1 / 12

Contributie van videomateriaal voor broadcast

Contributie van videomateriaal voor broadcast. Klaas-Pieter Looren de Jong. Onderscheid, begripsafbakening Samenhang, afhankelijkheid Toepassingsgebied. enc. enc. dec. enc. Contributie vs. distributie. Compressie. Bandbreedte, HD, SD Data reductie MPEG2 D10 MPEG4 / H.264

tacita
Download Presentation

Contributie van videomateriaal voor broadcast

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Contributie van videomateriaal voor broadcast Klaas-Pieter Looren de Jong

  2. Onderscheid, begripsafbakening Samenhang, afhankelijkheid Toepassingsgebied enc enc dec enc Contributie vs. distributie

  3. Compressie • Bandbreedte, HD, SD • Data reductie • MPEG2 • D10 • MPEG4 / H.264 • Kwaliteitsverlies, bewerking, GOP, 4:2:0 4:2:2 • Delay

  4. 1 generation encoding & decoding 1000 generation encoding & decoding Verlies, reproduceerbaarheid • Lossy encoding • Near lossless encoding • Lossless encoding

  5. Unrestrained 75Mbps 50Mbps 25Mbps Compressie bij contributie • JPEG2000 • Wavelet transformatie, filtering • Schaalbaarheid

  6. JPEG2000 • SD vs. HD, autodetecting • Praktische waarden bandbreedte gecomprimeerd signaal • Delay karakteristieken, voordelen JPEG2000

  7. Audio formaten • AC3 (5.1), MPEG1/L2, AAC, ……….. • Meerdere audio kanalen, ondersteuning SDI standaard • Conversie en uitwisselbaarheid

  8. Compressie in de productieketen • Cascaderen van codecs • Effecten voor audio en video • Verliezen, typische kenmerken • Codering, content beveiliging

  9. a x Unicast b y c z a x Multicast b y c z a x Smallcast b y c z One stream Video stream is copied Standaardisering • Internationale standaards • Koppelvlakken • Merkonafhankelijkheid

  10. Challenge Solution Jitter Properly designed buffer algorithm in receiver Out-of-order packets RTP protocol Packet loss Forward Error Correction Algorithm such as Pro-MPEG FEC Uncorrected Packet loss Error concealment algorithm Foutcorrectie • Forward Error Correctie • Netwerk integriteit, QoS • COP3R2, COP4

  11. JPEG2000 compr. video Linear audio etc. Control traffic for management MXF • MXF Encapsulation • For collecting data for a video field Telnet HTTP SNMP RTP • RTP Layer • Used to number packets in sequence TCP UDP • UDP Layer • UDP port used to differentiate between streams Transport layer - IP • IP Layer • Routing by IP address Link layer – 10/100/1000 Base-T Ethernet • Ethernet physical layer • MAC address • Layer 2 routing Transport protocollen • IP (UDP, RTP) • ATM • Overig

  12. Afsluiting • Conclusie • Eventuele vragen en opmerkingen • Demo JPEG2000 compressie

More Related