DVL-Digest 1799 - Postings: Index DV vs MPEG2 please advice DVCPRO Jan? Your thoughts? Lightining for a newbie Panasonic PV GS200 DV vs MPEG2 please advice - "Perry Mitchell" This subject is a rather interesting insight for the whole video applied microprocessor industry. In the past, the best video codecs were related to tape formats and then digital broadcasting. The specification needed to be agreed over extended periods of interested party negotiations (endless committee meetings!) and subsequent hardware design and system implementation would further delay actual use. The result is that the codecs we currently use are all designed from another era of electronic processor power. DV (potentially) uses a quite sophisticated set of algorithms to provide good picture quality with a reasonable compression efficiency within the intraframe and fixed data rate environment. It was designed for a dedicated chip processor cheap enough for use in consumer cameras. Using an interframe algorithm (i.e. MPEG)would have considerably extended the efficiency but the resulting processor demands would have been impractical. Take away the fixed data rate environment of tape and add modern processing power, and MPEG is clearly a potential winner. However, the advances in all things electronic (reducing cost as well as increasing power) mean that the very raison d'aitre of digital compression start to be questioned. If you can record full uncompressed video on say a blue laser DVD-R, and even a consumer PC has enough storage and umph to be able to post it, then it begs the question of whether digital compression will be necessary for acquisition? This of course is related to standard definition video (SD). Hi-Def (HD) is a new ball game in the same stadium but playing with newer bats - so algorithms can be more sophisticated and are still necessary to cope with the much higher data demands of HD. All this is my rather meaningless ramblings - but perhaps an indication that it is very difficult to project current formats into the future. VHS has lasted 30 years because it is locked into mass market players and program rental business. DV will go the way of Betamax and V2000 and disappear within a decade. MPEG2 is locked into DVDs and digital broadcasting, so will be around much longer. It is anyway a general group of compression schemes that can be better tailored for the latest hardware and demands a flexible approach to NLE software that is better suited to future longevity. FWIW Perry Mitchell DVCPRO - "Crittenden, Jan" > You are currently subscribed to dv-l. To unsubscribe, send a > blank email to leave-dv-l@dvcentral.org > ------------------------ > > -- (cut off when replying) ----- > Subscribe, unsubscribe, etc.: http://dv-l.org > Sponsors: http://dvcentral.org/Sponsors.htm > Critical problems: mailto:postmaster@dvcentral.org > -------------------- > Jan? Your thoughts? - "Crittenden, Jan" > You are currently subscribed to dv-l. To unsubscribe, send a > blank email to leave-dv-l@dvcentral.org > ------------------------ > > -- (cut off when replying) ----- > Subscribe, unsubscribe, etc.: http://dv-l.org > Sponsors: http://dvcentral.org/Sponsors.htm > Critical problems: mailto:postmaster@dvcentral.org > -------------------- > Lightining for a newbie - "Perry Mitchell" From:Catalin Braescu Sent: 26 February 2004 10:32 To: DV-L Subject: [dv-l] Lightining for a newbie Dear list colleagues, I'm a newbie to (digital) video, coming from digital photo shooting and editing. I will have to shoot and post produce some interior shows (a music Top and some similar stuff). I tried to use my two lights I'm regularly using when photoshooting but on video they are clearly underpowered. So now I am kindly asking you to point me to an online tutorial on lightning for video, lightning in a TV studio, color temperature, hints & tips & tricks (please don't indicate books because being in Romania / Eastern Europe I do not have access & money for Amazon... yet). Many thanks in advance for any help! Catalin Braescu CALLASTIA. Audio, video & IQ Panasonic PV GS200 - "Crittenden, Jan" > You are currently subscribed to dv-l. To unsubscribe, send a > blank email to leave-dv-l@dvcentral.org > ------------------------ > > -- (cut off when replying) ----- > Subscribe, unsubscribe, etc.: http://dv-l.org > Sponsors: http://dvcentral.org/Sponsors.htm > Critical problems: mailto:postmaster@dvcentral.org > -------------------- > (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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