Next-Gen Video Encoding: x265 Tackles HEVC/H.265

[Sagittaire]

And I test x264 with the same sequence but with the best possible setting and at 2000 kbps I find 38.5 dB for x264 (~38 db for x264 and 39 dB for x265 at your test)

 

[InvalidError]

For the small increase in quality or what seems to be 20-25% less file size (?) for the same quality this just isn't worth multiple times more electricity used to get the work done.

The same could be said about h264 and 480p video. Once you step up to 720p and beyond, h264's advantages over earlier codecs become much more significant.

Similarly, the main reason for h265 isn't the 25% gain at 1080p or lower; it is the much larger gains beyond 1080p where h264's more limited motion search range, smaller tile size and other technical limitations become significant performance handicaps for both quality and bitrate.

 

[eodeo]

Wow h265! I didn't expect to see h264 successor so soon, even though it has been 10 years since the original introduction. Tempus fugit...

Still, h264 was so advanced for its time. I'm very exited about 265!

 

[grandleaf]

Not sure if my CPU can handle this.

 

[booyaah]

Screw H.265, hell screw H.264.

$4m/year for content providers to license it? $1m for developers to license software using H.264 and the cost is only rising. Stupid proprietary codecs should have no place on the web going into the future.

I really hope that open source WebM keeps blowing up at the rate it currently has been, and ends up stomping out proprietary AVC codecs from the web for good.

 

[dogmang]

We need to stop screwing around with DCT and move to a Wavelet based compression standard.

 

[nobody123]

JFYI, latest x265 testing builds are available at https://x265.cc

 

[Temerald]

OK. I've been using Handbrake beta 6562_x86_64 and spent time optimizing my computer I built around a i7-3770K. I've been focusing on getting my numbers up with x265, I got Intel QuickSync working and that brought my HD average frame rates from 16fps up to 24fps. My next item on my to-do was a five hour video that I mastered to DVD with chapters. The video on the DVD isn't so great as I halved the video to 352i so it would fit on a Dual layer DVD. Fortunately I still have the 65GB uncompressed avi file but the DVD has chapters. and Because of HandBrake's lack of chapter control and lack of multiple input source control, I needed to make two mkv files. One in x265 from my raw avi file and one quick one from the DVD. So I chose to fall back to x264 for the DVD so after they are both done, I can mux the x265 video with the chapter files from the DVD. To my complete surprise, with QuickSync on, the half height DVD was converted by Handbrake at a whopping average 1,941 FPS!.. It finished the entire five hours of video in four minutes thirty one seconds. QuickSync rocks and was easy to enable. That alone took a while, because I could not find a single web site with decent instructions. .. SO here they are. Note: You need an IVY bridge CPU or newer with Intel QuickSync technology. 1) Go into your bios and enable multi monitor. 2) Get Intel's auto driver update and let it grab the video drivers and install them. 3) Go into your display properties and press detect monitors, you don't even have to have a monitor plugged into the motherboard, in the properties window, select a VGA output and extend your desktop to that monitor and you're done!.. Of course my numbers are aided by my motherboard's ability to idle my CPU at 1.6G and spins it up to 4.4G when it senses a load.