EzCAP ezcap325 User manual

manual
Live Cam
Model number: ezcap325

1
Overview
1, PCI-E X1: Connect to PCI-E slot of your computer
2, HDMI IN: HDMI input port, connect to camera or other video source
3, SDI IN: SDI input port, connect to camera or other video source
Note: It is not recommended to connect HDMI signal and SDI signal at the same time, if
they are connected at the same time, SDI signal will be given priority by default.
In the Box
ezcap325 Live Cam x1, Standard Profile Bracket x1, Manual x1
Hardware
Before installing ezcap325 Live Cam capture card, make sure your computer has a free
PCI-E X1 slot.

2
Before you get started, make sure your PC is shut down. Then disconnect all the cables
from the back of the computer. Only begin this process when everything is
disconnected.
Remove the cover on the PC. After you identify a PCIe slot, unscrew the small metal
bracket attached to the computer case directly behind the PCIe slot. Gently yet firmly,
slide the video capture card into the PCIe slot, making sure it's fully locked down. Screw
the card into the back of the case so that the inputs and outputs are exposed on the
back of the computer case. Place the panel on the case, put the screws back in, and
stand the case upright. Plug all the cables back into the case. Power on the PC.
System will automatically recognize the game capture card, and you will see the device
name “ezcap Live Cam” in the Device Manager, which means that the device is ready
to work.
Note: We don't recommend using the device on Windows 7 system, but if you need,
please download the driver and install it.
http://www.cddownload.top/ezcap323win7driver.zip
Software
For professional live streaming or recording, we suggest use OBS, download
link:https://obsproject.com/
Note: ezcap Live Cam capture card also can work with Mac Pro, and please download
OBS Mac version. The operation is similar as working under Windows as below.

3
Work with OBS
Select Device
After download and installation, double click OBS Studio icon on desktop to run OBS.
Click icon +under Sources window at the bottom left of OSB panel, and select Video
Capture Device. Click OK in the new pop-up window. You also can insert a name you
want to create for the device. One window will appear you after above. Please click the
drop-down box next to Device and select ezcap Live Cam.
Video Setting
You should get the video in window. If you want to set the video resolution, click the
drop-down box next to Resolution/FPS Type and select Custom, then click the
drop-down box next Resolution to select one resolution.
Note: The default output resolution of ezcap325 Live Cam capture card is 1920 x 1080
@ 60fps NV12, because the Max input resolution of SDI source is 1920 x 1080. The Max
input resolution of HDMI source is 3840 x 2160 @30fps, and then you can choose the

4
output resolution to the same resolution.
After you set the resolution to 3840 x 2160, and you change the video source, and the
resolution of video source is smaller than 3840 x 2160, such as 1920 x 1080, the
software will not display the video and you will see Check Resolutions Settings on the
window. Now you need to set resolution to 1920 x 1080 or smaller resolution, then you
will see the video on the window.
If resolutions of video source and device output are3840 x 2160, you may find that the
viewing picture is way out of the frame of OBS. Right click image window of OBS, select
Resize output(source size), and you will get the whole picture.
You can click the drop-down box next to FPS to select the appropriate FPS -
30,60,Highest FPS, or Match Output FPS, and click the drop-down box next to Video
Format to select the video format -XRGB, NV12,or YUY2.
The video format options depend on resolution, the max FPS depends on both

5
resolution and video format:
Video Format options
MAX FPS
3840 x 2160
NV12
30
1920 x 1080
NV12
120
YUY2
60
XRGB
30
2560 x 1440
NV12
60
YUY2
50
1280 x 720
NV12
60
YUY2
60
XRGB
60
Audio Setting
You may can not hear the sound when you finish above settings. Please tick Use
custom audio device, and click the drop-down box next to Audio Device and select
HDMI (ezcap Live Cam), you will hear the sound now.
If you still cannot hear the sound, please click under Audio Mixer and Video
Capture Device at the bottom middle of OBS panel as below picture and select
Advanced Audio Properties. In Advanced Audio Properties window, click drop-down
box under Audio Mornitoring and select Monitor Only (mute output). Please set to -
470ms under Sync offset, for audio and video sync, you can adjust it till your audio

