Roland V4EX 4 Channel Video mixer

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Main Features
  • PGM Output (Up to 1080p HDMI + RGB/Component + Composite) + PVW Output (PVW/Multiviewer)
  • Built-in multiviewer with touch control
  • Scalers on CH 4 and Output
  • HDCP compliant
  • Audio Mixer & Delay -up to 4 frames
  • 3 Input (HDMI/Composite) + 1 Input (Up to 1080p HDMI/RGB/Component/Composite)
  • 480p/576p Progressive internal processing
  • Built-in frame synchronizers on all inputs
  • 259 Transitions 148 Effects
  • Audio Embedding
  • USB Streaming Out for webstreaming

The Roland V-4EX Four Channel Digital Video Mixer with Effects is a live production switcher and web streaming device that improves on the Roland V-4 Video Mixer by adding a built-in multiviewer with touch control screen and HDMI in/out, with 1080p/RGB WUXGA (1920 x 1200) support on one input, and 1080p output. You can switch between four video sources and deliver via HDMI, RGB Component, composite video and stream via the built-in USB port. Four built-in frame synchronizers, one per input, allow you to support and cleanly switch input video from sources that are not gen-locked. This unit is well-suited for clubs, concerts, worship, events, weddings, education and sporting events.

The V-4EX features a built in Keyer for Luma, Chroma and PIP keying effects, including the 259 transition and 148 built-in effects. The switcher features a familiar analog T-bar transition controller with a choice of three transition curves and the T-bar itself can be rotated for user comfort without affecting its operation. The built-in audio mixer accepts audio embedded in the HDMI stream, or from an unbalanced analog source via the two RCA jacks, and embeds the mixed audio in the HDMI output stream. You can also delay the audio by up to 4 frames to adjust the "lip sync" of your video.

The built in multiview screen can show your four inputs on the screen at the same time and you can transition from one camera to the next by merely touching the camera view on the monitor screen. The V-4EX features an an output scaler that can scale your video to 1080p or 1920 x 1200 via the HDMI/RGB output. The program feed is available for streaming or capturing to a computer via the USB Type B port on the unit.

Video Input/Output
Inputs 1 to 3 feature composite (BNC) or HDMI while input four accepts HDMI, RGB/Component or S-video. Input 4 can accept 1080p input signals via the HDMI connector. Program output is available via the composite (BNC), HDMI or RGB/Component 15 -pin connector. HDMI output is scaled up to 1080p, and 1920 x 1200 is available through the 15-pin connector. Additionally you can stream the program output for the web through the USB port.

High Quality Digital Signal Processing
The V-4EX processes input video signals at SD resolution using 8-bit progressive internal processing with a color sampling rate of 4:2:2 (Y/Pb/Pr). The mixer also features audio resolution of 24-bit/48 KHz.

Frame Synchronized Inputs
Featuring one frame synchronizer per input, the V-4EX allows you to input video from non gen-locked sources and still seamlessly switch between them.

Digital Effects
The V-4EX features a selection of 148 digital effects including colorize, strobe, mirror, multi-screen, negative, shake, afterimage and silhouette. It also features composition effects such as picture-in-picture, chroma key, and luminance key. A single button press can recall the effects, and you can modify select effects using the panel mounted control dial.

259 transitions (wipes) are available to you to switch video from input A to input B.

The built-in multiviewer can display all active inputs on the same screen on the V-4EX. You can select input sources by simply touching the image you want to select on the built-in screen.

Memory Function
The built-in memory function allows the memorization and convenient recall of panel settings, such as effect assignment to each button. The memory stores up to seven configurations and keeps stored settings even with the power off.

Preview Function and On-Screen Menu
The preview function allows monitoring of each of the four input sources or the output source, or the output can be overlaid on top of the four input sources on the built-in multiview monitor. Major functions can be viewed on preview screen using the convenient on-screen menu.

