New Video exports for QuickTime coming for iPad?

Discussion in 'Apple TV and Home Theater' started by jaw04005, Jan 27, 2010.

  1. jaw04005 macrumors 601

    jaw04005

    Joined:
    Aug 19, 2003
    Location:
    AR
    #1
    iPad supports video at:

    "H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats”

    Apple TV supports video at:

    "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, 640 by 480 pixels, 720 by 480 pixels (anamorphic), or high-definition 720p
    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”

    iPhone supports video at:

    "Video formats supported: H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats"
     
  2. Cave Man macrumors 604

    Cave Man

  3. zedsdead macrumors 68040

    Joined:
    Jun 20, 2007
    #3
    Wow 720/30p! Never thought apple would offer that...maybe they can get their act together and make an apple tv capable of this.
     
  4. jaw04005 thread starter macrumors 601

    jaw04005

    Joined:
    Aug 19, 2003
    Location:
    AR
    #4
    Or just ship a software update that enables it. 1280x720/30 FPS @ 5 Mbps is doable on the current hardware.

    If you have a hacked Apple TV, you can try it for yourself.

    However, I’m not sure what the difference between “Progressive Main profile” and just “Main profile” is. One may be more GPU/processor intensive to decode than the other.

    Maybe Dynaflash or nightstrm will chime in on this discussion.
     
  5. tom1971 macrumors 6502a

    Joined:
    May 15, 2007
    #5
    How do you do that ?
     
  6. Shoesy macrumors 6502a

    Shoesy

    Joined:
    Jun 21, 2007
    Location:
    Colchester, UK.
    #6
    load it up using nitoTv and watch it choke (no hardware decode support)
     
  7. dynaflash macrumors 68020

    Joined:
    Mar 27, 2003
    #7
    Current atv can do High Profile in stock form. The specs on apples site are way low imo.

    From one of many atv encodes I have done with HB for the Atv:

    x264 [info]: profile High, level 3.1

    x264 doesn't lie.
     
  8. dynaflash macrumors 68020

    Joined:
    Mar 27, 2003
    #8
    Very easy, basically for starters you can just run the existing atv preset. Though scale up to 720p since it will not have the 540p at 30 fps limitation the atv has. Current Atv Preset plays on the existing 3G iPod touch so should be no problem at all for the iPad.

    I have run 720p at 30 fps on an atv. It works fine unhacked, due to gpu decoding. Wouldn't be surprised if an iTunes update for the iPad also lets 720p @ 30 fps transfer to atv as well. Otoh, who knows what apple will do.
     
  9. jaw04005 thread starter macrumors 601

    jaw04005

    Joined:
    Aug 19, 2003
    Location:
    AR
    #9
    That would be nice for my EyeTV OTA encodes! No more 1080i or 720p shrunk down to 540p because of the 24FPS limitation.
     
  10. zedsdead macrumors 68040

    Joined:
    Jun 20, 2007
    #10
    If the content is 1080i, such as NBC, you can export a MPEG Program Stream which preserves the original file with 5.1. Then run this through handbrake with the detelecine filter on, fps set to 23.98, and size at 1280x720.

    This does not work for 720p though (fox/abc) as the pulldown isn't recognized correctly.

    I never understood the lack of 720p30 on the Apple TV. It was a very stupid decision from day one. What's more pathetic is that it's been over 3 years without a hardware update.

    I also imagine that the iPad is capable of 1080p playback since the iPhone is, it's just not enabled.
     

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