This guide will teach you how you can easily trim, cut, and crop an mp4 or an mkv video in macOS High sierra macOS Mojave using Quick Look tool (a faster way) or QuickTime video application, which is built into most MAC computers. With Quick Look tool, You can now sign PDFs, trim videos, and perform other edits right from the preview pane that appears when you press Space, you don’t have to open the file. You can trim a video (cutting out the beginning or end or both) using the QuickTime video application, which is built into most MAC computers. use QuickTime Player to play, record, edit, and share audio and video files on your Mac.
In recent OS versions for Macbook Pro 2011 though, and in Lion, there is support for TRIM. But only on Apple SSD brand. So I made this patch to enable TRIM for any SSD. Mac OS X 10.10.4 Supports TRIM for Third-Party SSD Hard Drives. Tuesday June 30, 2015 9:07 pm PDT by Husain Sumra. Earlier today Apple released OS X 10.10.4. By default, Mac OS, unlike Windows, doesn't automatically enable the TRIM command for a self-installed SSD. (If your Mac comes with an SSD, TRIM will already be enabled.) (If your Mac comes with.
So, if you want to trim videos on macOS Mojave then you have two options to choose from:
- Wondershare Filmora9 for Mac. Wondershare Filmora9 for Mac (Latest version 9) balances price.
- How to enable TRIM in Mac OS X on third-party SSDs Posted by Michael Watkins on 16th January 2016 in Mac OS X Until recently however, there has been a problem with doing that - officially Mac OS X has not supported the important TRIM feature on any SSDs except the models built into new Macs by Apple themselves.
- You can choose Quick Look in macOS Mojave to trim your videos faster, or
- Trim a video clip using Apple’s QuickTime Player on your Mac.
Method 1: Trim Videos with Quick Look in macOS Mojave
You can trim a video clip on your Mac just as easily as on your iPhone or iPad. If you are using the latest version of macOS on your MacBook then you can use Quick Look feature of macOS Mojave to trim your videos faster without even opening the video file completely. Just follow the below steps to know how you can use Quick Look to trim your video:
Let’s see how to trim video in macOS using Quick Look?
STEP 1: Locate video on your Mac for trimming
The first thing you have to do is locate the video file you want to trim in Finder or on your MacBook Desktop and click on it once to select it. Don’t open the file by double-clicking on it. Just select it by clicking on it once. Your video file must be an H.264-encoded .mp4 or .mov which are supported by Quick Look. If your video is in Windows Media (.wmv) formats then it won’t support it.
STEP 2: Select the video
Now after selecting the video, press the Spacebar on your keyboard (or you can also use three-finger touch gesture) to open Quick Look preview pane. This will open Quick Look and give you a preview of the video file.
STEP 3: Click on Trim tool icon
Now, just go to the top right side of the preview window and click on the Trim icon as shown in the image below.
STEP 4: Select the start and end point to trim
After you have clicked on trim tool icon, you will see a yellow box in your video’s timeline at the bottom. You now have to select the starting and ending point of your video part which you want to trim by Clicking and dragging either end of the box. Now, you can adjust these selection pointers according to your preference.
STEP 5: Save trimmed video
After you are done selecting and deciding which part of the video you want to trim, just go to the upper right corner and press the Done button, and then decide how you want to save your trimmed video file.
You will be given saving choices like—“Replace” and “New Clip.” Choose “Replace” if you don’t need to keep your original movie without the trimming. Save as “New Clip” if you want to create a new file with a new name, without deleting the original video.
Method 2: Trim Videos with QuickTime Player in macOS Mojave
Apple’s QuickTime Player comes built-in with many video editing features. Let’s take a look at how to quickly trim a video clip using Apple’s QuickTime Player on your Mac. Let’s see how to trim video in macOS?
![Trim For Mac Os Trim For Mac Os](/uploads/1/1/8/8/118821021/347825271.jpg)
STEP 1: Locate video and open it with QuickTime Player
The first thing you have to do is locate and open the video clip that you would like to trim using QuickTime player. If QuickTime player is not set as a default media player then you have to right-click (tapping with two fingers on your MacBook touchpad) on the video clip and select Open With and then choose QuickTime Player.
STEP 2: Press command + t
Now you have to go to the QuickTime Player menubar and from there click on Edit menu, and then, select Trim. You can also press Command + T to run Trim feature.
After this, you will see a timeline will appear on the video window. It will be a yellow color borderline around your video timeline.
There are three main elements of this timeline: Play/pause button on the far left, the timeline itself at the middle and the Trim and Cancel buttons at the right.
STEP 3: Play and Select the video
Now you start playing your video and decide which part of the video you want to trim on your MacBook by using QuickTime Player trimming functionality. You can see there are two scrubbers at both ends which you can use to trim your video parts by dragging back and forth.
STEP 4: Trim your video clip
Click and drag the left yellow handle until you reach the part where you want your video clip to end.
STEP 5: Save newly trimmed video clip
Now you can save your trimmed video clip with a new name.
Method 3: How to Cut Videos with QuickTime in macOS Mojave (Split/Cut/Delete)
If you want to rearrange your video files on Mac then you can also use QuickTime for that.
Step 1: Split and rearrange clip
Open the media file, and then drag the “play head” on the playback bar to a location in the file.
