Convert video h264 to mp4 and play in MediaElement

Peter

4y2.2k

Hello.

Im using ffmpeg.exe to convert video in h264 format to mp4 video file. After converting mp4 file not plaing in WPF MediaElement control, and any Windows player. I installed K_Lite codec package.

I'm running query: "ffmpeg -i C:\video.h264 c:\video.mp4" in System.Diagnostics.Process in WPF apllication in 4.0 framework.

Why MediaElement not plaing mp4 video? Video in other formats (wmv, mpg...) plaing ok.

1 Reply

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Jayraj Chhaya1y ago
Hello,
Try below.
Your MP4 doesn’t play because you just wrapped raw H.264 into MP4, which WPF MediaElement (Windows Media Foundation) can’t handle.

Fix: re-encode properly:
```
ffmpeg -i C:\video.h264 -c:v libx264 -pix_fmt yuv420p -c:a aac -movflags +faststart C:\video.mp4
```
Or convert to WMV (fully supported):
```
ffmpeg -i C:\video.h264 -c:v wmv2 -c:a wmav2 C:\video.wmv
```
MediaElement plays WMV reliably. For MP4/H.264, re-encode or use LibVLCSharp/FFME.
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