libavformat/rtpdec_h261.c:126: error: Integer Overflow L2
  ([1, +oo] - [1, 8-min(0, `rtp_h261_ctx->endbyte_bits`)]):unsigned32 by call to `bitstream_read`.

libavformat/rtpdec_h261.c:47:1: Parameter `rtp_h261_ctx->endbyte_bits`
45. }
46. 
47. static int h261_handle_packet(AVFormatContext *ctx, PayloadContext *rtp_h261_ctx,
    ^
48.                               AVStream *st, AVPacket *pkt, uint32_t *timestamp,
49.                               const uint8_t *buf, int len, uint16_t seq,

libavformat/rtpdec_h261.c:126:42: Call
124.             bitstream_skip(&bc, sbit);
125.             if (rtp_h261_ctx->endbyte_bits) {
126.                 rtp_h261_ctx->endbyte |= bitstream_read(&bc, 8 - rtp_h261_ctx->endbyte_bits);
                                              ^
127.                 avio_w8(rtp_h261_ctx->buf, rtp_h261_ctx->endbyte);
128.             }

libavcodec/bitstream.h:183:1: Parameter `n`
  181. 
  182. /* Return n bits from the buffer. n has to be in the 0-32 range. */
  183. static inline uint32_t bitstream_read(BitstreamContext *bc, unsigned n)
       ^
  184. {
  185.     if (!n)

libavcodec/bitstream.h:194:12: Call
  192.     }
  193. 
  194.     return get_val(bc, n);
                  ^
  195. }
  196. 

libavcodec/bitstream.h:130:1: <LHS trace>
128. }
129. 
130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
131. {
132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: Parameter `bc->bits_left`
    128. }
    129. 
    130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    131. {
    132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: <RHS trace>
128. }
129. 
130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
131. {
132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:130:1: Parameter `n`
    128. }
    129. 
    130. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    131. {
    132. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:139:5: Binary operation: ([1, +oo] - [1, 8-min(0, rtp_h261_ctx->endbyte_bits)]):unsigned32 by call to `bitstream_read` 
    137.     bc->bits <<= n;
    138. #endif
    139.     bc->bits_left -= n;
             ^
    140. 
    141.     return ret;
