I feel a little foolish for not knowing the best way to do this, but here goes...
We usually live in the HD or SD world, and don't mix-n-match the two much... however, now I have to and I'm wondering the very best way to use HDV footage in an NTSC project to get the best results.
Footage is aquired with a Canon XLH1, and edited with Premiere 3.0 on a Matrox AXIO LE system.
No matter what I do, downconverted footage just doesn't look quite as good as footage natively shot as standard-def. I would think it would be possible for the footage to look just as good, if not better.
The options I've tried are:
1) Capturing the footage as HDV in a Premiere HDV project, then dropping it onto the timeline in a Standard-Def project and resizing with motion.
2) Capturing the footage as HD in a Premiere uncompressed 10-bit project, then dropping it onto the timeline in a Standard-Def project and resizing with motion.
3) Downconverting in camera and capturing the footage as 16:9 DV footage, then dropping it onto the standard-def timeline and using the 16:9 ratio which gives me the full-screen "center punch" that I need.
None of these options give me a result that seems quite as sharp as native standard-def, in a side-by-side test.
Before we got this AXIO system, I had an AJA system and would capture HD as SD with Machina (which allows choosing letterboxed, centerpunched, or anamorphic)... and those results seemed to be better, at least in my memory... but that is no longer an option with the Matrox system.
Anyone have any thoughts or suggestions?
T2
__________________________________
Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com
Re: HDV in a Standard-Def project by Don Greening on Jul 8, 2008 at 1:35:12 am
I'd love to help you sort this out Todd, but I don't know squat about PP. I'm a Final Cut Pro person, and I use it all the time to down convert HD to SD with great results. But alas.......
Re: HDV in a Standard-Def project by Michael Slowe on Jul 8, 2008 at 12:29:59 pm
I know it's no consolation to you but most editing systems do a great downscale job, certainly Media 100 which I use, produces a great DV picture from HD. There are various pieces of kit that do this, probably there's a box from Miranda or Convergent Design if you check their sites.
Re: HDV in a Standard-Def project by Tim Kolb on Jul 8, 2008 at 4:52:22 pm
Ah...yeah. I do HD (and HDV) footage in SD projects all the time in PPro and it works fine, so the implication that a M100 or FCP are necessary for this is irrelevant...
I do use an AJA card, which as you know Todd, does not have the RT functionality of the Matrox system, but works in uncompressed mode typically...which, quality-wise...simply kicks butt.
HOWEVER...
The tradeoff is that the way that RT functionality is achieved is through the use of specific codecs on the card so they execute in hardware...
So...we need to look at this from a troubleshooting POV...
1. What are your SD project settings? FPS? DV? MPEG? (I do find Matrox users occasionally unknowingly utilizing the MPEG codec as a render codec even when they're in DV edit mode.)
2. Is the HDV footage Canon's mysterious "24F" mode? depending on how the stuff was captured, if the SD project is not set for 24p (yes, yes...23.976), there will be some interesting temporal issues that will need to be addressed.
3. Are you viewing on the desktop? External CRT? LCD? Composite? Component? rendered? Preview? Overlay quality setting is what?
In every scenario you mention you've tried in the first post, I'm willing to bet the Matrox card is rendering the HD stuff into whatever render format you have specified for the timeline and if you have an untouched, native size clip that runs RT that isn't being scaled or re-rendered and compare that to a non-native, lossy compressed, scaled, and converted, then-rendered to some NEW lossy compressed format clip, I don't see how it could possibly be of equal quality...
There are many factors involved here and in this particular task, the Matrox card's "strengths" may actually be the first place to look for issues...
...and in the end, the subjective quality gap you see...as real as I'd guess it is...I am wondering if it may be below the perceptive threshold of most clients and may have to be an accepted reality with this edit configuration...
Re: HDV in a Standard-Def project by Jerry Alto on Jul 8, 2008 at 5:00:02 pm
Todd- We've been going from HDV to 8-bit uncompressed for our broadcast stuff for over three years now and are very happy with the results. We're FCP but it looks like your Matrox has component inputs.
Our workflow is: SD component out of the deck (letting the deck do the hardware conversion from HD to SD)>8-bit codec>edit 8-bit uncompressed>output to Betacam SP for delivery.
HTH,
Jerry
'Change is inevitable. Struggle is optional.'
G5 Dual 3GB Ram
FCP Studio 6.02
External 1 TB SATA Raid 0
Kona LH, Second system w AJA ioLA
Sony Z-1
GV-HD700
Re: HDV in a Standard-Def project by Todd Terry on Jul 9, 2008 at 9:36:30 pm
Thanks guys...
Tim, as I occasionally do I may bug you off-forum tomorrow or later in the week...
In the meantime...
[Tim Kolb]"What are your SD project settings?"
