Graphedit generates MP4 file with very large size

Question

I have created a graph using Graphedit utility for live streaming video capture. I used GDCL MP4 mux dll from gdcl.co.uk/mpeg4. It generated .mp4 file but of very large size. If i continue playing for few seconds it generates file with size in GB, say 1.3 GB. I am using following steps to generate the graph

   Capture--> GDCL Mpeg-4 Multiplexor --> MP4 Writer

Can anyone please help me why does this happen?

Thanks in advance.

Answer 1

A multiplexer is used to multiplex different streams into a single file. Most of the time this will be an audio and a video stream. But a multiplexer does not encode audio or video. If you need h.264 video, you need to add a h264 encoder to the graph. For example you can use ffdshow for that.

See also wikipedia for the mp4 file format, H.264 video compression format, and other parts of mpeg4.