FWCTL(8) | System Manager's Manual | FWCTL(8) |
fwctl
— IEEE1394
control utility
fwctl |
[-prt ] [-b
pri_req] [-c
node] [-d
node] [-g
gap_count] [-l
file] [-M
mode] [-m
EUI64 | hostname]
[-o node]
[-R filename]
[-S filename]
[-s node]
[-u bus_num] |
The fwctl
utility is designed to provide a
way for users to access and control the NetBSD
IEEE1394 subsystem. Without options, fwctl
will
output a list of devices that are/were connected to the bus.
The following options are available:
-b
pri_reqPRIORITY_BUDGET
register on all supported
nodes.-c
node-d
node-f
node-g
gap_count-i
pri_reqPRIORITY_BUDGET
register on all supported
nodes.-l
file-M
mode-R
option. If not
specified, the program will try to guess. In case of “format
0x20” error, try to force the mpeg mode.-m
EUI64 | hostname-o
node-p
-R
filenamesysctl hw.ieee1394if.try_bmr=0 fwctl -r
The resulting file contains raw DV data excluding isochronous
header and CIP header. It can be handled by the
pkgsrc/multimedia/libdv package. The resulting
MPEG TS stream can be played and sent over a network using the VideoLAN
tool (pkgsrc/multimedia/vlc). The stream can be
piped directly to vlc
, see
EXAMPLES.
-r
-S
filename-s
nodeRESET_START
register on the
node.-t
-u
bus_numEach DV frame has a fixed size and it is easy to edit the frame order.
fwctl -R original.dv
Receive a DV stream with DV camera attached.
dd if=original.dv of=first.dv
bs=120000 count=30
Get first 30 frames (NTSC).
dd if=original.dv of=second.dv
bs=120000 skip=30 count=30
Get second 30 frames (NTSC).
cat second.dv first.dv | fwctl -S
/dev/stdin
Swap first and second 30 frames and send them to DV recorder.
For PAL, replace “bs=120000
”
with “bs=144000
”.
fwctl -R file.m2t
Receive an MPEG TS stream from a camera producing MPEG transport stream. This has been tested with SONY HDR-FX1E camera that produces HD MPEG-2 stream at 25 Mbps bandwidth.
To send the stream from the camera over the network using TCP (which surprisingly works better with vlc), you can use
fwctl -R - | nc 192.168.10.11
9000
nc -l -p 9000 | vlc -
To netcast via UDP, you need to use pkgsrc/misc/buffer, since vlc is not fast enough to read UDP packets from buffers and thus it experiences dropouts when run directly. The sending side can use
fwctl -R - | nc 192.168.10.11
9000
nc -l -u -p 9000 | buffer -s 10k -b
1000 -m 20m -p 5 | vlc -
For more information on how to work with
vlc
see its documentation.
mplayer(1), vlc(1), fwip(4), fwohci(4), ieee1394if(4), sbp(4)
The fwctl
command first appeared in
FreeBSD 5.0, as fwcontrol
.
It was added to NetBSD 4.0 under its present
name.
Hidetoshi Shimokawa
<simokawa@FreeBSD.org>
Petr Holub
<hopet@ics.muni.cz>
- MPEG TS mode.
KIYOHARA Takashi
<kiyohara@NetBSD.org>
This utility is still under development and provided for debugging purposes. Especially MPEG TS reception support is very rudimental and supports only high-bandwidth MPEG-2 streams (fn field in CIP header equals 3).
August 24, 2010 | NetBSD 10.99 |