Subtitle Converter
Convert supported subtitle cue formats.
Video and Audio tools
Tools for audio and video files are being built. This category is ready for them, and it stays out of navigation and the sitemap until the first tool is published, so you only see pages that work.
41 tools in this part of the catalogue.
Tools to start with
Subtitle Editor and Sync Shifter
Edit subtitle cues and shift their timing.
Audio Trimmer and Cutter
Trim a PCM WAV at sample boundaries.
Subtitles3 tools
Subtitle Converter
Convert supported subtitle cue formats.
Subtitle Editor and Sync Shifter
Edit subtitle cues and shift their timing.
Subtitle Quality Checker
Check subtitle timing and line limits.
WAV audio18 tools
Audio Trimmer and Cutter
Trim a PCM WAV at sample boundaries.
Audio Joiner
Join ordered WAV clips with optional fades.
Audio Volume Booster and Normalizer
Adjust WAV gain and sample peaks.
Audio Speed and Pitch Changer
Change WAV speed and pitch together.
Local Video Audio Extractor
Save a local video’s decoded audio.
Audio to PCM16 WAV
Convert supported audio to PCM16 WAV.
MP3 ID3 Metadata Editor
Inspect or replace MP3 text tags.
Audio Spectrogram Analyzer
Inspect time and frequency in a local WAV.
Audio Loudness and True-Peak Meter
Check 48 kHz WAV loudness and true peak.
Multitrack Audio Mixer
Mix up to eight WAV tracks with timed offsets.
Stereo Channel Splitter and Router
Split or remap a stereo WAV channel pair.
Reviewed Audio Silence Remover
Review quiet regions before removing them.
Audio Gain Envelope Editor
Set several time-based WAV gain points.
Parametric Audio Equalizer
Adjust named frequency bands in a local WAV.
Audio Dynamics Processor
Review WAV gating and compression settings.
Monophonic Pitch and Tuner Analyzer
Check pitch in a monophonic WAV phrase.
Audio Loop-Point Finder
Compare WAV loop seams near two markers.
CUE Audio Track-Sheet Builder
Create a CUE sheet and WAV track timeline.
Video frames19 tools
Video Frame Extractor
Extract PNG stills at entered video times.
Browser Video to WebM
Convert a supported clip to WebM.
Browser Video Compressor
Compare a lower-bitrate WebM export.
Browser Video Trimmer
Save a selected interval as WebM.
Images to Video Slideshow
Make a silent slideshow from local images.
Browser Video Joiner
Join a few clips into WebM.
Video Resize and Crop
Resize or center-crop a video.
Video Speed Changer
Change playback speed in a WebM export.
Video Rotate and Flip
Rotate or mirror a video.
Remove Audio from Video
Export WebM without an audio track.
Subtitle Burn-In Composer
Render reviewed captions into a video.
Video Soundtrack Replacement and Mixer
Replace or mix short-video sound with a WAV.
Picture-in-Picture Video Composer
Place a timed inset over a short base video.
Timestamped Video Storyboard
Export a timestamped video contact sheet.
Media Container and Codec Inspector
Read local media headers and declared codecs.
Bilingual Subtitle Alignment Workbench
Review paired cues in two subtitle languages.
Video Calibration Clip Generator
Make a short flash-and-beep reference clip.
Animated Title-Card Composer
Render timed text layers as a short WebM.
Audio and Video Event-Offset Measurer
Compare manual video and audio event times.
Microphone recording1 tool
Browser Audio Recorder
Record a short clip after granting permission.