I was curious if anyone had any experiences with .mp4 vs .m4v file extensions. I had been using Handbrake v0.9.3 to encode my DVD collection into MPEG-4’s. I was using the Normal/Basic presets and using the .mp4 container. When Handbrake v0.9.4 came out the MPEG-4 file extension defaulted to .m4v for the Normal preset.
When playing the older .mp4’s I noticed “stuttering” in the video. I didn’t have large time frames of video/audio sync problems as others are complaining about but it is noticeable and annoying. When playing the new .m4v’s it appears to be smooth and a great viewing experience. I originally thought they just fixed or tweaked some things in Handbrake v0.9.4 and I was going to have to live with the .mp4 problems. However, I tried changing the file extension to .m4v and it seems the “stuttering” problem is fixed. I would have thought that changing the file extension without re-encoding the video would make no difference, but it appears to.
The only issue I have now is that the .m4v’s won’t fast-forward or rewind, so now I have to pick my poison. Has anyone else had this experience or am I just seeing things after staring at these videos for too long?