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Author Topic: D-SLR chat Julio Roberto Jedi Master Film Handler Posts: 938 From: Madrid, Madrid, Spain Registered: Oct 2008 posted 01-04-2010 04:32 PM                    quote: Joe Redifer have an Extreme III compact flash card as well. But is it really 3XTrE3M3 enough for the task? When in doubt, engage the TVRB0.  |  IP: Logged Scott Norwood Film God Posts: 8146 From: Boston, MA. USA (1774.21 miles northeast of Dallas) Registered: Jun 99 posted 01-04-2010 07:15 PM                        As a practical matter, zfs is essentially a nonissue, unless you use Solaris or FreeBSD (at least at this time). If you are going to use FAT32 on a removable "backup" disk (which I agree is probably the right decision), then I'd recommend storing the original files on something with a more robust filesystem and then regularly copying the files onto the FAT32 disk, as opposed to storing the primary copy on FAT32. I wouldn't write off tape backup completely. You can buy LTO-1 or LTO-2 drives on Ebay for under $200, and the tapes hold 100-200GB of data for about $30 apiece. It's a pretty good deal, and the tapes won't self-destruct if dropped. It does require a SCSI card, however (firewire LTO drives exist, but I have not used them). The nice thing about tape backup is that it's easy to automate (have the tape backup run at night), and it just requires changing the tapes every day (or week or month, etc.). With tape, I would recommend using GNU tar to write the tapes, since that is pretty universal across different platforms.  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-22-2010 10:07 AM                        I got to try out the 7D at a camera shop last week, brought in my own EXTREEEEEEME THREEEEEE compact flash card so I could take the results home. I am really impressed with the photographic quality of this, much better than my Rebel T1I or whatever it is called. Also tried out the 24p 1080p video. Very, very good! The "diagonal-ness" during fast pans isn't as bad as I thought it would be. You have to look for it to notice. I was able to adjust some of the exposure manually during video mode, but sometimes it seemed to want to auto-correct itself. I imagine that was just my unfamiliarity with the camera. The video quality was much better than our Panasonic HVX-200 HD video camera, but the footage is much more of a pain in the ass to edit.  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 01-22-2010 07:15 PM                     What kinds of issues does the 7D have to make its video more difficult or time consuming to edit? I assume the 7D is saving the video clips as Quicktime-based .MOV files. That's what my 5D Mark II does. Is it something about the Quicktime format itself or something else? I'm just wondering. I haven't played around the video stuff on my 5D Mark II too much up to this point (kind of waiting on that firmware update promised by Canon to add additional frame rates, etc.).  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-22-2010 07:37 PM                        It's because of the interframe H.264 codec. It will edit, but it is very slow if you go beyond simple cuts. Converting to Prores 4444 or whatever speeds up the editing to normal speeds, but the conversion itself takes plenty o' time and it is annoying to need to do it in the first place. Quicktime itself is pretty awesome since it has a huge variety of different codes. Even after the Prores conversion, it is still Quicktime.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 01-22-2010 08:15 PM                     ProRes 422 is essentially an "Every Frame is a Keyframe" codec that uses 422 pulldown. It produces great results but the files are HUGE!  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-23-2010 12:24 AM                        Actually 422 refers to the color space (4:2:2), the frame rate is irrelevant. Pulldown, in these days? I try not to even work in NTSC any more.  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 01-24-2010 12:30 AM                     I can do "every frame is a keyframe" with making a time lapse video with a bunch of still shots. Just drag them into the After Effects or Premiere time line. Actually Photoshop can do the same thing (it's animation window has some of the functions from After Effects). I'll probably try out that trick using the fancy Canon shutter release gizmo I bought a couple months ago (it has intervalometer functions) once the Spring storm season gets underway.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 01-24-2010 09:17 AM                     quote: Joe Redifer Actually 422 refers to the color space Yeah, you're right. I keep brain farting on terms. 