Jump cut in video playback/recording

[Jukebag]

Does anyone know what causes a video to suddenly "jump cut" (can't find a better word) as though the camera was stopped during recording and resumed recording half way through a scene, even though no pressing of the stop button was ever made. I have noticed this a few times (though not very often) not only with modern HD video cameras but also with Hi8 tape camcorders, so I can't imagine this being caused by the tape. It's often just a split second or a couple of seconds of a cut. Using an SD card as an example, if this was the result of pressing the stop button suddenly then quickly pressing the rec button, then the recording would just create a separate file as it recognises it as a separate recording, but this happens during the same recording.

Anyone experienced this?

Edited by Jukebag on Thursday 28th September 11:42

Edited by Jukebag on Thursday 28th September 11:51

[Craikeybaby]

Could it be the recording reaching the 4GB file size limit for the FAT32 format?

[Disastrous]

On SD recording, the most obvious answer would be too slow a card.

If this is something you are experiencing with tape as well, my guess would be that it’s a playback issue related to ram/drive access speed on the edit machine and you’re experiencing drop frames.

I’d try converting to proxy media or on a different machine to determine whether the error is embedded in the recorded material or just in playback.

[Jukebag]

Thanks for the advice. I will took into the playback through the camera itself to determine whether it's the file transfer or a recording issue.

I suspect that this happens during recording, so could a mechanism issue; in the case of the tape it could be the tape stops suddenly for a split second then resumes (maybe jamming) despite the recording light/button being in operation.

[Derek Smith]

I had this problem with tape. I concluded it was something to do with the firewire connection, although one I was never able to eliminate. I noticed that if I downloaded it twice, the 'gap' didn't happen in the same place.

I've not noticed any identical problem on digital video, and I've done a fair few of those over the years. However, I would ensure that, as a previous poster has suggested, the memory card is of sufficient speed. I have a 4K video camera and there were problems with my slow card. Once upgraded to a 3 level card, everything was fine.