MPEGTool is an application which combines MPEGTool encoder and
MPEGTool statistics with X11/Motif based Graphical User Interface
(GUI). MPEGTool encoder is an MPEG-1 encoder for RGB and CCIR-601
format input video sequences. MPEGTool statistics is a graphical
statistics tool which can be used to analyze the statistical pro-
perties of the encoding process. MPEGTool allows a user to speci-
fy several of the MPEG parameters such as the intraframe to in-
terframe ratio, and the quantizer scale through its GUI.
MPEGTool has been tested on Sun SparcStation and HP9000 current-
ly. To compile under these machines, see instructions in
GUI of MPEGTool is based on Motif toolkit from the Open Software
Foundation (OSF), so Motif (Xm) libraries as well as X Toolkit
(Xt) libraries and Xlib are required to compile MPEGTool.
Although MPEGTool can be executed under several window managers,
Motif window manager (mwm) is recommended. We've tested mwm, Open
look window manager (olwm), Tab window manager (twm). With the
twm, we recommend to put 'DecorateTransients' in your .twmrc
MPEGTool supports disk and tape device for video data input and
MPEG code output. Also, MPEGTool creates statistics data on the
disk. Statistics data requires around 1/350 to 1/250 of video
data size and MPEG code requires 1/10 to 1/5 depending on the
MPEGTool encoder encodes RGB/CCIR-601 format video input data
from tape or disk device by MPEG-1 specification and write the
encoded data into tape or disk. In addition, the statistics data
can be stored into disk device for MPEGTool statistics analysis.
We can set several encoding parameters from MPEGTool Encoder win-
dow. For setting device related parameters, click Configure but-
ton and modifying parameters in MPEGTool Encoder Configuration
window. To start Encoding, click Start and MPEGTool begins encode
if there is no parameter error or device related error.
MPEGTool statistics creates types of graphs to analyze statisti-
cal properties of MPEG encoded video stream. Four types of graphs
can be selected, Distribution, Generation Record, Autocorrelation
and Interarrival Time. First three of these plot each statistics
of MPEG code in five levels, Bit/Frame, Bit/Slice,
Bit/MacroBlock, ATM/Frame and ATM/Slice. Interarrival Time plots
the time elapsed between arrivals of ATM packets within a frame.
The interarrival times are calculated from the bits generated per
macroblock within a frame. This interarrival time is normalized
to units of X seconds (where X will depend on the hardware imple-
mentation of the coder).
"MPEGTool: An X windows based MPEG encoder and statistics
tool", Proceedings of ACM Multimedia '93, Anaheim, CA
This paper contains more details and several examples about
MPEGTool. PostScript file of this paper is placed on anonymous
ftp on atum.ee.upenn.edu.