[FFmpeg-devel] [PATCH v7 2/3] libavformat: Add DFPWM raw format

[Tomas Härdin]

+static const AVOption dfpwm_options[] = {
+    { "sample_rate", "", offsetof(DFPWMAudioDemuxerContext,
sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 0, INT_MAX,
AV_OPT_FLAG_DECODING_PARAM },
+    { "channels",    "", offsetof(DFPWMAudioDemuxerContext, channels),
AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
+    { NULL },
+};

I think you can set the input sample rate and channel count via the
FFmpeg CLI's -ar and -ac options and have them be carried in and out of
here

/Tomas