Yes, there are several software that can reconvert mp4 h264. I would first try MP4Cam2AVI and see if you can import the avi in Pinnacle. Or else convert to avi(with mjpeg, huffyuv, dv or lagarith video) or mpeg2 using WInFF, Format Factory, Super, Xvid4PSP, avidemux, etc.
But have you tried latest Pinnacle? or maybe there is no demo/trial.
Or try other editors like vegas movie studio.
I found a way to make Pinnacle Studio 10 import MP4 movies (encoded with avc1 H.264/MPEG4 as reported by GSpot).
My Sony T90 camera creates High Def videos and I needed Pinnacle to read them.
1. Download and install the Pinnacle H264 Codec => files/12472894...C.v2.0.527.rar
NAV thinks it's a virus, but apparently not; so you may have to disable it for a while.
2. Run the normal install Pinnacle.H264.CODEC.v2.0.527.exe
3. Now the problem is, the installer forgot to copy the codec into the programs directory:
copy "C:\Program Files\Pinnacle\Shared Files\Filter\H264Codec.ax" "C:\Program Files\Pinnacle\Studio 10\programs"
That's it. Now start Studio 10 and browse for an MP4 H264 video file; the thumbnail should now populate and be able to be dragged to the timeline.
- Steve