XviD 2 Pass

[sirt]

Hi,

Well I have an embarrassing question ; let's say I have encoded a video in 2 Pass via XviD. I end with an AVI file. If I have a look at it on MediaInfo I can't see anywhere if the video had been encoded in 2 pass, 1 pass or single pass mode. I guess it is simply because the parameters are not written with standard XviD contrary to x264 that allows you to know which rate control mode had been previously chosen. Or am I wrong ? How can you know which mode had been chosen with XviD ?

[sirt]

Any suggestion ? I am not sure if it is trivial or not..

[detmek]

You could try with Bitrate Viewer. Maybe that would help you.

[sirt]

Thank you. Unfortunately, it doesn't seem this program will reveal the rate control mode chosen. It points out min and max bitrate as from I see. I think the official XviD is compiled without parameters being written contrary to x264.

[detmek]

No, it does't. You have to watch the graph and make a gues based on bitrate distribution. If bitrate fluctuates a lot then its probably 2-pass VBR or CQ (which almost no one uses for final encode). If not, its probably 1 pass CBR.

[sirt]

Well thank you, I finally guessed what you suggested . But as you see it is not totally accurate ; nevertheless, do you think it is possible to recompile the XviD code source by writting encoding parameters ?