Connect a USB bootable drive to your Mac and restart the Mac by holding Option until you hear the reboot tone. Select the disk called Install macOS Sierra in the drive list that appears on the screen. Once the USB drive is booted, select Disk Utility Choose Mac's startup from the list Click Erase.

1. I upgraded to High Sierra (Version 10.13) earlier today. Whilst browsing in Firefox (55.0.3 64-bit), I went to an Australian streaming service (Stan) and played an episode. Upon clicking the full-screen button it filled most of the screen but left a small strip, the height of the dock, still showing the desktop.
2. ScreenFlow is a lightweight and intuitive program for capturing videos of your screen and then processing them into professional-looking finished products. With just a few clicks, you can start.
3. Step 1: Free download this video screen recording tool on Mac OS (High Sierra also included), fire it up and click the Recorder button on the main interface of MacX Video Converter Pro, and the recorder window will appear. Step 2: Adjust Capture Settings. You can choose 'Keep Full Screen' or click the blue 'Crop' icon to customize the capture.
4. Apple has included an incredibly easy to use screen recorder with macOS High Sierra, contained inside the QuickTime Player utility. AppleInsidershows you how to use it. The QuickTime Player lives.

Jul 18,2019 • Filed to: Record Audio • Proven solutions

I want to record an audio from YouTube video, does anyone know which tool could achieve it?

When you are watching a video on YouTube, you might be in the need to get YouTube audio only. So how can you record sound from a YouTube video, or how can you download audio from YouTube videos. This might be in the process that you have to extract audio only from the YouTube videos, or you just download the audio only without the YouTube video itself. So how to do? No worry! Here we will share the easiest way to record sound from YouTube videos.

The first thing that you will need to record audio from YouTube is a reliable YouTube audio recorder for Mac. You may find several audio recorder tools from the internet to extract audio from YouTube. But here I should strongly recommend an easy-to-use yet professional iMusic. This Mac audio recorder can record unlimited YouTube music without losing quality. Also, it can identify YouTube music information, such as artist, title, album and genre.

iMusic - How to Record Audio from Youtube Mac with Simple Clicks

• Record Sound on Mac /Windows without Erasing the Quality of the Audio.
• 1-click to backup iPad music to iTunes Library/Mac.
• Transfer music from Mac/PC/iTunes to iPhoneXR/XS/8/8plus/Android phone easily.
• Download music from over 3000 music sites, including download YouTube to MP3.
• Record music from any radio stations with music tag, covers, album name attached.
• Built-in library collected thousands of songs for free download.

How to Record Audio from Youtube on Mac by iMusic

Step 1. Run YouTube Audio Recorder for Mac

Download this YouTube audio recorder on your Mac and install it according to the prompts information. Then open the program interface and click 'GET MUSIC' button at the top of the primary window and navigate to 'RECORD'.

Step 2. Record Audio from YouTube Videos

After that, you should move on to do the main part of the process but it can also be regarded as the easiest. What you need to do is go to YouTube.com and find video with the audio which you would like to record. Play the video and you will see that the audio recorder starts recording YouTube audio. You can click 'Record' button again to stop recording.

Step 3. Get YouTube Audio Information

This audio recorder for Mac comes with the function of identifying audio information. It can automatically identify the recorded YouTube audio information like artist, title, album and genre. Go to 'Library' tab and right click the music, then choose 'Identify Track Info' to get audio information.

Why Choose iMusic to Record Youtube audio

Record from Various Sites

It can download and record unlimited free music from 3000+ audio sites and video sites like YouTube, Facebook, Spotify, Pandora, BBC Radio Audio, Napster, iTunes Radio, etc.

Get High Quality Audio

Record audio with 100% original quality and save music to high quality MP3 or M4A. Filter Ads and split tracks to separate music files automatically.

How To Screen Record On Mac Os High Sierra

Identify Music and Get Info

Automatically identify music and you can get music information like Album, Title, Artist and Genre thanks to the industry-leading ID3 tag identification technology.

Export Music to iTunes

With the 'Add to iTunes' button, you can directly add the recorded music to your iTunes library. And play recorded music with the built-in player.

Part 2. Recommend Another Tool to Record Sound from YouTube

Another popular program that is capable of this is called Audacity. You will only need to download this software if you do not have a Realtek sound chip installed. For this you will need additional items. Because the software records from the line in area of your computer, it is recording the noise that your computer microphone can hear. This means that any outside noises that are made while you are recording will be added to the track. If your phone were to ring while you were recording the track, your ringtone would be added into the song.

Not only will you get the outside noises on your track, but your recorded YouTube Music will not sound right and be of very poor quality.

To correct this, you can use a Line-out to Line-in method. All you need to do is select “Line in” as the input method and run a cable from your “Audio-out” to your “Audio-in”. These cables are generally standard earphone plugs for both in and out, so this is all you will need. You can pick these up for a few dollars at an electrical store. Because the “Audio-out” or headphones plug is being directed straight back into your “Audio-in” microphone socket, you should be able to eliminate all background noise and get a good quality sound recording. Should your phone ring while you are recording, you should be able to answer and have a chat without restarting your recording.

How to Record Sound on Mac with Audacity in Details

Step 1: Set up devices to capture computer playback .

Step 2: Turn Software Playthrough off.

Step 3: Monitor and set initial sound levels.

Step 4: Make a test recording.

Step 5: Make the real recording.

Step 6: Backup the capture.

Step 7: Editing.

Screen Record Mac Os High Sierra Online

It is important to remember to shut down Facebook or other internet applications that have noisy notification alerts too, because these noises are coming from your computer speakers and being fed back into your computer microphone, they will also be recorded. This method is ideal if you want to edit your tracks, as this software comes with audio editing options. But if you just want to get YouTube for offline listening, iMusic is the best solution.