Media & Subtitle Tools
Calculate video and audio properties and transform subtitle text locally without uploading media. 20 tools are currently live in this section.
Video Bitrate Calculator
Estimate average video bitrate from file size and duration.
Open tool →Video File Size Calculator
Estimate video file size from total bitrate and duration.
Open tool →Audio Bitrate Calculator
Estimate average audio bitrate from file size and duration.
Open tool →Audio File Size Calculator
Estimate audio file size from bitrate in kbps and duration.
Open tool →Video Frame Count Calculator
Calculate approximate total video frames from duration and frames per second.
Open tool →Timecode to Seconds Converter
Convert HH:MM:SS or HH:MM:SS.mmm timecode into total seconds.
Open tool →Seconds to Timecode Converter
Convert total seconds into an HH:MM:SS.mmm media timecode.
Open tool →Video Aspect Ratio Calculator
Reduce a video width and height to the simplest whole-number aspect ratio.
Open tool →Video Resolution Scaler
Scale a video resolution proportionally to a target width.
Open tool →Media Transfer Time Calculator
Estimate transfer time from file size and connection throughput.
Open tool →SRT to VTT Converter
Convert pasted SubRip SRT subtitles to WebVTT format locally.
Open tool →VTT to SRT Converter
Convert pasted WebVTT subtitles to SubRip SRT format locally.
Open tool →Subtitle Time Shifter
Shift SRT or VTT cue timestamps forward or backward by a chosen number of seconds.
Open tool →Subtitle Cue Counter
Count timed subtitle cues in pasted SRT or WebVTT text.
Open tool →Subtitle Line Counter
Count non-empty subtitle text lines while excluding cue numbers and timestamps.
Open tool →Subtitle Word Counter
Count words in subtitle dialogue while excluding timestamps, cue numbers and WebVTT headers.
Open tool →Subtitle Text Extractor
Extract plain dialogue text from SRT or WebVTT by removing timestamps, cue numbers and headers.
Open tool →Subtitle Formatting Remover
Remove common HTML-style subtitle formatting tags while keeping cue timing and text.
Open tool →Subtitle Timeline Duration Calculator
Read subtitle timestamps and report the first cue, last cue and covered timeline duration.
Open tool →Subtitle Reading Speed Calculator
Estimate words per minute from subtitle dialogue and timed cue durations.
Open tool →About Media & Subtitle Tools
Calculate video and audio properties and transform subtitle text locally without uploading media. MediaZuno groups closely related utilities together so you can move between tasks without hunting across different websites.