if (fg->inputs[j]->ist->sub2video.sub_queue) {
while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
AVSubtitle sub;
if (fg->inputs[j]->ist->sub2video.sub_queue) {
while (av_fifo_size(fg->inputs[j]->ist->sub2video.sub_queue)) {
AVSubtitle sub;