Which video format takes up the least space

The video format that takes up the smallest space is AV1. AV1 uses advanced compression technology to significantly reduce video file size while maintaining high video quality. Compared with other common video formats, AV1 has higher compression efficiency and smaller file size. AV1 uses a variety of technologies when compressing video. Intra-frame prediction and inter-frame prediction can effectively utilize the spatial and temporal correlation in the video and reduce the storage of redundant information. Transform coding and entropy coding can further compress video data, reduce file size, etc.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

The video format that takes up the smallest space is AV1 (AOMedia Video 1).

AV1 is an open source video encoding format developed by the Alliance for Open Media (AOMedia). It uses advanced compression technology to significantly reduce video file size while maintaining high video quality. Compared with other common video formats, such as H.264/AVC, H.265/HEVC and VP9, ​​AV1 has higher compression efficiency and smaller file size.

AV1 uses a variety of technologies when compressing video, including intra-frame prediction, inter-frame prediction, transform coding, and entropy coding. Among them, intra-frame prediction and inter-frame prediction can effectively utilize the spatial and temporal correlation in the video and reduce the storage of redundant information. Transform coding and entropy coding can further compress video data and reduce file size.

Due to the high encoding complexity of AV1, the performance requirements of the decoder have also increased accordingly. To solve this problem, AOMedia has also developed a high-performance decoder called dav1d, which can provide excellent decoding performance without sacrificing decoding speed.

Although AV1 has excellent compression efficiency and small file size, because it is a relatively new video format, support on some devices and platforms is currently incomplete. However, as time goes by and technology advances, AV1 is expected to become a mainstream video format in the future.

When choosing a video format, in addition to considering the file size, you also need to consider other factors, such as device and platform support, video quality requirements, and transmission bandwidth. If you have high requirements on video file size and the device and platform support AV1, then AV1 is a good choice. However, if the device and platform do not support AV1 fully enough, or the video quality requirements are not particularly high, you can consider other common video formats, such as H.264/AVC, H.265/HEVC or VP9.

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