Yes, technically, but usually not enough to notice. Youtube to mp3 songs.
Also, I will provide you with a free lossless way to extract the sound without reducing quality, and I am in no way affiliated with the company.
There are 2 groups of audio file formats:
Lossless, where there is no change or degradation in sound quality, and
Lossy, where certain aspects of the sound can be lossed.
The audio layer of the YouTube video is AAC format embedded in M4A format.
Therefore, converting AAC to MP3 is a lossy process by definition.
However, in most cases this is not a big deal. Most conversion processes will do a pretty good job in the conversion, but there may technically be aspects of data that get lost, but in most cases you won’t be able to tell the difference.
Here is a method to extract the M4A file.
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Disclaimer: I am in no way affiliated with this company, and I do not benefit in any way.
Download and install JDownloader: - Official Homepage
(Hint: Choose Advanced Installation and carefully read each step. As free software, it will try to install optional unnecessary software such as Norton Antivirus, and try to add an unnecessary browser extension, etc)
Run the software, and paste in your YouTube video link.
Right click on the Audio Stream (M4A file) and select Download
It depends on which service or software you use to convert it.
Its possible to extract the audio as it is in youtube with out any quality loss.
Most convertion services reduces audio quality to make the file size smaller and to reduce load on their servers.
To make sure you always download the highest possible quality. I recommend you use MP3FY | Online MP3 Converter
I personally use it and I find it really useful, specially because it works with almost any website I try, some of them includes YouTube, SoundCloud, Instagram, Facebook. It supports alot more. It doesnt even have any time limit. You can convert videos even as long as 10 hours in just 1 minute. Its really fast. And the best of all, it automatically tags music with correct album art and other metadata (like title, genre, album name etc).
Actually will not as long as you have a professional YouTube video converter.
Before you go on the YouTube to MP3 or MP4 conversion work, you should download a YouTube video converter. Brorsoft Video Converter for Mac is specialized in converting YouTube videos(usually in.FLV) to MP4, MP3 format on Mac OS X(including macOS Sierra, El Capitan). It brings the simplest way to convert YouTube video to MP4 or extract MP3 audio from YouTube, so that you can watch them anywhere on portable players like iPad, iPod, iPhone, PSP, etc.
Plus, the outstanding feature of this YouTube Video converter for Mac software lies in its fast converting speed and excellent output audio/video quality. Users do not need to spend much time on the whole YouTube to MP3, YouTube to MP4 conversion and the batch files processing model is also supported to offer unprecedented multi-file conversion speed.
P.S. If you are Windows users and wanna convert YouTube videos to a decent format, please get Brorsoft Video Converter.
After running the program, load YouTube videos to it by clicking Add button or simply drag & drops. You can add many files and convert them at one time.
You can choose different formats for different files in this YouTube video converter. Here we choose MP4 as output format from the Common Video format list. And for converting YouTube video to MP3, you can choose MP3 as output format from Common Audio profile list.
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Tip: Click the "Settings" button, you can also change audio and video parameters as you wish.
Click the Convert button to start the YouTube to MP3/MP4 Mac conversion with this top video converter for Mac. You can view the conversion progress and are able to cancel the converting process at anytime.
You can choose different format when downloading a video or music and you can choose an HD video of 1280p.
With InsTube you can directly convert a YouTube video into an MP3 file with high quality.
And you can get help on the following video if you have any problems.