Procedure

1. Log in to the IPC using a web browser and choose Settings > Video/Audio/Image > Video Parameters.

   The Video Parameters tab page is displayed, as shown in Figure 1.

   Figure 1 Video Parameters tab page 
   

2. Set video stream parameters. For detailed parameter description, see Table 2.

   Table 2 Video stream parameter description

   Parameter	How to Set
   Stream type	Set the stream type based on the site requirements. The options are as follows: Primary stream: The primary stream is large in size and provides clear video while occupying large bandwidth, so it is used in local storage. Secondary stream: The secondary stream provides smooth video, occupies small bandwidth, and is used for data transmission on low-bandwidth networks. NOTE: SD card recording supports only primary streams.
   Mirror mode	When the mirroring mode is enabled, you can reverse video images. The options are as follows: Close: The mirroring mode is disabled. Horizontal reversion: Video images can be reversed left to right. Vertical reversion: Video images can be reversed upside down. Both: Video images can be reversed upside down and left to right.
   Corridor mode	When the corridor mode is enabled, you can reverse video images by 90 degrees to obtain the aspect ratio 9:16 or 3:4. NOTE: To enable the corridor mode, it is recommended that the box IPC or bullet IPC be rotated for 90 degrees to implement side installation, and the shield of the fixed dome IPC be opened and its lens be rotated for 90 degrees. When two or more of the corridor mode, electronic image stabilization, and defogging mode are enabled, the performance will be affected. The video frame rate may be lowered, resulting in occasional image freezing. You need to set related parameters based on the site requirements.
   Dynamic bit rate	You can set the dynamic bit rate only when you set Coding protocol to H.264 or H.265. After you set the dynamic bit rate, the IPC will automatically use the dynamic bit rate to deliver more clear live video or recordings when an alarm is generated. After that alarm is cleared, the IPC restores the bit rate you set for the data stream. NOTE: It is recommended that you set the dynamic bit rate to a value greater than the bit rate you set for the data stream. The dynamic bit rate is valid only for primary streams.
   Water mark	You can select it to enable the watermark function to protect information security, trace the anti-counterfeit, and protect the copyright.
   Full frame rate	Frame rate collected through the sensor, representing the maximum capability of a camera. The full frame rate is read-only. NOTE: On the camera web page, users can set the frame rate based on actual requirements and bandwidth conditions. A higher frame rate indicates clearer and more vivid images. The maximum frame rate cannot exceed the full frame rate.
   Resolution mode	Currently only IPC6285-VRZ and IPC-6285-VWZ-LPR support resolution mode. Wide screen: screen ratio and resolution ratio are 16:9, live view image is wider, depth of view is smaller, better for wide scenarios. Narrow screen: screen ratio and resolution ratio are 4:3, live view image is narrower, depth of view is bigger, better for scenarios with large angle of vertical view. For a same camera in a typical scenario, shown as below wide screen Figure 2 and narrow screen Figure 3, wide screen has wider view and narrow screen has larger depth of view. Here using narrow screen is better, image is narrower so no more resources will be needed to display the roadside objects, camera will focus on monitoring middle of the road for cars and license plate, which are more important and interesting in most of cases. Figure 2 Wide screen  Figure 3 Narrow screen
   Layered encoding	You can set layered encoding only when you set Coding protocol to H.264 or H.265. To enable layered encoding, select Layered encoding.
   Intelligent encoding	After intelligent encoding is set, an IPC can automatically adapt to scenarios to reduce the bit rate and save the storage space. A higher intelligent encoding level indicates more significant reduction of the bit rate, which however may lead to image quality deterioration.
   Coding protocol	Set the coding protocol based on the site requirements. The options are as follows: H.264: The H.264 protocol requires relatively small bandwidth to ensure video quality. MJPEG: The MJPEG protocol decodes and displays each frame independently without referring to the previous and next frames. This protocol has a small compression ratio and requires large bandwidth to ensure video quality. This protocol is suitable for video editing. H.265: The H.265 protocol is bandwidth-conserving compared with the H.264 protocol. NOTE: Before connecting an IPC to a surveillance platform, ensure that the encoding protocol of the IPC is the same as that on the surveillance platform to prevent issues (such as live video view or video recording failure) on the surveillance platform. If the surveillance platform does not support the encoding protocol of the IPC, change the encoding protocol of the IPC to that supported by the surveillance platform. Local recordings and SD card recordings support the H.264 and H.265 protocols.
