#tb 0: 1/8000
#media_type 0: audio
#codec_id 0: pcm_s16le
#sample_rate 0: 8000
#channel_layout_name 0: mono
0, 0, 0, 240, 480, 0x7f6f3970
0, 240, 240, 240, 480, 0x1105a0d3