JVC VN-E4 manual  5-3 Encoding, Encode Number, Quality, Frame Rate, Interpolate

Page 24

Settings (continued)

5-3 Encoding Page

This page is for setting JPEG encoding parameters.

A BC D

This page can be used upon access via AadminB or AoperatorB. Press the AOKB button to enable the new settings upon changing. If the AOKB button is pressed upon entering an invalid value, a warning message will appear and entry will be denied. Press the ACancelB button to restore the invalid entry to the current value.

A

Encode Number

 

Up to 8 types of encoding are possible using different combinations of the input channel and

 

 

 

frame size. Turn on the check box for items to be used. Deselect unnecessary items to enable

 

 

 

effective allocation of the processing capacity of VN-E4.

 

 

 

 

 

 

 

 

 

B

Quality

 

For specifying the rate control mode and target file size.

 

 

 

 

 

When A1-high-Bto A7-high-Bis selected, the quantization table of JPEG encoding is fixed and the

 

 

 

file size will increase/decrease according to the input signals. Default value of each option is

 

 

 

displayed in the target file size. Be careful when recording JPEG data to a recorder with limited

 

 

 

recording capacity, as file sizes may increase or decrease, so the maximum recording time may

 

 

 

be changed (When AAverage File SizeB or AConstant File SizeB is selected, input of target file size

 

 

 

will be enabled.)

 

 

 

 

 

 

WhenAAverage File SizeB is selected, encoding is performed such that average file size of

 

 

 

multiple JPEG images becomes the target file size.

 

 

 

 

 

WhenAConstant File SizeB is selected, encoding is performed such that each JPEG file size

 

 

 

becomes the target file size. When AConstant File SizeB is selected, the processing load of

 

 

 

VN-E4is heavy and the maximum frame rate becomes a quarter of the maximum frame rate in

 

 

 

other rate control modes

 

 

 

 

 

 

 

 

 

 

C

Frame Rate

 

For specifying the number of frames to encode per second. VN-E4is limited in its processing

 

 

 

capacity and the specified frame rate may not be realized depending on the settings of

 

 

 

AEncode NumberB and AQualityB.

 

 

 

 

 

In particular, when AConstant File SizeB is selected or when the target file size is set to a large

 

 

 

value, the upper limit of AFrame RateB will be lowered.

 

 

 

 

 

An example of settings for which 120 fps (VN-E4U)or 100 fps (VN-E4E)can be realized is as

 

 

 

follows.

 

 

 

 

 

 

 

 

Encoding

: 4 VGA set to ON

 

 

 

 

 

Quality

: AAverage File SizeB selected and set to A24KBB

 

 

 

Frame Rate

: A30B(VN-E4U),A25B(VN-E4E)

 

 

 

 

 

The unit will function as follows if the frame rate is altered when data distribution is in progress.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When frame rate is increased

When frame rate is decreased

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frame rate of the distribution remains

Frame rate of the distribution

 

 

 

 

Distribution via TCP

 

unchanged.

decreases accordingly with the new

 

 

 

 

 

 

 

 

settings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frame rate of the distribution

Frame rate of the distribution

 

 

 

 

Distribution via Multicast

 

increases accordingly with the new

decreases accordingly with the new

 

 

 

 

 

 

 

settings.

settings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

Interpolate

 

When AInterpolateB is off, video frame with 480 horizontal lines is encoded to JPEG. When

 

 

 

AInterpolateB is on, video field with 240 horizontal lines is interpoleted to 480 horizontal lines, and

 

 

 

encoded to JPEG. To get high resolution, AOffB is recommended. To avoid jaggy image caused

 

 

 

by fast moving objects, AOnB is recommended.

 

 

 

 

 

 

 

 

 

 

 

