关于本地SWF文件在Google Chrome中无法播放及重复下载的问题咨询

Hey there, let's sort out this annoying issue with Chrome and your local SWF files—totally get why this would drive you crazy. Here's the breakdown of what's happening and how to fix it:

Why This Happens #

Chrome completely dropped support for Adobe Flash Player (and all NPAPI plugins) back in 2020. Since SWF files are tied to Flash, Chrome no longer knows how to render them natively. The repeated downloads happen because the browser defaults to downloading unrecognized file types, and the "harmful file" warning is its built-in security flag for outdated, unsupported formats.

Solutions to Try #

1. Use the Standalone Adobe Flash Player Projector (Most Reliable & Safe) #

Adobe released a standalone desktop player specifically for SWF files that doesn't rely on browser plugins. Here's how to use it:

• Grab the standalone Flash Player Projector (it's a free, official tool from Adobe—no browser integration needed)
• Once downloaded, launch the player
• Drag and drop your local SWF file directly into the player window, or use the "File > Open" menu to select it
• You can even adjust playback settings like window size, fullscreen mode, or enable hardware acceleration from the player's menu

2. Modify Chrome's Launch Flags (For Testing Only!) #

Warning: This reduces Chrome's security protections—only use this temporarily and revert it afterward.

• Close all open Chrome windows completely
• Right-click your Chrome desktop shortcut and select "Properties"
• In the "Target" field, add the following text to the end (make sure there's a space before the first hyphen):
  --allow-outdated-plugins --disable-web-security --allow-file-access-from-files
• Click "Apply" then launch Chrome using this shortcut
• Now try dragging your SWF file into the Chrome window—it should play instead of downloading
• When you're done, go back to the shortcut properties and remove those flags to restore Chrome's security settings

3. Convert the SWF to a Universal Format (Permanent Fix) #

If you want to avoid dealing with Flash entirely, convert the SWF to an MP4 or another widely supported video format using a local tool like FFmpeg:

• Install FFmpeg on your computer
• Open a command prompt/terminal and navigate to the folder where your SWF file is stored
• Run this command (replace input.swf with your file name and output.mp4 with your desired output name):
  ffmpeg -i input.swf output.mp4
• Once converted, you can play the MP4 file in Chrome, any media player, or even upload it to cloud storage without issues

Final Recommendation #

Stick with the standalone Flash Player Projector for quick playback, or convert the file to MP4 if you want a long-term solution. The Chrome flag trick is handy for testing but not ideal for regular use due to security risks.

内容的提问来源于stack exchange，提问作者user6226580