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cam4-downloader

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Cam4 Downloader (Browser Extension)

Cam4下载器（浏览器扩展）

Record Cam4 live streams and download recorded videos as MP4 files for offline viewing.
Cam4 Downloader is a browser extension built for people who want a simple way to save Cam4 videos without messing with stream URLs, scripts, or desktop tools. It works on live broadcasts and recorded videos, detects available qualities automatically, and saves the final file as MP4 so it plays anywhere.
  • Record Cam4 live streams before they end
  • Download recorded videos from performer and profile pages
  • Pick from available resolutions up to 1080p and 60fps where supported
  • Save videos as standard MP4 files for offline playback
  • Use player controls, popup controls, or right-click actions
录制Cam4直播流，将录播视频下载为MP4文件以供离线观看。
Cam4下载器是一款浏览器扩展，专为想要简单保存Cam4视频、不想折腾直播流地址、脚本或桌面工具的用户打造。它支持直播和录播视频，可自动检测可用画质，将最终文件保存为MP4格式，可在任意设备播放。
  • 可在Cam4直播结束前录制直播流
  • 从主播页和个人主页下载录播视频
  • 可选择支持的最高1080p、60fps的分辨率
  • 将视频保存为标准MP4文件以便离线播放
  • 支持播放器控件、弹窗控件或右键操作

Links

相关链接

Preview

预览

<p align="center"> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-live-stream-detected.png" alt="Cam4 live stream detected by the extension" width="31%" /> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-quality-picker.png" alt="Cam4 quality picker inside the extension popup" width="31%" /> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-download-finished.png" alt="Completed Cam4 video download saved as MP4" width="31%" /> </p> <p align="center"> <em>Example flow: detect stream, choose quality, save MP4.</em> </p>
<p align="center"> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-live-stream-detected.png" alt="扩展检测到Cam4直播流" width="31%" /> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-quality-picker.png" alt="扩展弹窗内的Cam4画质选择器" width="31%" /> <img src="https://raw.githubusercontent.com/serpapps/cam4-downloader/refs/heads/main/assets/cam4-download-finished.png" alt="Cam4视频下载完成，已保存为MP4" width="31%" /> </p> <p align="center"> <em>使用流程示例：检测流、选择画质、保存MP4</em> </p>

Table of Contents

目录

Why Cam4 Downloader

为什么选择Cam4下载器

Cam4 is built for streaming, not for saving. Live broadcasts disappear when they end, and recorded videos are usually delivered through streaming methods that generic download extensions do not handle well. That leaves most users stuck with unreliable workarounds or tools that only work part of the time.
Cam4 Downloader is designed specifically for that gap. Instead of asking you to inspect network requests or copy playlist URLs, it adds a direct browser-based workflow for capturing live sessions and downloading recorded content in a file format you can actually use.
Cam4本身是为流媒体播放设计的，不支持内容保存。直播结束后就会消失，而录播视频通常通过通用下载扩展无法很好支持的流媒体协议分发，导致大多数用户只能用不可靠的变通方案，或者只能部分时间可用的工具。
Cam4下载器就是专门为填补这个空白设计的。你不需要抓包网络请求或者复制播放列表地址，它提供了直接在浏览器中运行的工作流，可捕获直播内容、下载录播内容，导出为你可以正常使用的文件格式。

Features

功能特性

  • Live stream recording for active Cam4 broadcasts
  • Recorded video downloads from supported Cam4 pages
  • Automatic stream detection after playback starts
  • Quality picker for available resolutions
  • Support for high-quality sources up to 1080p and 60fps where available
  • In-page controls for faster access
  • Popup controls for download management
  • Right-click context menu support
  • MP4 output for broad device compatibility
  • Dedicated download folder organization
  • VR stream support where available
  • Works on Chrome, Edge, Brave, Opera, Firefox, Whale, and Yandex
  • 支持正在播出的Cam4直播流录制
  • 支持从兼容的Cam4页面下载录播视频
  • 播放开始后自动检测直播流
  • 画质选择器可选择可用的分辨率
  • 支持最高1080p、60fps的高清源（如有）
  • 页内控件可快速访问功能
  • 弹窗控件可管理下载任务
  • 支持右键上下文菜单
  • 输出MP4格式，设备兼容性广
  • 专属下载文件夹分类管理
  • 支持VR流（如有）
  • 兼容Chrome、Edge、Brave、Opera、Firefox、Whale、Yandex浏览器

