streaming video in a pc world
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Digital Video Production Digital Video Production in a PC Worldin a PC World
Ways of getting it done!Ways of getting it done!
Types of MediaTypes of Media
MEDIAMEDIA VHSVHS 8 mm8 mm Hi-8Hi-8 SVHSSVHS Digital Hi 8Digital Hi 8 Mini DVMini DV Micro DVMicro DV DVDDVD
Cabling Cabling A/V RCA cables A/V RCA cables SVideo CableSVideo Cable
Stereo/Mono Audio Stereo/Mono Audio (RCA)(RCA)
Firewire CableFirewire CableDual Data lines=Fast transfer Dual Data lines=Fast transfer ratesrates
POWER
Pair 2 data flow
Pair 1 data flow
• Sony i-Link
Analog vs. DigitalAnalog vs. DigitalRead Articles:Read Articles: http://www.vbrick.com/WhitePapers/WhitePaper_AnalogVsDigitalhttp://www.vbrick.com/WhitePapers/WhitePaper_AnalogVsDigital
Video.pdfVideo.pdf
http://et.sdsu.edu/sphares/videowebpage/digitizing.htmhttp://et.sdsu.edu/sphares/videowebpage/digitizing.htm http://amo.net/NT/02-21-01ANADIG.html http://amo.net/NT/02-21-01ANADIG.html http://www.recordingconnection.com/resources-t-ad.htmlhttp://www.recordingconnection.com/resources-t-ad.html http://cameras.about.com/library/weekly/aa022501a.htmhttp://cameras.about.com/library/weekly/aa022501a.htm http://www.loronix.com/solutions/whitepapers/analogvsdigital.ashttp://www.loronix.com/solutions/whitepapers/analogvsdigital.as
pp
http://www.discovery.mala.bc.ca/web/schlombstj/Differences.hthttp://www.discovery.mala.bc.ca/web/schlombstj/Differences.htmm
http://www.fiber-optics.info/articles/analog-v-digital.htmhttp://www.fiber-optics.info/articles/analog-v-digital.htm http://www.vdoss.com/analogvsdigital.htmhttp://www.vdoss.com/analogvsdigital.htm http://www.marchnetworks.com/products/analogvsdigital.asphttp://www.marchnetworks.com/products/analogvsdigital.asp http://www.eco.utexas.edu/Homepages/Faculty/Norman/ECO361http://www.eco.utexas.edu/Homepages/Faculty/Norman/ECO361
N.Daily/Video.Editing/avd.htmN.Daily/Video.Editing/avd.htm
http://www.imakenews.com/designreview/e_article000099678.cfhttp://www.imakenews.com/designreview/e_article000099678.cfmm
http://www.vcdhelp.com/digitalvsanalog.htmhttp://www.vcdhelp.com/digitalvsanalog.htm
Capturing & Converting Analog Capturing & Converting Analog to Digitalto Digital
VHS, S-VHS, or High 8 VHS, S-VHS, or High 8 tapes = analog signaltapes = analog signal Digitize using Digitize using
software encoder & software encoder & video input devicevideo input device
Firewire 1394 CardFirewire 1394 Card
USB USB
Digital Input to ComputerDigital Input to Computer
Firewire 1394 Firewire 1394
Sony’s I-LinkSony’s I-Link
USB & converterUSB & converter
Digital AdvantageDigital Advantage
No Generational LossNo Generational LossDigital Audio (CD-quality)Digital Audio (CD-quality)No Static or “fuzziness”No Static or “fuzziness”Progressive-Scanned Image (not Progressive-Scanned Image (not
interlaced) = sharper image, no blurringinterlaced) = sharper image, no blurringCan Carry Non-video Data Layers for Can Carry Non-video Data Layers for
interactivityinteractivitySuperior Transfer of ColorsSuperior Transfer of Colors
What is Compression?What is Compression?
Video files are huge – need for Video files are huge – need for compression algorithms compression algorithms
Most Common:Most Common:MPEG-1 Small movie size, poor qualityMPEG-1 Small movie size, poor qualityMPEG-2 Decent at a reasonable file and MPEG-2 Decent at a reasonable file and
screen size – used for CD or Web-basedscreen size – used for CD or Web-basedMPEG-4 Near DVD quality with monitor-MPEG-4 Near DVD quality with monitor-
size moviessize movies
CodecsCodecs
A Codec is a coding method that A Codec is a coding method that facilitates the distribution and facilitates the distribution and smooth playback of digital movies. smooth playback of digital movies. This is apply when saving the movie This is apply when saving the movie before playback. Viewers are in before playback. Viewers are in stalled on the computer that employ stalled on the computer that employ the same codec.the same codec.
