How to use Merge Videos
Clips with different dimensions, frame rates, orientations, and codecs cannot be concatenated reliably as-is. Normalization takes time and can reduce quality.
- Choose a small set of clips and drag them into order.
- Review duration, orientation, dimensions, and audio on each clip.
- Choose a common canvas, frame rate, and padding behavior.
- Inspect every join, audio level, and total duration after merge.
Available controls
- Order and enabled clips
- Common dimensions and background padding
- Frame rate and quality
- Silent-track handling for clips without audio
What it helps with
- Normalizes clips from different sources
- Media is read and transcoded in this browser tab and is not uploaded to FreeTool to perform the task.
Compatibility and limits
- Total size and browser memory make many long clips unsuitable
- Different clip properties normally require re-encoding
- No transitions, timeline, multitrack mix, or subtitle editing
Frequently asked questions
Why are there black bars?
Different aspect ratios need padding when the complete frame is preserved.
Why does volume change at a join?
Sources have different levels and sample settings; professional loudness normalization is not included.
Are videos uploaded?
Media is read and transcoded in this browser tab and is not uploaded to FreeTool to perform the task.