Skip to main content

H.265 HEVC and H.264, Understanding the Difference

 H.265 HEVC and H.264


The Goal of this article is to help you understand some of the new technology that is having a direct affect on Movie Quality and Streaming on your device. One in particular is the new Compression Format called H.265 or HEVC. What the on earth is that you ask ? Here’s some background that will help you understand, without getting to “techie”….. I hope.

What is H.265 aka HEVC.


HEVC (High Efficiency Video Coding, sometimes called H.265) is a new video compression format and is the successor of H.264. It was formalized on the 25th of November 2013 and published as ISO/IEC 23008-2:2013. An open source HEVC decoder and encoder (x265) has been developed and is widely adopted.
High Efficiency Video Coding (HEVC), also known as H.265, promises twice the compression possible with Blu-ray’s best video compression methods. But how does it work, and is it enough to get us better-looking 4K content?

HVEC vs H.264


A technical comparison (with thanks Ana Rodrigues) : Both codecs work by comparing different parts of a video frame in order to find the ones that are redundant within the subsequent frames. These areas are replaced with a short information, describing the original pixels. What differs HEVC/H.265 from H.264 is the ability to expand the size of these areas into bigger or smaller blocks, called coding tree units (CTU) in the HEVC/H.265.
  • The pattern CTU sizes can be from 4×4 to 64×64, whilst H.264 only allows a maximum block-size of 16×16 (CTU is particular feature of HEVC).

  • An improved CTU segmentation, as well as a better motion compensation and spatial prediction require much more signal processing capability for video compression. But has a significantly less impact on the amount of computation needed for decompression.

  • Motion compensated prediction, another great progress in HEVC/H.265, references blocks of pixels to another area in the same frame (intra prediction) or in another frame (inter prediction).

H.264


So how does all of this affect you the end user? Lets show you some examples of H.264 v H.265.
The following was done on a Clean version of Krypton (no build) Movies were Blade Runner 2017 & Star Trek Into Darkness. The device was a PC with W/10 in order to create these screenshots.

hevc

Once you have selected the media file and depending on what Fork of Kodi you have installed, you should be able to see some of the basic bits of Information relating to the File. The “Kato” Fork of Kodi Krypton for Windows was used for this article.
  • As shown above, you can see the the Audio is 5.1

  •  DTS (Digital Theater Systems)

  •  ratio of 2:40:1

  • and the Compression of H.264 ( or MPEG-4 part 10)

Letter O


hevc

To achieve the screen above, Select the Letter O on the keyboard while the movie is playing as shown in the photo above. There are Four areas of Information that are of interest. For this article we will focus on those indicated by the Red Dot.
  1. Video decoder-ff.h.264

  2. Video stream– 1920 x 800 px (resolution) 2.40 ar (Average Video Rate) 23.976 FPS (Frames per second)

  3. Audio stream– FL, (front left) FR, (front right) FC, (front center) LFE, (low frequency effect or Sub Woofer) SL, (surround left) SR, (surround right).

  4. System CPU usage– Probably one of the most important bit of information shown that many overlook. The higher the % the higher the load is on the device, this is a direct cause of buffering/stuttering/freezing. One way to ease this load is to use the Advanced Wizard Settings in Ares Wizard. Enable the recommended settings suggested by the Wizard based on the specs of the device you have it installed in. Keep in mind these settings will differ from one device to another, eg. a PC will have different recommendations than say an Android Box or a FireStick.


 



 

CTRL + shift + Letter O


hevc

There is another Option while viewing a Movie. At the same time press CTRL + shift + Letter O on the keyboard. This information will always appear in the top left corner of the screen :
  1. aq 99%- (Audio Queue saturation) Kb/s 1474.29 (current audio bitrate reported by player)

  2. vq 99%- (Video Queue saturation) Mb/s 3.89 (current video bitrate reported by player) fr:23.976- (frame rate) drop: 0, skip:3 (three frames have been skipped)

  3. Player: a/v :0.017 (Audio/video sync difference real time)

H.265 HEVC


 

hevc

Now lets compare H.264 with H.265. While at first glance both versions appear to be the same, there are some very important figures that will stand out as we move along.
  • Audio is 7.1

  • AAC (advanced audio coding. comparable to MP3, but much better)

  • 1:78:1 ratio

  • H.265 or HEVC (High Efficiency Video Coding)

Letter O


hevc

Just like the other example used, once your movie has started, click the Letter O to acquire the information shown above.
  1. Video decoder : indicates ff-hevc (SW)

  2. Video Stream :  3840 x 2160 px which is 4 times 1080p or True 4K Resolution.  Most noteworthy is the Video stream shown in the H.264 example, 1920 x 800. Wait a second you say ! I thought I was viewing a 4K stream. This was not done intentionally on my part but felt it was important to include. What has happened is you have selected a stream that is “Up-scaled” 1080p. All of this really only matters if you have a 4K Resolution TV Set. But on a “regular” TV there isn’t much of a difference in the quality.

  3. Audio Stream :  Because this is  7.1, compared to the other example there are two more channels added. BL ( back left) and BR (back right). Unless you have a Surround Sound Home Theater Movie System, there’s not to much to get excited about….. But if you do ! It does make a difference.

CTRL + shift + Letter O


hevc

This is where it gets interesting, especially relevant are the :
  • aq 99%- (Audio Queue saturation) Kb/s 270.47 (current audio bitrate reported by player) Compared to the H.264 of  1474.29.

