avfilter/vsrc_sierpinski: change seed option type

libavfilter/vsrc_sierpinski.c

@@ -43,7 +43,7 @@ typedef struct SierpinskiContext {
     AVRational frame_rate;
     uint64_t pts;
 
-    unsigned int seed;
+    int64_t seed;
     int jump;
 
     int pos_x, pos_y;
@@ -61,7 +61,7 @@ static const AVOption sierpinski_options[] = {
     {"s",    "set frame size", OFFSET(w),          AV_OPT_TYPE_IMAGE_SIZE, {.str="640x480"}, 0,          0, FLAGS },
     {"rate", "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"},      0,          0, FLAGS },
     {"r",    "set frame rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"},      0,          0, FLAGS },
-    {"seed", "set the seed",   OFFSET(seed),       AV_OPT_TYPE_INT,        {.i64=-1},       -1, UINT32_MAX, FLAGS },
+    {"seed", "set the seed",   OFFSET(seed),       AV_OPT_TYPE_INT64,      {.i64=-1},       -1, UINT32_MAX, FLAGS },
     {"jump", "set the jump",   OFFSET(jump),       AV_OPT_TYPE_INT,        {.i64=100},       1,      10000, FLAGS },
     {"type","set fractal type",OFFSET(type),       AV_OPT_TYPE_INT,        {.i64=0},         0,          1, FLAGS, "type" },
     {"carpet", "sierpinski carpet", 0,             AV_OPT_TYPE_CONST,      {.i64=0},         0,          0, FLAGS, "type" },