timecode: set a fixed buffer size of 16B for tc string.

1 files changed, 2 insertions, 2 deletions

diff --git a/libavcodec/timecode.h b/libavcodec/timecode.h
index 50ea313afa..a2b6b0903b 100644
--- a/libavcodec/timecode.h
+++ b/libavcodec/timecode.h
@@ -67,8 +67,8 @@ uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop);
  * @param tc    Timecode struct pointer
  * @param frame Frame id (timecode frame is computed with tc->start+frame)
  * @return a pointer to the buf parameter
- * @note  buf must have enough space to store the timecode representation
- *        (sizeof("hh:mm:ss.ff"))
+ * @note  buf must have enough space to store the timecode representation: 16
+ *        bytes is the minimum required size.
  */
 char *avpriv_timecode_to_string(char *buf, const struct ff_timecode *tc, unsigned frame);