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My free sx web cam

The first camera to use this media was the Sony PMW-EX1 professional video camera.In December 2009, Sony introduced the more affordable Sx S-1.

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The Professional Disc was chosen by Sony as its medium for professional non-linear video acquisition for a number of reasons, outlined in their white-paper Why Sony Adopted Professional Disc.This format supports multiple frame sizes, frame rates, scanning types and quality modes.Depending on product line or a particular model, not all modes of this format may be available.This disc is similar to Blu-ray Disc and holds either 23 GB of data (PFD23, single-layer, rewritable), 50 GB (PFD50, dual-layer, rewritable), 100 GB (PFD100TLA, triple-layer, rewritable) or 128 GB (PFD128QLW, quad-layer, write-once).Essentially, the Professional Disc format was deemed to be a suitable, cost effective and easy step forward.Tapeless camcorders that record onto solid-state memory cards, use MP4 container for high definition audio/video, and DV-AVI container for DV video.

JVC camcorders that use XDCAM EX recording format, are also capable of recording into Quick Time container besides using MP4 container.

MPEG IMX allows recording in standard definition, using MPEG-2 encoding at data rate of 30, 40 or 50 megabits per second.

Unlike most other MPEG-2 implementations, IMX uses intraframe compression with each frame having the same exact size in bytes to simplify recording onto video tape.

Sony claims that at 50 Mbit/s it offers visual quality that is comparable to Digital Betacam MPEG IMX is not supported in the XDCAM EX product line.

MPEG HD is used in all product lines except for XDCAM SD.

This unit is designed to have the same performance as the Sx S Pro card however its life expectancy is shorter at an estimated 5 years of life when used every day to the card's full capacity. These have a 1.2 Gbit/s read and write speed to support the PMW-F55 in storing 4K 60p acquisition.