Acceptable Video Format For Digital Signage
Content format for Digital signage
NTSC and PAL
National Television System Committee (NTSC) and Phase Alternation Line (PAL) are worldwide video formats. NTSC is typically used in the United States and Canada, PAL is typically used elsewhere. PAL has a higher spatial resolution (more lines per image) and NTSC has a higher temporal resolution (more image samples per second). With an aspect ratio of 1.33:1, 4 x 3 PAL has a standard resolution of 720 x 576 pixels, and 4 x 3 NTSC has a standard resolution of 720 x 480 pixels. For widescreen applications, 16 x 9 Enhanced PAL has a resolution of 538 x 576 pixels, and 16 x 9 Enhanced NTSC has a resolution of 538 x 480.
Video Compression Formats
Windows Media Video (WMV)
Windows Media Video is a compressed video file format for several proprietary codecs developed by Microsoft. The original codec, known as WMV, was originally designed for Internet streaming applications. The other codecs, such as WMV Screen and WMV Image, cater to specialized content.
The MPEG (the Motion Picture Experts Group) smallercommittee of the International Standards Organization (ISO) is in charge of the development of standards for coded representation of digital audio and video. MPEG is a set of defined standards for compressing analog sources into digital formats that can be easily stored and distributed. Following is a brief summary of each of the MPEG formats:
The Flash video format is a proprietary file format originally developed by Macromedia (now Adobe). One of the advantages that Flash offers over traditional video formats is that it supports the Action Script programming language, allowing for a Flash video to be embedded in an HTML page and played back with a browser plug-in rather than requiring an external application to play the file.