diff options
| -rw-r--r-- | libavfilter/af_channelmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavfilter/af_channelmap.c b/libavfilter/af_channelmap.c index c3454c5b69..2a43c12af2 100644 --- a/libavfilter/af_channelmap.c +++ b/libavfilter/af_channelmap.c @@ -93,6 +93,8 @@ static int get_channel_idx(char **map, int *ch, char delim, int max_ch) int n = 0; if (!next && delim == '-') return AVERROR(EINVAL); + if (!*map) + return AVERROR(EINVAL); len = strlen(*map); sscanf(*map, "%d%n", ch, &n); if (n != len) |