[auto-inserted resampler 0 @ 0370F920] chl:mono fmt:s16 r:48000Hz -> chl:mono fmt:s16 r:47104Hz
[auto-inserted resampler 1 @ 0370FA40] chl:mono fmt:s16 r:48000Hz -> chl:mono fmt:s16 r:47104Hz
[Parsed_aechocancel_2 @ 03E80E80] using number of samples 47104 for 1000 ms at 47104 hz
Output #0, wav, to ‘yo.wav’:
Metadata:
encoder : Lavf54.25.104
Stream #0:0, 0, 1/47104: Audio: pcm_s16le ([1][0][0][0] / 0×0001), 47104 Hz, mono, s16, 753 kb/s
Stream mapping:
Stream #0:0 (pcm_s16le) -> asetnsamples
the 47104 meant “you are advertising \
ff_set_common_samplerates(ctx, ff_make_format_list(sample_rates));
but should
ff_set_common_samplerates(ctx, (sample_rates));