Hello,

When I resample an audio file to the AV_SAMPLE_FMT_DBLP sample format with 
libswresample, I get some values out of the interval -1, 1. It happens when I 
resample from 44100 to 48000 for example. I tried to use the rematrix_maxval 
option like this :

  SwrContext *ctx = swr_alloc();
  ...
  av_opt_set_double(ctx, "rematrix_maxval", 1, 0);
  swr_init(ctx);

but it have no effect.
Does the way I use it are supposed to guarantee values between -1 and 1 or did 
I not understand its purpose?
I can solve the problem by setting the rematrix_volume option to 0.96 but I'm 
not sure it will work in all cases.

I wonder if being in 32 bits can be the cause of the problem.

Thank you in advance for your attention.
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