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Video and audio tools

Estimate file size, transfer time, storage and compatibility with lightweight tools built for creators, editors and everyday media planning.

Video file-size calculator

Estimate MB or GB from duration, video bitrate and audio bitrate.

Estimate the video bitrate required for a target file size after reserving space for audio.

Estimate transfer time from file size and connection speed.

Compare storage needs across common audio bitrates.

Plan space for a collection of media files with sensible free-space headroom.

Find a broadly compatible format for a phone, computer, television or older player.

Inspect and save an available thumbnail size for permitted content.

Find available caption languages and prepare VTT or SRT subtitles.

Review containers, codecs, resolutions, frame rates and estimated sizes without downloading video.