Blackmagic Design HyperDeck Shuttle HD Installations- Und Bedienungsanleitung Seite 42

Input Re-Sync
This setting will enable a re-sync on the video input and ensure video is locked to the external
reference before recording. The video output will remain locked to reference even when
switched to recording, as the input itself is being resynchronized. This feature is used for ISO
recording where you need multiple decks timecode locked but some sources are non-sync.
This feature is normally turned off so video inputs are recorded without frames being added or
removed from the input video.
All broadcast decks can normally use a reference input to lock the video output during
playback. This means the output of the HyperDeck playback will be locked to the reference
input so it won't need to be resynchronized when connected to a large broadcast system.
However, when the deck goes into record, the output will switch over to the input because
you normally want the input video recorded untouched with the same untouched video sent to
other downstream equipment that's connected to the HyperDeck video outputs.
However, HyperDeck Shuttle 4K Pro has a unique feature that helps with ISO recording. It will
allow you to completely reverse this process and resynchronize the video input to the reference
input. What this means is you can connect a non-sync source to the HyperDeck and it will
retime the video input to the video reference and then record it.
Non-sync sources could be computers, consumer cameras or any video equipment that is
unable to have a reference connected to it. It could even be an incoming video feed from
another studio or external broadcaster. Non-sync sources cause problems with ISO recording,
as you need the timecode on all recordings to match perfectly over time. A non-sync source will
run faster or slower than your other sources and slip out of sync vs the timecode quite quickly
during the recording. This makes multi-cam editing a horrific process as the sources won't have
matching timecode.
With input re-sync turned on, the HyperDeck video input will be analyzed and if it starts falling
behind a frame will be repeated, or if it starts running ahead of the reference, a frame will be
removed. This is called resynchronization and the processing on the input is called a frame re-
sync. It means the timecode in the clips being recorded on all decks will have the same events
happening at the same timecode. It makes multi-cam editing possible.
Of course the downside is you are adding some frames to the input, or removing some frames
from the input before recording. This is why it's best to leave this feature turned off and to
only use it when you absolutely cannot do anything to connect a reference to an ISO source
because it's a computer or consumer device.
However, there is one situation where you can turn the input re-sync feature on and use it.
When input re-sync is turned on, the HyperDeck video output will remain reference locked
even when the deck is recording. What this means is you can connect the SDI output of the
HyperDeck to a camera to lock the camera to the reference via the program return feed. A
good example is the Blackmagic Studio Camera 4K Pro and it can set its reference to the
external video. Then the camera feed will be reference locked from the HyperDeck and the
HyperDeck input re-sync won't have to add or remove frames because the camera is not
running fast or slow.
Settings 42