ffmpeg update to june 23 version which fixes mp4 crash on still frames with 3...

source/patched-ffmpeg-mt/libavformat/avformat.h

 /*
  * copyright (c) 2001 Fabrice Bellard
  *
  * 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.
  *
@@ skipping 551 matching lines @@
     AVRational time_base;   ///< time base in which the start/end timestamps are specified
     int64_t start, end;     ///< chapter start/end time in time_base units
 #if LIBAVFORMAT_VERSION_INT < (53<<16)
     char *title;            ///< chapter title
 #endif
     AVMetadata *metadata;
 } AVChapter;
 
 #if LIBAVFORMAT_VERSION_MAJOR < 53
 #define MAX_STREAMS 20
-#else
-#define MAX_STREAMS 100
 #endif
 
 /**
  * Format I/O context.
  * New fields can be added to the end with minor version bumps.
  * Removal, reordering and changes to existing fields require a major
  * version bump.
  * sizeof(AVFormatContext) must not be used outside libav*.
  */
 typedef struct AVFormatContext {
@@ skipping 778 matching lines @@
 
 /**
  * Returns a positive value if the given filename has one of the given
  * extensions, 0 otherwise.
  *
  * @param extensions a comma-separated list of filename extensions
  */
 int av_match_ext(const char *filename, const char *extensions);
 
 #endif /* AVFORMAT_AVFORMAT_H */