Typically I'm capturing the video in a Matrox HD 1080i 29.97 Uncompressed 10-bit Premiere project. Typically I'm trying to use the video in a Matrox SD NTSC Standard Uncompressed 10-bit Premiere project.
[Tim Kolb]"Is the HDV footage Canon's mysterious "24F" mode?
Yes. As mysterious as it may be though, I've always found "24f" to work flawlessly, and hase no perceptible difference from 24p either in SD or HD. Strangely enough, when I shoot SD with the Canon in 24f, the video captures/imports as 30fps video. But in HD it captures/imports as 24fps video (looks the same, just based on what it says under "properties").
[Tim Kolb]"Are you viewing on the desktop? External CRT? LCD?"
I view the HD footage on the desktop, I view the SD footage on desktop and on external CRT, component.
[Tim Kolb]"rendered? Preview? "
The files are rendered, ready to go...
[Tim Kolb]"In every scenario you mention you've tried in the first post, I'm willing to bet the Matrox card is rendering the HD stuff into whatever render format you have specified for the timeline and if you have an untouched, native size clip that runs RT"
Hmmmm, maybe, but I don't think so, as these files are requiring rendering.
Perhaps of note is that if I downconvert in-camera and simply capture as SD, it's still not as razor sharp as if I had natively shot SD. Perhaps that is because I'm squeezing a widescreen image into the 486x720 frame, and the "stretching" causes resolution loss.
[Tim Kolb]"I am wondering if it may be below the perceptive threshold of most clients"
That's a possiblity, but it's sure not below my perceptive threshold, and it's driving me nuts. I'm shooting with lenses that are worth a heckuva lot more than the camera itself, and get native SD footage that is razor razor sharp. Just seems that I should be able to get downconverted HD footage that was similar.
Sigh.
T2
__________________________________
Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com
Re: HDV in a Standard-Def project by Jerry Alto on Jul 10, 2008 at 2:52:50 am
Todd-
I'm squeezing a widescreen image into the 486x720 frame, and the "stretching" causes resolution loss.
That could be it. If the delivery is 4x3 we have the camera guys use the 4x3 markers on the viewfinder (Z-1) and frame for 4x3. Then when we digitize we use the decks hardware 'edgecrop' feature. It gives us very clean video AND we have HD(V) source footage for future use.
Jerry
'Change is inevitable. Struggle is optional.'
G5 Dual 3GB Ram
FCP Studio 6.02
External 1 TB SATA Raid 0
Kona LH, Second system w AJA ioLA
Sony Z-1
GV-HD700
Re: HDV in a Standard-Def project by Don Greening on Jul 10, 2008 at 5:19:53 am
[Todd Terry]"Sigh... the quest goes on."
I have a colleague using Premiere Pro CS3 on a Windows machine and he doesn't like his SD down converts either. He describes the result as being "soft." His HDV cameras are the Canon A1 and the new Sony HVR Z7U. The last time we talked he still hadn't found a solution but I'll ask him if there's been any progress next time I talk to him.
Re: HDV in a Standard-Def project by Todd Terry on Jul 11, 2008 at 7:07:51 pm
[Don Greening]"Would you be willing to share a brief overview"
Absoltuely, Don...
The problem seemed to stem from a frame-rate inconsistency....
We shoot a fair amount of standard-def with the Canon XLH1 in Canon's funky 24f mode. But it always captures and imports as 29.97 and drops fine into a 29.97 standard-def project (and the 3:2 pulldown is perfect, looks great).
HOWEVER, the HDV footage was capturing and importing as 23.976 footage. I could still drop it into a 29.97 timeline and resize it, and everything is fine... except that it looked just ever-so-barely soft to me. Almost imperceptible (Tim Kolb is probably right, the client would most likely never notice), but to me I could tell the difference.
SO... I started a new 23.976 1080 10-bit uncompressed HD project, and in that project I used Premiere motion to resize all my clips... and exported new 10-bit umcompressed AVIs of the clips. BUT I exported them as 29.97 clips, not as 23.976. You can now throw them onto a 60i standard-def timeline and they work perfectly, crystal clear. I did turn off Premiere's "frame blending," but I'm not sure if it made a difference... by that point my eyes were playing tricks on me.
I don't like having the extra hoop to jump through... but then I remember the RED users in the early days...ha.
Maybe this will be of some use to your friend...
T2
__________________________________
Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com
Re: HDV in a Standard-Def project by Don Greening on Jul 11, 2008 at 7:16:56 pm
[Todd Terry]"Maybe this will be of some use to your friend... "
Yes, absolutely it will be. I'll tell him about the workflow. He doesn't usually record in 24p or 24F with his two cameras because he's more of an event shooter but he'll definitely be able to make use of this knowledge. Thanks, Todd.