Format selection can fail if unknown channel layouts are used
with filters that do not support it.
av_log(link->src, AV_LOG_ERROR, "Cannot select channel layout for"
" the link between filters %s and %s.\n", link->src->name,
link->dst->name);
+ if (!link->in_channel_layouts->all_counts)
+ av_log(link->src, AV_LOG_ERROR, "Unknown channel layouts not "
+ "supported, try specifying a channel layout using "
+ "'aformat=channel_layouts=something'.\n");
return AVERROR(EINVAL);
}
link->in_channel_layouts->nb_channel_layouts = 1;