Unlocking the "secret frame" rates on the HVX.

W

Will-the other Will

Member
I went to the NAB and chatted with a fellow there who was helping demonstrate the camera's multi frame rate capabilities (race car set-up, cars kept flying off the track, etc. This other guy, a little older, kept getting pissed about those cars, too.) Anyhow, he told me that you could unlock more frame rates, anything from 4fps to 60. Is this old news and already covered? I've searched through some posts, but can't seem to find it.

I was impressed with the camera and have one coming this week. I'm in San Diego. If anyone else in San Diego area has this camera and wants to do a multi-camera shoot, let me know and I'll lend them mine--as long as the reverse is true, and they leave something for collateral...like a car or a kidney or something.
 
It old news. Actually you can go down to 2fps. Search arround for post by Barry about this, he gave a very nice clean info about this
 
I compiled a nice little tutorial on how to do this. I just don't have it handy. Send me a PM and I'll try to post it tomorrow.

[UPDATE - I posted it below]
 
Last edited:
Unlock Hidden Frame Rates On The HVX200:

Unlock Hidden Frame Rates On The HVX200:

Unlock Hidden Frame Rates On The HVX200:​

[1] Get a scene file text file on an SD card, usually by going into menu 8, CARD FUNCTIONS, and saving scene files to your SD card.

[2] Open the scene file text file in the PRIVATE\MEIGROUP\PAVCN\SBG\P2SD directory, called SCENE1.TXT (or scene2.txt, scene3.txt, or scene4.txt) using a text editor like Windows Notepad.

[3] Look for the next-to-last item in the scene file (this is the item you will modify). Here's what a sample scene file text file looks like:

00005000: 8 ; DETAIL LEVEL: 0
00005001: 8 ; V DETAIL LEVEL: 0
00005002: 8 ; DETAIL CORING : 0
00005003: 8 ; CHROMA LEVEL: 0
00005004: 8 ; CHROMA PHASE: 0
00005005: 8 ; COLOR TEMP: 0
00005006: 16 ; MASTER PED: 0
00005007: 8 ; A.IRIS LEVEL: 0
00005008: 1 ; NEWS GAMMA: OFF
00005009: 0 ; GAMMA : HD NORM
0000500A: 0 ; KNEE: AUTO
0000500B: 0 ; MATRIX: NORM
0000500C: 1 ; SKIN TONE DTL : OFF
0000500D: 0 ; V DETAIL FREQ : THIN
0000500E: 0 ; OPERATION TYPE: VIDEO CAM
[FONT=&quot]0000500F: 0 ; FRAME RATE: DEFAULT [/FONT] <--- [FONT=&quot]This line![/FONT]


00005010: BE026801 ; SYNCRO SCAN :

You can ignore everything after the semicolon; the semicolon indicates that it's a "comment" and will have no bearing on anything else (so, in this example, the part that says "; FRAME RATE: DEFAULT " is useless, it affects nothing, it's just there for human-readable description).

So the relevant part is:
0000500F: 0

The only thing you would want to change is that last number (in this case, "0"). To get different frame rates, use one of the following numbers:

0 = DEFAULT
1 = 2fps
2 = 3fps
3 =4fps
4 = 6fps
5 = 8fps
6 = 10fps
7 = 12fps
8 = 14fps
9 = 16fps
10 = 18fps
11 = 20fps
12 = 22fps
13 = 23fps
14 = 24fps
16 = 26fps
17 = 27fps
18 = 28fps
19 = 30fps
20 = 32fps
21 = 34fps
22 = 36fps
23 = 38fps
24 = 40fps
25 = 42fps
26 = 44fps
27 = 46fps
28 = 48fps
29 = 50fps
30 = 52fps
32 = 54fps
33 = 56fps
34 = 58fps
[FONT=&quot]35 = 60fps[/FONT]
[FONT=&quot]36+ = repeat of sequence from 50fps to 60fps[/FONT]

NOTE: Do NOT set past 34 or there may be problems!

So, for example, if you wanted to get a frame rate of 2 FPS, your modified line would look like this:

0000500F: 1 ; FRAME RATE: DEFAULT

And if you wanted 44 fps, it would look like this:

0000500F: 26 ; FRAME RATE: DEFAULT

(35 just gives you a standard frame rate of 60fps. 36 gives you 50fps, 37 gives you 52fps. So, it likely just repeats 50-60 for all fields set higher than 36. Regardless, there have been problems reported when trying to set fields at 35 or higher.)

[4] Save your modified text file back onto your SD card

[5] Put the SD card back in the camera, go to CARD FUNCTIONS, and load the scene files into the camera.

Now, when you go to the appropriate scene file, you'll see the new frame rate there. But be aware, the only way to assign these "nonstandard" frame rates is through the SD card. If you use the menu to try to change the frame rate, you'll lose it – it will immediately jump to 60 and then allow only the normal rates to be selected. You'd have to re-load the scene file from the SD card in order to re-establish your "nonstandard" frame rate.



Experiment at your own risk!
 
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