[FFmpeg-user] Issue when encoding a MP4 video

Léonce ANDRIANJAFY radoherve at gmail.com
Wed Jul 12 15:39:42 EEST 2017

I try to convert a MP4 video with a libspeex audio codec to an another one
but with an aac audio codec. In other words, I would like to only get the
audio stream re-encoded

I launch the command below:
*ffmpeg -i 1281904405.mp4 -vcodec copy -acodec libvo_aacenc -ab 32k

But still I got this error:
*[mp4 @ 0x646be0] Application provided invalid, non monotonically
increasing dts to muxer in stream 0: 16 >= 16*
*av_interleaved_write_frame(): Invalid argument*

Could you help me please?




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