4:2:2 is the color sampling. When making videos for ads at work we get a lot of material on DVD. I usually rip the DVD and convert to ProRes 422 in one step using MPEG Streamclip. If you can deduce which VOB file is the one that holds the scenes you want you can play it back with Streamclip and export it to 422. It's still a lossy codec but it makes your editing go a heck of a lot smoother and you get better results at the end.  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-24-2010 09:31 AM                        Yeah, MPEG Streamclip is awesome, except that it doesn't play very well with OSX 10.6. I usually go all out and convert to ProRes 4444. But from DVD 422 is probably more than fine. I should do some tests and see if I can get away with a smaller codec. 4444 isn't as "huge" as I once thought it would be, but it sure ain't small (that's what she said).  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 01-24-2010 03:00 PM                     When I upgraded to 10.6 it I found my MPEG-2 codec was deleted. I thought I was going to have to reinstall but, at the last minute, I remembered, "Hey! I have Time Macnine!" I checked my T.M. backup and there it was! The MPEG-2 codec I needed! I just clicked "Restore" and I was back in business. What else about 10.6 doesn't want to play nice with MPEG Streamclip? That's the only trouble I had. Once I figured that out I was okay again. I know ProRes 422 isn't a small codec but, at home, I have plenty of storage. More than 2 TB total. At work we have 3 X 500 GB drives just for storing junk and I delete all unclaimed material off them at the end of ever term. I know ProRes 422 takes a lot of time to "conform" the data the first time you convert to it but, once it is done, everything else goes lickey-split. But even then, the machines at work are Quad-Cores and, at home, I have an 8-core ("Harpertown") Mac Pro. Conversion speed isn't a factor, especially when you have a fast machine running 10.6. Even if you don't have 64-bit clean software it still helps because you can access more memory.  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-24-2010 05:18 PM                        Hmmmm.... ProRes 422HQ doesn't seem to take up any less space than ProRes 4444. ProRes 422 (non-HQ) isn't much bigger than the video files captured by the camera. As was the case with VHS, the "HQ" makes all the difference in the world. MPEG Streamclip doesn't work well with DVDs since upgrading to 10.6. I can't rip anything. Must use Windows for that. Anyway, here is a frame grab from the 7D video. The "diagonal-ness" on the quick pans isn't nearly as bad as some have made it out to be. You have to be moving pretty fast to get the effect.  |  IP: Logged Bobby Henderson "Ask me about Trajan." Posts: 10973 From: Lawton, OK, USA Registered: Apr 2001 posted 01-24-2010 07:50 PM                     It's a lot easier to see the diagonal artifact issues caused by the rolling shutter in the Canon EOS 7D and 5D Mark II by looking at video clips in motion. Here is an interesting comparison of the rolling shutter effect between the 7D and 5D Mark II. I think the diagonal effect is a little more pronounced on the 5D Mark II since its imaging sensor is so much larger than that of the 7D. In certain cases I could see the slanted effect actually being useful to add "energy" to certain shots. But the effect is pretty noticeable and one would need to take steps to avoid having it show up in the footage.  |  IP: Logged Joe Redifer You need a beating today Posts: 12859 From: Denver, Colorado Registered: May 99 posted 01-24-2010 07:57 PM                        There is next to no motion blur in those clips so the effect is easier to see. But I don't foresee myself doing too many whip pans. Here is the Quicktime (downscaled and compressed) of my pan. Noticeable, but not crazy-distracting.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 01-24-2010 08:39 PM                     Unencrypted DVDs I can play just by using Streamclip. Encrypted DVDs I can use Mac the Ripper to pull out the VOB I need then play or transcode to ProRes 422 with Streamclip. When I first installed 10.6 I had trouble. I lost my MPEG-2 playback codec. The installer deleted it. I had to use Time Machine to restore it from previous backups. After that, I have had no trouble at all ripping DVDs. Look in /MacintoshHD/Library/Quicktime/ for the file "QuickTimeMPEG2.component". If you don't have it, restore it from prior backups or reinstall from the installation disks. If you don't want to go through that trouble I can e-mail the file to you. It's only 672 MB on disk. It can be zipped down to less than 300 MB. If you need the component I can send it to you. If that's not what the problem is, I don't know why yours doesn't work. Mine does.  |  IP: Logged

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