Step 2: Create Multiple smaller clips
Click Edit > Split Clip and the currently selected clip (the full media file, by default) will be split into two halves. You can continue doing this to create multiple, smaller clips.
Step 3: Merge multiple files
You can then drag the clips around to rearrange them, just as you can when merging multiple separate files together.
Method 4: How to Combine multiple videos files with QuickTime in macOS Mojave
If you want to merge or combine multiple video files or clips into one video file on your MacBook Pro using QuickTime player in macOS Mojave then follow the below steps:
Let’s see how to trim video in macOS and also how to combine multiple video files?
Step 1: Open the first video
Just open the first video file in QuickTime Player. Then you can drag and drop the second video file over the first video file in the QuickTime window. Now you will see the second file appearing after the first file.
Step 2: Rearrange the clips
If you want to rearrange the video clips then you can drag-and-drop each clip here to rearrange their order.
Trim Ssd Mac Os Mojave
Step 3: Trimming the video files
Now, it’s up to you which part of videos you want to trim and remove. If you want to remove some of the parts of the first video file, then double click on the first video clip and it will open a trim interface, by using which you can easily remove content you don’t want. Same goes for the second video file. Now, if you want to combine multiple audio files (.mp3 or .m4v)
Trim For Mac Os Versions
Step 4: Close and save the file
If you are done editing, trimming or merging the video clips then you can click on Done and then close the QuickTime Player window, which will then prompt you to save your edited video file.
So, this is how you can use QuickTime Player to play, record, edit, and share audio and video files on your Mac.
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The best way to expand your Mac’s lifespan and obtain a significant speed boost is by replacing the hard drive with a solid state drive (SSD). You’ll notice the huge performance improvement right from the first time you boot up and immediately praise yourself for making this investment. However, you shouldn’t stop at installing a new SSD. There is one tiny command line you must type into Terminal to enable a feature meant to expand the lifespan of the newly installed drive; this feature is called TRIM.
What Is TRIM, and Why Do You Need It?
Writing to an SSD is totally different than writing to a traditional hard drive: the SSD first clears existing information from the flash memory cells and programs new data into them; hence, the writing process is often referred as program/erase cycles or P/E cycles. There is one thing to note, though, and that is that there are a limited number of P/E cycles an SSD can support. Writing to an SSD is like writing on a piece of paper with a pencil: if you erase the same space too many times, it can wear out. Manufacturers address this issue with so-called wear leveling, which prevents SSD memory cells (the pages) from wearing out.
SSDs contain memory cells organized into pages and blocks. What represents a challenge is that with an SSD you can write on a page any time, but you can erase only one block at a time. Each block contains a specified number of pages (from 32 to 256), which contain a specified amount of data (2 to 8KB). Unlike traditional hard drives, data on SSDs can’t be directly overwritten. When data changes, it must be written again. The same data (and metadata) ends up being written over and over again in our daily use of computers generating a phenomenon called write amplification, which uses up the limited P/E cycles.
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TRIM can be considered a more efficient way of handling “garbage” and was introduced shortly after SSDs became available. The TRIM command allows the operating system to inform the SSD about regions where the data marked for deletion are stored, and after trimming the SSD won’t preserve the contents of the block when it writes new data to a page. This enables less write amplification and, as it doesn’t use up the precious P/E cycles, the SSD’s lifespan will be much longer.
Back Up Your Mac Before Enabling the TRIM Command
You need to enable trimming manually when installing a third party SSD. All Macs shipped with an SSD have TRIM enabled, however, and yours can be checked by clicking on the Apple logo > About This Mac > System Report > SATA/SATA Express and look for “Trim Support”. Note that this won’t work on Retina MacBook Pro (late 2016) units.
If the answer here is “no” and you are running either macOS El Capitan 10.11.x or macOS Yosemite 10.10.4 or later versions, then TRIM can be enabled with one simple command in Terminal. Earlier versions of macOS don’t support this command, but there are third party apps, such as TRIM Enabler ($14.99), that can enable it.
Before you enable TRIM on the freshly installed SSD, we highly recommend doing a manual backup with Time Machine (or the backup service of your preference). Do not skip this step, because – despite supporting it – Apple doesn’t take any responsibility for data loss during the process. If anything goes wrong, the data will be lost and you won’t be able to recover it, so a backup can save the day.
But you don’t want to fill up your backup drive or the precious space on the SSD with all the junk files generated by apps as you use them: cookies, cache files, duplicates, erroneous downloads, iOS firmware downloads and much more should be wiped. For this reason, we strongly recommend performing a system cleanup using a Mac optimization app such as CleanMyMac, MacBooster or OnyX. After the cleaning process your Mac will be in its best shape for a backup and then to enable TRIM.
Trim Command Mac Os X
How to Enable TRIM on macOS in Five Easy Steps
To expand the lifespan of your SSD, follow the steps below:
- Launch Terminal.
- Type the command sudo trimforce enable, and press enter.
- Type the admin password, and press enter.
- Read the system notice, type “y”, and press enter.
- macOS will require your consent to reboot after finishing the process, so type “y” again, and press enter.
After finishing the process your Mac will reboot with TRIM enabled. Check again if TRIM support is now “OK” by clicking on the Apple logo > About this Mac > System Report > SATA/SATA Express, or by typing the following command in terminal:
system_profiler SPSerialATADataType | grep ‘TRIM’.
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