![]() ![]() Why can’t FotoMagico produce the same quality video using the same video compression? The output quality from iMovie is acceptable. Why? Viewing these test videos doesn’t show the real problem of poor highlights, shadows, details, clarity and color saturation of actual photos that I’ve observed and as mentioned in the above Boinx forum. Why? FotoMagico with the HD Movie option produces a poorer quality video (reduced green saturation) than the FotoMagico QuickTime Movie option even though the meta data of the output file (according to the Finder) appears to be the same. IMovie does generate a better quality video (less gamma shift) than FotoMagico with the QuickTime Movie option using the same H.264 video compression. The FotoMagico Quicktime Movie test video settings for were: The FotoMagico HD Movie test video settings for were:įile > Share > HD Movie > Size: 720P Framerate: 30fps Share > Export Using QuickTime > Export: Movie to QuickTime Movie Options The iMovie Quicktime test video settings for were: The results of these tests are contained in file. In each of the test videos, a video frame of the photo and a video frame of the video clip were measured. The photo and video clip were used to make the iMovie and FotoMagico test videos. Photoshop has the capability of importing a video and viewing/measuring each video frame. Used that photo and produced a short 2 second Quicktime video clip with iMovie and measured one of the video frames of the video for a baseline. Converted the gif file into a jpg file and measured the grayscale, red, green and blue colors for a baseline. This would determine if there was a gamma shift, color shift or less color saturation in the compressed test video.įound a color test photo on the Internet with a grayscale and a few colors. The plan was to make a short video composed of one photo and one short video clip on iMovie and FotoMagico and measure the results with Photoshop. The purpose of this study is not to determine the best video compression or compression options to use but to determine if there is a difference between iMovie and FotoMagico using the same H.264 video compression with the same options.ĭoing a Google search revealed that people have been dealing with poor quality videos generated with other apps using H.264 and were recommending other video compressors like X.264. It appears that I was not the first one to notice this problem…. I spent some time to quantify the problem rather than relying on an expressed opinion of an observed difference. ![]()
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