CodecCodecCodecCodec QualityQuality Typical UseTypical Use
IndeoIndeo Small enough for Small enough for Web playbackWeb playback
Quality movies that Quality movies that will be played back will be played back from the hard drivefrom the hard drive
CinePakCinePak Decent movie Decent movie quality at CD data quality at CD data ratesrates
Playback from CDs Playback from CDs on PCs and MACson PCs and MACs
SorensoSorensonn
Good quality Good quality moviemovie
Used with QT for Used with QT for both PC & MACsboth PC & MACs
DV-DV-NTCSNTCS
Very High QualityVery High Quality Used for transferring Used for transferring video clips from video clips from camcordercamcorder
H.261H.261 Decent over Decent over phone lines & phone lines & ISDNISDN
Used for tele conf.Used for tele conf.
File FormatsFile Formats
.AVI (Audio Video Interleave)-- Open .AVI (Audio Video Interleave)-- Open architecture so designers can include architecture so designers can include many types of compression and many types of compression and playback options to suit their playback options to suit their projects.projects.
.MOV --Quicktime is cross-platform .MOV --Quicktime is cross-platform compression that retains high compression that retains high quality.quality.
Streaming VideoStreaming Video
Server-based streaming video begins Server-based streaming video begins playback as soon as viewer opens playback as soon as viewer opens Web page. Each type of streaming Web page. Each type of streaming video format requires a special video format requires a special server-based deployment, server-based deployment, equipment, or development package.equipment, or development package.
Video StreamingVideo StreamingStreaming Streaming TypeType
BackgroundBackground Typical UseTypical Use
RealMediaRealMedia
RMRMRealNetworks RealNetworks proprietary -- proprietary -- viewer & viewer & developerdeveloper
Creates Web-based Creates Web-based or server-based or server-based streaming moviestreaming movie
Windows Windows Media Media Format Format (WMV)(WMV)
Free player, Free player, encoder, & encoder, & production production softwaresoftware
Creates Web-based Creates Web-based or server-based or server-based streaming movie.streaming movie.
QuickTime QuickTime (MOV)(MOV)
Free playerFree player Best quality Best quality generally speaking generally speaking than other two types.than other two types.
Cables, Cameras, Software, Cables, Cameras, Software, MoreMore
http://www.arp.sprnet.org/curric/http://www.arp.sprnet.org/curric/video/equipment_index.htm video/equipment_index.htm
Common Video Capture Common Video Capture Software FeaturesSoftware Features
Pre-record playback to screenPre-record playback to screen Digital Video Device Options (MS 1394, USB)Digital Video Device Options (MS 1394, USB) Compression Options (MPEG-4, MPEG-2)Compression Options (MPEG-4, MPEG-2) Renaming & Save File Location OptionsRenaming & Save File Location Options Direct Monitoring of the Recording ProcessDirect Monitoring of the Recording Process Playback of Recorded MoviePlayback of Recorded Movie Variations on the Video Capture ThemeVariations on the Video Capture Theme Special Effects (A/B roll, Titling, Digital Special Effects (A/B roll, Titling, Digital
Effects)Effects)
MS Producer FeaturesMS Producer Features
http://www.arp.sprnet.org/curric/video/http://www.arp.sprnet.org/curric/video/PowerPoint/MS_PRODUCER.pptPowerPoint/MS_PRODUCER.ppt
INSTALL: INSTALL: http://www.arp.sprnet.org/curric/video/insthttp://www.arp.sprnet.org/curric/video/installs/producer.exe alls/producer.exe
http://www.arp.sprnet.org/curric/video/http://www.arp.sprnet.org/curric/video/PowerPoint/Windows%20MediaPowerPoint/Windows%20Media%20Encoder%207.ppt %20Encoder%207.ppt
INSTALL: INSTALL: http://www.arp.sprnet.org/curric/video/insthttp://www.arp.sprnet.org/curric/video/installs/wmencoder71.exe alls/wmencoder71.exe
Windows Media Encoder Windows Media Encoder FeaturesFeatures