BUGLE-SCREENSHOT(7) Bugle user manual BUGLE-SCREENSHOT(7)NAMEbugle-screenshot - takes screenshots and captures video
SYNOPSIS
filterset screenshot
{
filename "screenshot.ppm"
key_screenshot "C-A-S-S"
}
filterset screenshot C-V inactive
{
video "yes"
filename "video.avi"
codec "mpeg4"
bitrate "1000000"
allframes "no"
}
DESCRIPTION
The screenshot filter-set can be used in one of two modes,
corresponding to the two examples above. In the first, a particular
key-press causes a screenshot to be taken, which is written to file in
ppm(5) format. In the second, a video stream is captured and encoded to
one of a range of formats with ffmpeg(1).
OPTIONS
video
This option controls the mode: either screenshots on request or a
video stream. This filter-set supports activation and deactivation,
so it is possible to record video only on demand.
filename
The file to which the image/video is written. In the case of an
image, if the filename contains a % it is used as a format string
for sprintf(3) with the frame number passed as the parameter.
key_screenshot
The key combination used to capture a screenshot.
codec
The codec to use when capturing a video. Refer to the documentation
for ffmpeg(1) for a list of valid codecs. Some codecs require
special setup and may not work, but common codecs such as mpeg4 and
huffyuv should work.
bitrate
The approximate number of bits per second to use for video
encoding.
allframes
By default, a frame is captured 30 times per second. If this option
is set, every frame is captured. Note that the video file will
still play at 30fps, so the speed will vary unless the application
has been written to use a fixed time-step between frames for its
internal animation (this is a useful way to produce smooth video if
the capturing overhead is otherwise too high).
lag
Sets the latency between frame capture and encoding. If
GL_EXT_pixel_buffer_object is available, setting this option to a
value greater than 1 can help mask readback latency, at the expense
of video memory.
AUTHOR
bugle is written and maintained by Bruce Merry.
SEE ALSObugle(3), ppm(5), ffmpeg(1)BUGLE 0.0.20091026 October 2007 BUGLE-SCREENSHOT(7)
