@option{timestamp_align} seconds.
Defaults to @samp{0}.
+@item wait_for_tc (@emph{bool})
+Drop frames till a frame with timecode is received. Sometimes serial timecode
+isn't received with the first input frame. If that happens, the stored stream
+timecode will be inaccurate. If this option is set to @option{true}, input frames
+are dropped till a frame with timecode is received.
+Option @var{timecode_format} must be specified.
+Defaults to @option{false}.
+
@end table
@subsection Examples
int channels;
int audio_depth;
+ unsigned long tc_seen; // used with option wait_for_tc
};
typedef enum { DIRECTION_IN, DIRECTION_OUT} decklink_direction_t;
int copyts;
int64_t timestamp_align;
int timing_offset;
+ int wait_for_tc;
};
#endif /* AVDEVICE_DECKLINK_COMMON_C_H */
if (packed_metadata) {
if (av_packet_add_side_data(&pkt, AV_PKT_DATA_STRINGS_METADATA, packed_metadata, metadata_len) < 0)
av_freep(&packed_metadata);
+ else if (!ctx->tc_seen)
+ ctx->tc_seen = ctx->frameCount;
}
}
}
}
}
+ if (ctx->tc_format && cctx->wait_for_tc && !ctx->tc_seen) {
+
+ av_log(avctx, AV_LOG_WARNING, "No TC detected yet. wait_for_tc set. Dropping. \n");
+ av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - "
+ "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);
+ return S_OK;
+ }
+
pkt.pts = get_pkt_pts(videoFrame, audioFrame, wallclock, abs_wallclock, ctx->video_pts_source, ctx->video_st->time_base, &initial_video_pts, cctx->copyts);
pkt.dts = pkt.pts;
{ "audio_depth", "audio bitdepth (16 or 32)", OFFSET(audio_depth), AV_OPT_TYPE_INT, { .i64 = 16}, 16, 32, DEC },
{ "decklink_copyts", "copy timestamps, do not remove the initial offset", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
{ "timestamp_align", "capture start time alignment (in seconds)", OFFSET(timestamp_align), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, DEC },
+ { "wait_for_tc", "drop frames till a frame with timecode is received. TC format must be set", OFFSET(wait_for_tc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
{ NULL },
};
#define LIBAVDEVICE_VERSION_MAJOR 58
#define LIBAVDEVICE_VERSION_MINOR 9
-#define LIBAVDEVICE_VERSION_MICRO 100
+#define LIBAVDEVICE_VERSION_MICRO 101
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \
LIBAVDEVICE_VERSION_MINOR, \