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Frame rate delay

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Frame rate delay
by Helena Kristen Guenzel on Jun 27, 2009 at 9:01:05 pm

Having a frame rate delay issue with audio after sent video to color and then brought back into fcp 6. Any suggestions as to how to fix that?

thanks.

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Re: Frame rate delay
by walter biscardi on Jun 27, 2009 at 11:18:04 pm

Have never seen anything like you describe.

What's the codec / frame you're sending to Color and what's the codec you're rendering to in Color?

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

Read my Blog!

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!


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Re: Frame rate delay
by Helena Kristen Guenzel on Jun 28, 2009 at 1:38:17 am

Pre- color FCP 6 settings:
Frame size: 1440 x 1080 HD(1440 x 1080)(16:9)
Pixel aspect ratio: HD 1440 x 1080
Anamorphic: unchecked
Editing time base: 23.98
Compressor: XDCAM HD 1080p24

Audio Settings
Rate: 48 kHz
Depth: 16-bit
Config: Channel grouped
_______________________________________________________

Color settings:
Frame rate: 23.98
Resolution presets: 1920 x 1080 HD
Quicktime export codecs: Apple ProRes 422HQ

________________________________________________________

Post Color settings in FCP6
Frame size: 1920 x 1080 HDTV 1080i (16:9)
Pixel aspect ratio: square
Editing Time Base: 23.98
Anamorphic: unchecked
Compressor: Apple ProRes 422HQ

Audio Settings
Rate: 48 kHz
Depth: 16-bit
Config: Channel grouped
__________________________________________________________

The footage was shot on an XDCAM HD.

With the current settings post color, the shots are being "stretched" so now they are being cut off by the broadcast safe box. How can this all be fixed?

Also, whatever the correction is, can I apply it to jpeg's in FCP 6 as well?

Any and ALL help is GREATLY appreciated!

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Re: Frame rate delay
by walter biscardi on Jun 28, 2009 at 2:07:32 am

[Helena Kristen Guenzel] "With the current settings post color, the shots are being "stretched" so now they are being cut off by the broadcast safe box. How can this all be fixed?
"


First off, you should not be rendering in ProRes HQ. Render in ProRes for that format. ProRes HQ is only for larger format such as RED.

Try that first and see if that fixes your issue.


Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

Read my Blog!

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!


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Re: Frame rate delay
by Helena Kristen Guenzel on Jun 28, 2009 at 2:54:48 am

I changed the ProRes HQ to ProRes and it's still stretching the footage. Should I also change the frame size?

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Re: Frame rate delay
by Gerry Curtis on Jun 28, 2009 at 5:50:51 am

"First off, you should not be rendering in ProRes HQ. Render in ProRes for that format. ProRes HQ is only for larger format such as RED."


Hi Walter,

Can you explain the rationale behind this? Seems like there would still be a benefit for exporting out to 10 bit in HQ even though the camera is (I believe) 8 bit?

Thanks!
Gerry



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Re: Frame rate delay
by walter biscardi on Jun 28, 2009 at 12:42:07 pm

[Gerry Curtis] "Hi Walter,

Can you explain the rationale behind this? Seems like there would still be a benefit for exporting out to 10 bit in HQ even though the camera is (I believe) 8 bit? "


ProRes and ProRes HQ are BOTH 10bit codecs. I have no idea where people starting thinking ProRes is 8bit, but it's 10bit and has always been 10bit. There's essentially no difference between the two, however there are some scaling and artifact issues with HQ when using it with a format of 1080 or smaller. We have seen this numerous times here in the form of green artifact blocks, shots re-scaled, shots captured at half resolution instead of full frame.

If you really want to find out more about it, look up Gary Adcock and ProRes HQ in the AJA Kona and Apple Final Cut Pro forums.



Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

Read my Blog!

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!


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Re: Frame rate delay
by walter biscardi on Jun 28, 2009 at 12:33:39 pm

[Helena Kristen Guenzel] "I changed the ProRes HQ to ProRes and it's still stretching the footage. Should I also change the frame size?"

The frame size in Color only works in full raster sizes. So your anamorphic 1440x1080 is going to be stretched to the full 1920x1080 in Color. What you get back in Final Cut Pro should be a full raster 1920x1080 ProRes timeline.

We've done this exact process dozens of times with DVCPro HD material into Color. Those timelines are either 1280x1080 or 960x720 depending on whether we're in 1080 or 720 in the original footage. Then they render back out 1920x1080 or 1280x720.

You have to be sure you remain in the ProRes timeline when you send the footage back to FCP and that you set up your system for ProRes playback.



Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

Read my Blog!

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!


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Re: Frame rate delay
by Gerry Curtis on Jun 28, 2009 at 2:24:09 pm

Hi Walter,

Thanks for pointing me towards Gary Adock's article on prores and clearing up my 10 bit misunderstanding. From what I gathered his observation was that software conversion directly from 8 bit camera footage to Prores HQ caused some bad results and HQ causes playback issues on older machines but it seems to me that after some heavy grading there still might be benefits to be gained by going to HQ after rendering out of Color. It's been working nicely for me but sounds like you've had some nasty issues. Thanks for letting me hijack this thread.

Cheers,
Gerry

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