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Video-Codecs &
   Kompressionen
Unerwartete Faktoren im Produktionsprozess




                                        Christian Geier
                                                      1
Abtastraten


              Christian Geier
                            2
Abtastraten
• 4:4:4 Professionelles   • 4:2:2 Professionelles
  Digitalformat,            Digitalformat, Rot-
  Helligkeit, Blau und      und Blau-
  Rot identisch bei         Differenzanteile
  jedem Pixel (D1)          werden in jedem
                            zweiten
                            Zeilendurchlauf
                            aufgezeichnet
                            (DigiBeta)


                                            Christian Geier
                                                          3
Abtastraten
• 4:1:1 Semi-           • 4:2:0 Hobby-
  Professionelles         Digitalformat, Rot-
  Digitalformat, Rot-     und
  und Blau-               Blaudifferenzanteile
  Differenzanteile        werden nur in jedem
  werden in jedem         geraden
  vierten                 Zeilendurchlauf
  Zeilendurchlauf         aufgezeichnet (4:2:2),
  aufgezeichnet,          im ungeraden nicht,
  Datenreduktion 50%      Datenreduktion 50%
  (DVCPro)                (DV)
                                          Christian Geier
                                                        4
Aufnahmemedien


                 Christian Geier
                               5
Aufnahmemedien
• HDV (Canon, Sharp,       • DV (fast alle):
  Sony, JVC): (Mini-)DV-     (Mini-)DV-
  Videokassetten,            Videokassetten,
  1080x720,Video =           720x576, Video =
  MPEG2 (Interframe          DCT (Intraframe
  Compression, LGoP),        Compression), Audio
  Audio = MPEG1              = ev. unsynchron
  Audio Layer2               (48kHz, 16Bit), 16:9
  (48kHz, 16Bit), nur        oder 4:3, fest 25Mbps
  16:9, max. 25Mbps

                                               Christian Geier
                                                             6
Aufnahmemedien
• AVCHD (v.a.           • DVCProHD
  Panasonic & Sony):     (Panasonic): DVCPro-
  SD-Speicherkarten &    Bänder oder P2-
  8cm-DVDs, 1080i        Karten, 1080i oder
  oder 720p,Video =      720p, Video = DCT
  MPEG4 (Interframe      (Intraframe
  AVC/H.264), Audio =    Compression), Audio
  Dolby Digital (AC3)    = synchron (48kHz,
  oder Linear-PCM,       16Bit), 16:9, max.
  16:9, max. 24Mbps      100Mbps

                                       Christian Geier
                                                     7
Aufnahmemedien
• XDCam (Sony): SxS-      • P2HD (Panasonic):
  Speicherkarten &          P2-Karten, 1080i oder
  Professional Disc,        720p, Video = MPEG4
  1080i,Video = MPEG2       (AVC-Intraframe
  (Interframe LGoP,         Compression), Audio
  variabel oder             = k.A., 16:9, max.
  konstant in Bitrate),     100Mbps
  Audio = 16Bit,
  48kHz, 16:9, max.
  35Mbps; div. Formate

                                           Christian Geier
                                                         8
Speichermedien


                 Christian Geier
                               9
Speichermedien
•   DV-HDV-Band (DCT         •   CF-Card (MPEG2)
    oder MPEG2-Kompr.)
                             •   P2-Card (DCT oder H.
•   DVCPro-Band (DCT)            264)

•   Betacam-Band (DCT        •   SD-SDHC-Card (H.264)
    oder MPEG4)
                             •   GF-Pak (diverse)
•   Professional Disc (DCT
    oder MPEG2)              •   Wechselfestplatten
                                 (diverse Kompressionen)
•   SxS-Card (MPEG2)

                                                    Christian Geier
                                                                 10
Exportcodecs


               Christian Geier
                            11
Exportcodecs

• Apple
• Windows
• Real
• Sonstige

                      Christian Geier
                                   12

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2008_Video_Codec_Kompressionen

  • 1. Video-Codecs & Kompressionen Unerwartete Faktoren im Produktionsprozess Christian Geier 1
  • 2. Abtastraten Christian Geier 2
  • 3. Abtastraten • 4:4:4 Professionelles • 4:2:2 Professionelles Digitalformat, Digitalformat, Rot- Helligkeit, Blau und und Blau- Rot identisch bei Differenzanteile jedem Pixel (D1) werden in jedem zweiten Zeilendurchlauf aufgezeichnet (DigiBeta) Christian Geier 3
  • 4. Abtastraten • 4:1:1 Semi- • 4:2:0 Hobby- Professionelles Digitalformat, Rot- Digitalformat, Rot- und und Blau- Blaudifferenzanteile Differenzanteile werden nur in jedem werden in jedem geraden vierten Zeilendurchlauf Zeilendurchlauf aufgezeichnet (4:2:2), aufgezeichnet, im ungeraden nicht, Datenreduktion 50% Datenreduktion 50% (DVCPro) (DV) Christian Geier 4
  • 5. Aufnahmemedien Christian Geier 5
  • 6. Aufnahmemedien • HDV (Canon, Sharp, • DV (fast alle): Sony, JVC): (Mini-)DV- (Mini-)DV- Videokassetten, Videokassetten, 1080x720,Video = 720x576, Video = MPEG2 (Interframe DCT (Intraframe Compression, LGoP), Compression), Audio Audio = MPEG1 = ev. unsynchron Audio Layer2 (48kHz, 16Bit), 16:9 (48kHz, 16Bit), nur oder 4:3, fest 25Mbps 16:9, max. 25Mbps Christian Geier 6
  • 7. Aufnahmemedien • AVCHD (v.a. • DVCProHD Panasonic & Sony): (Panasonic): DVCPro- SD-Speicherkarten & Bänder oder P2- 8cm-DVDs, 1080i Karten, 1080i oder oder 720p,Video = 720p, Video = DCT MPEG4 (Interframe (Intraframe AVC/H.264), Audio = Compression), Audio Dolby Digital (AC3) = synchron (48kHz, oder Linear-PCM, 16Bit), 16:9, max. 16:9, max. 24Mbps 100Mbps Christian Geier 7
  • 8. Aufnahmemedien • XDCam (Sony): SxS- • P2HD (Panasonic): Speicherkarten & P2-Karten, 1080i oder Professional Disc, 720p, Video = MPEG4 1080i,Video = MPEG2 (AVC-Intraframe (Interframe LGoP, Compression), Audio variabel oder = k.A., 16:9, max. konstant in Bitrate), 100Mbps Audio = 16Bit, 48kHz, 16:9, max. 35Mbps; div. Formate Christian Geier 8
  • 9. Speichermedien Christian Geier 9
  • 10. Speichermedien • DV-HDV-Band (DCT • CF-Card (MPEG2) oder MPEG2-Kompr.) • P2-Card (DCT oder H. • DVCPro-Band (DCT) 264) • Betacam-Band (DCT • SD-SDHC-Card (H.264) oder MPEG4) • GF-Pak (diverse) • Professional Disc (DCT oder MPEG2) • Wechselfestplatten (diverse Kompressionen) • SxS-Card (MPEG2) Christian Geier 10
  • 11. Exportcodecs Christian Geier 11
  • 12. Exportcodecs • Apple • Windows • Real • Sonstige Christian Geier 12