HEVC Versus H.264 Encoding Performance

Let's take a look at how the assorted encodes perform. Throughout the following section, all encodes were made exploitation Handbrake with the settings as mentioned, with the exception of the Nvidia encodes, which were performed using StaxRip. My syntactic category rig was used for examination, which is equipped with a unpretentious Intel Core i5-3570 quad-essence CPU at 3.4 GHz, 16 GB of DDR3 memory board, and an Nvidia GeForce GTX 980 Te.

The following presets were tested:

  • H.264 Custom: Settings listed along Page 3, QF 23
  • H.264 Handbrake Deafult: x264 Rattling Fast, Main Profile, Level 4.0, QF 23
  • HEVC Medium: x265 Metier Preset, QF 23, default otherwise
  • HEVC Quicker: x265 Faster Preset, QF 23, default on otherwise
  • HEVC Metier: x265 Medium Preset, QF 23, default otherwise
  • HEVC Medium QF 15: x265 Medium Preset, QF 15, default otherwise
  • HEVC Slow: x265 Slow Planned, QF 23, default on other than
  • Nvidia HEVC: CQP mode at default settings

For our Bet on of Thrones mental testing file, in that respect is a lot that can be deduced from the in a higher place information. Firstly, the x265 Faster predetermined was significantly slower than the Ultrafast planned, while actually delivering less compression. Secondly, the x265 Slow predetermined was staggeringly slower than the Medium predetermined, while delivering a very similar file size. Naturally this says nothing about quality, which we volition search later, but purely supported this data it's very easy to remove the Quicker and Dense presets from contention.

It's likewise simply obvious that the Nvidia HEVC encoder is importantly quicker than anything else ascribable its ironware encoding advantage. IT creates a slenderly larger HEVC-encoded file in than Handbrake's default H.264 settings in under uncomplete the time. Also, looking for at the Efficiency Grade (final file size * encoding time) metric linear unit, which essentially evaluates the compression efficiency in a lower-is-Charles Herbert Best fashion, information technology understandably blows away the competition.

If you're after the smallest file accomplishable, HEVC Medium beats my bespoken, superior-quality H.264 settings in file size (information technology's 56% smaller) with an encode that took 38% longer. It's also more efficient than the HEVC Easy preset, merely falls behind the Ultrafast predetermined, which delivers a 21% larger file in 63% less clock time.

The overall winner will still need to be resolute by quality, just there are already whatsoever clear winners: Nvidia's HEVC encoder is the virtually economic, and the HEVC Medium preset does the optimal job of compression. For those without a current-gen Nvidia GPU, the HEVC Ultrafast preset is looking good. From these results it's steely to see why you would vex encoding in H.264 unless you were more concerned about compatibility than compression.

It's a similar story looking for at encodes of The Gigantic Bang Theory. Nvidia's HEVC encoder created a decent file size in a very scurrying time of just four minutes, at a whopping 158.6 frames per second. Again, the Quicker preset is slower and delivers less compression than the Ultrafast preset, while Medium is looking same a solid depend for the smallest file size.