change dynamically at runtime. */
typedef struct AVChapter {
+#if FF_API_CHAPTER_ID_INT
int id; ///< unique ID to identify the chapter
+#else
+ int64_t id; ///< unique ID to identify the chapter
+#endif
AVRational time_base; ///< time base in which the start/end timestamps are specified
int64_t start, end; ///< chapter start/end time in time_base units
AVDictionary *metadata;