Synchronization with MIDI Equipment
The V-4EX supports remote control by MIDI or USB, and can be operated remotely from an external device that supports MIDI Visual Control.

Auto Switching to Musical Rhythm
Use this feature when you want to perform switching on the rhythm of background music. By default, switching is performed at 120 BPM (beats per minute).

The V-4EX is HDCP compliant, although you have to enable HDCP using the menu system.


Video Processing
4:2:2 (Y/Pb/Pr), 8 bits (Internal Processing : 480/59.94p when set to NTSC, 576/50p when set to PAL)
Audio Processing
Sampling Rate : 24 bits/48 kHz, 2 ch

Input Formats

HDMI Video (INPUT 1 -- 3)
480/59.94p (when set to NTSC), 576/50p (when set to PAL)
HDMI and Component Video (INPUT 4)
480/59.94i, 480/59.94p, 720/59.94p, 1080/59.94i, 1080/59.94p (when set to NTSC), 576/50i, 576/50p, 720/50p, 1080/50i, 1080/50p (when set to PAL)
HDMI Audio (INPUT 1 -- 4)
Linear PCM, 24 bits/48 kHz, 2 ch
640 x 480/60Hz, 800 x 600/60Hz, 1024 x 768/60Hz, 1280 x 768/60Hz, 1280 x 1024/60Hz, 1366 x 768/60Hz, 1400 x 1050/60Hz, 1600 x 1200/60Hz, 1920 x 1200/60Hz
* The refresh rate is the maximum value of each resolution.
* Conforms to VESA DMT Version 1.0 Revision 11.
* 1920 x 1200/60Hz : Reduced blanking
Composite Video (INPUT 1 -- 4)
S-Video (INPUT 4)

Output Formats

HDMI and RGB/Component Video (OUTPUT)
480/59.94i, 576/50i, 480/59.94p, 576/50p, 720/59.94p, 720/50p, 1080/59.94i, 1080/50i, 1080/59.94p, 1080/50p
640 x 480, 800 x 600, 1024 x 768, 1280 x 768, 1280 x 1024, 1366 x 768, 1400 x 1050, 1600 x 1200, 1920 x 1200
* The output format of HDMI and RGB/Component is always the same.
When an interlaced format is selected, component signal is output from the RGB/COMPONENT connector.
When a non-interlaced format is selected, RGB signal is output from the RGB/COMPONENT connector.
* The refresh rates of RGB format is 60 Hz when set to NTSC, 75 Hz when set to PAL (excluding 1600 x 1200 and 1920 x 1200. The refresh rate of these 2 is 75 Hz when set to PAL.)
* RGB formats : Conforms to VESA DMT Version 1.0 Revision 11.
* 1920 x 1200/60Hz : Reduced blanking
Linear PCM, 24 bits/48 kHz, 2 ch
Composite Video
Preview Video (PVW OUT)
480/59.94p when set to NTSC, 576/50p when set to PAL
Preview Audio (PVW OUT)
Linear PCM, 24 bits/48 kHz, 2 ch
USB Video
720 x 480 when set to NTSC, 720 x 576 when set to PAL, Motion JPEG
USB Audio
Linear PCM, 16 bits/48 kHz, 2 ch

Input Connectors

HDMI : Type A (19 pins) x 4 (INPUT 1 -- 4)
RGB/Component : HD DB-15 type x 1(INPUT 4)
Composite : BNC type x 4 (INPUT 1 -- 4)
S-Video : 4-pin mini DIN type x 1 (INPUT 4)
RCA-pin type x 1pair (AUDIO IN)

Output Connectors

Final Output
HDMI : Type A (19 pins) x 1 (OUTPUT)
RGB/Component : HD DB-15 type x 1 (OUTPUT)
Composite : BNC type x 1 (OUTPUT)
Preview Output
HDMI : Type A (19 pins) x 1 (PVW OUT)
Other Connectors
MIDI : 5 pins DIN type x 2 (IN, OUT/THRU)
USB : B type x 1 (for streaming and remote control)

