YOUTUBE SOUND QUALITY AND PICTURE QUALITY (AS OF JUNE 2021)
This time, I investigated the sound quality and image quality of “YouTube”.
HOW TO UPLOAD TO YOUTUBE WITH HIGH QUALITY SOUND
Basically YouTube uses “H.264 AAC-LC” or “Opus” as the audio codec.
The video codec used is “H.264” (MP4) or “VP9” (WebM). “AV1” is also used in some videos.
Verification method
(Video) Download the official video of “3D Youtube Downloader”, upload the video to “VLC Media Player” and refer to Media Information → Input Bit Rate in Statistics.
(Audio) Check the audio of the video downloaded by the above method using “foobar2000” for the bit rate. The cutoff frequency is converted to .wav format by “XMedia Recode”, and the file is imported into “WaveSpectra” and verified.
● PC
The PC version of YouTube ranges from 144p (320 x 180) to 4K (3860 x 2160), but there are differences in the image quality that can be selected and the audio that can be played depending on the browser.
You can check if your browser supports it on the next page.
YOUTUBE SUPPORT BROWSER
The following is the support status for each browser (browsers that support both VP9 and MP4 have the highest picture and sound quality).
Browser name PIN
Internet Explorer (Windows7) Not supported (not visible)
Incompatible iOS Safari
Internet Explorer (Windows 8.1 / 10) Only compatible with MP4 (not viewable)
Safari on Macintosh Only compatible with MP4
Microsoft Edge （EdgeHTML） Correspondence (depending on model)
Microsoft Edge （Chrome） Correspondence
Firefox Correspondence
Google Chrome (recommended browser) Correspondence
Correspondence table by DASH browser
* We are looking for information. Provide information in the comment section.
Recommended browser
YouTube Help from
> YouTube video is available to view in a variety of formats and resolutions. However, some browsers do not support the new video format. Depending on your browser, you may only have one or two video formats to choose from. We recommend that you update your browser or operating system to enjoy watching the video comfortably.
The following is an example of a browser and operating system combination that supports the video format for high-quality YouTube videos.
Google Chrome (all operating systems)
MS Edge
Safari (Mac OS X 10.10 or later)
Firefox (Windows 7 or later and Mac OS X 10.10 or later)
* Internet Explorer is no longer supported.
Video and Audio DASH Correspondence Table
[Caution] In the following table, only those whose use is currently confirmed are listed. Therefore, not all configurations are listed.
Photography
Since the video bit rate is a variable bit rate (VBR), the upper and lower limits are listed. The mean value is somewhere in the middle.
Image format: MP4
DASH value Video size Video bitrate Comments
36 240p (426 × 240) is not clear Validated with Safari on iOS14 (mp4v.20.3, mp4a.40.2)
18 360p (640 × 360) 500K-1 Mbps Validated with Safari on iOS14 (avc1.42001E, mp4a.40.2)
22 720p (1280 × 720) 1-3 Mbps Validated with Safari on iOS14 (avc1.64001F, mp4a.40.2)
160 144p (256 × 144) 50K-90 Kbps Validated with Internet Explorer 11 on Windows 10
133 240p (426 × 240) 150K-580 Kbps Validated with Internet Explorer 11 on Windows 10
134 360p (640 × 360) 200K-1 Mbps Validated with Internet Explorer 11 on Windows 10
135 480p (854 × 480) 250K-2.3 Mbps Validated with Internet Explorer 11 on Windows 10
136 720p (1280 × 720) 30 fps 300K-4.4 Mbps Validated with Internet Explorer 11 on Windows 10
298 720p (1280 × 720) 60 fps 300K-4.4 Mbps Validated with Internet Explorer 11 on Windows 10
137 1080p (1920 × 1080) 30 fps 500K-6.2Mbps Validated with Internet Explorer 11 on Windows 10
299 1080p (1920 × 1080) 60 fps 500K-6.2Mbps Validated with Internet Explorer 11 on Windows 10
Image form: VP9
DASH value Video size Video bitrate Comments
278 144p (256 × 144) 100K-300 Kbps Validated in Firefox
330 144p (256 × 144) (Only HDR compatible terminals can be selected) Validated with Google Pixel 4
242 240p (426 × 240) 100K-500 Kbps Validated in Firefox
331 240p (426 × 240) (Only HDR-compatible terminals can be selected) Validated with Google Pixel 4
243 360p (640 × 360) 200K-950 Kbps Validated in Firefox
332 360p (640 × 360) (Only HDR-compatible terminals can be selected) Validated with Google Pixel 4
244 480p (854 × 480) 300K-2 Mbps Validated in Firefox
333 480p (854 × 480) (Only HDR-compatible terminals can be selected) Validated with Google Pixel 4
247 720p (1280 × 720) 30 fps 600K-4.3
