Bitrate doesn't change regardless of setting

therat

New member
I'm using VRDT 374. I've noticed that when I click on "save as" -> Options -> Bitrate, it doesn't matter what value I choose, the average output bitrate is always the same.

On a 65 minute HD recording VRDP saved to a .VOB at an average bitrate of 6.49Mbps regardless of whether it was set at 15M, 10M, 4M or 2M.

Is this how it should be or is it a bug?
 

murrayt

New member
Therat

The VRD guys can comment

As I understand it various programs can patch the Mpeg header. The patched value has to be consistent with the actual stream

But in reality if the Mpeg content has an av bitrate of x then the header value is not able to change the content without significant re-coding
 

Danr

Administrator
Staff member
murrayt is 100% correct. The header patching is meant to make DVB captures more compatible with DVD authoring tools. DVB is broadcast with an MPEG header set at 15 Mbps, where as DVD require something less than 9.8 Mbps.

The adjustment does not alter the actual video data stream itself, only the header bits.
 

Danr

Administrator
Staff member
With users from Australia / Asia, to Europe, and the USA, the sun never sets for VideoReDo :)

We also have contractors and developers all over the world helping us out so time doesn't have the same meaning as it did when we worked in a normal 9-5 office.

But, my golf game is suffering, so once we get this release out I can get back to enjoying some time on the golf course. :)
 

therat

New member
Thanks guys. I had a feeling it wasn't doing a full reencode (otherwise it would have been the fastest most powerful encoder in existence).

Golf is great for relaxing Dan. You need to get back on the course and drive a few balls.

cheers
 
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