[FFmpeg-user] Converting a cassette audio tape (Lecture) to mp3

jd1008 jd1008 at gmail.com
Sun Jul 12 20:50:42 CEST 2015

On 07/12/2015 12:36 PM, Moritz Barsnick wrote:
> On Sun, Jul 12, 2015 at 12:20:25 -0600, jd1008 wrote:
>> OK, so of the 2 ffmpeg's I have installed, I hope one of them will
>> support either pulse or alsa.
> If your older ffmpeg is the one from the rpmfusion repo, then: It
> certainly supports both.
> Check with:
> $ ffmpeg -devices | grep -E "alsa|pulse"
>> I will look at other ffmpeg command line options that might be needed
>> to enhance the quality of the recording. As you well know, the audio
>> quality (or more precisely, lack thereof) of tapes and the ambient noises
>> during tape recording, and even the audio quirks of the microphone itself
>> contribute greatly to the noise factor.
> Ah, well, that makes things more difficult. Except for bandpass, ffmpeg
> probably doesn't have the right kind of filters. (Feel free to prove me
> wrong.) You may want to capture to a high-quality lossless format (PCM)
> with ffmpeg and then apply some advanced filters from other tools:
> http://wiki.audacityteam.org/wiki/Sanitizing_speech_recordings_made_with_portable_audio_recorders
> Cheers,
> Moritz
Thank you Morritz. Those are interesting and informative points made on 
the wiki page.

Kind regards,


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