In Europe, 25 frames per second are standard ("PAL"). The frame rate defines the number of images displayed per second. This combination of file format and codecs ensures high video quality and a small file size, and it is currently supported by almost all hardware and software players.Ī video works just like a flipbook, by displaying many still images one after the other extremely quickly to create the impression of fluid movement. Which file format should you choose? If you want to be able to play a compressed video file on many different devices, we recommend MP4 files with H.265 or H.264 for the video data and AAC or MP3 for the audio. This means that with container formats like MP4 or AVI, you don't know exactly what data is included. For example, an MP4 file can contain video data with the codecs H.265, H.264 or even MPEG-2 and even MPEG-1, as well as image data with the codecs JPG and PNG and audio with the codecs MPEG-4 Part 3, AAC, MP3, MP2 and MP1. Many of these file formats are known as containers, because they contain data that can be packaged in various ways. This reason for this is that while there are thousands of file formats, there are only a few compression methods. Since most file formats use the same compression methods, however, there aren't a ton of technical differences. Every software or hardware manufacturer develops their own file format – that's why there are so many different video formats and file extensions available. Anyone who edits videos using a computer has to work with different video formats – from older formats such as AVI and MPG or newer MP4 files to WMV, AVI, MOV, FLV, MKV and a thousand other file extensions.
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