   Encoding complexity	The parameter is available only when you set Coding protocol to H.264. H.264 includes H.264 Base Profile, H.264 Main Profile, and H.264 High Profile. Of them, H.264 Base Profile has the lowest encoding compression performance and lowest requirements on hardware decoding performance, while H.264 High Profile has the highest. The encoding complexity of H.265 is H.265 Main. When the coding protocol is changed from MJPEG and H.265 back to H.264, H.264 High Profile is used by default.
   Resolution	Increasing the resolution improves the video quality but consumes more bandwidth. When the resolution of 4K cameras is dimmed, check whether the area cropping function is enabled. If the function is enabled, disable the function and re-select a resolution. NOTE: The PAL standard primarily applies to China and Europe. The NTSC standard primarily applies to America and Japan.
   Bit rate type	The parameter is available only when you set Coding protocol to H.264 or H.265. The bit rate is the number of data bits transmitted in a unit of time. Variable bit rate: The bit rate varies depending on the image complexity to ensure the definition of images with great dynamic changes. The bit rate is low if the image is simple or static. The variable bit rate is recommended. Constant bit rate: The constant bit rate remains the same. The upper limit of the instantaneous bit rate is set to 110%. If the bit rate is incorrectly configured for images with great dynamic changes, the images will be unclear.
   Bit rate value	The parameter is available only when you set Bit rate type to Constant bit rate. Increasing the bit rate value improves the video quality but consumes more bandwidth. To ensure video quality, you must set a proper bit rate value based on the site requirements. To ensure video smoothness, the actual bandwidth is greater than the bit rate value. When the bit rate is low, the required bandwidth is generally 1.2 times of the bit rate. When the total bit rate of enabled live video streams exceeds 40 Mbit/s, you are advised to reduce the bit rate or the number of enabled video streams to prevent image freezing or artifacts caused by large bit streams.
   Bit rate control mode	The parameter is available only when you set Bit rate type to Constant bit rate. The options are as follows: Frame rate priority: The frame rate stability is preferentially ensured. However, if the scenario is complex or if the object moves quickly in an image, the actual bit rate can be greater than the preset value. Image quality priority: The image quality is preferentially ensured. However, if the scenario is complex or if the object moves quickly in an image, frame loss may occur or live video may not be played smoothly.
   Bit rate upper limit	The parameter is available only when you set Bit rate type to Variable bit rate. The bit rate range is associated with the resolution.
   Frame rate	The frame rate is the number of frames displayed in a second. Increasing the frame rate improves the video quality but consumes more bandwidth.
   Image quality	The parameter is available only when you set Coding protocol to H.264 and H.265 and Bit rate type to Variable bit rate. NOTE: Better image quality indicates that more network bandwidth is consumed. Configure a proper image quality value based on the site requirements.
   I-frame interval	The parameter is available only when you set Coding protocol to H.264 or H.265. I-frame is an intra-coded frame that represents a fixed image independent of other picture types. Each group of pictures (GOP) begins with this type of frame. Decreasing the I-frame interval improves the video quality but consumes more bandwidth. NOTE: It is recommended that the I-frame interval be set to two times of the frame rate.
   JPEG quality	The parameter is available only when you set Coding protocol to MJPEG. Increasing the JPEG quality improves the video quality but consumes more bandwidth.
   Area Cropping	You can select an area on the video image for encoding and use secondary streams in this area. When choosing Stream type as Primary,Secondary 1 or Primary,Secondary 1,Secondary 2, you can configure Area Cropping in Secondary 1 or Secondary 2 menu. NOTE: When choosing Secondary 1, you can set Resolution to 1920*1080, 1280*720, 720*576, or 720*480. When choosing Secondary 2, you can set Resolution to 720*576, 720*480, 352*288, or 352*240. Select Enable area cropping. Drag the mouse pointer to adjust the area to crop. Choose  in Preview, you can use EPTZ function. NOTE: The electronic PTZ (EPTZ), different from the PTZ, adjusts the focal length or shooting angle through software not lens zooming or PTZ rotation. The EPTZ is mainly used to zoom in on high-resolution images to show more image details. Due to the limited pixels of low-resolution images, a too large zoom will result in artifacts. For some models (for example, IPC6125-WDL-P, IPC6225-VRZ, IPC6625-Z30, IPC6325-WD-VRZ), if electronic image stabilization is enabled, area cropping cannot be enabled. The EPTZ function can be used only after the area cropping function is enabled and live video is switched to the required secondary stream type. A shorter distance between the arrow and the cross indicates a shorter arrow and a slower rotation speed. You can scroll the mouse wheel to control the zoom. The image is zoomed in when the mouse wheel is scrolled up and zoomed out when the mouse wheel is scrolled down.

3. Click Save.