diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c index 0a77d07ecf..d54f97d5e8 100644 --- a/libavfilter/graphparser.c +++ b/libavfilter/graphparser.c @@ -50,8 +50,14 @@ static int create_filter(AVFilterGraph *ctx, int index, char *name, char tmp[20]; snprintf(tmp, 20, "%d", index); - if(!(filterdef = avfilter_get_by_name(name)) || - !(filt = avfilter_open(filterdef, tmp))) { + + if(!(filterdef = avfilter_get_by_name(name))) { + av_log(&log_ctx, AV_LOG_ERROR, + "no such filter: '%s'\n", name); + return -1; + } + + if(!(filt = avfilter_open(filterdef, tmp))) { av_log(&log_ctx, AV_LOG_ERROR, "error creating filter '%s'\n", name); return -1; @@ -62,7 +68,7 @@ static int create_filter(AVFilterGraph *ctx, int index, char *name, if(avfilter_init_filter(filt, args, NULL)) { av_log(&log_ctx, AV_LOG_ERROR, - "error initializing filter '%s'\n", name); + "error initializing filter '%s' with args '%s'\n", name, args); return -1; }