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13th November 2013, 14:53 | #1 | Link |
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NRT Encoding claims to save 40% bandwidth retain the same quality of h264 broadcasts?
I've come across this article in which a company claims to have developed a solution to reduce bandwidth consumption by up to 40% whilst retaining the same quality of h264 broadcast. Does anyone have any idea how this is done?
http://svgeurope.org/blog/headlines/...to-sky-italia/ |
13th November 2013, 15:12 | #2 | Link | |
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Unless they provide a sample that shows 40% bandwidth reduction at the same quality, compared to other top-notch H.264 encoders (like x264), they can claim a lot
Also this seems to be targeted explicitly to VoD (Video on Demand) services. Furthermore, it seems that the 40% reduction is achieved for transmitting various encodes of the same movie for different devices... Quote:
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13th November 2013, 15:38 | #3 | Link | |
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No, in the past it was aimed at VoD and some other services but now it is also used on some HD channels transmitted via satellite in their DTH bouquet on the Hotbird satellite.
The main part of that article seems to be this: Quote:
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14th November 2013, 00:19 | #4 | Link | |
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Quote:
Getting a 40% ABR improvement by using CRF instead of CBR wouldn't be remarkable. |
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14th November 2013, 00:42 | #5 | Link | |
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Quote:
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15th November 2013, 00:37 | #7 | Link |
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Perhaps some compressed domain transcoding? I looked at a company doing things like this. Sadly, it broke HRD which is a big no-no for STBs.
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15th November 2013, 19:06 | #8 | Link |
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Yeah, encoding is pretty much all psycho-visual techniques.
Just because something doesn't show up in PSNR doesn't mean it's not psychovisual. Tons of tuning for the human visual system happened before the source frame even gets provided to the codec! |
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