Matrox VS4 - H.264 Video Capture

42
Chapter 4, Using the VS4Recorder Pro Application
• MPEG-2 I-frame (AVI) Creates an MPEG-2 I-frame .avi file with
embedded stereo PCM audio. If this option is selected, specify the
Data
Rate (in Mb/s) at which the MPEG-2 I-frame codec will record your source
video:
$ You can set the data rate to any value between 10 Mb/s and 50 Mb/s.
$ Click to set the Data Rate to the default SD value.
¦NoteMPEG-2 I-frame .avi files are not supported in Avid editing
applications on Windows systems.
•
DV/DVCAM (MOV) Creates a DV/DVCAM .mov file with embedded
stereo or mono PCM audio.
•
DVCPRO (MOV) and DVCPRO50 (MOV) Creates a DVCPRO or
DVCPRO50 .mov file with embedded stereo or mono PCM audio.
¦NoteYou can make SD recordings using the H.264 codec (see “HD settings")
H.264 video capture
The VS4Recorder Pro offers real-time video capture to H.264 using Intel’s Quick
Sync Video (QSV) technology (available with i7 processors).
¦NoteIf QSV technology is not present or not enabled, the H.264 codec will
not be available in the
Settings dialog.
If the on-board Intel GPU is used as the main display and for encoding to H.264,
it can result in dropped frames and/or a sluggish UI, because the same GPU is
being used to perform two intensive tasks (encoding four streams to H.264 and
displaying four live windows). For that reason, it is recommended to use a
separate GPU as the main display for a better experience.
Long captures in H.264
If you choose to capture H.264 (.mp4 or H.264 .mov) files with a set capture
duration of over 480 minutes (8 hours), the .wav audio format will be
automatically selected and file splitting will automatically create a new video file
every 480 minutes. You can choose your own split file interval (starting at 1
minute). This restriction does not exist for .avi or DV and DVCPROHD .mov
files; however, depending on the split value you set, be sure to select the right
settings for the .wav files (see “WAV files” on page 46).
¦NoteStreamable files are created when capturing .mp4 files with either
automatic file splitting or capture duration enabled.
QSV display setup
To setup QSV on a desktop PC with Intel
®
i7 processors, and an additional
NVIDIA or AMD PCIe graphics card installed (without having to connect an
additional monitor), you should: