I looked over a couple of guides and did not see which is better to use in dvd2one. It ask if you want a variable or constant compression what is best every so often i get to the end of a movie and it gets choppie and it seems its on the one that have a higher compression Ive always used variable i want to know what is best.thanks
Set user defined 1 to 4400Mb
Use variable compression
And use a reputable branded media such as Ritek or Taiyo Yueden
The user defined 1 to 4400Mb and a good quality media should overcome 'the end of a movie and it gets choppie', or reduce the size lower to maybe 4300Mb.
thank you for the reply. i always use good media over 300 great backups after i learned what works best for my setup. but lowering the Mb would mean higher compression. i thought that was what was causing the problem. if not could you give me the short of that if thats the case.
The actual size of a dvd5 is approx 4.36Gb and not 4.7Gb.
The byte setting is relatively important, as alot of dvd players struggle playing the extreme outer circumference of the dvd5 by losing focus of the data (irrespective of compression ratio), and as you have seen, this causes the skipping and choppiness towards the end of the movie.
To avoid this, using the 'user defined' options allows you to fine tune the overall size to enable dvd2one to compile the file structure to below this size, therefore reducing the risk of burning to the outer circumference and reducing the chance of 'focus loss'.
You have not mentioned about the selective ratio, so I assume you are using an older version.
The latest version allows you to select different ratios, to clean up the viewing pleasure.
Quote:New compression introduced, the selective ratio engine.
This new engine is a different way of approaching the video data! Selectable in three pre-defined levels, this new engine determines the balance in distincting the important screen parts from the less important ones.
Things that are not in focus in the current frame, like backgrounds, are low in detail or as we define it, of low importance to the screen.
and can be approached differenty than the important ones.
With this new compression method, setting the slider to low will lead into a scheme where the important parts of the screen are a bit more compressed than the less important ones. Compressing of low important parts can result into macroblock because the original encoder in a good encoder setup already achieved the best possible compression without loss of detail.
In medium the important parts are even more compressed than the non important parts, and in high the compression is almost done only on the important parts.
However in all three mode's the less important parts are still being compressed, because that is still mandatory to get the desired endsize.
By using this new method, the macroblocking (over compressed parts) will be less visible than with the conventional approach.
If they occur they will be more eye friendly shaped, meaning they are not 100% square but a bit more dithered shape.
The human eye will notice them less in this non square shape and thus resulting in a more pleasantly viewable version of the picture.
But all encoders are based on different motion detection scheme's, meaning there's no golden rule.
Most of the time setting it to medium will give you a very descent looking output, however with some encoders setting it to low or high might give a better quality output.
It's advisable to experiment with these settings on different discs from various distributors and view the end result on your setup by burning the video onto a rewritable disc.
Neither Constant or Variable is always right for a particular set of circumstances.
Generally speaking, you could use Constant for long movies when only the movie is going to appear on your finished DVD - no other junk like trailers and small 'making of' features.
The Constant mode compression can occasionally have problems with small VOBs, resulting in the blockiness. This is why as a general rule its use is reserved for movie-only transcodings of very long movies, where it really shines. For whole disc sessions and normal length movies you may be happier with Variable mode.
Basically Variable or Constant compression can be used, and should not have any impact in dvd players ability to play it except for the overall viewing pleasure................................
