getting error while converting wav to amr using ffmpeg

8
votes

I am using ffmpeg to convert amr to wav and wav to amr.Its successfully converting amr to wav but not viceversa. As ffmpeg is supporting amr encoder decoder, its giving error.

ffmpeg -i testwav.wav audio.amr

Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height

1
audioffmpegwavamr

1 Answers

14
votes

You can try setting the sample rate and bit rate. Amr supports only 8000Hz sample rate and 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7.95k, 10.2k or 12.2k bit rates:

ffmpeg -i testwav.wav -ar 8000 -ab 12.2k audio.amr