Fix NS_E_8BIT_WAVE_UNSUPPORTED CD Burn Error in Windows Media Player

Yeah, I know this error is infuriating. You just want to burn a CD, and Windows Media Player slaps you with this cryptic hex code.

Here's the good news: the fix takes about two minutes. You're seeing error NS_E_8BIT_WAVE_UNSUPPORTED (0XC00D0BCE) because Windows Media Player (version 12 on Windows 10 and 11) simply does not support 8-bit WAV files for burning to audio CDs. It expects 16-bit PCM WAV, which is the standard for Red Book audio CDs. And it won't tell you that upfront — it just spits out this error and stops.

The Quick Fix: Convert 8-bit WAV to 16-bit PCM

You don't need expensive software. Use Audacity (free, open-source, available at audacityteam.org) or FFmpeg (command-line tool, also free). Here's both ways.

Option 1: Audacity (GUI, beginner-friendly)

1. Open Audacity.
2. Drag your 8-bit WAV file into the window.
3. If you see a warning about the file being 8-bit, just click OK.
4. Go to File > Export > Export as WAV.
5. In the export dialog, set Encoding to Signed 16-bit PCM. Leave everything else default.
6. Save the file with a new name (so you don't overwrite the original).
7. Now add this new 16-bit WAV to Windows Media Player and try burning again.

Option 2: FFmpeg (fast, no GUI, great if you have many files)

Open Command Prompt or PowerShell in the folder with your 8-bit WAVs. Run this single command:

for %i in (*.wav) do ffmpeg -i "%i" -acodec pcm_s16le -ar 44100 "converted_%i"

(If you're in PowerShell, use $_.Name syntax or just run the command with cmd /c prefix.)

This converts all WAV files to 16-bit, 44100 Hz sample rate — the exact format WMP expects. The converted files get a converted_ prefix so you know what's new.

Why This Happens

Audio CDs are a 40-year-old standard. They were designed to hold uncompressed 16-bit, 44100 Hz stereo PCM audio — nothing else. Windows Media Player, when burning an audio CD, has to transcode your files to that format. But 8-bit WAV files are rare; they're usually used in old games, voice recordings on cheap hardware, or some scientific equipment. WMP's encoding pipeline simply can't handle 8-bit input — it's not designed to upsample from 8-bit to 16-bit. So instead of trying (and possibly producing garbage audio), it throws this error.

Technically, the error code NS_E_8BIT_WAVE_UNSUPPORTED is from the Windows Media SDK. It's been around since WMP 9, and Microsoft never bothered adding 8-bit support because the use case is so niche. Honestly, that's fair — converting 8-bit audio to CD quality without introducing noise is non-trivial. But it would be nice if the error message said "convert your file to 16-bit WAV" instead of just a hex code.

Less Common Variations of the Same Issue

1. WMP burns the CD but skips some tracks with no error

This happens when you have a mix of 16-bit and 8-bit files. WMP silently skips the 8-bit ones and burns the rest. Check the burn log (View > Show list > Burn list) to see which files failed. Same fix — convert them.

2. The file plays fine in WMP but fails to burn

WMP can play 8-bit WAV files just fine (it uses DirectShow for playback, which has different code paths). But burning uses a different library — the Windows Media Encoder — which refuses to touch 8-bit audio. So yes, playback success doesn't mean burning will work.

3. Error occurs with files that aren't WAV — like MP3 or WMA

If you get this error with an MP3, check if it was originally an 8-bit WAV that was re-encoded. Some audio converters will keep the 8-bit depth during transcoding. Open the file in Audacity and check the bottom-left corner: it'll show the sample format. If it says 8-bit, you've got a mislabeled file. Convert it as above.

4. Third-party CD burning software also fails

If you try using a different app (like CDBurnerXP or ImgBurn) and still get a format error, the issue is the file itself, not the software. Burner apps also expect 16-bit PCM for audio CDs. Convert first, burn second.

How to Prevent This Going Forward

If you regularly get audio files from old games, voice recorders, or surveillance systems, they're often saving in 8-bit WAV to save space. Before adding any WAV file to your burn list, right-click it in File Explorer, go to Properties > Details, and look for Audio sample size. If it shows 8 bit, don't even try to burn it directly — convert it first.

For future recordings, if you control the source device, set it to record in 16-bit WAV or 44.1 kHz MP3. That'll sidestep the issue entirely. And if you're ripping CDs yourself, always rip to 16-bit FLAC or WAV — you'll never hit this error again.

"This error tripped me up the first time too. I spent an hour thinking my CD burner was broken. Nope — just a stupid format mismatch."

That's it. Convert the files, burn your CD, and forget this error ever existed. Good luck!