Transkodiranje digitalnog videozapisa iz formata H.264/AVC u HEVC

undergraduate thesis

• Title (english): Transcoding of Digital Video from H.264/AVC Format to HEVC
• Author: Marko Mikšić
• Mentor: Sonja Grgić (mentor)
• Committee member: Sonja Grgić (predsjednik povjerenstva)
• Committee member: Tomislav Kos (član povjerenstva)
• Committee member: Jelena Božek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2017-07-10, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing

Abstract

U radu je objašnjena opća struktura videokodera, opisane su glavne značajke HEVC videokodera uspoređujući neke tehnike kodiranja s AVC videokoderom. Provedena je usporedba kvalitete slike nastale kodiranjem AVC i HEVC videokoderom. Objašnjen je sustav za transkodiranje te vlastiti dizajnirani sustav za uspoređivanje kvalitete. Koristeći alat FFmpeg, objašnjene su naredbe koje omogućuju izvođenje kodiranja, transkodiranja te računanja vrijednosti za određivanje kvalitete slike (PSNR). Izneseni su razlozi i zahtjevi koje treba zadovoljiti postupak transkodiranja. Računajući kvalitetu transkodiranih videosekvenci, izvedeni su zaključci o tome na koji način postupak transkodiranja utječe na kvalitetu slike.

Abstract (english)

This paper presents the general video encoder structure. The main features of the HEVC video encoder are described and compared to the AVC video encoder features. A comparison of image quality between video sequences encoded with AVC and HEVC was performed. The transcoding system was described as well as the system for quality measurement. Instructions for encoding, transcoding and image quality measurement (PSNR) are described using the FFmpeg tool. Reasons and requirements to be met for the transcoding process are presented. After calculating the transcoded video sequences quality, conclusions about the way in which the transcoding process affects image quality are made.

• Keywords: AVC; FFmpeg; HEVC; kompresija; PSNR; transkodiranje; usporedba kvalitete videozapisa; usporedba videokodera; videokoder
• Keywords (english): AVC; compression; FFmpeg; HEVC; PSNR; transcoding; video encoder; video encoder comparison; video sequences quality comparison
• Language: croatian
• URN:NBN: urn:nbn:hr:168:256173
• 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: 2019-03-13 23:05:39