[FFmpeg-devel] [PATCH 3/8] decklink: Introduce support for capture of multiple audio streams

[Carl Eugen Hoyos]

2017-12-29 19:12 GMT+01:00 Devin Heitmueller <dheitmueller at ltnglobal.com>:

> +        for (int i = 0; i < ctx->max_audio_channels / 2; i++) {
> +            st = avformat_new_stream(avctx, NULL);
> +            if (!st) {
> +                av_log(avctx, AV_LOG_ERROR, "Cannot add stream %d\n", i);
> +                ret = AVERROR(ENOMEM);
> +                goto error;
> +            }
> +            st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
> +            st->codecpar->codec_id    = ctx->audio_depth == 32 ?
> AV_CODEC_ID_PCM_S32LE : AV_CODEC_ID_PCM_S16LE;
> +            st->codecpar->sample_rate = bmdAudioSampleRate48kHz;
> +            st->codecpar->channels    = 2;
> +            avpriv_set_pts_info(st, 64, 1, 1000000);  /* 64 bits pts in us */
> +            ctx->audio_st[i] = st;
> +            ctx->num_audio_streams++;
> +        }

I would have expected that the channel_layout is set to STEREO in
this case, is that not always true?

Carl Eugen