int64_t old_pos = avctx->pb->pos;
if (av_interleaved_write_frame(avctx, const_cast<AVPacket *>(&pkt)) < 0) {
fprintf(stderr, "av_interleaved_write_frame() failed\n");
int64_t old_pos = avctx->pb->pos;
if (av_interleaved_write_frame(avctx, const_cast<AVPacket *>(&pkt)) < 0) {
fprintf(stderr, "av_interleaved_write_frame() failed\n");