Prototypology/Transcodology-2: Difference between revisions
m (Joak moved page Prototypology/Compressology-2 to Prototypology/Transcodology-2) |
No edit summary |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
= How to compress audio? = | = How to compress audio? = | ||
== Why compressing audio? == | |||
<onlyinclude> | |||
=== Why compressing audio? === | |||
* Which formats can be used on a web page? | * Which formats can be used on a web page? | ||
| Line 7: | Line 9: | ||
** [https://caniuse.com/?search=opus opus] | ** [https://caniuse.com/?search=opus opus] | ||
== The fancy and hard way == | === The fancy and hard way === | ||
Uses FFmpeg. FFmpeg is a powerful, open-source tool for decoding, encoding, and manipulating multimedia files. | Uses FFmpeg. FFmpeg is a powerful, open-source tool for decoding, encoding, and manipulating multimedia files. | ||
<pre> | <pre> | ||
| Line 26: | Line 28: | ||
** opus https://opus-codec.org/ | ** opus https://opus-codec.org/ | ||
== The easy way == | === The easy way === | ||
Use [https://www.audacityteam.org/ audacity] :D | Use [https://www.audacityteam.org/ audacity] :D | ||
# Open the file with audacity | # Open the file with audacity | ||
| Line 37: | Line 39: | ||
# Click on [Save] | # Click on [Save] | ||
== Further readings == | === Further readings === | ||
* [https://en.wikipedia.org/wiki/Compression_artifact#Audio Audio compression artifacts] | * [https://en.wikipedia.org/wiki/Compression_artifact#Audio Audio compression artifacts] | ||
* [http://computationalculture.net/reflections-on-the-mp3-format/ Interview with Jonathan Sterne] | * [http://computationalculture.net/reflections-on-the-mp3-format/ Interview with Jonathan Sterne] | ||
</onlyinclude> | |||
Latest revision as of 15:10, 10 September 2025
How to compress audio?
Why compressing audio?
The fancy and hard way
Uses FFmpeg. FFmpeg is a powerful, open-source tool for decoding, encoding, and manipulating multimedia files.
ffmpeg -i input.wav -b:a 128k output.mp3
- the option "-i" is the input file
- the option "-b:a" specifies the bit rate. its in kilobit per seconds. more bit less information is lost. possible option could be:
- 96k
- 112k
- 128k
- 160k
- 192k
- 256k
- 320k
- the last argument is the output file. with the format(.mp3) you define the compression format. options for audio would be:
- mp3
- ogg (or oga) https://www.xiph.org/ogg/
- opus https://opus-codec.org/
The easy way
Use audacity :D
- Open the file with audacity
- Click on [File] -> [Export]
- Select [Export as MP3]
- Select [Export as OGG]
- Select [Export Audio ...] for opus
- In the new window that open you can select different format optins.
- select a name for the new file
- Click on [Save]