6
video is synchronous.
Maybe you hear the noise if the resolution is 3820 x 2160. Please click the drop box
next to Audio Output Mode as above picture, and change the selection from
Capture audio only to Output desktop audio (WaveOut) or Output desktop
audio (DirectSound).
Note：If you hear the noise when using SDI input, please select Audio Output Mode
to Output desktop audio (WaveOut) or Output desktop audio (DirectSound).And if
the audio sampling rate of your video source is not 48Khz, then you will hear a bad
sound.
Note: If you want to change video audio settings, please double click the name of
video capture device in Sources column, and change the settings you want as above
operations.
Recording
Click Settings in the low right corner of OSB panel, and click Video on the left in the
pop-up Settings window. Click the drop-down box next to Base (canvas) Resolution to

7
select the appropriate resolution, and click the drop-down box next to Output (Scaled)
Resolution to select the output resolution. Click the drop-down box next to Common
FPS Values to select the FPS values. If you want to record 120HZ video, please click the
drop-down box of Common FPS Values and select Integer FPS Values, then enter 120
in the window on the right.
Click Output on the left of Settings window as above, in Recording column, you can set
Recording Path, Recording Quality, Recording Format, Encoder. If you want record a
better quality, one of the suggest setting is:
Recording Quality
High Quality, Medium File Size
Recording Format
Mp4
Encoder
Software (x264 low CPU usage preset, increase file size
After setting, click Apply and Ok in the low right corner of Settings panel, then simply
click Start Recording in the low right corner of OSB panel to start recording videos, and
click Stop Recording to stop recording.

8
Streaming
Click Output in the Settings panel, in the Streaming column, set video quality for
streaming (adjust depends your computer, network speed), then click icon Apply and
OK in the Settings panel. Click Stream in the Settings panel then you can click the
drop-down box next to Service to choose the software platform you want, then click
icon Apply and OK in the Settings panel.
Click Start Streaming in the low right corner of OSB panel to start streaming, and click
Stop Streaming to stop streaming.
Note: Please click the help at the top of the OBS interface, and learn more about OBS in
the link that pops up.
Specifications
Interface
PCIe Gen 2 X1
Input
HDMI 1.4 or 3GSDI
Audio Input
HDMI，SDI
Max. Recording Resolution(HDMI)
1080p120, 2160p30, 1440p60
Max. Recording Resolution(SDI)
1080p60
Supported Resolution(HDMI)
2160p, 1440p, 1080p, 720p
Supported Resolution(SDI)
1080p,720p

9
Video Format(HDMI)
YUY2, NV12, XRGB
Video Format(SDI)
YUY2, NV12,XRGB
Dimensions (W x D x H)
130 x 80 x 22 mm
Operating System
Windows 10 x64, PCI-E X1 slot
For 4Kp30 or 1080p120 recording:
- Intel Core i5-6XXX / AMD Ryzen 3 XXX or above
- NVIDIA GTX 1060 / AMD RX 5700 or above
- 8 GB*
For 1080p60 recording：
- Intel Core i5-3330 or above (i7-3770 recommended)
- NVIDIA GeForce GTX 650 / AMD Radeon R7 250X or above
- 4 GB
* RAM must be DDR4 2400 or above
Mac system requirement:
Mac Pro, MacOS X High Sierra 10.15 and above, PCI-E X1slot

10
概览
1, PCI-E X1: 插入到电脑的 PCI-E 槽
2, HDMI IN: HDMI 输入接口, 连接到摄像机或别的视频源
3, SDI IN: SDI 输入接口, 连接到摄像机或别的视频源
注意：不建议同时接入 HDMI 和SDI 信号，如果同时接入的话，SDI 信号优先。
包装内容
ezcap325 Live Cam SDI HDMI 高清采集卡 x1, 标准板卡支架 x1,说明书 x1
硬件
在安装 ezcap325 Live Cam SDI HDMI 高清采集卡之前，请确保您的计算机具有可用的 PCIe

