User Manual-Mac

152
Chapter 10, Using the Matrox MAX H.264 Codec
$ The Restrict to data rate option applies to the video portion of your
encoded file only. When factoring in the encoded audio, the overall data
rate for your encoded file may exceed the specified data rate limit. To
minimize the impact of the audio on the overall data rate, select AAC as
the audio format for your encoded file (see step 13).
7 Under Compressor, set the Quality level for your encoded video. Your
desired quality is delivered on each frame at the lowest data rate possible,
depending on the complexity of the video.
8 Select the entropy coding Algorithm to be used during compression:
$ CABAC Uses the CABAC coding method, and defines the video stream
as H.264 Main profile.
$ CAVLC Uses the CAVLC coding method, and defines the video stream
as H.264 Main profile when
Frame Reordering is selected. Otherwise,
the video stream is defined as H.264 Baseline profile.
¦NoteCAVLC is not supported when encoding to a frame size that has a
width greater than 720. In this case, CABAC will always be used for encoding.
9 If your source video is interlaced and you want to de-interlace your video
before encoding, select
De-interlace video. This option can be used to
display your encoded video on a monitor that displays lines progressively,
such as an LCD or computer monitor. For all other instances, make sure this
option is not selected.
¡ Important If your interlaced video is being scaled, either because you
applied an effect in your project or specified a different compression frame
size, don’t use this option. Instead, use the
Deinterlace Source Video
option in the Export Size Setup window to de-interlace your video. You’ll
be able to do this when specifying the frame size for your encoded video in
step 14.
10 Select the H.264 level that you want to be used to encode your video.
H.264 level
Maximum
Frame size
Maximum
Frame rate
(fps)
Maximum
Data rate
(Mb/s)
2.0 352×288 29.97 2
3.0 720×576 29.97 10
3.1 1280×720 29.97 14
4.0 1920×1080 29.97 20
4.1 1920×1080 29.97 50
4.2 1920×1080 59.94 50