Signal Level Impedance

Signal Level : 1.0 Vp-p (luminance), 0.7 Vp-p (chroma)
Impedance : 75 ohms
Signal Level : 1.0 Vp-p
Impedance : 75 ohms
Signal Level : 1.0 Vp-p
Impedance : 75 ohms
Analog Audio
Nominal Input Level : - 10 dBu
Maximum Input Level : + 8 dBu
Impedance : 15 k ohms


Graphic Color LCD, 320 x 240 dots, touch panel
Video Effects
Transition : Mix, Cut, Wipe (259 patterns)
Composition/Filter : Picture in Picture, Luminance Key, Chroma Key, Strobe, Negative, Colorize, Feedback, Emboss, Multi, Mirror etc. (148 types)
Others : Output Fade, Freeze
Power Supply
AC adaptor
Current Draw
2.0 A

Size and Weight

Width (W)
225 mm8-7/8 inches
Depth (D)
296 mm11-11/16 inches
Height (H)
105 mm4-3/16 inches
2.6 kg5 lbs. 12 oz.

All specifications and appearances are subject to change.


by PowerReviews
Roland V4EX 4 Channel Video mixer

(based on 1 review)

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Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Video Guys produce Gold!

By Porty

from Perth Australia

Verified Buyer


  • price
  • Size
  • Usefulness


    Best Uses

      Comments about Roland V4EX 4 Channel Video mixer:

      great product that suits all my production needs

      • Was this a gift?:
      • No

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      Get your Product questions answered by real customers and our in-house experts with the Videoguys AnswerBox!

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      4 Questions | 4 Answers
      Displaying questions 1-4
      • Q:

        Can I know warranty period for this Mixer?
        Asked on 30/6/2013 by Jae

        1 answer

        • Staff Reviewer


          1 year

          Answered on 2/7/2013 by Michael from Videoguys
      • Q:

        Can I use this mixer as live switcher in the Church?
        Asked on 10/6/2013 by Jae from Victoria

        1 answer

        • Staff Reviewer


          yes it can..

          Answered on 10/6/2013 by Michael from Videoguys
      • Q:

        In short, could you please just underline major differences between Roland V4EX and Edirol Roland VR-5?
        Asked on 14/5/2013 by Miles from Beverly Hills NSW, Australia

        1 answer

        • Staff Reviewer


          Main difference are: VR5 has 2 Mono and 5 Stereo Mixable Audio Channels and MPEG-4 player/recorder. & Twin screen with main and preview out. V4EX No audio mixing, 1 touch screen, no playback or recorder, HDMI and composite

          Answered on 16/5/2013 by Michael from Videoguys
      • Q:

        I noticed this new dream mixer says it downscales HDMI (HD) input to a PAL signal. I guess you haven't had a chance to see them yet but how is the performance? Will it be pretty close to HD quality as it is transcoding from HD and outputting with HDMI?


        Sam James
        Asked on 18/3/2013 by Sam

        1 answer

        • Staff Reviewer


          we haven't seen this mixer as yet.. But please remember this is still working in SD, and not a HD mixer as such, all its doing is up resing the signal, but really only working in 576/50p when set to PAL.. so i guess the quality will be good, but not true HD.. ie all the way through...

          Answered on 18/3/2013 by Michael from Videoguys
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      Do you have a question about this product? 

      UPC: 761294503201
      Roland V4EX 4 Channel Video mixer
      • AC Adaptor
      • Power Cord
      • RCA - BNC conversion plug x 2
      • Owner's Manual

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      What's in the box
      Roland V4EX 4 Channel Video mixer
      • AC Adaptor
      • Power Cord
      • RCA - BNC conversion plug x 2
      • Owner's Manual
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      Address: Unit 12, 25 Howleys Road, Notting Hill Vic 3168
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