2018-08-20 19:20 GMT+02:00, ananth123 <86ananth at gmail.com>: > 302001014794094.wav > <http://www.ffmpeg-archive.org/file/t378828/302001014794094.wav> Thank you for the sample, I attached it to ticket #4553. As the console output tried to tell you, G.729 stereo is not supported, patch welcome! Carl Eugen