large file size for some using aTV2 settings?

Discussion in 'Apple TV and Home Theater' started by penguy, Nov 26, 2011.

  1. macrumors 6502

    Joined:
    Feb 20, 2007
    Location:
    CA
    #1
    I'm still new at ripping/encoding, but I've completed about 50 of my DVDs at this point...

    so here's my question...

    looking back at the file sizes of those encoded using :apple:TV2 settings, I found one that is surprisingly large, the Looney Tunes Golden Collection, vol 4. The file size is 2.9 GB with a bit rate of 160 and a total bit rate of 3575...and a running time of 1hr46min.

    Most of the movies I've encoded have ended up with a total bit rate of 1400-1700, and the file sizes are less than 2gb. Could I have just hit the wrong preset? Does handbrake leave any indication of the preset used to encode? or is there something about particular DVDs that cause you to end up with a larger file size?
     
  2. macrumors 68020

    Joined:
    Mar 27, 2003
    #2
    EDIT: Presuming your using HandBrake ....

    Yes, in the individual activity log for that encode.
    The preset uses constant quality encoding. Noisy and grainy sources will tend to blow up bitrate. Clean sources ... not so much. It wouldn't be that odd for a an older grainy source. Maybe re-encode it at an rf of about 22 or 23 and see if it looks as good but you will get a smaller file size and bitrate.
     
  3. macrumors 68000

    Joined:
    May 6, 2004
    #3
    I have seen this too, glad to hear it was the film grain, which is what I assumed.

    The film Pi on DVD which was originally filmed on grainy black and white 16mm film jumped to over 3GB with the AppleTv 2 preset.
     
  4. macrumors newbie

    Joined:
    Oct 29, 2011
    #4
    Personally, I use the original Apple TV settings if I am ripping a DVD - I can't notice a difference and it comes in at about half the file size.

    Try doing a 10 min clip using both the old Apple TV and the ATV2 settings and compare, see if it makes a difference to you. If not use the old Apple TV settings and save the space.
     
  5. thread starter macrumors 6502

    Joined:
    Feb 20, 2007
    Location:
    CA
    #5
    Thanks, I'll try that on the next one.

    ----------

    thanks...I tried 23, and the file size dropped by almost half, but I cannot tell the difference on my 42"
     
  6. macrumors 68020

    Joined:
    Mar 27, 2003
    #6
    Hmm, on a dvd source the atv 2 preset should return the smaller file size, it uses more advanced compression options which the atv 1 cannot decode. Something seems strange that on the exact same source you are getting half the file size with the atv 1 preset than the atv2 preset.
     

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