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Compression on DVD Shrink

Discussion in 'DVD Shrink forum' started by tokra, Jan 31, 2005.

  1. tokra

    tokra Member

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    Just need some advice,

    Just started using DVD shrink,but what sort of compression percentage should I be looking for on the main movie , I know the higher the better but on average what gets a decent watchable copy.



     
  2. sly_61019

    sly_61019 Senior member

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    ive gone down to 65% (LOTR), but you want to try to stay above 80%. If its under 85% you should use deep analysis.
     
  3. CG_Gurl80

    CG_Gurl80 Guest

    It really depends on what you consider acceptable and whether or not that will be sufficient for your tastes. I know it sounds cliche but it's the truth. I've compressed movies to as low as 54% but there was obvious pixelation and quality loss, as would be expected. It's the price you pay for keeping the menus and extras.

    Now, if you're re-authoring and just keeping the main movie, often your compression ratio will be at 72% or higher, and that is fine for me. You could also backup as a full disc and replace some extras with still images if you insist on keeping the working menus and so forth.

    When compression is below 90%, I always run deep analysis and High Quality AEC. It's all a matter of how much time you are willing to give Shrink to encode. Here is how I would chart the quality. (My opinion only! Your level of scrutiny will probably vary.)

    90%- 100% Great quality. Backup as is.

    80%- 90% Still very good quality, run Deep Analysis and High Quality AEC if you wish.

    71%- 80% Good quality but noticable pixelation, definitely run Deep Analysis as well as AEC setting of your choice.

    65%- 70% Can still be considered pretty good quality but be prepared to sacrifice fluidity during intense action, Deep Analysis and AEC settings a must.

    54%- 64% Acceptable copy but very pixelated, especially at high rates of motion. Absolutely run Deep Analysis and AEC to compensate for major quality loss.

    Never seen anything below 54%, so you probably do not need to worry about that. It's give and take, as is much of life, so find a formula that works for you and be willing to take some time to play around with your options. Try different settings, take notes of your results and maybe even keep a log of your burns. Eventually you will find your niche. :)

     

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