[Libav-user] av_probe_input_buffer wont recognize AAC

Christoph Winter mail.christoph.winter at googlemail.com
Sat Feb 11 18:12:14 CET 2012

Hey Andrey,
thanks for your reply.

1) ffprobe recognizes the correct sample_rate (av_open_input_file, too)
4) I tried that before but it did not work neither

2-3) I uploaded a small sample including the mp4 file: 
It's a small Qt project so you need qmake and maybe also change the LIB 
paths in the .pro file to compile. You should see that in the first 
av_dump_format the sample_rate in the aac audio stream is missing.

Thanks in advance,

Am 10.02.2012 21:08, schrieb Andrey Utkin:
> 1. Try with ffprobe util, and share the results here.
> 2. Share your sample files.
> 3. If problem reproduces with your app only, provide simplified, but
> compiling&running&reproducing code sample.
> 4. Try increasing AVFormatContext.max_analyze_duration over
> 5*1000*1000, also .probe_size to sth more than default.

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