ffmpeg.c:2739: error: Null Dereference
  pointer `codec` last assigned on line 2732 could be null and is dereferenced at line 2739, column 8.

ffmpeg.c:2725:1: start of procedure find_codec_or_die()
2723. }
2724. 
2725. static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
      ^
2726. {
2727.     const char *codec_string = encoder ? "encoder" : "decoder";

ffmpeg.c:2727:32: Condition is true
2725. static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2726. {
2727.     const char *codec_string = encoder ? "encoder" : "decoder";
                                     ^
2728.     AVCodec *codec;
2729. 

ffmpeg.c:2727:5: 
2725. static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2726. {
2727.     const char *codec_string = encoder ? "encoder" : "decoder";
          ^
2728.     AVCodec *codec;
2729. 

ffmpeg.c:2730:9: Taking false branch
2728.     AVCodec *codec;
2729. 
2730.     if(!name)
              ^
2731.         return CODEC_ID_NONE;
2732.     codec = encoder ?

ffmpeg.c:2732:13: Condition is true
2730.     if(!name)
2731.         return CODEC_ID_NONE;
2732.     codec = encoder ?
                  ^
2733.         avcodec_find_encoder_by_name(name) :
2734.         avcodec_find_decoder_by_name(name);

ffmpeg.c:2732:5: 
2730.     if(!name)
2731.         return CODEC_ID_NONE;
2732.     codec = encoder ?
          ^
2733.         avcodec_find_encoder_by_name(name) :
2734.         avcodec_find_decoder_by_name(name);

ffmpeg.c:2735:9: Taking true branch
2733.         avcodec_find_encoder_by_name(name) :
2734.         avcodec_find_decoder_by_name(name);
2735.     if(!codec) {
              ^
2736.         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2737.         av_exit(1);

ffmpeg.c:2736:9: Skipping av_log(): empty list of specs
2734.         avcodec_find_decoder_by_name(name);
2735.     if(!codec) {
2736.         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
              ^
2737.         av_exit(1);
2738.     }

ffmpeg.c:2737:9: Skipping av_exit(): empty list of specs
2735.     if(!codec) {
2736.         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2737.         av_exit(1);
              ^
2738.     }
2739.     if(codec->type != type) {

ffmpeg.c:2739:8: 
2737.         av_exit(1);
2738.     }
2739.     if(codec->type != type) {
             ^
2740.         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2741.         av_exit(1);

static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
{
    const char *codec_string = encoder ? "encoder" : "decoder";
    AVCodec *codec;
    if(!name)
        return CODEC_ID_NONE;
    codec = encoder ?
        avcodec_find_encoder_by_name(name) :
        avcodec_find_decoder_by_name(name);
    if(!codec) {
        av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
        av_exit(1);
    }
    if(codec->type != type) {
        av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
        av_exit(1);
    }
    return codec->id;
}
['static enum CodecID find_codec_or_die(const char *name, int type, int encoder)\n{\n    const char *codec_string = encoder ? "encoder" : "decoder";\n    AVCodec *codec;\n    if(!name)\n        return CODEC_ID_NONE;\n    codec = encoder ?\n        avcodec_find_encoder_by_name(name) :\n        avcodec_find_decoder_by_name(name);\n    if(!codec) {\n        av_log(NULL, AV_LOG_ERROR, "Unknown %s \'%s\'\\n", codec_string, name);\n        av_exit(1);\n    }\n    if(codec->type != type) {\n        av_log(NULL, AV_LOG_ERROR, "Invalid %s type \'%s\'\\n", codec_string, name);\n        av_exit(1);\n    }\n    return codec->id;\n}']