DVDs use MPEG-2 compression to record the moving pictures (25-29 frames per second). Audio can be in a variety of formats including PCM, DTS, MP2 or AC3. PAL players require at least one of PCM, MP2 or AC3 formats. DVDs can contain more than one channel of audio to go with the video.
Some DVD players will also play raw mpg files, these are "unauthored" and lack the file and header structure that defined DVD VIDEO. Audio, video and so forth are multiplexed into VOB (Video Object) container format. EVO stands for Enhanced VOB.
Sunday 27 December 2009
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