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Old March 23rd, 2014, 01:38 PM   #1
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FS100 slow motion (60fps)

Is anyone out there using their Odyssey7Q with the FS100, and that if they have successfully been able to record over cranked 60 fps out of the camera.

I am using an Atomos HDMI to SDI converter to remove 3:2 out of fs100' 1080i signal. I am trying to figure out what camera settings I should configure so I can record 60fps (at 23.98p) into odyssey. As I understand the Odyssey' project frame rate setting has to be set to 23.98p, correct? I will be recording to DPX sequences and DNxHD when it becomes available.

Thanks for your help.
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Old March 23rd, 2014, 02:45 PM   #2
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Re: FS100 slow motion (60fps)

Dear Amir,

You will need to setup your FS100 to output 1080p59.94 (60) over the HDMI output.

You will need to use your converted, but 3:2 pull down removal is not needed.

The Odyssey7Q must be in DPX mode.

Please call me if you need more assistance.

Respectfully,
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Old March 24th, 2014, 04:52 PM   #3
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Re: FS100 slow motion (60fps)

Thanks Dan.
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Old March 25th, 2014, 01:24 AM   #4
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Re: FS100 slow motion (60fps)

Quote:
Originally Posted by Dan Keaton View Post
Dear Amir,

You will need to setup your FS100 to output 1080p59.94 (60) over the HDMI output.

You will need to use your converted, but 3:2 pull down removal is not needed.

The Odyssey7Q must be in DPX mode.

Please call me if you need more assistance.

Respectfully,
Hi Dan,

I followed your instructions above:

I set the output of the camera to 1080p (other option is 1080i which sends out 23.98p with 3:2),

I set the camera' recording format to 1080p 60 (59.94),

I then sent the HDMI out of the camera to Atomos converter (H2S) and turned its pulldown removal function off (its off by default everytime you power cycle the converter), and

I set the 7Q's project rate to 23.98p with DPX as the selected recording format.


What I see on the monitor is a picture from the camera but with crazy blanking type flicker with horizontal bands traveling vertically, and the 7Q's input shows 1080p 29.97.

I tried setting the 7Q to both "Sony other" and "other" options, but same result.

Then I tried sending a 1080p 59.94 SMPTE bars signal out the of the Atomos converter to 7Q, but same results, the monitor shows the source input on the top menu bar as 1080p 29.97 with same flicker with horizontal bands of picture traveling vertically.

I also tried other settings on FS100, like setting the record mode to S&Q (1080p 60 at 23.98p playback rate), etc, setting the 7Qs project frame rate differently but nothing worked.
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Old March 25th, 2014, 08:00 AM   #5
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Re: FS100 slow motion (60fps)

Dear Amir,

We do not have a Sony FS100 in our lab (as far as I know).

The problem may be in the format of the signal being fed into the Odyssey7Q.

Typically 1080p59.94 signals are YCbCr 4:2:2 as opposed to RGB 4:4:4. This is true for cameras such as the Sony F3 and others. For lower frame rates these cameras do output RGB 4:4:4.

The reason for this is that 1080p59.94, in RGB 4:4:4 will not fit into the HD-SDI 3G bandwidth or SMPTE Standard.

Thus, this may be the reason that it is not working.

I checked the Atomos website and I could not determine if their converter will work in your specific situation at 1080p59.94.


Here are some other items to check:

Is the HDMI cable (from the FS100 to the Atomos Converter) a good quality HDMI cable that supports 1080p60?

Is the HD-SDI cable from the Atomos Converter to the Odyssey7Q a true HD-SDI 3G Rated cable with 3G rated BNC connectors?

The Odyssey7Q fully supports recording 1080p59.94 and 1080p60 (YCbCr 4:2:2) over the HD-SDI 3G inputs, or HD-SDI 1.5G Dual Link.


Respectfully,
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Old March 25th, 2014, 08:11 PM   #6
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Re: FS100 slow motion (60fps)

Hi Dan,

Thanks for the quick reply.

Lets first get the pre-requisite 101s out of the way. Yes both HDMI and SDI cables are extremely high quality (not consumer high quality Monster cable garbage stuff but professional grade). HDMI is rated for 1080p 60. HDSDI cables/connectors are 3G rated, even any adapters (90 degree etc) if I end up using are 3G rated.

And yes the Atomos' HDMI to SDI converter (called H2S) is 3G rated and does support 1080p60/59.94 format, both in an out. I could not copy a link to their user guide with product specifications on page 11, so I'll email you the PDF. This converter also works as a test signal generator and generates 3G HD SDI test signal (SMPTE bars) at pretty much all frame rates, so I sent a 1080p60/59.94 signal to 7Q and saw the same result as I described in the first post of this thread.

What I'll do next is send this Atomos 1080p60 test signal to my Sony BVM-F250 and/or to older L230 monitor to start trouble shooting this and in order to make sure that the sources are correct.

I have always understood that FS100 would only "negotiate" RGB signal if the connected device is asking for it, otherwise it would send a YCbCr 4:2:2 out of its HDMI. Maybe my information is incorrect. I'll also directly connect the camera via HDMI to the Sony F250 (has an HDMI input) to see what the monitor sees the signal as, and if it indicates the type of signal on the display.

One scenario could be where the Atomos converter is asking FS100 to give it an RGB 444 signal but then even if thats the case, the converter cannot send this RGB signal out its 3G HD-SDI connectors so it has to convert it to YCbCr 4:2:2 for it to be of any use (monitoring or recording).

Thats what happens when you have to introduce more devices in the chain :) Frustrating to say the least.
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