How It Works

工作原理

  1. Install the extension from the latest release.
  2. Open Cam4 and go to a live room or recorded video page.
  3. Start playback so the extension can detect the stream.
  4. Open the popup or use the on-page download controls.
  5. Select the quality you want if multiple options are available.
  6. Start recording for live video or begin downloading for recorded content.
  7. Save the finished MP4 file to your computer.
  1. 从最新版本安装扩展
  2. 打开Cam4，进入直播间或者录播视频页面
  3. 开始播放，让扩展可以检测到直播流
  4. 打开扩展弹窗或者使用页面内的下载控件
  5. 如果有多个画质可选，选择你需要的画质
  6. 直播内容点击开始录制，录播内容点击开始下载
  7. 将完成的MP4文件保存到你的电脑

Step-by-Step Tutorial: How to Download Videos from Cam4

分步教程：如何从Cam4下载视频

  1. Open the latest release and install Cam4 Downloader in your browser.
  2. Visit Cam4 and sign in if the page you want requires account access.
  3. Open the live stream or recorded video you want to save.
  4. Let the player load fully and press play.
  5. Click the Cam4 Downloader button in the browser toolbar or on the page.
  6. Choose the quality option you want from the list shown by the extension.
  7. If it is a live stream, click Start and let the recording run until you are done.
  8. If it is a recorded video, click Download and wait for the transfer to finish.
  9. Open the saved MP4 from your Downloads folder.
  1. 打开最新版本页面，在你的浏览器中安装Cam4下载器
  2. 访问Cam4，如果目标页面需要账号权限请先登录
  3. 打开你想要保存的直播流或者录播视频
  4. 等待播放器完全加载并点击播放
  5. 点击浏览器工具栏或者页面内的Cam4下载器按钮
  6. 从扩展展示的列表中选择你想要的画质选项
  7. 如果是直播流，点击开始，保持录制直到你想要结束
  8. 如果是录播视频，点击下载，等待传输完成
  9. 从你的下载文件夹中打开保存好的MP4文件

Supported Formats

支持格式

  • Input: Cam4 live streams
  • Input: Cam4 recorded videos
  • Output: MP4
Saved files are produced in standard MP4 format so they work in normal media players, phone transfers, offline archives, and most editing software.
  • 输入：Cam4直播流
  • 输入：Cam4录播视频
  • 输出：MP4
保存的文件为标准MP4格式，可在普通媒体播放器、手机传输、离线归档和大多数剪辑软件中使用。

Who It's For

适用人群

  • Cam4 viewers who want to keep live broadcasts before they disappear
  • Users with access to recorded videos who want offline playback
  • People building a personal archive of content they are allowed to save
  • Non-technical users who want a browser extension instead of a desktop recorder
  • Users who want a cleaner workflow than manual stream extraction
  • 想要在直播消失前保存Cam4直播的观众
  • 有权限访问录播视频、想要离线观看的用户
  • 想要搭建有权限保存的内容个人归档的用户
  • 不想用桌面录制工具、想要浏览器扩展的非技术用户
  • 想要比手动提取流更简洁工作流的用户

Common Use Cases

常见使用场景

  • Record a live Cam4 performance for later viewing
  • Save recorded videos from a performer page
  • Keep access to purchased or member-only content you are allowed to download
  • Download the best available quality for offline playback
  • Save VR-supported content for later viewing on compatible devices
  • 录制Cam4直播演出供稍后观看
  • 保存主播页面的录播视频
  • 保存你有权限下载的已购买或会员专属内容
  • 下载最高可用画质供离线播放
  • 保存支持VR的内容，后续在兼容设备上观看

Troubleshooting

问题排查

The extension is not detecting the video
Press play first and wait a few seconds. Stream detection usually starts after playback begins.
The download button does not appear on the page
Open the extension popup manually. Some supported pages work better from the popup than from in-page controls.
No quality options are showing
Some streams only expose one playable source. In that case, the extension will use the available stream automatically.
The live recording stopped too early
Make sure the stream stayed active for the full session and that your internet connection did not drop during capture.
The page requires login or membership access
The extension only works on content you can already access in your browser session.
扩展没有检测到视频
先点击播放，等待几秒。流检测通常在播放开始后启动。
页面上没有出现下载按钮
手动打开扩展弹窗。部分支持的页面用弹窗控件比页内控件体验更好。
没有展示画质选项
部分流只提供一个可用播放源，这种情况下扩展会自动使用可用的流。
直播录制提前停止
请确认直播全程保持活跃，且捕获过程中你的网络连接没有断开。
页面需要登录或者会员权限
扩展仅支持你当前浏览器会话中已经可以访问的内容。

