[opendtv] Re: WTF is... H.265 aka HEVC?
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sat, 13 Apr 2013 09:58:46 -0400
On Apr 12, 2013, at 5:58 PM, "Manfredi, Albert E"
<albert.e.manfredi@xxxxxxxxxx> wrote:
> 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.
>
I still remember when the broadcast industry pundits thought that MPEG-2 and HD
would protect them from the same fate as the audio industry, which was
transformed in the '80s to new computer based production tools. They honestly
believed that the processing requirements for HD and MPEG-2 would require
dedicated hardware for years, if not decades. Ironically, desktop computers and
software evolved so rapidly that HD production and MPEG-2 encoding were
commonplace years before most consumers had an HDTV.
H.264 was quickly adopted into GPU cores, providing both decoding and encoding
capabilities - even smartphones can handle decent HD production and encoding
today. H.265 will be no different. Most GPUs probably have enough horsepower to
deal with h.265 today, but it will take a bit of time for the software to catch
up.
As for encoding, expensive versus cheap is all about "time." Most consumer
applications are NOT realtime, thus waiting a few minutes to encode the video
you just shot, so you can upload it to YouTube is no big deal.
Regards
Craig
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