24

Page 23 Page 25
Image 24
Page 23 Page 25
Contents VN-E4 This manual describes the detailed usage of VN-E4Important Safeguards For Your Safety Please Read the Following Text Carefully For Continental EUROPE, ETC For U.K. onlyInformation for Users on Disposal of Old Equipment  How to view this manual  Copyrights in this manual Features Copyrights in this manual Features Alarm InputNetwork Input Cautionary Notes  Name and Function of Parts PRS-232C/RS-485COM1, 2 Protocol Selection Switch RCONTROL/SERVICE switchSalarm Output terminal Talarm Input terminalSystem Setup Examples  1-1 Remote monitoring using the built-in viewerNetwork  1-2 Systems that combine other manufacturer’s devices Video Input 1~4Server Requirements for network using VN-E4  2-1 Network BandwidthInput CH Frame Size Picture Quality Control Method VGA File Size Qvga File Size 2-2 Network Delay  2-3 Network Jitter 2-4 Packet Loss  2-5 Use of MulticastIP Address Setting  3-1 VN-E4with Factory Default Settings 3-3 When IP address of VN-E4is unknown  3-2 VN-E4for which IP address is knownConnection / Installation  4-1 AC Adaptor 4-2 Network  4-4 Alarm Input  4-5 Alarm Output 4-3 COM1,2 Serial Port Terminals Receiving End 4-6 AV Devices  4-7 Attaching Rack Mount Brackets 4-8 Connection with PC Case of 1 unit. VN-BK10rack mount bracketSetting Using Internet Explorer Setting Up of PC for SettingEnter user name and password User Name Default Password DescriptionSettings Admin Operator User 5-1 Jpeg View Page Top Reload Button Viewer... Button 5-2 Input  5-3 Encoding Encode NumberQuality Frame Rate 5-4 Alarm Action1st Trigger Max. Interval 5-5 Alarm Environment MailFTP Motion Detect Setting Chattering Guard TimeOutput Duration Manual OutputOperator Password CH1-CH4ButtonDisplay Screen Detection 5-6 Serial  5-7 Basic  5-8 Details MTU 5-9 Streaming  5-10 Access Restrictions Client AddressAudio Sender  5-11 Time NTP 5-12 Password Current PasswordNew Password Username 5-13 Maintenance SettingsAll Settings UpdateFactory Settings of Input Factory SettingsFactory Settings of Encoding Factory Settings of AlarmFactory Settings of Alarm Environment Factory Settings of Motion DetectionFactory Settings of Serial Factory Settings of Basic Factory Settings of Details1420 Negotiation Auto PPPoE Off Username Blank Password Factory Settings of StreamingFactory Settings of Access Restrictions Access Restriction Deny IP Address BlankFactory Settings of Time Factory Settings of Password 5-14 Miscellaneous AppearanceFor changing the web page appearance Manual API Guide 5-15 Operation DestinationSystem Log  5-16 Settings Settings This page can be used upon access via AadminB or AoperatorB Using the VN-E4Built-in Viewer  6-1 Screen Configuration of Built-in ViewerPause Button All ButtonOperation  6-2 Built-in Viewer Settings Alarm Event Selection Auto Alarm ClearCancel Button ACH1 RequestB 6-3 GUI for External Device Control Auto PANFocus ZoomW Mode SaveClear MenuSET Digital ZoomSpeed Auto FocusTroubleshooting Specifications OthersInput/Output Compression FormatVN-E4 4ch Network Encoder

VN-E4 specifications

The JVC VN-E4 is a high-performance video camera that has garnered attention for its innovative features and cutting-edge technology. Designed for both amateur enthusiasts and professional videographers, this model showcases JVC's commitment to delivering superior image quality and user-friendly functionality.

One of the standout features of the VN-E4 is its advanced imaging sensor. It utilizes a high-resolution CMOS sensor that captures stunning 4K video footage, providing exceptional clarity and detail. With a wide dynamic range, the camera excels in various lighting conditions, ensuring vibrant colors and deep contrasts. This makes it suitable for diverse shooting environments, from bright outdoor scenes to dimly lit interiors.

The VN-E4 also supports a range of frame rates, including high-speed recording options that enable slow-motion playback. This is particularly valuable for filmmakers looking to add dramatic effects to their projects. With its excellent low-light performance, the VN-E4 allows users to shoot in challenging conditions without sacrificing image quality, making it an ideal choice for events, documentaries, and creative projects.

Equipped with JVC's proprietary image processing technology, the VN-E4 offers enhanced noise reduction and image stabilization. This results in smoother footage, even during handheld shooting or when capturing fast-moving subjects. The optical image stabilization technology is especially useful for reducing the shakiness common in handheld videography.

In terms of connectivity, the VN-E4 is designed with versatility in mind. It includes multiple input/output options, including HDMI and USB ports, allowing for easy integration with external devices. This feature is essential for live streaming and professional broadcasting applications, enabling users to connect to external monitors or recorders seamlessly.

User-friendly controls are another hallmark of the JVC VN-E4. The camera features an intuitive menu system and customizable buttons, allowing for quick access to frequently used settings. The ergonomic design ensures that it is comfortable to hold for extended shooting sessions, making it a practical choice for long projects.

Battery life is another important characteristic of the VN-E4. With energy-efficient technology, the camera can operate for extended periods without frequent recharging, providing peace of mind for videographers on long shoots.

In summary, the JVC VN-E4 stands out for its impressive combination of high-resolution imaging, advanced stabilization, extensive connectivity, and user-friendly design. Whether for creative filmmaking or professional use, this camera provides the tools necessary to capture stunning video with ease and versatility, making it a valuable addition to any videographer's toolkit.
Top Page Image Contents