Security & Scope

安全与权限范围

  • Operates only on the page the user intentionally opens in the active browser tab
  • Detects supported playback sources only for user-initiated downloads or exports
  • Does not execute page instructions, shell commands, or arbitrary scripts from page content
  • Does not follow unrelated links or perform actions outside the active workflow
  • Limits support to the named platform, approved embedded contexts, and user-authorized sessions when required
  • 仅在用户主动在当前浏览器标签页打开的页面上运行
  • 仅为用户主动发起的下载或导出检测支持的播放源
  • 不会执行页面指令、shell命令，或者页面内容中的任意脚本
  • 不会跳转无关链接，也不会执行当前工作流之外的操作
  • 仅支持指定平台、经过批准的嵌入上下文，以及需要时用户授权的会话

Trial & Access

试用与获取

  • Includes 3 free downloads so you can test the workflow first
  • Email sign-in uses secure one-time password verification
  • No credit card required for the trial
  • Unlimited downloads are available with a paid license
Start here: https://serp.ly/cam4-video-downloader
  • 包含3次免费下载额度，你可以先测试整个使用流程
  • 邮箱登录使用安全的一次性密码验证
  • 试用不需要绑定信用卡
  • 付费许可可解锁无限下载
立即开始：https://serp.ly/cam4-video-downloader

Installation Instructions

安装说明

  1. Open the latest release page: https://github.com/serpapps/cam4-downloader/releases/latest
  2. Download the build for your browser.
  3. Install the extension.
  4. Open Cam4 and go to a live stream or recorded video page.
  5. Use the extension controls to start recording or downloading.
  1. 打开最新版本页面： https://github.com/serpapps/cam4-downloader/releases/latest
  2. 下载对应你浏览器的安装包
  3. 安装扩展
  4. 打开Cam4，进入直播流或者录播视频页面
  5. 使用扩展控件开始录制或者下载

FAQ

常见问题

Can I record Cam4 live streams?
Yes. Live broadcasts can be recorded while they are actively streaming.
Can I download recorded Cam4 videos too?
Yes. The extension supports recorded videos on supported Cam4 pages.
What file format do downloads use?
Videos are saved as MP4 files.
What quality options are available?
That depends on the source stream. The extension lists whatever qualities Cam4 makes available on that page.
Does this work with VR content?
Yes, where compatible VR stream data is available.
Where are videos saved?
They are saved to your browser's default Downloads location, typically inside a CAM4-related subfolder.
Do I need extra software?
No. The workflow runs through the browser extension.
我可以录制Cam4直播流吗？
可以，直播正在播出时可以录制。
我也可以下载Cam4的录播视频吗？
可以，扩展支持兼容Cam4页面上的录播视频。
下载的文件是什么格式？
视频保存为MP4文件。
有哪些画质选项可用？
取决于源直播流，扩展会列出Cam4在该页面提供的所有可用画质。
支持VR内容吗？
是的，只要有兼容的VR流数据可用就支持。
视频保存在哪里？
保存在你浏览器的默认下载位置，通常在CAM4相关的子文件夹中。
我需要额外的软件吗？
不需要，整个工作流都在浏览器扩展中运行。

License

许可

This repository is distributed under the proprietary SERP Apps license in the LICENSE file. Review that file before copying, modifying, or redistributing any part of this project.
本仓库按照LICENSE文件中的SERP Apps专有许可分发。在复制、修改或重新分发本项目任何部分之前，请先阅读该文件。

Notes

注意事项

  • An active internet connection is required
  • Live recording only works while the broadcast is actually live
  • Some videos may require account access, membership, or payment
  • Source quality depends on the stream provided by Cam4
  • Only download content you own or have permission to save
  • 需要活跃的网络连接
  • 仅在直播实际播出时才能进行直播录制
  • 部分视频可能需要账号权限、会员资格或者付费
  • 源画质取决于Cam4提供的流质量
  • 仅下载你拥有或者有权限保存的内容

About Cam4

关于Cam4

Cam4 is a live cam platform centered on real-time broadcasts, performer rooms, and recorded video content. It is optimized for online streaming, which makes offline saving awkward for normal users. Cam4 Downloader simplifies that process for people who want a direct browser-based way to keep accessible content in MP4 format.
Cam4是一个主打实时直播、主播直播间和录播视频内容的直播平台，它针对在线流媒体做了优化，导致普通用户很难将内容保存到本地。Cam4下载器为有需求的用户简化了这一流程，提供基于浏览器的直接方案，可将可访问的内容保存为MP4格式。