9.0

Table Of Contents
Video
Playing Back Video
626
All devices in your system that are capable of playing back video are listed. The
Onscreen Window device serves for playing back the video file on your computer
monitor.
3. From the pop-up menu in the Format column, select an output format.
For the Onscreen Window output, only a “fixed” format is available. For the other
output devices, you can select different output formats for playback depending on the
device.
4. Adjust the Offset setting to compensate for processing delays.
Due to delays while processing video, the video image may not match with the audio in
Cubase. By using the Offset parameter, you can compensate for this effect. The Offset
value indicates how many milliseconds the video will be delivered earlier in order to
compensate for the processing time of the video material. Each hardware setup can
have different processing delays, so you must try out different values to determine
which value is appropriate.
NOTE
The Offset value can be set individually for each output device. It is saved globally
for each output device and is independent of the project.
The offset is only used during playback. It is defeated in stop and scrub mode so
that you always see the correct video frame.
AFTER COMPLETING THIS TASK
If the quality of the video image is not a critical factor or if you are experiencing performance
problems, try lowering the value on the Video Quality pop-up menu. Although higher quality
settings make the video display sharper and smoother, they also lead to an increased
processor load.
RELATED LINKS
Video Output Devices on page 621
Improving Video Performance for Single-Threaded Codecs
Sometimes, video problems, such as stutters during playback, are caused by codecs that do
not support multi-threading. This can be the case for video files that use single-threaded
decoding, such as Motion-JPEG, Photo-JPEG, and DV codecs. These types of video files are
typically created when capturing video with Decklink cards by Blackmagic Design or cards by
AJA.
To compensate for this, you can activate the “Boost Video (Reduces Audio Performance)”
option on the Video Player page in the Device Setup dialog. This excludes one of the available
CPU cores from audio processing and reserves it for video tasks like decoding and playback.
However, this may reduce the audio performance.
NOTE
For this option to have an effect, you must also activate the Multi Processing option in the
Device Setup dialog (VST Audio System page).