#define VSYNC_PASSTHROUGH 0
#define VSYNC_CFR 1
#define VSYNC_VFR 2
+#define VSYNC_VSCFR 0xfe
#define VSYNC_DROP 0xff
#define MAX_STREAMS 1024 /* arbitrary sanity check value */
int eof_reached; /* true if eof reached */
int eagain; /* true if last read attempt returned EAGAIN */
int ist_index; /* index of first stream in input_streams */
+ int64_t input_ts_offset;
int64_t ts_offset;
int64_t last_ts;
int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */