Remove pthreads patch, roll in new patches, disable unchecked bit readers.

libavcodec/mpeg4video_parser.c

 /*
  * MPEG4 Video frame extraction
  * Copyright (c) 2003 Fabrice Bellard
  * Copyright (c) 2003 Michael Niedermayer
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define UNCHECKED_BITSTREAM_READER 1
-
 #include "parser.h"
 #include "mpegvideo.h"
 #include "mpeg4video.h"
 #include "mpeg4video_parser.h"
 
 
 int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
     int vop_found, i;
     uint32_t state;
 
@@ skipping 99 matching lines @@
 
 
 AVCodecParser ff_mpeg4video_parser = {
     .codec_ids      = { CODEC_ID_MPEG4 },
     .priv_data_size = sizeof(ParseContext1),
     .parser_init    = mpeg4video_parse_init,
     .parser_parse   = mpeg4video_parse,
     .parser_close   = ff_parse1_close,
     .split          = ff_mpeg4video_split,
 };