given the amount if vid presentations that must use still content, I'm surprised there doesn't seem to be more info about this. The codec you mention doesn't seem to be available for imovie, however I did find some posts that FCP seemed to have less of this problem. On the other hand, your attention to night images and use in FCP may undermine that conclusion. Any image approaching that kind of tonality here is getting hammered. I've tried a variety of export codecs with little difference. I found some speculation that the hammering takes place at import, but little about how to change that result, and there aren't that many options for tiff preparation anyway, a tiff is a tiff. SOme suggested placing content in the event folder manually, but imovie events don't recognixe tiffs. My conclusion is also that it's not a color management issue, given the same result no matter what space and tagging is used. I found one suggestion that old versions of imovie may not have this problem, I'll try to check that out next. This project doesn't justify an FCPX purchase... So I guess this may be OT for this forum, but I can't find much elsewhere. Thanks, T Scott Martin wrote:
Hi Tyler, I’ve been doing some similar testing with a project I’ve been building in Final Cut Pro X. I work primarily with night photography so as you can imagine, I’m quite sensitive to the tonal degradation we typically see in the shadows in video.
I’m not sure what options you have in iMovie but, FWIW, I’ve discovered that the color space is of little consequence, but the format is paramount. If I maser video in the PreRes 422HQ format (or higher) then there’s no visible degradation. PreRes 422 and lower, including the notable H264 format use compression that’s pretty terrible on the shadows and since most delivery methods require H264 (like Vimeo and YouTube) we’re really limited. I’m hoping that H265 will improve the quality here. In the meantime, I’m exploring using media players that allow playback from H265 and uncompressed formats. Again, I’m not sure if this helps you with iMovie but hopefully this sheds some light - it’s the compression format we need to focus on - not the color space.
Scott Martin * * * *www.martinphoto.com <http://www.martinphoto.com>* * * *
On Oct 27, 2014, at 5:02 PM, Tyler Boley <tboley@tylerboley.com <mailto:tboley@tylerboley.com>> wrote:
I'm creating a variety of short movies featuring photography stills in iMovie, I need the transition and Ken Burn's cropping tools. I've tried a variety of import methods (tagged tiffs), including pre-converting all files to HDTV, sRGB, GenericRGB, etc, and iMovie totally hammers near blacks with loss of continuity and bad color crossovers. I've also tried various export methods, to no avail. Problems are most obvious with B&W imagery but close inspection of color reveals the same problems. Is it simply impossible to do this well with iMovie, or are there some techniques I need to use? I've googled about this a lot, seems to be a commom problem... Thanks, Tyler _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users@lists.apple.com <mailto:Colorsync-users@lists.apple.com>) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/scott%40on-sight.com
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