Choppy movement from mp4

I just checked this in Windows 7, IE8. It runs smoothly for me.

Thanks for taking a look. It must be my settings as the other examples on your web site run fine on my machine. I'll keep playing with them for a while.

Thanks,

Richard

Np

I've tried a few other players now and they seem to play my test movie fine, it's just JW player that is having problems. I've also tested this on a few other computers and see the same results. I really want to go with JW player because I think it has the best fetures, but I can't until I work out this problem.

What it looks like to me is the video is playing at 25 frames per second, while it's meant to be 30. Is there a setting for this? Do I have something messed up that is forcing a 25 FPS playback?

Thanks,

Richard

@Richard - There is no variable for controlling the FPS. Can you try to re-encode at 29.97?

Thanks for the replys Ethan. I tried both 30 and 29.97 fps and they both drop frames while playing. I couldn't think of a reason why, but I also tried exporting the video as a uncompressed AVI and then converting it to mp4 (my original was WMV), but nothing changed.

My original is HD 720, is there any dimensions that could play slower? I've been converting the mp4 to 720 x 400, but I also tried the standard iphone and ipad settings in Handbrake with similar results.

While typing this, I just thought my video doesn't have sound, while all your examples do. I don't have time now, but latter I will add sound to the movie and see if that is causing the problem.

Thanks again,

Richard

What are you using to encode?

I've tried exporting from After Effects and formatFactory, but I've been mainly using HandBrake on the later tests.

Hm, ok. We use HandBrake and always had good results.

http://www.longtailvideo.com/jw/upload/bunny.mp4 for example, it was done using HandBrake, and the playback is always smooth.

We are having issues with jittering as well. We can play back an H264 file fine but when we run it through JW Player we get jittering. But, not on every desktop oddly some desktops have no issues.
All videos are played back from the same network location and we are all on Windows 7. Our files are large -500 megs to a gig because we need the quality . Any thoughts

If this happens on some desktops, but not all, I expect that the desktops on which it performs well probably have a video card, video driver and Flash version that supports hardware enabled, while on the desktops where the video is not performing, one, or more of these is not present.

Video decoding in Flash is very processor intensive if Flash cannot offload the video rendering to the GPU. A desktop video player has direct access to the video hardware, so can almost always use hardware acceleration, but our player has to deal with an additional layer (flash), which can perform better or worse depending on the machine it is installed on.