Coachmark.app
Load a local video or image file.
No media loaded
Choose a local video or image file.
Marks already saved for this media
Would you like to load them?
How Coachmark.app works
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How Coachmark.app works
Privacy
Videos and images are not uploaded to servers. Loaded media stays on this device and is read directly by your browser.
Load and Export
- Load
- Choose a local video or image file from this device.
- Download
- Save the current marked frame as a PNG.
- Copy
- Copy the current marked frame to the clipboard when the browser supports image copy.
- Share
- Open the device share sheet when supported by the browser.
Playback
- Play
- Start or pause video playback.
- Timeline
- Scrub through the video. Markers show frames with marks.
- Speed
- Review clips at 0.25x, 0.5x, 1x, 1.5x, or 2x speed.
- Frame step
- Move backward or forward by 1, 5, or 10 frames.
- Mute
- Turn video audio on or off.
- Drag handle
- Move the playback controls around the video.
Drawing Tools
- Pen
- Draw freehand marks on the current frame.
- Arrow
- Drag from the start point to the target point.
- Circle
- Drag to highlight a round area.
- Box
- Drag to frame a rectangular area.
- Path
- Place timed points across playback to show movement over time.
- Text
- Click the media, type a note, then click away to place it.
- Timer
- Click once to start a stopwatch mark and again to stop it.
Style and Zoom
- Color swatches
- Set the color for new marks.
- Stroke
- Set the line weight for new marks.
- Undo
- Remove the most recent mark.
- Zoom
- Select a region to zoom into. On touch screens, use a two-finger pinch.
- Reset
- Return to the full media view.
Marks
- Mark list
- Review saved marks for the loaded media and jump to their timestamps.
- Hide
- Temporarily hide a mark without deleting it.
- Delete
- Remove a single mark or delete all marks for the current session.
- Save
- Save marks in this browser's local storage for the loaded file name.
- Load
- Restore locally saved marks for the current media when available.