Does Resolution effect size of Movie on disk?

[ferenc8]

I have not been at this for that long. I have noticed the different resolutions that one needs to keep to for authoring a DVD movie onto disk. I am working with PAL and find that 704x576 looks good on my wide screen TV. However I have hour long TV episodes but can only fit two on a disk. I have managed to fit 4 completely different TV episodes onto one DVD. Both shows have been done in 704x576 I think. What am I missing? I know that when I use 352x576 the movie looks a bit squashed but my TV has different zoom settings. What are the regular DVD movies resolutions? I use Cucusoft Avi/Mpeg Pro converter and there is a little box to tick 'stretch to fit'. How does this effect the end result of the movie if the resolution is 352x576?

Question 2: I have converted a DVD rip of 700Mb to DVD. Throughout the whole movie there is a white line down the right hand side of the screen. Though the original does not have this line. Is this a defect of the original?

Thank you for your help.

f8

[mats.hogberg]

Regular PAL DVD is 720/704x576, but can also be 352x576 and 352x288.
Resolution does not affect file size directly, only bitrate does, but as higher resolution requires higher bitrate, indirectly it does.
q2: Probably not (as, as you say, it's not present in your source file). More likely due to something in the conversion process.

/Mats

[ferenc8]

The converted 700Mb DVD rip to DVD produces the same white line effect every time. Is it possible that the original does have a defect too small for the eye to see but once converted, it shows up?

[ferenc8]

Sorry to post again...so if i lower the bitrate, then in effect the vidoe size would be smaller. What can I lower the bitrate to if I use 704x576?

[drewzor]

you can calculate biterate with aspect calculator download . just enter duration, audio, res and a magic number will be given. you can lower it from there but it starts to effect quality. one of the things that influences size dramatically is audio. convert your audio to mp3 or ac3 at a lower biterate and you can nearly half the size..

[garryheather]

Don't forget that you will need a higher bitrate for fast action conent than you would for say South Park which is full of solid colours and not a lot of movement. If the bitrate is too low you will lose definition and may even introduce compression artifacts like highly visible macroblocks. You cannot really say there is a specific bitrate for a particular resolution if quality is your aim. If you must get the lowest possible bitrate look towards a 2 pass encoder and go for variable bitrate, not a fixed bitrate that is too low all the way through.