VelocityHD supports P2 MXF directly

Jim Arthurs

Jim Arthurs

Well-known member
Kaku posted some SD raw MXF clips (DVCPRO 50) and I thought I'd give it a try on my PC based VelocityHD NLE.

They work!!!

Just drag the MXF clips into the timeline and hit play... no preprocessing. Also very cool is being able to do real-time dissolve between each other and other clips made via the NLE's native codec, either compressed or uncompressed. Real-time color correction also.

Bad news? Right now support is limited to DVCPRO 50, timeline is 60i or 30p, and any 24p is not auto detected and pull down removed for a 23.976 timeline, but hey, a work in progress with promise. Also I couldn't find any metadata in the clip info, and not sure if Kaku's timecode defaults back to 00:00:00:00 with each new recording, but that's what I'm seeing.

The colors look great, BTW and such a treat not to see bleeding reds, etc. Velocity HD isn't a cheap choice (same range as Matrox's new hardware), but I think full support is just around the corner and it is yet another pc based option...

Jim Arthurs
 
Jim, that looks great! Very clean.
So now that you've seen the DVCPRO50 stuff,, what do you think it?
Doesn't Velocity HD cost like 15K ?

Is it possible to export that to a high quality wmv file for us?

thxs, Steve
 
stephen,
look at my post above yours.
The link to DVCPRO50 files and more is hyperlinked.
Steve
 
Stevet said:
stephen,
look at my post above yours.
The link to DVCPRO50 files and more is hyperlinked.
Steve
Click to expand...
Steve, I saw those and they are not MXF. They have been QT'ed. I'm looking for the raw P2 content which includes the MXF and the XML reference file (like they did for the DVCProHD stuff over the weekend).
 
stephenlnoe said:
Steve, I saw those and they are not MXF. They have been QT'ed. I'm looking for the raw P2 content which includes the MXF and the XML reference file (like they did for the DVCProHD stuff over the weekend).
Click to expand...

Hi all, I got them from Kaku's site directly (you will need to log in first) then you can drill around and find the DVCPRO 50 raw MXF's...

Yes, I'll pick the best of the bunch and try a WM9 on it later...

http://www.xtream.ne.jp/

Jim Arthurs
 
Sorry Stephen, I should of looked to see if they were re-wrapped for QT, bummer man.
Hopefully you will find the raw DVCPRO50 files on Kaku's site.

thxs
 
Thanks Jim,

It looks good.

I see some noise when I fill the 480 to fit my screen.

Is that in the original, or is it a result of the export to QT?
Also, do you remember what the settings Kaku used for this
footage. I know he was playing with the difference using gain
and detail is some of the recent footage he posted.

thxs,Steve
 
I believe that the mov has some kind of problem... looks like it has been rendered with less colors or sth... it has a strange pattern when importing a frame to photoshop and increasing levels
 
Rodrigo said:
I believe that the mov has some kind of problem... looks like it has been rendered with less colors or sth... it has a strange pattern when importing a frame to photoshop and increasing levels
Click to expand...

Yeah, I see it, it's not in the still image I exported but is in the uncompressed intermediate QT I made while removing 3:2... humm, I'll see what I can do about that later today, so ignore the file for now.

One issue is that VelocityHD is a 720 by 486 raster, while DVCPRO 50 imports at DV resolution 720 by 480... playback to NTSC is perfect, but something maybe happening when dealing with the difference in sizes... uncharted water here folks...

btw, the noise is in the original... don't know what gain settings Kaku was using on that clip.

Jim Arthurs
 
As far as gain setting, you might be able to find out by looking at this link below and match it to your raw file.

The first one in his list is said to have +12dB gain added.

FILES HERE

I posted a question to Kaku on DVInfo what the gain settings were to this file.

thxs,Steve
 
Okay, same link as above, but the QT is redone, no time to match up the audio, sorry...

BTW, I think the gain is off on the clip I converted. I know it's not the one with +12 gain. CineD gamma, default detail according to the audio.

There is some flicker in the image as well, from the overheads I suppose.

The Velocity places the 480 tall image onto the 486 raster with six duplicated lines at the bottom of the frame. If they had centered it with 3 above and 3 below it would change the field order. At least it isn't scaling the image, that would be worse...

Jim Arthurs
 
Jim Arthurs said:
BTW, I think the gain is off on the clip I converted. I know it's not the one with +12 gain. CineD gamma, default detail according to the audio.
Jim Arthurs
Click to expand...



Jim, I just posted a link to some QT and WMV files I found on DVInfo.

http://www.dvinfo.net/conf/showthread.php?p=404989&posted=1#post404989

It shows some night footage at 0dB, +6, and +12.
Unfortunately, the supporting night footage wmv and QT have a lot of compression artifacts from
the export (low data rate), but it shows that 0dB is clean, epsecially the single tiff frame.

This makes me wonder why there appeared to be noise in that flower pot on table shot? Nontheless, the evening footage (wmv & QT file) from the link above also shows good detail and no noise.

This is going to be one heck of a tool!
I can't wait to start using this thing...

Steve
 
I had a Velocity for several years before I went back to Avid.

Stable system, super clean processing, and great for integrating motion graphics into your projects.
 
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