Correction, 2026-10-02: this page did not say that Merge Videos' output has no sound. The merged file has no audio track: each clip's own audio, including generated sound, dialogue and lip sync, is dropped. The costed example also read as if the music bed went into the merge. The summary and FAQ now say it plainly, and music, voice and effects go on the Video Editor timeline.
Correction, 2026-10-01: this page said Merge Videos can't trim and can be driven through the 8frame MCP server. On the canvas it is the Montage node: it takes 2 to 10 clips and cuts each one to a maximum length you set (1 to 15 seconds, default 5), though it doesn't pick in and out points; and the MCP connector has no merge tool. We also removed audience and quality claims we can't source (muted views, caption line lengths, garbled text, grain as "the biggest tell", clips degrading with duration) and added that 8frame has a separate Video Editor with a timeline.
Merge Videos, the Montage node on the canvas, combines 2 to 10 clips into one file with ffmpeg transitions, for 10 credits per merge run. It is the simplest tool on this canvas and worth knowing about precisely because it is basic: for a straightforward sequence it removes a download-and-upload loop, and for anything else you want a real editor.
TL;DR
- 10 credits per merge run, about ten cents, for 2 to 10 clips
- What it does: joins clips in order with ffmpeg transitions, in a style you pick (cinematic, hyper or clean), and cuts each clip to a maximum length (1 to 15 seconds, default 5)
- What it does not: keep any sound (the merged file has no audio track, so each clip's own audio is dropped), choose in and out points, grade colour, add captions or keyframes
- Use it for simple sequences and for keeping a chain on the canvas
- Use an editor for anything where timing, sound or grade matters, which is most finished work
What it is
A node that takes 2 to 10 video clips and outputs one file, joined in order, with transitions handled by ffmpeg. You set the aspect ratio, the transition style, the frame rate, the maximum length per clip and the transition length. Flat price per run.
The practical value is not the feature, it is that the whole chain stays in one place: generate six shots, merge them, and the result is a board you can hand to someone rather than six files in a downloads folder plus a project in an editor.
What it costs, in context
Canon 8frame prices, a credit is $0.01 at pack rate:
| Element | Route | Credits |
|---|---|---|
| Merge run | Merge Videos | 10 |
| Six shots at 480p | Wan 3.0, 5s each | 144 |
| Six shots at 1080p | Wan 3.0 base, 5s each | 570 |
| Music bed, 30 seconds | Lyria 2 | 13 |
| Sound effect | ElevenLabs SFX | 1 to 6 by length |
| Voiceover, 1,000 characters | ElevenLabs TTS | 13 |
A short assembled piece: six shots at 480p (144) and one merge (10) is 154 credits; with a music bed (13) laid under the merged file on the Video Editor timeline, 167 credits, about $1.67.
When it is the right tool
A simple sequence in order. Six generated plates joined into one background clip, or a set of cutaways assembled into one file.
Keeping the work on the canvas. For a collaborative board, a merged output is something a colleague can see in context. Six separate files are not.
Quick assembly to evaluate. Before committing to an edit, joining the clips tells you whether the sequence reads at all. At 10 credits that is a cheap check.
When to use an editor instead
Almost everything else, and the list is worth being specific about:
Timing. Trimming a 5-second generation to its best 1.5 seconds is the single most important operation in working with generated video. This tool only caps each clip's length; it doesn't let you choose which part to keep.
Audio. A continuous ambient bed under the whole sequence is the fix for the audible gaps at cuts between generated clips, and that needs real audio tracks.
Grading. Generated clips arrive with their own look and will not match each other or your real footage. One grade across everything is what makes a sequence read as one piece.
Grain. A grain overlay across the whole timeline can help generated and filmed material sit together. See how to match AI clips to real footage.
Captions. Caption craft (short lines, split at clause boundaries, placed clear of the platform's interface) is editor work.
Text and titles. Type set in the edit is exact and editable, so it goes there rather than into a generation.
8frame has its own editor for this: a separate Video Editor mode with a timeline and video, text, caption and sound layers. Any other editor works too.
The honest workflow
For anything that ships:
- Generate more than you need. Five seconds per shot, expecting to use 1.5.
- Merge to evaluate if you want a quick look at the sequence, 10 credits.
- Take it to an editor for the real assembly: trim, grade, grain, audio bed, captions.
- Export at delivery resolution, which means generating at delivery resolution, since there is no video upscaler on this canvas.
Merge Videos sits in step 2. Treating it as step 3 produces something that looks like joined clips, because that is what it is.
FAQ
How much does Merge Videos cost? 10 credits per merge run, about ten cents, flat regardless of clip count.
Can it trim clips? Only to a maximum length per clip, 1 to 15 seconds (default 5). It doesn't let you pick which part to keep; that is editor work, and it is the operation that matters most with generated footage.
Does it keep the clips' sound, or add music? No to both. It takes video clips only, and the merged file has no sound at all: the clips' own audio, generated dialogue and lip sync included, is dropped. Lay music, voice and effects on a timeline, in 8frame's Video Editor or your own editor.
Can I run it through the MCP connector? No. The MCP connector has image, video, music, background removal, upscale and edit tools, but no merge tool.
Should I use it for finished work? For a simple silent sequence, it will do. For anything needing timing, grade or sound, use an editor.
Sources
- Merge Videos / Montage: 10 credits per run, 2 to 10 clips, styles, maximum clip length 1 to 15 s (default 5), transition length: the 8frame app, checked 2026-10-01
- Clips cut to the maximum length per clip: the 8frame app, checked 2026-10-01
- No audio track in the merged file: the 8frame app, checked 2026-10-02
- MCP connector tool list (no merge tool): 8frame MCP connector tool definitions, read 2026-10-01
- Video Editor mode with timeline and sound layers; Wan, Lyria, ElevenLabs prices: the 8frame app, checked 2026-10-01
Merge to look, edit to ship.
Try it without signing up: the 8frame canvas opens on a real board. The canvas is free and unlimited; generation is paid from $19/month.