Forums › Compression Techniques › Compression Confusion – 1080p to 720p
Compression Confusion – 1080p to 720p
Eric Holzapfel
March 6, 2012 at 9:15 pmHello All,
I have been looking all over the forum, and have not quite found out
a way to do this, or at least a way that works.I have some video that I shot with an HVX200 – format 720p30 (native frame size – 960×720)
and some video shot with a Canon 5D – 1920×1080. I need to edit both of these video formats
in the same timeline (oops I forgot to switch the Canon to 30 fps!).My initial thought was to convert the Canon footage to Apple ProRes using Grinder, and
then use Apple Compressor to down-convert the footage to 720p with same frame dimensions
as DVCPRO HD – compressor did not change the frame size – it remains at 1080.I also created a proxy using grinder (1280×720), and just overrode FCP message about matching the
sequence to the clip settings.What is a better way – or at least a workflow for this? I do not have a capture card, AJA, Matrox, etc.
Thanks,
Eric
Charybdis and Scylla ProductionsEquipment – Using FCP 7 along with FCS 2 – Compressor 4
Mac OS Lion
Mac Pro workstation dual 2.8 with 16GB memoryFinal Cut Pro, Adobe After Effects, Photoshop
Russ Haskell
March 7, 2012 at 1:07 pmYou’re right that you should be converting the Canon’s h.264 files to Pro Res for editing. The preferred way to do this is via Log & Transfer within FCP. There is a helpful tapeless workflow tutorial by Shane Ross, which should come up from a search of these boards. If you don’t have the original intact card structure, Compressor can certainly do the Pro Res transcode, but it’s not very fast. In situations like that, I tend to use MPEG Streamclip which is faster.
Compressor should do a pretty good jogb scaling the 1080 clips to 720. Go into the frames controls tab and set scaling to Best. How did you try to resize…in the Geometry tab?
Russ
Eric Holzapfel
March 9, 2012 at 1:16 amHello Russ,
It is nice I am on the right track. I did see the FCP log and transfer info by Shane Ross (Creative Cow, thank you very much!).Using Compressor 4
I selected the DVCPRO HD codec, 720p60/30/24.
My geometry settings are: 960×720 “Custom (16×9)
I had the frames control set to :
Resize Filter: Better (Linear Filter)
Output fields: “Same as Source”
Deinterlace: Better (motion adaptive)
Rate conversion: Better (Motion compensated)Should I set the rate conversion to “Best”?
Thank you for the information
Eric
eholz1Final Cut Pro, Adobe After Effects, Photoshop
Russ Haskell
March 9, 2012 at 2:59 amIMO, setting the resize setting to Best is a reasonable choice and shouldn’t bog down the process. It didn’t register with me that you were also changing frame rate; Better is probably fine. Too many Best settings combined could produce extraordinary processing times.
Russ
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