MP4 Movies not syncing

Discussion in 'Apple TV and Home Theater' started by appleguy, Apr 16, 2007.

  1. appleguy macrumors 6502

    appleguy

    Joined:
    Aug 23, 2002
    Location:
    Auckland, NZ
    #1
    I downloaded some HD MP4's from Nasa's website
    http://www.nasa.gov/multimedia/videogallery/hd_index.html
    they loaded ok into itunes but wouldnt sync down to my AppleTV saying they AppleTV doesnt support the format type.

    any ideas here
    I wish to thank inadvance the MacRumors Brain Trust
     
  2. appleguy thread starter macrumors 6502

    appleguy

    Joined:
    Aug 23, 2002
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    #2
    I should add that I downloaded the Higher Res quicktime HD version of each file. 2 of them came down as MP4's
     
  3. 7on macrumors 601

    7on

    Joined:
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    Dress Rosa
    #3
    :apple:tv does not support that largea resoultion of a file. AKA won't play back HD.
     
  4. appleguy thread starter macrumors 6502

    appleguy

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    #4
    I have other HD files that worked ok.
     
  5. 7on macrumors 601

    7on

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    #5
    maybe the NASA files are at a hgiher bitrate?
     
  6. appleguy thread starter macrumors 6502

    appleguy

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    #6
    ok I will have a play with Visual Hub and get content down to the same as the other HD movies I have
     
  7. appleguy thread starter macrumors 6502

    appleguy

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    Auckland, NZ
    #7
    Feel free to slap me

    Done digging and found this

    H.264 and protected H.264 (from iTunes Store): Up to 5 Mbps, Progressive Main Profile (CAVLC) with AAC-LC audio up to 160 Kbps (maximum resolution: 1280 by 720 pixels at 24 fps, 960 by 540 pixels at 30 fps) in .m4v, .mp4 and .mov file formats
    iTunes Store purchased video: 320 by 240 pixels or 640 by 480 pixels
    MPEG-4: Up to 3 Mbps, Simple Profile with AAC-LC audio up to 160 Kbps (maximum resolution: 720 by 432 pixels at 30 fps) in .m4v, .mp4 and .mov file formats
     
  8. The General macrumors 601

    Joined:
    Jul 7, 2006
    #8
    Those videos will not play on the AppleTV. They are 1280x720@60fps. You need to convert them to 1280x720@24fps, then they will work. :)

    If you need help with that, feel free to ask.
     
  9. appleguy thread starter macrumors 6502

    appleguy

    Joined:
    Aug 23, 2002
    Location:
    Auckland, NZ
    #9
    Thanks
    I got them to work
    I used Visual Hub
    although they didnt work on the 1280x720@24
    but they did at 960x540@30
     
  10. appleguy thread starter macrumors 6502

    appleguy

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    Auckland, NZ
    #11
  11. appleguy thread starter macrumors 6502

    appleguy

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    Auckland, NZ
    #12
  12. The General macrumors 601

    Joined:
    Jul 7, 2006
    #13
    Very strange indeed ... I used those settings and am watching the NASA video on my AppleTV right now. :confused:
     
  13. lostless macrumors 6502

    Joined:
    Oct 22, 2005
    #14
    Im suprised how the apple TV refuses to play anything above 30FPS. It has been shown that it uses quicktime, which plays back 60FPS just fine. Heck, even the ipod plays 60FPS just fine. 60FPS is standard TV when deinterlaced proplerly (ive found a way to deinterlace 30FPS interlaced into a 60FPS progressive file. The power of JES deinterlacer). 60FPS is 720P and 1080P standard. I guess fluid motion is a long lost memory. Ahh memories. Maybe apple will see the light and allow 60FPS on the apple tv via firmware upgrade or somthing.
     
  14. appleguy thread starter macrumors 6502

    appleguy

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    #15
    Sweet. going fine now
     
  15. spacepower7 macrumors 68000

    Joined:
    May 6, 2004
    #16
    It seems the HDTV is still confusing to alot of people.

    Lostless
    When you say 60 FPS are you meaning frames per second or fields per second? 2 fields = 1 frame

    North American TV, even HDTV is all broadcast at 29.97 frames per second or 59.94 fields per second. Currently there is no broadcast of any 1080p material. The only 1080p material is HD-dvd and Blu-Ray. The fastest 1080p available to the public is 1080p at 24 frames per second.

    I haven't heard of a TV (any consumer TV) that can display more than 29.97 frames per second (59.94 fields per second) except for the really old black and white TVs that were built before the color broadcast tv system. The old system was 30 frames per second (60 fields per second) which is related to North American power supply of 60Hz/110 voltage. European (and other parts of the world) PAL and Secam frame/field rates are related to their voltage. PAL/SECAM is 25 frames per second/ 50 fields pers second in accordance to their 50Hz/220 voltage

    Sometimes the more we learn the more confused we get. I know that I do.
     
  16. 7on macrumors 601

    7on

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    #17
    Unless it's a hardware limitation
     

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