Why is rendering XDCAM 422 as slow as Molasses in a SD timeline.

[Robb Harriss]

You’re learning the lesson I learned. Get everything in a timeline to be the same format Before editing. The whole idea of multiple formats in the same timeline is a marketing sop. Sure it does it, and rather well. But it’s a time killer and most editors, including myself, are extremely time conscious in one way or another. I want to go fast. I want the system to keep up with me. I don’t want to be waiting for it.

Non-linear: all the time and nothing but.

[Robb Harriss]

our remedy is to take footage in via the Kona card in HDSDI and scale it to ProRes in real time.

Non-linear: all the time and nothing but.

[Steve Connor]

I’ve just tried dropping some XDCamHD 422 clips into a PAL SD timeline on my system and they play back in real time well enough, not at full res, but more than enough to work with on a mixed format timeline, then a 20 second clip takes about 20 seconds to render. I have an older 8 core Mac, could you let us have more details on your RT settings, source material framerates etc

Steve Connor
Adrenalin Television

Have you tried “Search Posts”? Enlightenment may be there.

[Rafael Amador]

Do you need to deliver in XDCAM?
If not just change the sequence codec to Prores.
rafael

http://www.nagavideo.com

[Peter Corbett]

The video will just end up as a DVD and MP4 for web. But because 30% of the program is SD, I can’t uprez to 1080i for editing. I tried dropping a stack of AVC-Intra P2 1080 files on the same SD timeline and they rendered 10x quicker than the XDCAM 422’s.

I have ProRes 422 (HQ) set as the compressor and “normal” for rendering. I think having to render downconversions from long-GOP is what’s doing the time damage. I agree with Robb, it’s better to preconvert to SD then edit. But this is hardly productive. I think camera guys are more amoured with XDCAMHD than editors.

Peter Corbett
Powerhouse Productions
http://www.php.com.au

[Arnie Schlissel]

[Peter Corbett] “I tried dropping a stack of AVC-Intra P2 1080 files on the same SD timeline and they rendered 10x quicker than the XDCAM 422’s.”

That’s because the AVC-I is not long-GOP. It’s recorded in camera as whole frames. The XDCam is recorded in camera as 12 or 15 frame groups, and those groups need to be decoded into individual, whole frames.

Arnie
Post production is not an afterthought!
https://www.arniepix.com/

[Arnie Schlissel]

[Robb Harriss] “our remedy is to take footage in via the Kona card in HDSDI and scale it to ProRes in real time.”

[Robb Harriss] “Non-linear: all the time and nothing but.”

I don’t know, Robb… That solution sounds very, umm… linear to me…

(wink, wink, nudge, nudge)

Arnie
Post production is not an afterthought!
https://www.arniepix.com/

[Mark Maness]

BINGO!

Arnie hit it on the nose! That’s why when your doing projects with multiple media that you really really need to down-convert your footage to match the rest for the edit.

Hardware conversion is a thousand times better than software conversion. This is an area that most people overlook when purchasing hardware, and what you are seeing here is usually the result of that decision making process.

This is why I have always said that cutting corners sometimes can bite you in the butt!

_______________________________

Wayne Carey
Schazam Productions
https://web.mac.com/schazamproductions
schazamproductions@mac.com

[Rafael Amador]

[Peter Corbett] “The video will just end up as a DVD and MP4 for web. But because 30% of the program is SD, I can’t uprez to 1080i for editing. I tried dropping a stack of AVC-Intra P2 1080 files on the same SD timeline and they rendered 10x quicker than the XDCAM 422’s.

I have ProRes 422 (HQ) set as the compressor and “normal” for rendering. I think having to render downconversions from long-GOP is what’s doing the time damage. I agree with Robb, it’s better to preconvert to SD then edit. But this is hardly productive. I think camera guys are more amoured with XDCAMHD than editors.
“
I work in a MBP with XDCAM 422 (some times 220Mbps, from the NANO).
No problems.
Any thing, but rendering to XDCAM.
XDCAM is an acquisition format. For production is probably one of the slowest available option.
And you don’t need it at all.
Set Prores in you sequence and render.
rafael

http://www.nagavideo.com

[Peter Corbett]

I’m not having issues in a HD project with XDCAM 422. It’s using XD clips in a SD timeline that causes a meltdown. The DOP we used on this job has a PDW700, but I’d be cautious about buying one myself. That said, the pictures in 1080 from the camera look incredibly sharp.

Peter Corbett
Powerhouse Productions
http://www.php.com.au