To quickly join movies together end to end, open the first movie, choose Edit > Add Clip to End, then select the other movie from the file dialog.

How to use QuickTime Player

Use QuickTime Player (version 10) to play, record, edit, and share audio and video files on your Mac.

Play

Use the playback controls to play, pause, rewind, fast-forward, adjust volume, and take other actions. The controls appear when you move your pointer over the QuickTime Player window, and they hide when you move your pointer away.

To move quickly forward or backward through the timeline, swipe with two fingers on your trackpad, scroll with your mouse, or drag the handle in the timeline. You can also repeatedly click fast-forward or rewind to increase playback speed in increments.

To view a video in full screen, click the full-screen button or choose View > Enter Full Screen. Beginning with OS X El Capitan, you can also use split-screen view and stream videos to your Apple TV from QuickTime Player.

Record

QuickTime Player can record a movie from your camera, or record the screen of your iPhone, iPad, or iPod touch. It can also record audio from a microphone or record the screen of your Mac.

Record audio only

Audio recording works with your built-in microphone, external microphone, or other Core Audio-compliant audio device.

Choose File > New Audio Recording.
To change the recording settings, click the arrow next to the Record button. Then choose your microphone and recording quality.
To monitor audio while it's being recorded, use the volume slider.
Click the Record button to start recording. Click it again to stop recording.

Record your screen

Screen recording creates a movie of all or part of your Mac screen. For details, see How to record the screen on your Mac.

Edit

QuickTime Player offers several options for editing your movie, including trim, split, cut/copy/paste/delete, and flip/rotate.

Trim

Use the trim function to remove unwanted parts of your movie.

Choose Edit > Trim. The yellow trimming bar appears, with handles on each end.
Drag the handles to select the part to keep. You can also take these actions:
- Click the Play button to play back the part selected.
- Move quickly through the part selected by swiping with two fingers on your trackpad, scrolling with your mouse, or dragging within the trimming bar.
- Choose View > Show Audio Track to identify quiet sections of the movie.
Click Trim. All video and audio outside the trimming bar is removed. To undo the trim, choose Edit > Undo Trim.

Split

Use the split function to split your movie into multiple sections that can be manipulated further.

Go to the point in the timeline where you want to make the split, then choose Edit > Split Clip.
From here you can take several actions:
- Drag a clip before or after another clip.
- Move through a clip by swiping with two fingers on your trackpad or scrolling with your mouse. At any point in the timeline, you can choose Edit > Split Clip to split the selected clip.
- Choose View > Trim to trim the selected clip.
- Choose View > Show Audio Track to identify quiet sections of the clip.
- Select a clip and choose other editing commands from the Edit menu, such as Cut, Copy, Paste, and Delete.
- Click the Play button to play back all clips.
Click Done. To see your clips again, choose View > Show Clips. To undo your splits, choose Edit > Undo Split Clip.

Cut, Copy, Paste, Delete

Use the Cut, Copy, Paste, and Delete commands from the Edit menu when you're editing split clips. If you're pasting a clip into another movie, you don't have to be editing clips in that movie: just go to any point in the timeline of the other movie, then paste the clip.