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Old 21st November 2020, 11:17   #21  |  Link
SeeMoreDigital
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I have stored all my DVDs as HEVC file on my NAS to stream it from there to my AppleTV....
HEVC in which container?

Doesn't the AppleTV 4K support the MPEG-2 video format?
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Old 22nd November 2020, 13:46   #22  |  Link
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HEVC in which container?
m4v

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Doesn't the AppleTV 4K support the MPEG-2 video format?
Not natively, but Infuse does. You are going to say, why not save the original rip on the NAS? I also did that, but the files are very huge, they can not be played natively on AppleTV and it takes several minutes with Infuse until the movie starts.
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Old 22nd November 2020, 13:56   #23  |  Link
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Hmmm....

Apple devices are far too anal for my liking
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Old 22nd November 2020, 14:37   #24  |  Link
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Hmmm....

Apple devices are far too anal for my liking
Tell me about it.. my last two straws were that they removed support for bitstreaming so bye bye Dolby Atmos, and true 24p (=24 fps) content is output like 23.976 fps content is
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Old 24th November 2020, 05:01   #25  |  Link
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Hmmm....

Apple devices are far too anal for my liking
And that is why I suggested a Shield. Apple devices are great if you only want to play in their world. As soon as you try to do anything outside of it, everything comes crashing down, hard. And yet people still flock to them because they believe they are the best. INFUSE does a great job of fixing these issues, but it's not a cheap fix, and it's one that should not be required.
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Old 24th November 2020, 09:44   #26  |  Link
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Why does the 10-bit HEVC contain only b-frames?
The question is rather why they are using P-Frames for 8 bit when they could use B as that would be more efficient.
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Old 24th November 2020, 10:35   #27  |  Link
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And that is why I suggested a Shield. Apple devices are great if you only want to play in their world. As soon as you try to do anything outside of it, everything comes crashing down, hard....
The media players in most smart TV's can play a wide variety of video and audio formats, and container types too. They do however have very poor looking user interfaces...
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Old 24th November 2020, 16:38   #28  |  Link
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The media players in most smart TV's can play a wide variety of video and audio formats, and container types too. They do however have very poor looking user interfaces...
They are often quite horrible. The standard player in my Sony doesn't support loading files over a network share so any DoVi stuff has to be played from a USB drive.

For a generic media player, I currently suggest an ODROID N2+ with CoreELEC. Sadly DoVi is not supported by Kodi yet, but maybe in the future once the SoCs start doing that in a larger scale.
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Old 26th November 2020, 03:39   #29  |  Link
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The media players in most smart TV's can play a wide variety of video and audio formats, and container types too. They do however have very poor looking user interfaces...
Most TV's still can't handle TRUEHD and subtitles. OMG subtitle support is so lacking. SRT works most of the time, but ASS, vobsub, PGS? HAHAHA. Apple TV is in the same boat, as it only supports SDH and captions I believe.
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Old 26th November 2020, 06:49   #30  |  Link
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"SDH / Captions" are content types, not file formats.

The Apple ecosystem (namely first-class delivery via HLS) supports delivery of timed text in 3 ways:

1) Embedded 608 closed captions (often used in live feeds repurposed from broadcast)

2) WebVTT

3) ISMC1 Text profile TTML


Most VOD content, from what I've seen and personally authored uses WebVTT due to simplicity. IMSC1 is quite powerful, but a bit more complex to author. Also from what I've seen, (1) is considered "captions", and (2) / (3) are considered "subtitles".

When it comes to subtitles, you can of course tag tracks with languages, but can also set the "forced" attribute to differentiate forced subtitles from regular subtitles / SDH.
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Old 3rd December 2020, 13:16   #31  |  Link
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The only Dolby Vision streaming device I know of is the 2020 Amazon Fire Cube, and who knows if that's hardware or not, they never tell us. Likewise whether or not it supports DoVi in external libraries instead of just Netflix/Prime/etc.
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Old 3rd December 2020, 20:56   #32  |  Link
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The only Dolby Vision streaming device I know of is the 2020 Amazon Fire Cube, and who knows if that's hardware or not, they never tell us. Likewise whether or not it supports DoVi in external libraries instead of just Netflix/Prime/etc.
What do you mean by "if that's hardware or not?"

I don't know of anything that does DoVi in user mode processing from an app, since DoVi involves a LOT of processing that has to happen in protected memory for DRM reasons, so it's handled at the OS level. Many SoCs do have HW support for Dolby Vision processing, but with sufficiently powerful CPU + GPU it could all be done in software.

I actually had a prototype DoVi implementation working on a quad-core 2015 ARM tablet that could do 1080p24, albeit without DRM support.

The AppleTV also supports Dolby Vision.
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Old 5th December 2020, 06:42   #33  |  Link
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Quote:
Originally Posted by foxyshadis
The only Dolby Vision streaming device I know of is the 2020 Amazon Fire Cube, and who knows if that's hardware or not, they never tell us. Likewise whether or not it supports DoVi in external libraries instead of just Netflix/Prime/etc.
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The AppleTV also supports Dolby Vision.
So does the latest and greatest Roku Ultra. And of course the Xbox. And Chromecast Ultra.

IIRC you can implement Dolby Vision playback in ExoPlayer on the new FireTV just like you would on an Android TV device (Sony, nVidia Shield, etc) streaming either DASH or HLS. You may need to use Amazon's fork of ExoPlayer as there were at least historically some customizations there for the Fire platform vs Android.

As Ben said, the system handles all the fancy stuff for you. Dolby Vision via HEVC has its own codec IDs (dvhe, dvh1) so from an application standpoint not much special generally has to be done.

Apple TV does a very nice job with Dolby Vision playback, and is my personal favorite streaming device for any HDR media (tho the remote is rage inducing at times). They have a robust hardware decoder and a powerful SOC resulting in a very smooth UI. They also have large buffers, and good ABR performance. They can even do a conversion from Profile 5 DoVi into HDR10 in real-time if you're using a TV with only HDR10 support. It's pretty clever - AFAIK they do IPT -> YCbCr without any tone mapping, and use the lowest level DoVi metadata to synthesize static HDR10 ST2086 metadata

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