Why does my HPX Shoot 720P/60P and 720P/30P as 720P/24P?

[Moto Guzzi Bruce]

I have been using my HPX 170 occasionally for the last year, but always shooting in 720P/24PN. I never tried any of the other 12 modes until last week.

Finally, hoping to get slow motion video, I tried to record in 720P/60P. But I noticed that when I put the camera in the MCR Mode to view the video clips in the camera, when I view the thumbnails of the clips I can see that they were NOT recorded in 720P/60P, but rather 720P/24P (as it shows in the bottom of that window - next to the DVCPROHD icon).

Just to experiment, I tried to record in 720P/30P to see if I had the same problem - same result - it recorded in 720P/24P.

Strange thing though, when I Log and Transfer the clips into Final Cut Pro, I can see in the Browser Bin that these two clips I recorded in 720P/60P and 720P/30P, although they actually recorded in 23.98 fps (so 24P right?) Final Cut Pro assigns them a Compressor of DVCPRO HD 720p60, so maybe FCP knows somehow these were originally intended to be recorded at a different frame rate than the resulting 23.98fps.

I have since checked all of the 11 other record modes (from 1080i/60i down to 480i/24PA) and all seem to be working properly.

Hope you guys are not as confused as I am.

Do you think the camera was like this brand new and I missed it? I'm not a professional like alot of you guys so I didn't even think to check that all the record modes were working properly when I took it out of the box.

I don't think I dropped the camera or did anything to physically abuse the camera, and even if I did, why would only two record modes be affected?

Is this camera still in warranty? Does a warranty cover something like this?

Any help would be much appreciated.

Bruce

 

[BobBlankemeier]

Hey did you put the camera in film mode or video mode? To overcrank the camera you have to be in 720 24pN and in film mode. Then you can go to frame rate and change to your desired speed.

 

[DGW]

sounds like you changed your record format to 30p and 60p but were not using the DEFAULT framerate in the scene file. In other words, your framerate was still set at 24fps. When you select a new record format, be sure DEFAULT is set in the scene file, then when you're choosing 30p the framerate will be 30fps, likewise for 60fps.

 

[DGW]

To overcrank the camera you have to be in 720 24pN and in film mode. Then you can go to frame rate and change to your desired speed.

You just have to be in 720p mode to over/undercrank. Not necessarily pN.

 

[David Jimerson]

Well, I think it's more likely that the Record Format was 720/24pN and the Frame Rate in the Scene File was 30 or 60. So yes, it would have been recorded as 23.976, and playback would be in slo-mo.

FCP recognizes the compression as 720/60p because that's the base for the DVCPRO HD codec (in the 60 hz "NTSC" world). It wasn't actually until the HVX200 and P2 came along that DVCPRO HD 720p was able to recorded in a native stream, instead of in a 60p stream.