如何将Nginx+OBS生成的本地m3u8推至公网？求免费方案

Hey there! Let's work through your problem with free, practical solutions tailored for teaching purposes. First, let's break down the feasibility of your two ideas, then walk through step-by-step implementations.

方案可行性分析 #

你的方案1：Nginx写入/删除到MySQL或云存储 #

• MySQL存储视频文件：Not feasible. MySQL is designed for structured data, not large binary files like .ts segments. Storing video here will kill performance, waste space, and is totally overkill for your use case.
• 云存储替代MySQL：Absolutely feasible. Free cloud storage options (with limited free tiers) can work, but you'll need tools to sync Nginx's local files to the cloud automatically. This is better for long-term hosting but has more setup steps than your second idea.

你的方案2：开放存储文件夹的公网访问 #

• Totally feasible (and perfect for teaching)：This is the simplest, cheapest way to get your HLS stream online for demo purposes. You just need a way to expose your local Nginx server to the public internet—no need to move files anywhere.

免费实现步骤 #

优先推荐：内网穿透 + 本地Nginx开放文件夹（最简单，适合教学演示） #

This approach lets you share your local HLS stream directly without moving files. We'll use free tools to tunnel your local Nginx server to the public internet.

Step 1: Verify your local Nginx setup

First, make sure your Nginx is correctly serving the HLS files. Update your Nginx config (usually at /etc/nginx/sites-available/default) to enable directory listing and proper MIME types for HLS:

server {
    listen 80;
    server_name localhost;

    # Point this to your HLS file directory
    location /hls {
        root /var/www;
        autoindex on; # Lets you browse files (useful for testing)
        types {
            application/vnd.apple.mpegurl m3u8;
            video/MP2T ts;
        }
        add_header Access-Control-Allow-Origin *; # Fixes CORS issues for players
    }
}

Test the config with sudo nginx -t, then reload Nginx: sudo systemctl reload nginx. Confirm you can access http://your-local-ip/hls/name.m3u8 locally.

Step 2: Use Ngrok (free, zero-config tunneling)

Ngrok is perfect for quick demos—no server required, just a free account.

1. Sign up for a free Ngrok account, download the client for your OS.
2. Unzip the client, then run this command (assuming your Nginx uses port 80):

   ./ngrok http 80
   

3. You'll see a public URL like https://abc123.ngrok-free.app in the output. Now anyone can access your stream at https://abc123.ngrok-free.app/hls/name.m3u8.
   • Note: Free Ngrok URLs change every time you restart the client, but this is totally fine for short teaching demos.

Alternative: FRP (open-source, more stable if you have a free cloud server)

If you have access to a free cloud server (like Aliyun's student ECS free tier), FRP is a self-hosted tunneling tool that gives you a fixed public address.

1. On your cloud server (FRP server):
   • Download the FRP server binary, unzip it, and create a frps.ini file:

     [common]
     bind_port = 7000 # Port for FRP client to connect
     vhost_http_port = 8080 # Port for public HTTP access
     

   • Start the server: ./frps -c ./frps.ini
2. On your local machine (FRP client):
   • Download the FRP client binary, unzip it, and create a frpc.ini file:

     [common]
     server_addr = your-cloud-server-public-ip
     server_port = 7000
     
     [hls-stream]
     type = http
     local_port = 80 # Your local Nginx port
     custom_domains = your-cloud-server-ip # Or a free domain if you have one
     

   • Start the client: ./frpc -c ./frpc.ini
3. Now the stream is accessible at http://your-cloud-server-ip:8080/hls/name.m3u8.

备选方案：挂载免费云存储到本地（适合 longer-term hosting） #

If you need a persistent public stream (not just a demo), you can sync your local HLS files to a free cloud storage service and serve them directly from the cloud.

Step 1: Choose a free cloud storage provider

• Backblaze B2: 10GB free forever, supports S3-compatible APIs.
• Aliyun OSS: 10GB free for new users (12 months).
• Tencent Cloud COS: 5GB free forever.

Step 2: Mount the cloud storage to your local Nginx directory

We'll use s3fs to mount the cloud bucket as a local folder—so Nginx writes files directly to the cloud automatically.

1. Install s3fs (Ubuntu/Debian example):

   sudo apt update && sudo apt install s3fs
   

2. Create a credentials file for your cloud storage:

   echo "YOUR_ACCESS_KEY:YOUR_SECRET_KEY" > ~/.passwd-s3fs
   chmod 600 ~/.passwd-s3fs
   

3. Mount the bucket to your HLS directory (replace with your provider's endpoint):

   s3fs your-bucket-name /var/www/hls -o passwd_file=~/.passwd-s3fs -o url=https://s3.us-west-004.backblazeb2.com
   

4. Add the mount to /etc/fstab to make it permanent:

   s3fs#your-bucket-name /var/www/hls fuse _netdev,passwd_file=/home/your-username/.passwd-s3fs,url=https://s3.us-west-004.backblazeb2.com 0 0
   

Step 3: Enable static website hosting on the cloud storage

Most free cloud storage services let you enable static website hosting. For example:

• Backblaze B2: Enable "Static Website" for your bucket, use the provided default domain (or bind a free domain if you have one).
• Aliyun OSS: Enable "Static Website Hosting" and ensure files are set to public access.

Now your stream is accessible at http://your-bucket-domain/name.m3u8.

总结推荐 #

• For teaching demos：Go with the 内网穿透 + 本地Nginx approach (Ngrok is easiest). It's free, takes 5 minutes to set up, and lets you show the entire workflow (OBS → Nginx → public stream) without moving files.
• For longer-term hosting：Use the cloud storage mount approach, leveraging free tiers from providers like Backblaze B2.

内容的提问来源于stack exchange，提问作者Samoussa Binou Mymusicisinme