[opendtv] Re: WTF is... H.265 aka HEVC?
- From: "TLM" <TLM@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 12 Apr 2013 15:49:58 -0700
At NAB Vanguard was showing a RT PC-based SW decode in their booth. Not
sure what type or config of PC, but it was a tower-type box. There were
others as well
A couple of months back Broadcom announced a new H.265 decoder chip.
http://www.broadcom.com/press/release.php?id=s732069
Knowing Broadcom, there will be a growing family of H.265/HEVC System on a
Chip chips that include everything from the HDMI 2.0 to the 802.11xx to the
memory interface, PVR I/O, and all kinds of other stuff, kinda like what
they've done for many other SoC chips for Blu-ray players, STBs and DTVs.
There will be many others. Encoders too.
BTW - I forget if I mentioned it, but Motorola was showing their 1RU rack
mount PC-Based H.265/HEVC encoder. Not sure what type or config of PC was
buried inside it but I know it was running the Vanguard encoder SW.
- Tom
Tom McMahon
Del Rey Consultancy
TLM@xxxxxxxxxx
WWW.DelRey.Com
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of Manfredi, Albert E
Sent: Friday, April 12, 2013 2:58 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: WTF is... H.265 aka HEVC?
TLM posted:
> Good write-up:
http://www.theregister.co.uk/2013/04/11/feature_wtf_is_h265_hevc/
The new information that was most interesting to me, in this article, was
that it takes 2X to 3X the computing power to decode H/265, and 10X more
power to encode it. When H.264 came out, requiring similar extra oomph
compared with H.263, my PCs of the time did not cope very well. Chronically
jerky video.
So I ask again, will today's typical quad-core PCs be up to the decode at
least? The article claims that multi-core GPUs are a better bet for H.265
than a simple increase in processor GHz, because the decode is amenable to
parallel processing.
For sure, since people will want H.265 for their own videos, this will
generate a whole new push for higher speeds in PCs, smartphones, and
tablets, even if decoding takes less of an effort. The world has changed in
this regard. I don't see as much of an advantage in cheap decode and
expensive encode anymore, as there once was, perhaps.
Bert
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