![]() ![]() ![]() Unlike analog formats, which are tied directly to analog NTSC and PAL TVs, there are many more encoding variables in HD digital formats. In addition to editing the content, there are often one or more format conversions between the video capture and the final viewing format. HD content reaches the user via the Internet, broadcast TV, satellite TV, cable TV or Blu-ray disc. In the past, tape cassettes were the recording medium. The digital formats are captured on camcorders and transferred to the computer via memory card, storage drive or uploading via cable or wireless. In the past, high-definition analog TV systems were developed however, their usage was miniscule compared to the standard-definition (SD) analog NTSC, PAL and SECAM TV formats (see HD analog formats and SD formats). HD formatsFollowing is a summary of high-definition (HD) digital video formats, which provide 720 or 1080 lines of resolution.
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