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Uncompressed video is digital video that either has never been compressed or was generated by decompressing previously compressed digital video. It is commonly used by video cameras, video monitors, video recording devices (including general-purpose computers), and in video processors that perform functions such as image resizing, image rotation, deinterlacing, and text and graphics overlay.
The following is a simplistic illustrated explanation of how motion compensation works. Two successive frames were captured from the movie Elephants Dream.As can be seen from the images, the bottom (motion compensated) difference between two frames contains significantly less detail than the prior images, and thus compresses much better than the rest.
The frame rate refers to how often a new field is shown per second. At 50 Hz, 50 fields are shown each second. This results in 25 full frames per second when the odd and even fields are combined. At 60 Hz, 60 fields are shown per second. This results in 30 full frames per second. Interlacing affects how motion is perceived in 1080i.
With doubled temporal resolution, 576p50 is considered enhanced-definition television (), regardless of the image being scaled the same way as an interlaced frame.In some countries, such as Australia, the 576p resolution standard is technically considered high-definition [10] [11] and was in use by the Special Broadcasting Service (SBS TV), eventually replaced by 720p for its high-definition ...
HDCAM deck HDCAM L tape. SMPTE 367M, also known as SMPTE D-11, is the SMPTE standard for HDCAM. The standard specifies compression of high-definition digital video. D11 source picture rates can be 24, 24/1.001, 25 or 30/1.001 frames per second progressive scan, or 50 or 60/1.001 fields per second interlaced; compression yields output bit rates ranging from 112 to 140 Mbit/s.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!
2:2 pulldown is widely used in 50 Hz interlaced television systems to broadcast progressive material recorded at 25 frame/s, but is rarely used in 60 Hz systems. The 2:2 pulldown scheme had originally been designed for interlaced displays, so fine vertical details are usually filtered out to minimize interline twitter. PsF has been designed for ...
Depending on particular camera make and model and on post-production process, HDV footage could be rated as Silver HD, Bronze HD, or widescreen SD. [49] In particular, some users considered Canon HDV camcorders to deliver the best-looking image with the least amount of compression artifacts among the models having 25 Mbit/s MPEG-2 HD codec.