dundakitty
Well-known member
The conversion went well, though I found a few files with imbedded graphics. I ended up using
ffmpeg -i i.mp3 -map_metadata -1 -ac 1 -at 44100 -b:a 64k -vn o.mp3
This is for an old 1937 Zenith radio I gutted and converted to an MP3 player. I'm reading the tunning capacitor and using its value to select a directory on the SD card. The directory's contents are played randomly. I filled up the SD card with old radio broadcasts (Glenn Miller, War-of-the-Worlds, Hindenburg, The Shadow, etc).
Is there a limit to the bit rate of the MP3 decoder? I tried adding some classical music from CDs I have, using a 160Kbps bit rate. I'm having some problems with those files, a small snippet at the start plays and then silence. It might be that the files are stereo instead of mono, though I use a mixer at 0.5 gain on both channels to combine them.
ffmpeg -i i.mp3 -map_metadata -1 -ac 1 -at 44100 -b:a 64k -vn o.mp3
This is for an old 1937 Zenith radio I gutted and converted to an MP3 player. I'm reading the tunning capacitor and using its value to select a directory on the SD card. The directory's contents are played randomly. I filled up the SD card with old radio broadcasts (Glenn Miller, War-of-the-Worlds, Hindenburg, The Shadow, etc).
Is there a limit to the bit rate of the MP3 decoder? I tried adding some classical music from CDs I have, using a 160Kbps bit rate. I'm having some problems with those files, a small snippet at the start plays and then silence. It might be that the files are stereo instead of mono, though I use a mixer at 0.5 gain on both channels to combine them.
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