When This Error Hits
You're encoding a video file—say, an AVI from a security camera or a screen capture—using Windows Media Encoder 9 Series or Expression Encoder 4. You've set the bitrate to something like 10 Mbps for a 1080p clip, hit encode, and bam: NS_E_INVALID_VIDEO_BITRATE (0XC00D1BBF). The message just says "The video bit rate setting is not valid." No hint about why.
I've seen this most often when someone tries to push bitrates beyond what the codec can handle, especially with older codecs like Windows Media Video 9 (WMV3) or VC-1. It also shows up when the bitrate is below the codec's minimum for the selected resolution. The trigger is always the same: a mismatch between the bitrate you entered and the codec's valid range.
Root Cause
Windows Media Encoder and Expression Encoder use codecs with hard limits on video bitrate. WMV9, for example, supports a maximum bitrate of 40 Mbps at 1080p, but only under certain profile settings (like Main Profile). If you crank it to 50 Mbps, or if you drop it to 1 Mbps for a 4K video, the encoder will throw this error. The codec's bitrate range depends on the profile (Simple, Main, Advanced), resolution, and frame rate.
Another common cause: you've set the bitrate in the UI but the codec is being forced into a different profile by the container or preset. For instance, a profile that caps bitrate at 10 Mbps will reject anything above that. The encoder doesn't tell you this—it just spits out the error.
Fix It in 5 Steps
- Open your encoding profile in Windows Media Encoder or Expression Encoder. Go to Session Properties > Compression for WME, or Presets > Edit for Expression Encoder.
- Check the codec being used. Look under Video Codec—it'll say Windows Media Video 9, VC-1, or similar. Note the profile (Simple, Main, Advanced).
- Look up the bitrate range for that codec and profile. Here's a cheat sheet:
For resolutions above 1080p, halve those max numbers—4K at 60 fps kills bitrate limits fast.Codec Profile Min Bitrate Max Bitrate (1080p) WMV9 Simple 10 Kbps 10 Mbps WMV9 Main 10 Kbps 40 Mbps VC-1 Advanced 10 Kbps 135 Mbps - Adjust your bitrate to fall within the safe zone. If you're targeting 1080p, stay under 20 Mbps for WMV9 Main to avoid edge cases. Set it via Video Bit Rate (Kbps) field. For CBR (constant bitrate), use a value 10% below the max to leave room for overhead.
- Re-encode the file. Apply the change and hit start. If it still fails, check your profile: some presets lock to Simple profile without showing it. Manually switch to Main or Advanced in the Profile dropdown.
If It Still Fails
Check your source video. A damaged header or incorrect frame rate (like a variable frame rate source) can trip the bitrate validation. Transcode the source to a clean intermediate format first—use HandBrake to convert to an MP4 with Constant Frame Rate at 29.97 fps. Then try encoding again with the bitrate you set.
Also verify the encoding tool version. Windows Media Encoder 9 on Windows 7 or 10 has known issues with high bitrates due to OS changes. Expression Encoder 4 SP2 is more reliable. If you're stuck on WME, cap your bitrate at 15 Mbps max for any resolution—that's the sweet spot where it won't choke.
Pro tip: Always test with a 10-second clip before encoding a long video. It saves hours of debugging.