parametri audio video

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Parametri audio video Mihai Oniţa

Post on 23-Jan-2018

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  1. 1. Parametri audio video Mihai Onia
  2. 2. Istoric 2/14
  3. 3. 3/14
  4. 4. Producie Video link: Tipuri de camere video, Anthony Q. Artis 4/14
  5. 5. Eantionare i cuantizare Eantionare Cuantizare Byte-bii Valori posibile 1 byte (8 bii) 256 (28) 2 bytes (16 bii) 65 535 (216) 4 bytes (32 de bii) 232 8 bytes (64 de bii) 264 Adncime de bit Bith depth 5/14
  6. 6. Eantionare temporal i spaial a imaginii Cadre pe secund Video frame rate Rezoluie video Video frame size 6/14
  7. 7. nregistrare audio digital Sunet surround 7.1 Video link: Amplasare sistem 5.1 Rata de eantionare Sampling rate 7/14
  8. 8. Spaii de culoare 8/14
  9. 9. Standarde 9/14
  10. 10. SD TV - PAL Denumire Rezoluie Raport aspect NTSC-M (SD) 720 480 3:2 PAL-I (SD) 720 x 576 4:3 sau 5:4 HD Ready 1280 x 720 16:9 full HD 1920 x 1080 16:9 4K 3840 x 2160 16:9 8K 7680 4320 16:9 Raport de aspect Aspect ratio 10/14
  11. 11. Rezoluii SD - HD SDHD Rezoluie Rata de bit audio* Rata de bit video** 720p 1280 x 720 512 Kbps 384 Kbps 128 Kbps 4000 Kbps 2500 Kbps 1500 Kbps 1080p 1920 x 1080 512 Kbps 384 Kbps 128 Kbps 6000 Kbps 4500 Kbps 3000 Kbps 4K, 3840 x 2160 512 Kbps 384 Kbps 128 Kbps 35-45 Mbps * 5.1, stereo, mono ** maxim, recomandat, minim Video link: Descriere Ultra HD 4K Link: Progresiv (p) sau ntreesut (i)? Rat de bit Bit rate 11/14
  12. 12. Formate i codecuri Format i codec Container and codec 12/14
  13. 13. Formate i codecuri 13/14
  14. 14. Rezoluie Spaiu de culoare Rata de bit Raport de aspect FPS Format