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 \
       recording.mp3

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


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