coachmark.app

Load a video or image

00:00.00 / 00:00.00

Tools

Style

Stroke

Marks

Links

Help

How coachmark.app works

Privacy

Videos and images are not uploaded to our servers. All media and saved Marks stay on the device and are only accessible to you. Shared, copied, or downloaded snapshots leave the device only when you choose those actions.

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.
Line: Drag from the start point to the end point.
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.
Color swatches: Set the color for new marks.
Stroke: Set the line weight for new marks.
Undo: Remove the most recent mark.

Zoom

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.