Merge Videos Online for Free
Merge videos into one 720p MP4 on your device. Arrange the clips in playback order and keep sound and silent footage on the same timeline.
How to merge videos in playback order
- Select at least two clips for the sequence.
- Use the up arrows to put them in playback order.
- Export one video and play across each cut to check the joins.
Where three clips meet on the timeline
- Clip 1 · 8 s
- 0:00–0:08
- Clip 2 · 12 s
- 0:08–0:20
- Clip 3 · 5 s
- 0:20–0:25
Choose the clips that belong in the final cut
Select at least two local video files together in the file picker. Each item in the numbered list becomes one continuous section of the finished MP4. To merge videos taken on different devices, first open each original and check which moment it starts and ends on. A phone clip may start before the action, while a screen recording may include several seconds after the action ends. Trim those extra seconds before adding the files if they should not appear in the final cut.
Use the arrow beside a filename to move that clip up one position. Moving the third item up twice puts it first. Check the resulting list from top to bottom even when the filenames contain dates. A copy can carry a new creation date, and two cameras can give their files the same number. The order shown on the page determines the order of playback.
The preview above the list shows the first file. It is useful for identifying the opening shot, but the preview cannot show a transition between two files before you export. If the sequence opens on the wrong view, correct the order in the list. If the opening view is right but starts too soon, prepare a shorter source clip.
Fit portrait and landscape clips into the same frame
When you merge videos here, each clip is fitted inside a landscape canvas measuring 1280 by 720 pixels. The original proportions are preserved. A widescreen clip can fill the frame, while a portrait clip leaves space at the sides. A wider cinema frame can leave space above and below. The padding belongs to the exported picture and remains visible when the MP4 moves to another device.
For a mix of orientations, decide whether the full frame or a particular subject matters more. Keeping a full portrait frame preserves faces near the top and captions near the bottom. Cropping it to landscape can make the subject larger, but sacrifices part of the scene. Make that crop separately before joining the clips if it is essential. Rotating a genuinely vertical recording will put the subject sideways.
The joined file plays at 30 frames per second. Footage shot at another frame rate is brought onto that timeline, so two cameras recording the same movement can still look slightly different. When you merge videos with fine on-screen text, check the smallest lettering in the finished 720p picture. The original recording may contain more detail than will fit in the output.
What happens to sound when you merge videos?
The tool uses the first audio stream of each clip that has sound and converts it to 48 kHz stereo before joining. For a clip with no audio stream, it inserts silence for that clip’s duration. The next speaker should therefore enter when the corresponding picture appears. There is no need to attach an empty sound file to every silent recording before adding it to the list.
If your source has several languages or separate microphone and desktop tracks, listen to the exported section itself. A player can remember which track you selected when watching the original. That preference does not change the order of the tracks inside the file. To merge videos with a particular mix, prepare a copy containing the intended soundtrack first.
A hard cut also makes a sudden change in recording level easy to hear. Play the end of one clip and the beginning of the next at a fixed listening volume. If one speaker is much louder, adjust the affected source before merging. Lowering the volume of the finished MP4 would lower both speakers equally.
Check the sequence without watching every minute again
Add up the source durations in list order to find the approximate time of each join. For clips lasting eight, twelve and five seconds, the second clip should begin near eight seconds and the third near twenty. Seek just before each of those times and let playback cross the boundary. Looking at one still frame on either side can miss a clipped syllable or an unexpected black frame.
Save the downloaded copy and open it in the app where people will watch it. If a scene is missing, compare the list with the selected filenames. If a scene appears twice, check whether one of the source clips already includes that scene. It is easier to correct the list and merge videos again than to cut a duplicate out of an already encoded copy.
Questions about joining video clips
Can I merge videos side by side?
This tool plays the clips one after another in a single frame. To show two camera angles simultaneously, use an editor with separate picture layers and position each view on its own part of the screen.
Can I merge videos and keep separate downloads?
The export produces one continuous MP4. Keep the original files for separate playback. For a group of individual converted copies, use the batch converter, which gives each source its own result.
Can I add a dissolve when I merge videos?
The join is a straight cut. The last frame of one clip is followed by the first frame of the next. If a dissolve is part of the edit, use an editor that can overlap the two shots.