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Is TiVO artifically slowing down Stream transfers?

Discussion in 'TiVo Stream' started by Time_Lord, Nov 7, 2013.

  1. Dan203

    Dan203 Super Moderator Staff Member TCF Club

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    I saw as low as 22 minutes for a 720p show an as high as about 38 for 1080i and 480i. Maybe it's the scaling and deinterlacing. The shows end up being 720p for the iPad so a 720p source would require the least amount of processing.
     
  2. moyekj

    moyekj Well-Known Member

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    Mission...
    You can see the values using this URL (returns data in JSON format):
    http://<streamIP>:49152/sysinfo/json/advinfo
    (As Dan mentioned, you can't change them, just view them).
     
  3. mattack

    mattack Active Member

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    But other factors aren't being equal. AFAIK, the whole 'reason' for the stream is that the *hardware* is doing the reencoding, not a general purpose CPU.
     
  4. Dan203

    Dan203 Super Moderator Staff Member TCF Club

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    Yes but even special purpose chips like this should vary based on bitrate. I think the bottleneck is the image processing. Shows that need to be deinterlaced and resized seem to take longer then shows that are already 720p.
     
  5. Time_Lord

    Time_Lord Member

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    What I don't know is what is the realistic download speed of an iPad? I'm using an iPad Mini. A 500 MB file transmitting at constant 5Mb/s rate will take about 15 minutes to transfer.
     
  6. Dan203

    Dan203 Super Moderator Staff Member TCF Club

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    The download speed is irrelevant. This isn't like TiVoToGo where the show is being downloaded at it's original quality and the bottleneck is the network speed. These shows are being decoded, deinterlaced, scaled and then recoded to H.264 on the fly. Even on a high end PC that process can take 20-30 minutes per hour of content. The Stream can do that to 4 shows simultaneously.
     

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