Gilderfluke&Co Video Chameleon - Manual (Page 10)

10
MPEG Content Creation
The Video Chameleon Interactive MPEG Player requires the use of an
authoring tool to prepare and program the MPEG data. We offer an easy
and powerful tool called MPEG Author for this purpose. It is available
individually or as part of the Developer’s Kit. We also offer a video tuto-
rial on the features and operation of the MPEG Author software to help
you get started. See our website www.videochameleon.com for more
information, or contact your reseller. Customers wishing to contract for
MPEG programming – or more complete services such as video content
creation or MPEG encoding – should check our website or with your re-
seller for authorized Video Chameleon developers.
MPEG Details:
Specifically, the Video Chameleon player will accept MPEG 1 or MPEG
2 motion video, MPEG still images, and MPEG audio.
MPEG 1 Mode: 1.15-3 Mbit/sec data rate MPEG 1 video (decoded to
352x240 NTSC or 352x288 PAL non-interlaced, ie 30 fps NTSC or 25
fps PAL) Simultaneous 192-220 kbit/sec MPEG 1 Layer 2 stereo audio.
MPEG 2 Mode: 2-8 Mbit/sec data rate MPEG 2 video (decoded to
720/704x480 NTSC or 720/704x576 PAL interlaced, for total frame rate
of 30fps NTSC (60 fields, 30 frames/sec) and 25 fps PAL. Simultaneous
192-220 kbit/sec MPEG 1 Layer 2 stereo audio. For a conservative
approach when using audio, limit MPEG video rate to ~4 Mbit/sec.
However, with the use of high speed CompactFlash cards, video rates of
up to 8 Mbit/sec can be maintained, even with audio. A good quality
lower bitrate alternate MPEG 2 format is Super Video CD (SVCD),
480x480 NTSC or 480x576 PAL at ~2.5 Mbit/sec.
Still Images: 704x480 (NTSC) or 704x576 (PAL) MPEG 1 stills.
Data Format:
Motion MPEG: MPEG encoding must occur prior to bringing the data
into the MPEG Author program.
Multiplexing: The Video Chameleon requires MPEG video and audio
data to be in the form of separate elementary streams, i.e. not multi-
plexed. The MPEG Author CD contains a de-multiplexing utility which
is useful if MPEG1 data is already multiplexed. For a powerful utility
including MPEG 2 functionality, see tmpgenc.com. We are not affiliated
with and cannot support TMPGEnc, but we find it a useful product.
Still Images: The MPEG Author program can accept still image files in .
BMP, .JPG, .PCT, .TGA, and .PCD file formats. It will automatically
produce the required MPEG still files.