diff options
| author | Diederick Niehorster <dcnieho@gmail.com> | 2021-12-21 14:53:27 +0100 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-12-24 14:06:06 +0530 |
| commit | 7dc33aad45772ca3c0a3092833cf8447d1607663 (patch) | |
| tree | 2d90d4a5c0fe2c6a284dd57f9bc1fcd4d4714ae0 /libavdevice/dshow.c | |
| parent | 7b21841ce45ef4ab486c3c94a714345b878a70fd (diff) | |
avdevice/dshow: implement option to use device video timestamps
The dshow avdevice ignores timestamps for video frames provided by the
DirectShow device, instead using wallclock time, apparently because the
implementer of this code had a device that provided unreliable
timestamps. Me (and others) would like to use the device's timestamps.
The new use_video_device_timestamps option for dshow device enables them
to do so. Since the majority of video devices out there probably provide
fine timestamps, this patch sets the default to using the device
timestamps, which means best fidelity timestamps are used by default.
Using the new option, the user can switch this off and revert to the old
behavior, so a fall back remains available in case the device provides
broken timestamps.
add use_video_device_timestamps to docs.
Closes: #8620
Signed-off-by: Diederick Niehorster <dcnieho@gmail.com>
Reviewed-by: Roger Pack <rogerdpack2@gmail.com>
Diffstat (limited to 'libavdevice/dshow.c')
| -rw-r--r-- | libavdevice/dshow.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c index cc0bef0474..5e6eb9c85d 100644 --- a/libavdevice/dshow.c +++ b/libavdevice/dshow.c @@ -1310,6 +1310,7 @@ static const AVOption options[] = { { "audio_device_save", "save audio capture filter device (and properties) to file", OFFSET(audio_filter_save_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, { "video_device_load", "load video capture filter device (and properties) from file", OFFSET(video_filter_load_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, { "video_device_save", "save video capture filter device (and properties) to file", OFFSET(video_filter_save_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "use_video_device_timestamps", "use device instead of wallclock timestamps for video frames", OFFSET(use_video_device_timestamps), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC }, { NULL }, }; |