DivX settings for DVD-R?

[TheBashar]

I'm hoping someone can help me out by recommending some good settings to use when the target is not CD's but dual-sided DVD-R's.

I have a lot of DVD movies that I like to take over to friends places when we're having parties. Well pick one or two and have them playing in the background during the party. But I'm getting tired of carry 20+ DVDs over and having some get scratched when drunk people try to pick out a movie.

Since my friend has a spare box with a TV-out card and DVD-Rom, I'd like to make a DivX copy of the movies to take over there. I have some dual sided DVD-R's so I have a lot of space to play with.

I would like to find out some resolution / bitrate recommendations for the video encoding so I can get very good quality. I've been using the Gordian Knot guide, but it's geared for X cd's as the target filesize. I have no real taret size because of my target medium, but I would still like to keep the filesize reasonable so I can fit as many DivX movies onto a dual-sided DVD-R as possible.

This way, maybe I only carry over 5 dual DVD-R's, and each has four or five DivX encoded movies on them. So is there a way to use a true VBR setup to use as much bitrate as needed, but not use just insanely high bitrate on everything just for the hell of it?

I guess I could just say well I have 9.7GB per dual DVD-R and I'd like 6 movies per so... that's 1.56GB per movie. But that's really inefficient. Some movies are longer, some are harder to encode. I'd like to find settings to encode them all with the same (high) quality and let the filesize fallout as the encoder sees fit.

Any suggestions? Thanks!

[Acaila]

A nice bitrate would be about 1400-1500, this will give you near DVD quality but won't take too much space (using DivX4 2-pass mode of course). This is generally used for 2 CD's and should come out at about 1500MB, depending on movie length/compressability of course. This will hold the original AC3 sound as well so you'll get nice audio for your parties :)

[serbersan]

I thinks you could try doing 1CD rips with Gknot but without the limitations of the 700 Mb rip.

I mean, you could lower resolution and do compresibility check with Gknot with values between 65-75, using filtering.

If you couldn't reach this values raise Mb using 750 - 800. With little filtering (2,1), (1) (and without it in some cases) you could do great rips with only 1000+ kpbs.

I say that because the kpbs you have to use depends of the movie and I think it isn't necessary to use 1500-1600 all the time, only when it's necesary. I have made 1 CD rip of Come Along Spider 1:33 min 640x272 audio 150kbps with the quality of many of 2CDrip with 1500. After do compressibility check with divx3 the % is 77% with only 923kbps.

[ThePanda]

Originally posted by serbersan
After do compressibility check with divx3 the % is 77% with only 923kbps.

Sorry but can you tell me what compressibility check is? :confused:

[dragoman]

Sorry but can you tell me what compressibility check is?

Compressibility check is an option in GordianKnot. Basically what it does is encode a percentage of the movie (default 5%) and test how compressible the movie is.

By doing this you can get very accurate file-size predictions based on your bitrate and resolution.

dragoman

[ChristianHJW]

O.k. , i had to search a bit but finally found it ( 10 pages back .... puhhh ) :

http://www.divx.com/forums/viewtopic.php?topic=23673&forum=6 .

If you really wnat to fit one DivX4 movie on a 4.7 GB DVD-R here is what you do :

1. Demux all AC3 streams you can find and copy them onto the DVD ( dont panic, you have plenty of space ) . Nandub will allow you to mux 2 of them with your AVI, any good player ( like PowerDivX ) will allow you to select one of them for playback ( your language ).

2. Resize to 848 * xxx . I know it sound stupid at first but in fact it makes sense ( read thread above ), and your 4.7 GB DVD-R will allow you to work with bitrates > 3000 kbps for most movies. DivX 4 when being used on a ( 16:9 ) 720 * xxx movie in 2 pass mode will never give you an average bitrate > 2000 kbps .... whatever bitrate you may set. When we resize from 720 * 480 ( NTSC ) or 720 * 576 ( PAL ) to something like 720 * 304 ( cropped ) we in fact loose some ( tiny ) resolution .... and with a DVD-R there is no need to do that ! Of course, here is the downsize : You need a very good video card and CPU to be able to watch a movie at this resolution smoothly !

3. Do Subtitles as you like ( VobSub ) and maybe even think of menus ( PowerDivX again ).

I promise : For a normal ( mean < 150 mins ) 16:9 movie you won't be able to get your 4.7 GB fully used, even at 848 * xxx res .....