Videos living in the gigabyte neighborhood and above traditionally have been considered for compression before transferring due to the enormity of this content. The size of video files, like all data files, is typically measured in bytes or variations thereof: kilobytes (KB, 1024 bytes), megabytes (MB, 1024 kb), gigabytes (GB, 1024 megabytes), and terabytes (TB, 1024 GB).
There are other factors that help determine video file size including video length and frame rate (measured by frames per second, or FPS).
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Encoding consists of both the codec (the code used to compress the video, including MPEG and ProRes), along with its container or file type (such as AVI or MP4) some file types feature more efficient codecs (MP4 files offer more efficient compression than FLV files, for example).It’s usually measured in megabits per second (Mbps) Bitrate measures how much information is transmitted for each second of video.Resolution is the number of pixels, typically represented by a horizontal x vertical measurement (1080p HD video, for example, has a resolution of 1920 x 1080).There are three main factors that go into determining the size of a video – resolution, bitrate, and encoding – and they can all play a role in helping reduce video file size: We’ll also answer the question of whether you really need to compress large video files in the first place (especially when there’s a large file transfer service available such as MASV, with no data limits and automatic lossless compression).īut first, let’s take a step back and outline the nuts and bolts of video compression in general.Īt its simplest, video compression uses codec algorithms to automatically remove unnecessary or repetitive sounds or images from a large video file, thus making the files smaller. While this may not be a huge issue for weekend warriors transferring clips of their latest snowboarding session, it’s a potentially existential threat for filmmakers and post-production houses who live and die by their quality.īelow we’ll outline the pros and cons of video compression, along with some of the most popular techniques used by video professionals. Compressed video usually loses video quality, especially if your viewers use a large screen (that pixelated or grainy look that can come from compressed video on too large a screen is a type of compression artefact ). First of all, it’s a pain: Who needs all those extra steps in their workflow when there are dozens of other things to do? But in most cases it also means removing data from your video file.
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It helps get around the often-frustrating file size limitations of many file transfer and email platforms, and compressed videos also reduce bandwidth usage, upload and download times, and the amount of buffering required when streaming video.īut for all its positives, the unfortunate reality is that compression has a lot of downsides. Compressing video files can be incredibly useful when sending footage to partners, clients, or film festival print traffic coordinators.
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