@@ -146,6 +146,17 @@ char *av_timecode_make_mpeg_tc_string(char *buf, uint32_t tc25bit)

     return buf;

 }

+static int check_fps(int fps)

+{

+    int i;

+    static const int supported_fps[] = {24, 25, 30, 50, 60};

+

+    for (i = 0; i < FF_ARRAY_ELEMS(supported_fps); i++)

+        if (fps == supported_fps[i])

+            return 0;

+    return -1;

+}

+

 static int check_timecode(void *log_ctx, AVTimecode *tc)

 {

     if (tc->fps <= 0) {

@@ -156,18 +167,12 @@ static int check_timecode(void *log_ctx, AVTimecode *tc)

         av_log(log_ctx, AV_LOG_ERROR, "Drop frame is only allowed with 30000/1001 FPS\n");

         return AVERROR(EINVAL);

     }

-    switch (tc->fps) {

-    case 24:

-    case 25:

-    case 30:

-    case 50:

-    case 60: return  0;

-

-    default:

+    if (check_fps(tc->fps) < 0) {

         av_log(log_ctx, AV_LOG_ERROR, "Timecode frame rate %d/%d not supported\n",

                tc->rate.num, tc->rate.den);

         return AVERROR_PATCHWELCOME;

     }

+    return 0;

 }

 static int fps_from_frame_rate(AVRational rate)

@@ -177,6 +182,11 @@ static int fps_from_frame_rate(AVRational rate)

     return (rate.num + rate.den/2) / rate.den;

 }

+int av_timecode_check_frame_rate(AVRational rate)

+{

+    return check_fps(fps_from_frame_rate(rate));

+}

+

 int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)

 {

     memset(tc, 0, sizeof(*tc));

@@ -140,4 +140,11 @@ int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start

  */

 int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx);

+/**

+ * Check if the timecode feature is available for the given frame rate

+ *

+ * @return 0 if supported, <0 otherwise

+ */

+int av_timecode_check_frame_rate(AVRational rate);

+

 #endif /* AVUTIL_TIMECODE_H */

@@ -39,8 +39,8 @@

  */

 #define LIBAVUTIL_VERSION_MAJOR 51

-#define LIBAVUTIL_VERSION_MINOR 66

-#define LIBAVUTIL_VERSION_MICRO 101

+#define LIBAVUTIL_VERSION_MINOR 67

+#define LIBAVUTIL_VERSION_MICRO 100

 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

                                                LIBAVUTIL_VERSION_MINOR, \