Analiza performansi H.265 kodera

undergraduate thesis

• Title (english): Performance analysis of H.265 encoder
• Author: Domagoj Vidović
• Mentor: Vlado Sruk (mentor)
• Committee member: Vlado Sruk (predsjednik povjerenstva)
• Committee member: Lea Skorin-Kapov (član povjerenstva)
• Committee member: Danko Ivošević (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2016-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Glavna problematika Interneta je strujanje višemedijskog sadržaja putem mreže. Izvorni video sadrži preveliku količinu podataka, te ga je prije strujanja potrebno pretvoriti u drugi oblik manje veličine kako bi korisnik imao najbolje iskustvo pri pregledavanju sadržaja.
Analizom kodera videa H.265 proučeni su i prikazani osnovni koraci i metode kodiranja. Objašnjeni su osnovni pojmovi potrebni za shvaćanje rada, poput kodera ili samog video sadržaja. Osim zasebne analize samog H.265 kodera, po potrebi su ubačene usporedbe s njegovim prethodnikom, koderom H.264, te eventualne mane i prednosti za određenu kategoriju.
Objašnjen je algoritam kodiranja koderom H.265 i njegove metode. Analiza je podijeljena u 2 dijela. Prvi dio analize obuhvaća „vidljiv“ sadržaj video zapisa, odnosno podjelu na blokove, zapis vektora gibanja i ostale elemente. Drugi dio analize proveden je uporabom alata Intel VTune Amplifier, a obuhvaća utjecaj na procesor, memoriju i priručnu memoriju. Provedenom analizom ustanovljeno je da je kvaliteta i veličina video sadržaja kodiranog HEVC-om poboljšana u odnosu na prethodnika, ali isto tako je povećana uporaba hardverskih komponenti.
Osim toga, dodatno je ispitan utjecaj otpornosti na ispade paketa u mreži. Provedenim ispitivanjem pokazano je da je HEVC manje otporan na gubitak paketa u lošijim mrežnim uvjetima.

Abstract (english)

Main problem of Internet is streaming multimedia content over the network. Raw video size is too big, so it has to be converted to another format before streaming over the network.
Analysis of H.265 coder shows basic steps and methods of encoding. It contains explanations of some basic terms, like coder or video files. Occasionally, H.265 coder is compared to it’s predecessor, H.264 coder, representing advantages and disadvantages of a certain category.
Paper explains coding algorithm and it’s methods. Analysis is divided into 2 parts. First one covers „visible” part of video content, like division on blocks, motion vectors and other elements. Second part of analysis is performed with Intel Vtune Amplifier tool, which explains influence of video content on CPU, memory and cache. Performed analysis indicate greater quality and smaller video size comparing to it's predecessor, but it also indicate needs for stronger hardware components.
The paper also includes additional analysis of resistance to packet-loss over the network. Analysis indicate that HEVC coder is less resistant to packet-loss than it's predecessor.

• Keywords: analiza performansi; koder H.265; strujanje kroz mrežu
• Keywords (english): H.265 coder; network streaming; performance analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:168:359945
• Study programme: Title: Computing; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 14:18:39