Forum de la Tribu Carmine - Carmine Tribe - Sciences Arts Astronomie BOINC HydroLAB
 
AccueilAccueil  Navigation_Rapide  RechercherRechercher  ÉvènementsÉvènements  FAQFAQ  MembresMembres  S'enregistrerS'enregistrer  ConnexionConnexion  
 

 H.265 - CODEC

Aller en bas 
AuteurMessage
invisibleDesign
Carmine
invisibleDesign

Messages : 174
Diamonds : 1309
Réputation : 1
Date d'inscription : 22/11/2017

H.265  -  CODEC Empty
MessageSujet: H.265 - CODEC   H.265  -  CODEC EmptySam 11 Jan 2020 - 14:00

-




H.265
-

HEVC offers from 25% to 50% better data compression
-
It supports resolutions up to 8192×4320, including 8K UHD,
and unlike the primarily 8-bit AVC, HEVC's higher fidelity Main10 profile
has been incorporated into nearly all supporting hardware.

In a subjective video performance comparison released in May 2014
-
The average bit rate reduction for HEVC was 52 -64 = ± 58 % en moyenne
52% for 480p,
56% for 720p,
62% for 1080p, and
64% for 4K UHD


On October 25, 2016, Nvidia released
the GeForce GTX 1050Ti (GP107) and GeForce GTX 1050 (GP107),
which includes full fixed function HEVC Main10/Main12 hardware decoder.

On September 25, 2017, Apple released macOS High Sierra with HEVC encoding & decoding support.

On September 28, 2017, GoPro released the Hero6 Black action camera, with 4K60P HEVC video encoding.


On October 17, 2017, Microsoft removed HEVC decoding support from Windows 10 with the Version 1709 Fall Creators Update, making HEVC available instead as a separate download from the Microsoft Store.[109]

On November 2, 2017, Nvidia released the GeForce GTX 1070 Ti (GP104), which includes full fixed function HEVC Main10/Main12 hardware decoder.





In a subjective video performance comparison released in May 2014, the JCT-VC compared the HEVC Main profile to the H.264/MPEG-4 AVC High profile. The comparison used mean opinion score values and was conducted by the BBC and the University of the West of Scotland. The video sequences were encoded using the HM-12.1 HEVC encoder and the JM-18.5 H.264/MPEG-4 AVC encoder. The comparison used a range of resolutions and the average bit rate reduction for HEVC was 59%. The average bit rate reduction for HEVC was 52% for 480p, 56% for 720p, 62% for 1080p, and 64% for 4K UHD





High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2,
is a video compression standard,
designed as a successor to the widely used Advanced Video Coding (AVC, H.264, or MPEG-4 Part 10).

In comparison to AVC, HEVC offers from 25% to 50% better data compression
at the same level of video quality,
or substantially improved video quality at the same bit rate.

It supports resolutions up to 8192×4320, including 8K UHD,
and unlike the primarily 8-bit AVC, HEVC's higher fidelity Main10 profile
has been incorporated into nearly all supporting hardware.

HEVC is competing with the royalty-free AV1 coding format for standardization
by the video standard working group NetVC of the Internet Engineering Task Force (IETF).[1][2]

While AVC uses the integer discrete cosine transform (DCT)
with 4x4 and 8x8 block sizes, HEVC uses integer DCT and DST transforms
with varied block sizes between 4x4 and 32x32.

The High Efficiency Image Format (HEIF) is based on HEVC.[3] As of 2019,
HEVC is used by 43% of video developers,
and is the second most widely used video coding format after AVC.




-
Revenir en haut Aller en bas
Voir le profil de l'utilisateur
 
H.265 - CODEC
Revenir en haut 
Page 1 sur 1

Permission de ce forum:Vous ne pouvez pas répondre aux sujets dans ce forum
CarmineTribe :: ------------ < ------ invisible Design ------ > ------------ :: ------------ < ------ VideoLAB ------ > ------------ :: VideoLAB-
Sauter vers: