==22649== Jump to the invalid address stated on the next line
==22649==    at 0x0: ???
==22649==    by 0x5E4F815: add_dct (mpegvideo.c:1883)
==22649==    by 0x5E4F815: mpv_reconstruct_mb_internal (mpegvideo.c:2098)
==22649==    by 0x5E4F815: ff_mpv_reconstruct_mb (mpegvideo.c:2220)
==22649==    by 0x5AF7FA0: guess_mv (error_resilience.c:640)
==22649==    by 0x5AF7FA0: ff_er_frame_end (error_resilience.c:1231)
==22649==    by 0x5B60282: ff_h263_decode_frame (h263dec.c:670)
==22649==    by 0x5A9EE08: decode_simple_internal (decode.c:398)
==22649==    by 0x5A9EE08: decode_simple_receive_frame (decode.c:594)
==22649==    by 0x5A9EE08: decode_receive_frame_internal (decode.c:612)
==22649==    by 0x5A9EA7A: avcodec_send_packet (decode.c:674)
==22649==    by 0x42239A: decode (ffmpeg.c:2238)
==22649==    by 0x42239A: decode_video (ffmpeg.c:2382)
==22649==    by 0x42239A: process_input_packet (ffmpeg.c:2623)
==22649==    by 0x41F54F: process_input (ffmpeg.c:4460)
==22649==    by 0x41F54F: transcode_step (ffmpeg.c:4580)
==22649==    by 0x41F54F: transcode (ffmpeg.c:4634)
==22649==    by 0x41BD33: main (ffmpeg.c:4840)
==22649==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==22649==
==22649==
==22649== Process terminating with default action of signal 11 (SIGSEGV)
==22649==  Bad permissions for mapped region at address 0x0
==22649==    at 0x0: ???
==22649==    by 0x5E4F815: add_dct (mpegvideo.c:1883)
==22649==    by 0x5E4F815: mpv_reconstruct_mb_internal (mpegvideo.c:2098)
==22649==    by 0x5E4F815: ff_mpv_reconstruct_mb (mpegvideo.c:2220)
==22649==    by 0x5AF7FA0: guess_mv (error_resilience.c:640)
==22649==    by 0x5AF7FA0: ff_er_frame_end (error_resilience.c:1231)
==22649==    by 0x5B60282: ff_h263_decode_frame (h263dec.c:670)
==22649==    by 0x5A9EE08: decode_simple_internal (decode.c:398)
==22649==    by 0x5A9EE08: decode_simple_receive_frame (decode.c:594)
==22649==    by 0x5A9EE08: decode_receive_frame_internal (decode.c:612)
==22649==    by 0x5A9EA7A: avcodec_send_packet (decode.c:674)
==22649==    by 0x42239A: decode (ffmpeg.c:2238)
==22649==    by 0x42239A: decode_video (ffmpeg.c:2382)
==22649==    by 0x42239A: process_input_packet (ffmpeg.c:2623)
==22649==    by 0x41F54F: process_input (ffmpeg.c:4460)
==22649==    by 0x41F54F: transcode_step (ffmpeg.c:4580)
==22649==    by 0x41F54F: transcode (ffmpeg.c:4634)
==22649==    by 0x41BD33: main (ffmpeg.c:4840)
==22649==
==22649== HEAP SUMMARY:
==22649==     in use at exit: 23,353,187 bytes in 3,762 blocks
==22649==   total heap usage: 6,256 allocs, 2,494 frees, 37,010,746 bytes allocated
==22649==
==22649== LEAK SUMMARY:
==22649==    definitely lost: 55,296 bytes in 14 blocks
==22649==    indirectly lost: 0 bytes in 0 blocks
==22649==      possibly lost: 2,304 bytes in 8 blocks
==22649==    still reachable: 23,295,587 bytes in 3,740 blocks
==22649==         suppressed: 0 bytes in 0 blocks
==22649== Rerun with --leak-check=full to see details of leaked memory
==22649==
==22649== For counts of detected and suppressed errors, rerun with: -v
==22649== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
Segmentation fault