for (i = 0; i < graph->nb_filters; i++) {
if (graph->filters[i] == filter) {
FFSWAP(AVFilterContext*, graph->filters[i],
graph->filters[graph->nb_filters - 1]);
graph->nb_filters--;
for (i = 0; i < graph->nb_filters; i++) {
if (graph->filters[i] == filter) {
FFSWAP(AVFilterContext*, graph->filters[i],
graph->filters[graph->nb_filters - 1]);
graph->nb_filters--;