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 streamFL, (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

DVDrip – TorrentFreak

Trending Posts...

How to Setup and Enable Real Debrid in Kodi Krypton

Setup/Enable Real Debrid in Krypton Due to the increase in popularity of Real Debrid Accounts, more and more Developers are coding their Add-ons to Enable this feature. But what is Real Debrid and what can it do for me you ask? Well I would suggest you read this excellent blog on the topic, it changed my mind after reading it. Click here .  If you are interested in acquiring an account, please use this link for Real Debrid . It’s recommended to establish an account prior to continuing. Where to start ? There are many Blogs and articles on the Internet about how to enable RD, but for a change this one will be about how to Enable RD in Krypton 18, Leia. While still in Alpha build, there are some interesting new features to view. But I would recommend waiting until Leia has been released in Beta before installing and trying to use. This was installed on a PC, W/10 for the ease of creating the screenshots needed. So lets begin : After opening Kodi Krypton 17 / Leia 18, select th...

Updating Your Add-ons and Repositories in Kodi

Updating Add-ons / Repositories Updating your list of Add-ons and Repositories is the best way to ensure Kodi is functioning properly. Rather than checking, many newcomers think it’s better to just Uninstall the Add-on/Repo and reinstall it again. Totally unnecessary for many reasons. Consider this, if your vehicle runs out of fuel, would you replace it with another of the same make and model ? Of course not, you would find a way to fill it with fuel and carry on. Therefore, updating the Add-ons/Repos is like refueling your vehicle. This is another topic in our continuing effort to help the newcomers/beginners to the world of Kodi. You can view many more Blogs on a wide assortment of helpful topics here at Ares-Project Blog . Updating Repositories Rather than send an update for a single add-on that may be in a repo, the Dev will send one for the entire repo. It faster, more convenient and above all it saves time. Yet how do you know if your repo is up to date? Here are two exampl...

Enabling Lyrics in Krypton from your Personal Music Files

Krypton has Lyrics for My Music ? Did you know you could enable Lyrics in Krypton ? Absolutely ! Once you have enabled your personal music files turn your Kodi Krypton into your own Karaoke Machine! Occasionally when researching information for these articles, we come across something that makes you stop and think. While working on recent Blog on how to add your personal music files to krypton. ( link )  I stumbled across an Icon that seemed strange and out of place really. Something that I have never seen before. So here I was checking out the results of adding my Music Files for a blog, I happened to notice this new Icon. (see photo above) Due to being so curious I selected it to see where it would take me. Keep in mind before returning to the main home page, I had already selected a song to play. As shown in the top right corner, ♫ Fool In The Rain ♫ by Led Zeppelin. Locating Lyric Icon What do I see ! the Krypton Music Player! Now in my defense, I don’t use th...

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 ...

Guide to Installing Kodi: Beginner's Edition

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. The What As we said we are going ...