Introducing Hardware and Software Required for Video Conference Using DV Camera TABARU Masayuki (Kyushu University, Japan)
About Digital Video (DV) format
Introducing software (DVTS , DVcommXP)
Introducing Comet DVIP
About DV format(1/2)
DV (Digital Video) format is high-resolution and high-quality format.
Using IEEE1394 interface and cable can transport high-resolution and high-quality video stream.
High quality video stream But IEEE1394 cable can’t use over than 4.5 meters.
About DV format(2/2) IP (20) UDP (8) RTP DV(80byte) DV(80byte) ・・・ Using the software can be sent anywhere using the Internet The DV data sent over the Internet using RTP payload (RFC3189) . DV/RTP packet format
In the highest quality of communication, the system consumes over 35Mbps as network bandwidth.
Software Introducing (DVTS,3/11) Access http://www.sfc.wide.ad.jp/DVTS and get the DVTS. And install DVTS in your PC, after that created the icon. Click this icon to start DVTS! DVTS is free software.
Software Introducing (DVTS,4/11) Click this icon, the window is up. From now, give a description of each menu and each function.
Software Introducing (DVTS,5/11) Input destination IP address. Send DV stream When you select Start sending menu, setting window is up. If peer use different from default UDP port, you input suited port number. If your PC or peer’s PC can’t process full frame, you set this value to adopt. This value decides to discard level. After set up, click OK bottom to start sending.
Software Introducing (DVTS,6/11) Check the Preview, you can see the your sending stream in your display.
Software Introducing (DVTS,7/11) This buttons control receiving stream.
Because of instability of treatment of control receiving, you may fail to receiving.
Then you check your network state that whether receiving packets or not. If packets are coming, you will try again and again. After that you maybe get stream.
Receive DV stream
Software Introducing (DVTS,8/11) You can use multicast for receiving. Input multicast group address and start receiving If you want to use different from default UDP port, setting this value.
Software Introducing (DVTS,9/11) You can set decode quality to adopt your PC’s performance and network state. If the PC performance is less, you can’t get high quality view smoothly.
Software Introducing (DVTS,10/11) This option is setting view window size on your display.
Software Introducing (DVTS,11/11) If you concern packet loss rate, click this.
Introducing Comet DVIP(2/10) This is the Comet DVIP hardware. This is the intelligence NIC
Introducing Comet DVIP(3/10) IEEE1394 ×2 100Base-TX Comet DVIP’s NIC has two IEEE1394 interfaces. One connects DV camera and another one outputs DV stream. It can select automatically input and output interfaces. This interface is not controlled by OS.
Introducing Comet DVIP(4/10)
Comet DVIP has different property from before introduced two softwares.
Because of intelligence NIC, Comet DVIP doesn’t require high-spec CPU and OS.
It can send and receive one PC equipped intelligence NIC.
The system has dedicated hardware and software.
Introducing Comet DVIP(5/10) This is Comet DVIP software icon. Click this icon. It asks you to be going to load firmware, it takes some time (Y/N). Click “Yes”. Some time later, Comet DVIP control window is up.
Introducing Comet DVIP(6/10) This is Comet DVIP control window. Configurations. Control NIC. Comet DVIP control software works Linux, FreeBSD and Windows Me/2000/XP.
Introducing Comet DVIP(7/10) Select IP version and transmission mode. Input destination IP address (target) and your IP address (self). Because of Comet DVIP network is not controlled by Windows, you need to input your IP address and Gateway.
Introducing Comet DVIP(8/10) ③ ② ① ③ You need to click Initialize bottom and 1394 reset bottom to start sending or receiving DV stream. After that, click send bottom or receive bottom.
Introducing Comet DVIP(9/10)
Comet DVIP output is DV format, you prepare the display equipped DV interface or connect to IEEE1394 “windows” interface.
Most of the monitor has NTSC interface only, then you need to setting DV to NTSC converter.
Introducing Comet DVIP(10/10) You connect Comet DVIP’s IEEE1394 interface and “windows” IEEE1394 interface to see the received DV stream in your display. After connected, you can see the stream on your display using DV capture tool.
Comparison(1/2) Comparison of functions. × ○ - - × ○ × commercial Comet DVIP ○ × The function always display to the front ○ △ (only TTL=1) Multicasting transmission and reception. ○ × RTCP function. ○ × ICMP automatic transmission. ○ ○ Transmitting preview. ○ × It display on a full-screen at the time of reception. (Without Windows frame.) ○ × It is an IEEE1394 output at the time of reception commercial freeware Software licenses. DVcommXP DVTS
Comparison(2/2) Comparison of functions. ○ Auto × Auto ○ × Comet DVIP ○ × The function which fixes the in-every-direction ratio of a window. ○ × Change of packet size. ○ × Selection of reception network interface. ○ × Two or more IEEE1394 apparatus selections. ○ × The packet loss display of the other party by RTCP ○ × Memory of a setup. DVcommXP DVTS
DVcommXP To sale for it outside of Japan needs to reserch violations of intellectual property rights. Fatware, Inc. sales DVcommXP in Japan only because of they don't research that things. If any agency which wants to sale DVcommXP outside of Japan is coming up. And it researches violations of intellectual property rights and the problem will become clear. They will discussion about to sale overseas. DVTS demonstration machine send CPU:AMD AthlonXP 1.2GHZ Memory:256MB receive CPU:Pentium3 Mobile CPU 750MHz Memory:256MB Sending machine can two-way connection. I’ve test before.