Ah, sorry -- you are correct, I meant 1880! Definitely on a 5d2. Will edit the above post...
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#52
General Development / Re: uncompressed 14-bit RAW video recording
May 18, 2013, 10:01:44 PM
Hi-
Wanted to throw in a quick Mac workflow tip I've been using. I haven't seen this mentioned yet; apologies if it has and I missed it:
As you have probably experienced, the raw .dng files produced by raw2dng don't display in Finder/Quicklook, Preview, FCP/FCPX, Motion et al. The data is there, but the images show up black/blank. Ater Effects and Photoshop will take them, but if you'd like to use them in other apps, I've discovered that Adobe's DNG Converter utility fixes the problem *without* needing to convert everything to a tiff sequence and step away from raw. Here's the download link:
http://www.adobe.com/support/downloads/detail.jsp?ftpID=5568
After installing the app, just select all the .dng files for a given clip right in finder and open them. This will launch DNG Converter. Hit "Convert" and you'll get a new set of .dng files in the same folder that will work fine in the above applications. You now can use Quicklook/spacebar in Finder on these new files as usual. If you have Motion, you can drag them all right into the layers palette and you've got a raw image sequence. Color correct and export as ProRes.
Note that these are still raw frames and the original image data *appears* unaltered. I haven't examined in detail so those more knowledeable in this area should take a closer look. However I think DNG Converter is just re-wrapping them in a more Mac-friendly way.
Thanks!
Wanted to throw in a quick Mac workflow tip I've been using. I haven't seen this mentioned yet; apologies if it has and I missed it:
As you have probably experienced, the raw .dng files produced by raw2dng don't display in Finder/Quicklook, Preview, FCP/FCPX, Motion et al. The data is there, but the images show up black/blank. Ater Effects and Photoshop will take them, but if you'd like to use them in other apps, I've discovered that Adobe's DNG Converter utility fixes the problem *without* needing to convert everything to a tiff sequence and step away from raw. Here's the download link:
http://www.adobe.com/support/downloads/detail.jsp?ftpID=5568
After installing the app, just select all the .dng files for a given clip right in finder and open them. This will launch DNG Converter. Hit "Convert" and you'll get a new set of .dng files in the same folder that will work fine in the above applications. You now can use Quicklook/spacebar in Finder on these new files as usual. If you have Motion, you can drag them all right into the layers palette and you've got a raw image sequence. Color correct and export as ProRes.
Note that these are still raw frames and the original image data *appears* unaltered. I haven't examined in detail so those more knowledeable in this area should take a closer look. However I think DNG Converter is just re-wrapping them in a more Mac-friendly way.
Thanks!
#53
Raw Video / Re: Raw video on 5DMK2
May 18, 2013, 09:38:04 PM
Another first-time poster -- thanks for having me, and thanks for all the hard work here. The shackles are coming off quite unexpectedly here.
Running a Lexar 32GB 1000x card on the 5D2. Tried a couple different builds including the 17th -- performance is similar across all of them. Seeing write speeds in the 59-60 MB/sec range. Occasionally it will drop below this and record a few hundred frames less before buffering out, for reasons I haven't been able to pin down. Here's a quick rundown:
1880x720: I can record indefinitely. Pretty reliable. However, this aspect ratio is really too narrow for my purposes. I need 1080 / 16:9 for a current project, and when scaled up and cropped to this, it's not dramatically better than stock H264.
1880x840: Much longer record times -- I've seen it go over 1000 frames before buffering out. This is still a touch soft when scaled and cropped to 16:9 but it's an improvement over stock.
1880x960: This looks pretty great even when scaled/cropped. However, shortest and least reliable record times. I max out at 381 frames before buffering out. Frequently dips to the 250-300 region on some takes, even on empty/formatted card. If I could do better here, I would totally use 960 for everything.
Silvertones, you mentioned a couple pages back you were getting 640 frames at 960. That would be great. Are you still getting those record times? Have you done anything particular to enable this, or do we think it's the Komputerbay card?
Thx
Running a Lexar 32GB 1000x card on the 5D2. Tried a couple different builds including the 17th -- performance is similar across all of them. Seeing write speeds in the 59-60 MB/sec range. Occasionally it will drop below this and record a few hundred frames less before buffering out, for reasons I haven't been able to pin down. Here's a quick rundown:
1880x720: I can record indefinitely. Pretty reliable. However, this aspect ratio is really too narrow for my purposes. I need 1080 / 16:9 for a current project, and when scaled up and cropped to this, it's not dramatically better than stock H264.
1880x840: Much longer record times -- I've seen it go over 1000 frames before buffering out. This is still a touch soft when scaled and cropped to 16:9 but it's an improvement over stock.
1880x960: This looks pretty great even when scaled/cropped. However, shortest and least reliable record times. I max out at 381 frames before buffering out. Frequently dips to the 250-300 region on some takes, even on empty/formatted card. If I could do better here, I would totally use 960 for everything.
Silvertones, you mentioned a couple pages back you were getting 640 frames at 960. That would be great. Are you still getting those record times? Have you done anything particular to enable this, or do we think it's the Komputerbay card?
Thx