Interlaced encoding

[psmuk]

I have a DVD which main film is 2hr 7 minutes long, this is and interlaced movie and TFF.

I wish to keep all the extras and after viewing in Bitrate Viewer the average bitrate is 4916 and peaks @ 6408. However Reauthorist only allows average of 3968 and I run all extras at 1850. Would this bitrate of 3968 produce a high quality film ? Would increasing the number of passes produce a better quality ??

TIA

[Master Yoda]

Yes it should give you a good quality picture.I use 5 or 6 pass', i would'nt use less than 4 pass' though.Bitrate viewer aint very acreate when it tells you if the movie in interlaced or progressive, well for pal movies anyway.If its pal check the movie m2v file in dvd2avi.If you cant see any interlacing affects like black combing lines then the movie is progressive.Nearly all pal movies are progressive and extras and mostly interlaced.

[69Mws]

From my experience I don't think that more than 3 passes are necessary, even 2 passes are already great. Don't forget that the creation of the vaf-file is also already a pass for itself from what I understand, so setting two passes is effectively 3 passes and so on.

It may be useful on dvds with live concerts, 'cause these have quite "complex pictures", like fast moving cameras, different lightings, transitions between different camera positions and stuff like that.

Greetz
69Mws

[psmuk]

I am keeping the main movie interlaced and from previous posts see that interlaced encoding will need more bitrate. However RA qoutes me a 1000 lower than Bitrate Viewer reports as average rate.

Considering this will a high quality film be produced

[Matthew]

Originally posted by psmuk
Considering this will a high quality film be produced

It's a little hard to say, because this can greatly depend on the source (e.g. is it noisy or clean? Is it bright or dark?). A good idea is to look at the q values in CCE's advanced settings. You an do this after vaf creation is finished, or simply after running a whole encode. This will give you some kind of objective measure of the quality.