video recording
DESCRIPTION
Video Recording. Analog Video. Video Recording. Color space. Video Recording. Analog Composite Component S-Video Digital format UnCompressed (SDI) Compressed (MPEG). Video Recording. Magnetic Tape. Magnetic coating on Plastic Iron Oxide coating Chromium di-oxide. Analog Formats. - PowerPoint PPT PresentationTRANSCRIPT
Video Recording
• Analog Video
Video Recording
• Color space
Video Recording
• AnalogCompositeComponentS-Video
• Digital formatUnCompressed (SDI)Compressed (MPEG)
Video Recording
• Magnetic Tape Magnetic coating on Plastic
Iron Oxide coating
Chromium di-oxide
Analog Formats
• Tape HeadsRecording Heads – Soft Iron/FerritePlayback Heads Erase Heads
Video Recording
• Tape Head
Video Recording
• Magnetic Domain
Video Recording
• Magnetic Domain
Video Recording
• Magnetic Recording
Video Recording
• Hystersis
Video Recording
Analog Formats
• AnalogVHSAmpexU-MaticBetacam
Video Recording
• Tape SpeedQuadruplexHelical spanSpeed of the tape
o Audio 4.75 cm/so Video 10 m/s
Video Recording
Ampex VR2000
Video Recording
Video Recording
Video Recording
Video Recording
• Control TrackEach frame – Synchronize scan & tape
speedDropouts – Defective magnetic particlesDiscontinuous trackGeneration loss
Video Recording
• Digital Picture formatsUncompressed
o BMPo TGAo TIFF
Compressedo JPEGo GIFo GIF (Animated)
Video Recording
Video Recording
• Computer based RecordingUncompressed Compressed
o DVo MPEG 1, 2o Movo AVIo Mpeg4o WMV
Video Recording
• Digital Videoo SDIo DVo MPEGo WMVo Flash
Video Recording
• DV Format (1995) Intraframe, InterlacedDCT13.5:6.75720 X 576 (704 active)4:1:1 / 4:2:016bit/12bit Linear/Nonlinear PCM AudioDIF (Digital Interface Format)
o 80byte, 150 blocks (Sequence), 10-12 seq a frame
o AVI, MOV, MxF
Chroma Sub-sampling
Video Recording
• DVCPRO (1995) PanasonicLocked Audio4:1:125Mbps
• DVCPRO 50 (1997)Locked Audio4:2:250Mbps
Video Recording
• DVCAM (1996) SonyLocked Audio
Video Recording
• DigiBetaDCT Component Video10bit YUV 4:2:290Mbps, 4 Uncompressed 20bit PCM
AudioSDI
Video Recording
• DigiBeta SX (1996)Digital version of Betacam SPMPEG-2 4:2:222Mbps (approx), 4 Uncompressed 16bit
PCM AudioAlternate frames are I-frame & B frameCassettes Yellow
Video Recording
• MPEG IMX (2001)MPEG-2 4:2:230, 40, 50Mbps, 8 Uncompressed 16bit
PCM Audio IntraframeSDTIMuted green tapes
Video Recording
• HDCAM / HDCAM SR (1997)1080i8bit DCT, 144Mbps1440 X 1080 -> 1920 X 10804 AES 20bit
Video Recording
• HDCAM SR (2003)10bit 4:2:2 or 4:4:4MPEG4 - Part21920 X 108012 Audio Channels, 24bitSDTIMuted green tapes
Video Recording
• D1 (1986) ¾”Uncompressed digital component video Y’CbCr – 4:2:2, 8bit
• D1Composite video
• D5 HD (Panasonic)10bit
Video Recording
• Advantages of Computer based Recording Cassette-free Network sharingEditing friendly
Video Recording
• EditingLinear Editing Non Linear
o Hardware basedo Software basedo Codec
Video Recording
• Non Linear EditingWindows Movie makerAvidVelocityAdobe PremierFinal Cut Pro
Video Recording
Video Recording
• Advantages of Non Linear EditingRecord OnceRandom AccessEDLExport
Video Recording
• System RequirementsHigh end computer hardwareGood quality video cardHuge Hard DiskThroughput
Video Recording
• NLE StorageLocalNASSAN