I am compressing movies from bitmaps and AAC files. Normally AAC files are recorded with following params: bit rate: 192000, sampling rate 44100. These audio params are set in output context (AVFormatContext) in compression. In happy day scenario it is working correctly. Movie and sound are correct.
The problem occures if sound params are "strange". From time to time I have AAC files recorded with params: bitrate 96000, sampling rate 16000. In this case sound is very fast and ends before end of movie. If I set these params (96000, 16000) in output context there is no sound in the movie at all. Created movie file has audio stream with bitrate about 500 b/s what is really strange. What else has to be set in FFMPEG to correctly compress AAC files with bit rate 96000 and sampling rate 16000? I am using FFMPEG 2.1 and native AAC encoder.
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