claimed 7 hours 10 minutes full brightness video playback??

Discussion in 'Microsoft Surface Pro 3' started by tony8154, Dec 23, 2014.

  1. tony8154

    tony8154 Member

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    has anyone been able to replicate such an outcome??

     
  2. jnjroach

    jnjroach Administrator Staff Member

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    Using a Modern UI App with hardware encoded MP4, I could see this. I was able to use my SP3 on my flight from Seattle to Toronto to Heathrow watching videos and listening to music for well over 8 hours.....(putting it in Connected Standby at times), the total trip was well over 13 hours and I arrived with about 16% battery.
     
  3. tony8154

    tony8154 Member

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    could you please explain what hardware encoded Mp4 means?

    I understand the mp4 video file type, but I'm not sure what you mean by hardware encoded.

    thank you
     
  4. jnjroach

    jnjroach Administrator Staff Member

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    MP4 files can use the GPU rather than the CPU for rendering which allows for better battery life, AVI and WMV files typically render in software (CPU) which will drain the battery faster.
     
  5. tony8154

    tony8154 Member

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    so does this also mean that if i convert an mkv/avi file to mp4 it will also use less battery?
     
  6. jnjroach

    jnjroach Administrator Staff Member

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    Potentially...it is all on how you encode them, most conversion programs have settings that allow for Hardware Encoding. My understanding of mkv is it just a wrapper and the payload can be a MP4 file....
     
  7. GreyFox7

    GreyFox7 Super Moderator Staff Member

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    Right mkv is a container and can potentially have multiple things in it including subtitles, notes, & malware :)
     
  8. ctitanic

    ctitanic Well-Known Member

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    Mp4 a container too ;)
     
  9. ctitanic

    ctitanic Well-Known Member

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    Mkv can be hardware decoded too. All depends on how are you encoding it. If you are using H.264 for video codec and AAC for audio codec most likely the will be decoded using hardware, and that depends on the video player that are you using and its configuration.

    Capture.JPG
     
    Last edited: Dec 23, 2014
  10. ctitanic

    ctitanic Well-Known Member

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    About the claim, with brightness at 100% I think it's very hard mark but still possible.
     
  11. nipponham

    nipponham Active Member

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    Interesting test. I checked out the person's YouTube page and he had some more info.
    I'm not really all that surprised at the result since I can watch a 2-hour movie and and still have more than 80% battery left, (albeit at 40% brightness or so.) I might do some testing of my own over the holidays when I have time. It's just about that time to recalibrate my battery meter:)
     
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  12. nipponham

    nipponham Active Member

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    I think you mean hardware decoded, right? i.e. hardware acceleration? Whether the video was hardware or software encoded should not have an effect on final playback. I believe the issue here is whether the codec/container used in the video supports hardware acceleration.
     

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