static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output) { AVSubtitle subtitle; int i, ret = avcodec_decode_subtitle2(ist->dec_ctx, &subtitle, got_output, pkt); if (ret < 0) return ret; if (!*got_output) return ret; ist->frames_decoded++; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (!check_output_constraints(ist, ost) || !ost->encoding_needed) continue; do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts); } avsubtitle_free(&subtitle); return ret; }