How can I tell what framerate a .3gp video was encoded at?

[Chainmax]

I am trying to filter and improve upon some extremely crappy QCIF videos. They are supposed to be recorded at 15fps, but both ffdshow and DirectShowSource report it as being 25ps, whereas I read that the cellphone used records at different framerates according to the conditions it is used in. Is there any way to know the exact one used in this case?

[Chainmax]

Anyone?

[setarip_old]

Hi!

Load it into either Quicktime Professional or VLC...

[Chainmax]

http://img89.imageshack.us/img89/1356/sttngslw3.png (http://imageshack.us)

Doesn't make any sense. :confused:

[neuron2]

Just step through the frames in a motion sequence and count the new pictures (N) and total pictures (T). Then the base frame rate is:

rate = N/T * R

where R is the declared frame rate.

Please do not bump threads after less than a day. You could get a rule 11 strike for it ("no use" post).

[Chainmax]

That will be difficult due to the extremely bad quality of the video, but I'll give it a shot. Thanks for the suggestion.

And sorry for bumping so early, I only did it because it had already fallen off the front page.

[neuron2]

And sorry for bumping so early, I only did it because it had already fallen off the front page. That's not a valid reason. If everyone tried to keep their posts on the front page, we'd have a horrible mess.

I don't understand why you think the described process is difficult. Are you unable to discern new pictures? Certainly you can do it better than any algorithm.

[Chainmax]

When the video is very low resolution (QCIF), is mostly static and has too much artifacting, it's not easy to determine the framerate.

[Ranguvar]

MediaInfo should work.

[neuron2]

If you don't care about the "base" frame rate and just want to know the playback rate, then just divide the number of frames by the running time.

[bond]

run mp4info from mpeg4ip over the file