11
插槽。在开始之前，请确保您的电脑已关闭。然后从计算机背面断开所有电缆的连接, 仅在断开
所有连接时才开始此过程。卸下主机上的护盖。识别 PCIe 插槽后，拧下紧接在 PCIe 插槽后面
的计算机机箱上的金属小支架。将视频采集卡轻轻而牢固地插入 PCIe 插槽，确保其完全锁定。
将卡拧入机箱的背面，使输入和输出暴露在机箱的背面。将面板放在机箱上，拧回螺钉。将所有
电缆重新插入外壳。打开电脑电源。
系统会自动识别该 SDI HDMI 高清采集卡,你会在设备管理器看到设备名称 ezcap Live Cam,则
表示设备已经可以工作了.
注:通常我们建议在 Windows 10 下使用该设备,而不建议于 Windows 7 下使用,如果您确实需要,
请下载驱动并安装.
http://www.cddownload.top/ezcap323win7driver.zip
软件
我们推荐免费的专业的直播及录制软件 OBS, 下载地址：https://obsproject.com/
注:ezcap Live Cam SDI HDMI 高清采集卡也可与 Mac Pro 配合使用,下载 OBS Mac 版本即可.
操作与下面在 Windows 下使用说明类似.
配合 OBS 使用
设备选择
下载并安装后，双击桌面上的 OBS Studio 图标以运行 OBS。单击 OSB 面板左下角的图标+，
然后选择视频采集设备。在弹出的窗口中单击确定，在这个窗口你也可以为设备改写新的名称。

12
点击确定之后，在弹出的窗口中单击设备旁边的下拉框，然后选择 ezcap Live Cam。
视频设置
这些设置完成后，应该能在软件捕获窗口中看到视频。如果你需要设置视频分辨率， 单击分辨
率/ FPS 类型旁边的下拉框，然后选择自定义，然后单击分辨率旁边的下拉框，选择一种你需要
的分辨率。
注:因为 SDI 输入时最大支持输入分辨率为 1920 x 1080, 所以我们设定 ezcap Live Cam SDI
HDMI 高清采集卡的默认输出分辨率为 1920 x 1080. 如果你在使用 HDMI 输入源时,则最大分
辨率支持 3840 x 2160 @30fps, 此时你可以将设备输出分辨率设置为 3840 x 2160.
在你设置了分辨率为 3840 x 2160 后, 如果你更改了视频源的分辨率小于 3840 x 2160, 比如
1920 x 1080，则软件将不会显示视频，并且会在窗口上看到 Check Resolutions Settings。
这时你需要将分辨率设置为 1920 x 1080 或更小分辨率 ，这样才能在窗口中看到视频。

13
若您的视频源分辨率为 3840 x 2160, 且将 OBS 分辨率也设置为 3840x2160, 你还可能会发现
画面超出了 OBS 画框的范围。此时可右击软件窗口，选择调整输出大小（到源大小）,则可将画
面刚好填满画框。
您可以点击 FPS 旁的下拉框以选择适当的帧率– 30,60,最高 或匹配输出帧率.还可点击视频格
式旁的下拉框以选择适当的视频格式 –XRGB, NV12, YUY2 或任意.
设备输出视频格式取决于分辨率,不同分辨率下不同视频格式的最高可达帧率（FPS）对应关系如
下：
视频格式
最大帧率
3840*2160
NV12
30
1920*1080
NV12
120
YUY2
60
XRGB
30

14
2560*1440
NV12
60
YUY2
50
1280*720
NV12
60
YUY2
60
XRGB
60
音频设置
完成以上设置后，你可能听不到声音。请在上述视频设置的界面下勾选使用自定义的音频设备，
然后单击音频设备旁边的下拉框，选择 HDMI（ezcap Live Cam），你应该能立即听到声音。
单击窗口右下角的确定按键完成设置。
如果仍然听不到声音，请单击混音器界面的 图标，然后选择高级音频属性。在新的弹出
窗口中，单击音频监听下的下拉框，然后选择仅监听（输出静音）。
为了音视频同步,请在上述弹出的窗口中的同步偏移下方填写- 470ms.你可依据实际情况调整数

