FlashBoardsDocs

Media tools

Split, crop, extend, collage, convert and compress media on your board, and see which tools run in your browser or on FlashBoards compute.

Media tools edit board assets without leaving FlashBoards. Select an item and open its three-dot More actions menu, or select several items for the multi-selection menu. Results are added as new items next to the source and the original is kept, except Crop with Replace and Flip, which update the selected item.

Tools only appear for media they apply to. Most need the file stored on your board, so for web-linked or shared-board media use Download to Board first (see Import media). Compose collage and Merge videos also accept web-linked items.

Runs in your browser vs FlashBoards compute

Most tools run in your browser. A few run on FlashBoards servers ("compute"):

  • Auto Split, Compose collage and Safe always use compute.
  • Merge videos and Split to (5s) try your browser first and fall back to compute.
  • Manual collage runs in your browser and works for any signed-in account.

NoteWhich compute tools need a subscription

Auto Split, Compose collage and Safe need an active subscription. Without one you see "Server media tools need an active subscription." Other compute tools, such as Resize, Trim, Split, Merge videos and the audio tools, work for any signed-in account. See Plans and balance.

The Assistant in Agent mode and connected AI agents can run these tools too. A few audio tools are only available to agents: Join audio joins 2 to 12 audio items end to end into one WAV or MP3, Mix audio tracks mixes 2 to 12 tracks into one track of up to 3 minutes, and agents can also replace a video's soundtrack. These run on compute, and the result is added next to the sources. Describe and Transcript are paid AI actions; see Describe and transcribe. To change only part of an image with AI, use Guided edit.

Limits

  • Files sent to compute can be up to 100 MB. Bigger videos open Compress video first; bigger audio is rejected. Pick a Quality (Low, Medium or High). Browsers without the newer video tools show Target size instead: 60 MB, 80 MB, 95 MB or your own size from 10 to 99 MB. Click Compress & Continue to compress and carry on with the tool.
  • Merge videos: up to 12 videos per run.
  • Merge videos and Compose collage on compute: 400 MB combined.
  • Split to (5s) and Auto Split on compute: clips up to 60 seconds (up to 180 seconds for some Auto Split runs).
  • Safe: images up to 15 MB, videos up to 100 MB.

Video and audio tools

ToolWhat it does
Split to (5s)Splits video or audio into 5-second parts. The Custom clock icon lets you set Duration (seconds).
Manual SplitScrub, cut and export clips by hand.
Auto SplitAdds one part per detected scene.
CompressMakes a smaller copy at Quality Low, Medium or High (or a Target size).
ExtendPads with black to a preset size. Works on images and video.
CropCrops to a preset or, for images, a Custom box.
ConvertVideo to MP4 • 15 FPS, 24 FPS or 30 FPS. Audio to MP3 or WAV.
Extract frameSaves the frame at the playhead as a PNG.
Export audio / Remove audioAdds the soundtrack as an audio item, or a silent copy of the video.
Room reverbAudio only, in More actions: adds a copy with room reverb, made on compute. Not on shared boards.

Presets for Extend and Crop are 1:1 • 1080 x 1080, HD • 1280 x 720, HD • 720 x 1280, Full HD • 1920 x 1080 and Full HD • 1080 x 1920.

Remove audio removes the whole soundtrack. To keep music and drop only dialogue, use an audio model that splits a track into stems (see Models and workflows), or an external editor.

Split a video by hand

Open Manual Split

Select the video, open More actions and choose Manual Split.

Add cuts

Scrub with Previous Frame, Play and Next Frame, then click Split At Playhead (S). Drag clip boundaries to adjust; Alt-click one to remove it.

Export

Click clips to select them, then Remove N or Merge N if needed. Click Export Selected or Export Parts to add the clips to the board.

Keys: S splits, Space plays or pauses, arrow keys step a frame (with Shift, 1 second), and Delete removes the selected clips or the last cut.

In Manual Split, click the time ruler and press S to cut, then select a clip

Image tools

ToolWhat it does
SplitCuts a grid image into panels. Drag the centre handle or click 2 x 2, 3 x 3, 4 x 4, 2 x 3 or 3 x 2, then Split.
Crop > CustomOn-canvas box with Free, 1:1, 4:3, 3:4, 16:9, 9:16, 3:2 and 2:3. Replace swaps the image, As New adds an item.
FlipChoose Horizontal or Vertical to flip the selected image.
ConvertJPG or PNG.
Copy to clipboardCopies the image (not GIF).

Split, Crop and Flip don't work on GIFs.

Multi-selection tools

Select several items and open More actions.

  • Merge videos joins 2 to 12 videos in layer order, back to front. The result uses the first clip's frame rate.
  • Compose collage makes an automatic collage of 2 or more images.
  • Manual collage opens Manual Collage. Drag images into cells, set Aspect Ratio, Output Size, Columns, Rows and Gap, then Export to add a PNG.
  • Grid arranges images into a grid.
  • Export selection as PNG renders the selection or the whole board as one PNG.
  • Download selected saves the selected media as a ZIP.
  • Copy links copies shareable links for the selected items.
Drag images from the list into the grid cells, then click Export

Safe transforms

The Safe menu makes a protected copy: Face mosaic • Fine, Standard or Strong for images and videos, or Hybrid deformation for images. It doesn't guarantee full anonymization, and animated images aren't supported.

See running jobs

While a tool runs, a status bar appears at the bottom of the board. When compute jobs are active, click Queue N to open FFmpeg queue, where each job has a Cancel button.

Fix media tool problems

Open User settings, then FFmpeg & Media. In FFmpeg Diagnostics, click the refresh icon (Refresh diagnostics) next to Copy, then click Copy to send the results to support. See Troubleshooting.

Last updated 13 Oct 2026. Using an AI assistant? Copy this page as Markdown.

On this page