[FFmpeg-user] Sampling frequency conversion

Carl Eugen Hoyos cehoyos at ag.or.at
Mon Jul 15 13:27:29 CEST 2013

rohit a <rohit.tvm.86 <at> gmail.com> writes:

> ./ffmpeg -i  input.mpeg  output.avi -ar 24000

(Complete, uncut console output missing, note that 
ffmpeg prints a warning here explaining that 
something is wrong with the command line.)

The general ffmpeg syntax is:
$ ffmpeg [input file 1 options] -i input_file-1 
[[input file x options] -i input_file_x]
[output file 1 options] output_file_1
[[output file x options] output_file_x]

Your command line asks ffmeg to change the sample 
rate for the second output file to 24kHz but you 
did not define a second output file.

Carl Eugen

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