audio_dec->codec_type = AVMEDIA_TYPE_AUDIO;
audio_dec->codec_id = AV_CODEC_ID_ADPCM_IMA_APC;
audio_dec->channels = 1;
- audio_dec->channels = AV_CH_LAYOUT_MONO;
+ audio_dec->channel_layout = AV_CH_LAYOUT_MONO;
audio_dec->sample_rate = 22050;
// Video