Create high quality audio for the web

15 MINS
15 minutes to complete this task.
Take a deep breath, practice rolling your r's and learn how to use Adobe Audition to tweak those vocals. 15 minutes to complete this task.

Encoding audio usually takes two forms, encoding audio along with video and encoding audio alone.

Just like the containers and codecs we discussed in our Video Encoding article, audio container files can also contain various audio codec formats. Standard container formats for audio are .MOV, .MP4, .Ogg and .WebM. Some of the standard codec formats are AAC, Vorbis and MP3.

Humans can generally perceive audio discrepancies better than visual ones. The history of this can be traced to early hand turned cinema projectors. The variable speed of a hand-cranked projectors made for an inadequate experience when audio was added to film because of the sensitivity we have to changes in audio.

Keeping this in mind we want to ensure that our audio quality remains constant even if our video quality drops from compression.

We have received some great help from the folks at lynda.com for creating high-quality audio for interviews and tutorials.

THE REAL WORLD EXAMPLE SHOWN BELOW ARE FOR THE SETTINGS USED FOR LYNDA.COM VIDEOS

This is a great setting for high-quality audio.

The Adobe Media Encoder has a number of presets that are great for encoding audio only files for use on in your websites. We take a look at some of these in the video above.

In the video below we'll take a look at the whole process with a real world example.





Host Quality Audio Codec B/R Sample Rate
Vimeo 4:3 - SD AAC-LC 320 48khz
Vimeo 16:9 - SD AAC-LC 320 48khz
Vimeo 720p HD AAC-LC 320 48khz
Vimeo 1080p HD AAC-LC 320 48khz
Vimeo 1080p HD AAC-LC 320 48khz
YouTube 360p AAC-LC 384 96 or 48 khz
YouTube 480p AAC-LC 384 96 or 48 khz
YouTube 720p AAC-LC 384 96 or 48 khz
YouTube 1080p AAC-LC 384 96 or 48 khz
YouTube YouTube 1440p 2K AAC-LC 384 96 or 48 khz
YouTube YouTube 2160p 4K AAC-LC 384 96 or 48 khz

Article Author: Dan Kellett

Dan comes to 123Muse with a background in fashion photography, videography and media creation.

He has worked with many media products as a museum interactive media designer and creative director of a large Miami based agency. Dan works to integrate media software into the Muse workflow.

Skills Highlight:

Photo & Video

Photoshop & Lightroom

Video & Audio

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