15
值,直至音视频完全同步。最后单击界面右下角的关闭按键完成设置。
如果分辨率是 3820 x 2160, 那或许你会听到杂音. 请点击上面图片中音频输出模式旁的下
拉框, 将 选 项 从 只 采 集 音 频 改成输 出 桌 面 音 频 (WaveOut) 或输 出 桌 面 音 频
(DirectSound).
注意：如果采用 SDI 输入方式时听到噪音，请将音频输出模式选为输出桌面音频 (WaveOut) 或
输出桌面音频 (DirectSound).并且如果你的视频源的音频采样率不是 48KHz 的话，你就会听
到一个很糟糕的声音。
注意：如果要更改视频或音频设置，可在软件界面下方的来源窗口，双击视频采集设备，进入视
频采集设备面板，按照上文所说的音视频设置操作步骤更改设置。
录制
单击 OSB 面板右下角的设置按键，然后在弹出的设置窗口中单击左侧的视频。单击基础（画布）
分辨率旁边的下拉框选择适当的分辨率,单击常用 FPS 值（帧率）右侧的下拉框以选择 FPS 值.
如果要录制 120HZ 视频，请单击常用 FPS 值（帧率）本身的下拉框,选择整数 FPS 值（帧率），
然后在右侧栏框处输入 120。
在设置完成后，单击设置界面右下角的应用和确定按键以保存设置。

16
单击设置窗口左侧的输出，在 录像这一栏目下可以设置录像路径，录像质量，录像格式，编码器。
如果要记录更好的录制质量，建议的设置之一是：
录制质量
高质量，中等文件大小
录制格式
Mp4
编码器
软件（x264 低CPU 使用预设，将会增加文件大小）
在各项设置完成后，单击设置面板右下角的应用和确定，然后只需单击 OSB 面板右下角的开始
录制按键即可开始录制视频，单击停止录制即可停止录制。
推流（直播）
单击软件界面的设置按键，然后点击设置面板左侧的输出，在串流这一栏目下，可以设置串流的
视频比特率，编码器，音频比特率（根据计算机配置及网络速度进行调整）.
单击设置面板左侧的推流图标，然后单击服务这一栏旁边的下拉框以选择所需的软件平台，点击
设置面板右下角的应用和确定图标完成设置。
单击 OSB 软件面板右下角的开始推流就可以开始直播，点击停止推流就可以停止本次推流。

17
注意：您可以单击软件界面顶部的帮助菜单，登录 OBS 网站详细了解更多的使用方法.
产品规格
接口
PCIe Gen2 X1
视频输入
HDMI 1.4 或3GSDI
音频输入
HDMI，SDI
最大录制分辨率（HDMI）
1080p120, 2160p30,1440p60
最大录制分辨率（SDI）
1080p60
支持分辨率（HDMI）
2160p, 1440p, 1080p, 720p
支持分辨率（SDI）
1080p，720p
视频格式（HDMI）
YUY2, NV12, XRGB
视频格式（SDI）
YUY2, NV12，XRGB
尺寸 (长x 宽x 高)
130 x 80 x 22 毫米
电脑系统需求
Windows 10 x64, PCI-E X1 插槽
4Kp30 或1080p120 录制：

18
- Intel Core i5-6XXX / AMD Ryzen 3 XXX 或以上
- NVIDIA GTX 1060 / AMD RX 5700 或以上
- 8 GB*
1080p60 录制:
- Intel Core i5-3330 or above (推荐 i7-3770)
- NVIDIA GeForce GTX 650 / AMD Radeon R7 250X 或以上
- 4 GB
* RAM must be DDR4 2400 或以上
Mac:
Mac Pro,MacOS X High Sierra 10.15 或以上, 空闲 PCI-E X1 插槽
VER：20210609