dmrecord(1) dmrecord(1)
dmrecord - digital media hard-disk recording utility
dmrecord [options] [-p video_port|screen_port] [-p audio_port ]
[-s | -a] [-2] [-f file_options] filename
dmrecord records a movie file which contains a JPEG-compressed video
track and, optionally, an audio track.
dmrecord supports realtime video recording to disk through Impact
Compression, Octane Compression, ev1 video and Cosmo Compress. (Indy
Video, Indigo2 Video, and Galileo Video are ev1 = 'Express Video'
devices.) On O2 systems, dmrecord uses the built-in MVP ports and ICE
compressor. The recorded movie file contains JPEG-compressed image data.
Audio is recorded as stereo or mono 16-bit data, using the current audio
input source and input sampling rate settings on the system Audio Control
Panel, apanel(1).
The O2 version of dmrecord produces movies in QuickTime format, though it
can be instructed to use the old SGI format. Other versions may use only
the SGI format. The O2 version of dmplay(1) can handle movies in either
format; other versions may only be able to handle SGI format.
-h help flag
dmrecord prints out a detailed description of command line options
and usage examples. It is tailored to show only what are actually
available on your system for parameters that are system-dependent,
such as the compression engine and the input video port names, etc.
-v verbose flag
-B [auto | key] (key is default)
Begin recording whenever ready, or wait until user starts recording
session by pressing the <Enter> key.
-t seconds
Specify number of seconds using a nonnegative floating-point value.
If seconds is not specified, record until user terminates recording
by sending SIGINT (<Ctrl C>) to the process.
-C critical flag
Immediately abort recording and remove output file if a video frame
is dropped. By default, dmrecord will continue recording. After
recording is terminated, the program will post process the output
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dmrecord(1) dmrecord(1)
file and replace each dropped frame by a synthesized frame. Each of
the two fields in the synthesized frame is a duplicate of the second
field from the last valid frame preceding the dropped frame.
-p video[,device=D][,port=N][,comp=jpeg][,engine=E][,quality=Q]
[,brate=bits-per-sec]
Specify video port. For O2 syetms, the input device must be mvp and
the compression engine must be ice. For Impact or Octane
Compression, the device must be impact and the compression engine
must be impact. For other systems, the device must be ev1 and the
compression engine must be cosmo. Use the -h option to find out the
input ports available on your system.
Optionally, a JPEG quality factor Q from 1..100 may be specified as
quality=Q, or a bitrate target describing bits per second may be
specified as brate=bits-per-sec.
If the Galileo 601 option is installed, use port=0 to select the
analog port, port=1 for the port labeled IN 1 of the 601 breakout
box. Port IN 2 of the 601 breakout box is not supported.
If neither video_port nor screen_port is specified, dmrecord takes
its video from current video input as set by videopanel(1).
-p screen,x=X,y=Y,width=W,height=H,timing=T
For O2 systems only. Specify screen port. The rectangular area of
the screen with (X,Y) as its upper left-hand corner and with width W
and height H is used as the video input for the movie. The timing
must be either ntsc or pal. You must use xsetmon(1) to set the
monitor's timing to 60 Hz for ntsc or 50 Hz for pal before you use
dmrecord with screen capture. (xsetmon is available on the desktop
from the System/GraphicsBackEnd menu choice.)
-p audio[,channels=C]
Enable audio port. Format is always 16-bit. channels=2 specifies
stereo (the default), channels=1 specifies mono.
-s SGI flag
For O2 systems only. This flag forces the O2 version of dmrecord to
produce a movie using the old SGI format. Without this flag, a
QuickTime movie is produced, which is not playable using versions of
dmplay(1) that only handles the old SGI format. O2 version of dmplay
can play movies in either format.
-a AVI flag
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dmrecord(1) dmrecord(1)
For O2 systems only. This flag forces the O2 version of dmrecord to
produce a movie using the AVI format.
-2 F2 domianant
For O2 systems only. Specify this flag if the input video stream is
F2 dominant. F1 dominance is assumed without this flag.
-f [title=TITLE]
title sets the movie file title to the string TITLE.
Record 30 seconds of interleaved stereo audio and JPEG video data to an
SGI movie file:
dmrecord -t 30 -p video -p audio file.mv
Use dmrecord -h to see other examples.
dmplay(1), videopanel(1), apanel(1)
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