@@ -884,6 +884,9 @@ the new default-base-is-moof flag instead. This flag is new from

 14496-12:2012. This may make the fragments easier to parse in certain

 circumstances (avoiding basing track fragment location calculations

 on the implicit end of the previous track fragment).

+@item -write_tmcd

+Specify @code{on} to force writing a timecode track, @code{off} to disable it

+and @code{auto} to write a timecode track only for mov and mp4 output (default).

 @end table

 @subsection Example

@@ -90,6 +90,7 @@ static const AVOption options[] = {

     { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },

     { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },

     { "use_stream_ids_as_track_ids", "use stream ids as track ids", offsetof(MOVMuxContext, use_stream_ids_as_track_ids), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

+    { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},

     { NULL },

 };

@@ -2312,7 +2313,7 @@ static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext

     } else if (track->tag == MKTAG('r','t','p',' ')) {

         mov_write_hmhd_tag(pb);

     } else if (track->tag == MKTAG('t','m','c','d')) {

-        if (track->mode == MODE_MP4)

+        if (track->mode != MODE_MOV)

             mov_write_nmhd_tag(pb);

         else

             mov_write_gmhd_tag(pb, track);

@@ -5539,7 +5540,8 @@ static int mov_write_header(AVFormatContext *s)

         }

     }

-    if (mov->mode == MODE_MOV || mov->mode == MODE_MP4) {

+    if (   mov->write_tmcd == -1 && (mov->mode == MODE_MOV || mov->mode == MODE_MP4)

+        || mov->write_tmcd == 1) {

         tmcd_track = mov->nb_streams;

         /* +1 tmcd track for each video stream with a timecode */

@@ -219,6 +219,7 @@ typedef struct MOVMuxContext {

     int use_stream_ids_as_track_ids;

     int track_ids_ok;

+    int write_tmcd;

 } MOVMuxContext;

 #define FF_MOV_FLAG_RTP_HINT              (1 <<  0)