The warning silenced was:
libavfilter/af_join.c: In function ‘join_request_frame’:
libavfilter/af_join.c:451:9: warning: ‘nb_samples’ may be used uninitialized in this function [-Wuninitialized]
JoinBufferPriv *priv;
int linesize = INT_MAX;
int perms = ~0;
JoinBufferPriv *priv;
int linesize = INT_MAX;
int perms = ~0;
int i, j, ret;
/* get a frame on each input */
int i, j, ret;
/* get a frame on each input */
perms &= cur_buf->perms;
}
perms &= cur_buf->perms;
}
+ av_assert0(nb_samples > 0);
buf = avfilter_get_audio_buffer_ref_from_arrays(s->data, linesize, perms,
nb_samples, outlink->format,
outlink->channel_layout);
buf = avfilter_get_audio_buffer_ref_from_arrays(s->data, linesize, perms,
nb_samples, outlink->format,
outlink->channel_layout);