Fix Audio Quality Issue After YouTube Upload (Sounds Fine Locally)

Hi there,

I’m looking for someone with experience in video/audio encoding and YouTube upload optimization.

I have a video file that plays perfectly on my desktop using VLC Media Player, but once uploaded to YouTube, the audio becomes distorted, blurry, and difficult to understand.

Here’s what I’ve observed:

* The original video file sounds completely fine when played locally: https://www.mediafire.com/file/gfat75hdurtufqz/demo_video.mp4/file

* After uploading the same file to YouTube, the audio becomes unclear: https://youtu.be/SFPj53Tvquc

* This issue persists across multiple upload attempts.

---

What I need:

* Identify the cause of the audio degradation during upload (e.g., codec mismatch, bitrate, sample rate, container format).
* Guide me on how to re-encode the video properly to maintain original audio quality after uploading to YouTube.
* Optionally, help me fix a few other similar videos with the same issue.

---

Deliverables:

* Working fix or clear explanation of what’s going wrong.
* Suggested encoding settings, tools (e.g., FFmpeg), or a simple conversion script I can use going forward.

---

Skills Required:

* Audio & Video Encoding
* YouTube Upload Optimization
* FFmpeg or similar tools
* Media Format Troubleshooting

---

If you've encountered similar YouTube upload/audio issues before, please share your approach or examples of how you solved them.

Thanks!