Uploaded July 2025 | Updated September 2026, 1 week ago

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How to fix Codec not supported: VLC could not decode the format

Having trouble playing vertical videos on VLC under Linux? You're not alone. In this quick fix, I explain why VLC throws a “Codec not supported” error and show you how to solve it in seconds—especially if you're using Arch Linux. Install the right plugins and get back to smooth playback instantly!