Update to MP4 Filters

The MP4 filters at www.gdcl.co.uk/mpeg4/ have been updated with the following changes:

• Support for DV, mpeg-2 video, xdcam and I420 video types in demux
• Support for 24-bit PCM, 32-bit PCM and ‘raw ‘ audio in demux
• Changes to H-264 BSF/length-prepended detection in demux
• Visual Studio 2010 support

7th May 2012