How to record audio of a stream radio at scheduled times with FFmpeg in CentOS?

Question

I would like to do a similar service to censury.com.br, something that records my radio at certain times, in .mp3 files with different names according to the recording. EX: stream08-19-2019-22-00.mp3

I'm very new but ffmpeg sounds like the perfect way to record my favorite radio shows.

I like some specific times of three radios and a VPS with CentOS, to be able to record these programs would be amazing.

Answer 1

One time recording

You can use the at command do schedule a command or script:

at 14:30:00

A prompt will appear where you can enter your scheduled command:

at > ffmpeg -i input -t 01:00:00 -c copy "$(date +%F_%H-%M-%S).m4a"

The example above will record for one hour (-t 01:00:00).

To save press ctrl + d.

To view the scheduled job use the atq command.

Repetitive recording

You can use crontab to create cron jobs that will be executed on a periodic, fixed schedule:

crontab -e

Then enter your command:

0 16 * * 3 ffmpeg -i input -t 01:00:00 -c copy "$(date +%F_%H-%M-%S).m4a"

The above example will record every Wednesday at 16:00 for one hour (-t 01:00:00).

You can view your cron jobs with crontab -l.