Comments on 2019-01-01 Episode 09

Hm, looks like the MP3 players on my phone can’t play it! I tried to simply concatenation the jingle MP3 and the episode MP3 which worked well enough on my laptop (I think?) – anyway, fixed that and uploaded a new file, changed the publishing date and you should be seeing a working file, now! And if it worked well enough the first time around, I’m sorry you had to download it twice.

For my future self:

  1. send recording to myself via mail
  2. on the laptop, save the M4A file
  3. use Audacity to trim the file and export as WAV
  4. use the following command:
ffmpeg -i jingle-1.mp3 -i recording.wav \
       -filter_complex [0:a][1:a]concat=n=2:v=0:a=1 \
       -codec:v copy -codec:a libmp3lame -q:a 7 \

If there’s no need for editing and trimming, use the M4A file instead of the WAV file and it’ll work just fine.

Based on an answer I saw online. Note that the simpler ffmpeg -f concat -i list.txt -c copy out.mp3 works as advertised and you can play it using mpg321 but when you try to play it from Firefox, it doesn’t work, and it also doesn’t work when I try to play it from iCatcher on the iPhone. I guess testing it from Firefox is a good idea. :)

– Alex Schroeder 2019-01-03 14:14 UTC

Don’t worry about the artillery fire in the background. That’s the fireworks at midnight. 🙄

– Alex Schroeder 2019-01-03 15:49 UTC

Listening to this episode, I find that I am rambling quite a bit. I got confused listening to it myself! I should not record episodes after midnight!

– Alex Schroeder 2019-01-03 17:19 UTC

Please make sure you contribute only your own work, or work licensed under the GNU Free Documentation License. Note: in order to facilitate peer review and fight vandalism, we will store your IP number for a number of days. See Privacy Policy for more information. See Info for text formatting rules. You can edit this page if you need to fix typos. You can subscribe to updates by email without leaving a comment.

To save this page you must answer this question:

Please say HELLO.