DVD?

[Xavier]

I want to find out the video bit rate of a movie. The problem is that I'm not sure how to find the overall bit rate, since it's split into several .vob files. If I open each file in MediaInfo the bit rate varies from 4280 to 5600 Kbps. The nominal bit rate is shown as 7800 on all.

How can I find the overall bit rate. I assume I'm not supposed to look at nominal bit rate, so what exactly is it? I tried to Google what it was, but it seems like the meaning varies. 7800 seems way too high to be the average, and I assume it's not peak bit rate either, since it's exactly the same on all files.

All these numbers, and what I want to find, is exclusively for the video of the movie, not audio.

[poisondeathray]

One way is to join the vobs e.g. vobmerge, or mpg2cut2, then use bitrate viewer, or gspot. This will give you combined audio & video. If you want just video, you can demultiplex it first into elementary video (.m2v) e.g. using dgindex. Then use one gspot or bitrate view on the video only

Another way to do it:
filesize = bitrate x running time
so you can calculate it backwards, by subtracting the audio bitrate first

The "nominal" bitrate as reported by mediainfo usually refers to what bitrate the encoder was set at. This doesn't necessarily correlate with max/min/or average.

[manono]

The nominal bitrate in this case is the max bitrate as set in the encoder. If you really want the overall bitrate (video, audio, subs, muxing overhead), then put the DVD in the DVD-ROM and use DVD Bit Rate Viewer on it.

If you want the average (and actual max) bitrate for just the video, open all the VOBs at once in DGIndex, go File->Preview, and be prepared to wait a bit. You can make it go faster by going Options->Playback Speed->Maximum.