44     AVStream *video_st, *audio_st;  in mxg_read_header()  local
55     audio_st = avformat_new_stream(s, NULL);  in mxg_read_header()
56     if (!audio_st)  in mxg_read_header()
58     audio_st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;  in mxg_read_header()
59     audio_st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW;  in mxg_read_header()
60     audio_st->codecpar->channels = 1;  in mxg_read_header()
61     audio_st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;  in mxg_read_header()
62     audio_st->codecpar->sample_rate = 8000;  in mxg_read_header()
63     audio_st->codecpar->bits_per_coded_sample = 8;  in mxg_read_header()
64     audio_st->codecpar->block_align = 1;  in mxg_read_header()
65     avpriv_set_pts_info(audio_st, 64, 1, 1000000);  in mxg_read_header()