![]() The bitrate of a video is defined as the amount of data per second that the video uses – and so the file size of a video is literally its bitrate multiplied by its total duration. For example, if you have a 1080p video and you reduce it to 720p and only watch it on a 720p display – you won’t see the difference between the two. Reducing the resolution of videos will affect is quality, however that difference may not be noticeable on the display you’re using. Newer formats and codecs in particular tend to have better compression, which is why MP4 with H.264 is so popular and is gradually being replaced by H.265.Īnother factor that affects the file size of videos is its resolution, as more data is required to reproduce higher resolution video images. ![]() Some video formats and codecs are able to compress videos more efficiently, which allows them to have smaller file sizes at comparable qualities.
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