  • vq 99%- (Video Queue saturation) Mb/s 1.26 (current video bitrate reported by player) Compared to the H.264 of  3.89.

hevc

In Conclusion


H.265 will soon be the dominant Compression Standard in the industry. A simple analogy is to imagine you have a Bushel of Apples. You need to fit 100 apples inside. You can do it with more compression (reducing the apples to sauce), or with better compression (finding a better way to make them all fit, but preserving their “appleness”).
More compression: applesauce (H.264)
Better compression: more apples, same space (H.265)

As data-intensive as HD is, 4K is even worse. While most of us were just getting used to the idea of H.264’s advantages over MPEG-2 on Blu-ray, the Motion Picture Experts Group and the International Telecommunication Union’s Telecommunication Standardization Sector (ITU-T) were already starting work on the next generation of video compression, with an eye on the future.
So the next time you have issues with Streaming, make sure the Compression is not H.265, your device may only be designed for H.264. Nothing wrong with Kodi, the Add-on or the Build. Just change to a source that has H.264, most have that information listed and it’s easy to read.

I hope you have enjoyed this Blog as much as I have in creating it. Please join us in the Ares Project Forum where you can ask more about this topic and many more. It’s free to Join and our staff are always there to help in a drama and bully free Forum.

Comments

Post a Comment

DVDrip – TorrentFreak

Loading...

Trending Posts...

How to Calibrate Kodi Add-ons using Real Debrid

How to Calibrate Add-ons with Real Debrid First off, to get the most out of this article you are going to want to have (Re) Authorized your Real Debrid in URL Resolvers.  Then we can focus on how to calibrate add-ons with Real Debrid to enhance your experience.  Some of you may be asking yourself what Real Debrid is and if you are one of those people take a look at here . Yet, others are asking themselves what add-ons use Real Debrid currently and how do I calibrate them?  Popularity in Kodiland has spiked in the past year and consequently servers are getting busier.  Hence many are turning to other sources for their streaming needs inside Kodi.  As a result of this gain in users there has been a need for other alternatives.  The popularity of using a Real Debrid account is growing dramatically as the price is cheap enough and what you receive is well worth in. (in my opinion at least). Kodi Add-ons with Real Debrid The demand for utilizing Real Debrid has ...
Post a Comment
Read more

Guide to Installing Kodi: Beginners Edition Part 3

Kodi, A Guide for New Users This next article is going to be an all-in-one guide on how to set up Kodi from where to find it to how to install an add-on. This guide will serve to partner with the theme of creating helpful articles for the everyday, new Kodi user. We will focus on keeping the language understandable and hope this article helps teach you something new. By the end of this article we will have answered the what, where, and how to install Kodi, along with a repository, and an add-on. You may or may not be aware; however, the community is ever changing especially in the recent 12 months. More and more developers and groups have been shut down, received cease & desist letters, or have grown frustrated by treatment from other community members.  This has made it tougher to find the reliable all-in-one build as your go-to builder could hang it all up.  So our goal is for this guide to help you sit in the driver seat. Continuing with our series, Part 3 of the guide ...
Post a Comment
Read more

How to Disable/Enable Debug Logging in Krypton

Debug Logging in Kodi Krypton What is the debug log? A debug log can record database operations, system processes, and errors that occur when executing a transaction or running unit tests. Debug logs can contain information about: Database changes. HTTP callouts. Apex errors.  “Sometimes you might be asked to enable additional  debug logging “components”, which is an option in this same Settings/System/ Debugging  area. If you were not asked to enable anything extra, then don’t worry about those additional settings. Restart  Kodi : so that the  log  file records important startup information.” (excerpt from kodi wiki) Kodi-Wiki Log file . Disabling Debug Logging Occasionally a new user will start Kodi for the first time after purchasing a “loaded” Android Box and encounter some very odd looking numbers at the top of their screen ! “Is my Kodi Broken?”. No this is not a scene fro...
Post a Comment
Read more

Kodi Audio Settings: Understanding the Options Available

Advanced Audio Settings The object of this Blog is to provide as much Information about the Audio Settings in Kodi/SPMC with out making it look like the Tech Specs. of an “Audiophiles” Sound System. I have to admit when I first looked in XBMC/Kodi, these options left me scratching my head. Thinking these are very complicated. Well they still do ! But once the different features and options were explained to me, it became quite easy. Understanding how to utilize these to enhance my use of Kodi/SPMC became a bit clearer. I certainly hope this article will do the same. Not just for those who have just started using Kodi, but for “veterans” as well who wish to know more about these settings. *Hint, if you make a mistake (and you will) when changing any settings, remember….Default is your friend. You can always start over. Need help? click here . The examples shown are Jarvis 16.1. I will also provide a brief description on how to find Audio Settings in Krypton...
Post a Comment
Read more

WiFi Settings & Tweaks

I thought I’d cover the one of the most talked about issues in the world of streaming and thats WiFi and how to get the best out of it, practical measures and not some of the voodoo you read on some forums! What is WIFi? The term Wi-Fi refers specifically to the IEEE 802.11 set of standards for wireless networks. Several different standards are designated by a letter suffix on the 802.11, such as in 802.11g or 802.11n. In general all of the 802.11 standards operate on either a 2.4GHz or 5GHz radio frequency. 5GHz has much greater speed capability but a reduced range; generally speaking the lower a frequency the further it will travel, so don’t expect miracles if you switch to 5GHz. A key thing to note here is that if ANY device uses the older “b” standard then ALL devices *could* have their speed reduced to 11mbps on “g” networks, depending on your router. This really applies to older equipment or cheap equipment with old parts used in it *cough* t...
Post a Comment
Read more