Vestax PBS-4 web broadcast mixer

Live streams are still difficult to implement into events. That they can make a difference you might know since the Boiler Rooom events or the Google Hangout hype. Most amateurs are still doing their personal web broadcasts with Ustream/Justin.tv/Livestream and a webcam built into their computers. Some time ago we also tried to stream visuals with a video grabber or from resolume via screen recorder to skype, but this was awefully lagging.

Now Vestax sells their new Vestax PBS-4 web broadcast „mixer“, which in fact is a switcher because lacking a time base code synchronizer to synchronizes the frame speeds of the different sources (video noise/glitches when switching channels!).
The PBS-4 is 8 inch in size, capable to grab and mix switch together four sources of HDMI, VGA and/or Composite-Video signals plus RCA/XLR-audio input. The USB output then feeds the mixed audio and video to a computer and streams the content to any live streaming online service with a standard resolution of 720×576 (PAL) or 720×480 (NTSC). So a HDMI signal will be downscaled to SD resolution. Though not capable of streaming out HighDefinition it might be enough for a good stream onto almost any streaming platform. Additionally you can find Composite jacks to stream out a master and preview video signal and it has a control room audio out.
The look of this tiny device reminds of the good old Hama Video switchers (why didnt they develop something similar, but a dj-mixer company?!) and seems to be an easy to use all-in-one solution to broadcast live audio and live video sources on the internet. The Vestax PBS-4 costs something like 450€, technical specifications and a link to the product page below the images.

vestax-pbs-4-diagram

vestax-pbs-4

AUDIO SPECIFICATIONS

INPUT
x3 LINE IN Stereo RCA
x2 Neutrik Combo Jack (Mono)
x1 HDMI IN
x1 USB IN (Loop Back)

OUTPUT
x1 Master Output Stereo RCA (Control Room)
x1 1/4″ Headphone Jack

VIDEO SPECIFICATIONS

INPUT
x4 VIDEO IN (Composite RCA)
x1 VGA IN(D-SUB15 pin)
x1 HDMI IN

OUTPUT
x2 MASTER OUT (Composite / USB)
x1 PREVIEW OUT(Composite)

VIDEO RESOLUTION
Composite: NTSC / PAL
VGA IN (NTSC) : 1024×768 (60Hz)
VGA IN (PAL) : 1024×768 (50Hz)
HDMI IN (NTSC): 720×480 (60Hz) *480p
HDMI IN (PAL) : 720×576(50Hz)*576p

SAMPLING RATE
4:2:2 (Y:R-Y:B-Y), 8-bit, 13.5 MHz (ITU-R BT.656)

INPUT/OUTPUT LEVEL
Composite: 1.0 Vp-p
Impedance: 75 ohms

USB
Class: 2.0
Video Output Resolution: 720×480 (NTSC), 720×576 (PAL)
Audio ADC: 16bit/48kHz

Power Supply DC-6V 3A (Vestax SDC-6)
Power Consumption 7W (AC100V – 230V)
Dimention 210(W) x 147(D) x 45(H)mm (excluding knobs)
210(W) x 147(D) x 54(H)mm (including knobs)
Weight 950g

http://www.vestax.com/v/products/detail.php?cate_id=195



2 Comments

  1. lumen wrote:

    is it possible to stream the output to VJ software such as VDMX?

    • yochee wrote:

      Well, the stream goes to USB and then to your computer, i guess it is possible to grab that stream just like a normal webcam. Or you could grab the composite stream with a video grabber / capture card.

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