libavformat/rtpdec_qt.c:81: error: Integer Overflow L2
  ([0, 64] - [0, 64]):unsigned32 by call to `bitstream_skip`.

libavformat/rtpdec_qt.c:75:5: Call
73.      * http://developer.apple.com/quicktime/icefloe/dispatch026.html
74.      */
75.     bitstream_init(&bc, buf, len << 3);
        ^
76.     ffio_init_context(&pb, buf, len, 0, NULL, NULL, NULL, NULL);
77. 

libavcodec/bitstream.h:85:9: Assignment
  83.         bc->buffer    =
  84.         bc->ptr       = NULL;
  85.         bc->bits_left = 0;
              ^
  86.         return AVERROR_INVALIDDATA;
  87.     }

libavformat/rtpdec_qt.c:81:5: Call
79.         return AVERROR_INVALIDDATA;
80. 
81.     bitstream_skip(&bc, 4); // version
        ^
82.     if ((packing_scheme = bitstream_read(&bc, 2)) == 0)
83.         return AVERROR_INVALIDDATA;

libavcodec/bitstream.h:241:1: Parameter `n`
  239. 
  240. /* Skip n bits in the buffer. */
  241. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
       ^
  242. {
  243.     if (n <= bc->bits_left)

libavcodec/bitstream.h:247:9: Call
  245.     else {
  246.         n -= bc->bits_left;
  247.         skip_remaining(bc, bc->bits_left);
               ^
  248.         if (n >= 64) {
  249.             unsigned skip = n / 8;

libavcodec/bitstream.h:230:1: <LHS trace>
228. }
229. 
230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
231. {
232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: Parameter `bc->bits_left`
    228. }
    229. 
    230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
         ^
    231. {
    232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: <RHS trace>
228. }
229. 
230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
231. {
232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: Parameter `n`
    228. }
    229. 
    230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
         ^
    231. {
    232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:237:5: Binary operation: ([0, 64] - [0, 64]):unsigned32 by call to `bitstream_skip` 
    235.     bc->bits <<= n;
    236. #endif
    237.     bc->bits_left -= n;
             ^
    238. }
    239. 
