Convert video files between MP4, WebM, and MOV containers directly in your browser. Fast, free, and completely client-side with Video Converter.

Generate client-side video thumbnail grid contact sheets and storyboards with timestamps directly in your browser with zero server uploads.

Compress MP4, WebM, and MOV video files online directly in your browser. Reduce video file size up to 80% without quality loss with our Video Compressor.

Calculate video compression ratios, target bitrates, and file size savings across H.264, HEVC/H.265, AV1, and VP9 codecs.

Calculate target encoding video bitrates for Discord (25MB/50MB), YouTube, Twitch, and custom file size limits with FFmpeg snippets.

Calculate video file size from bitrate and duration, or compute the exact target bitrate required to fit within Discord, email, DVD, or streaming file size limits.

Extract uncompressed WAV or MP3 audio tracks from video files directly in your browser using the Web Audio API.

Calculate proportional dimensions, simplified aspect ratios, and letterbox/pillarbox padding thickness for any display container.

Fix delayed or premature subtitle cues with millisecond timecode shifting and frame rate stretch calibration.

Extract clean SRT, WebVTT, and plain text transcripts from subtitle and media files with zero cloud uploads.