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Discussion in 'iOS 11' started by 007p, Jun 5, 2017.
small quality loss but great compression gain, for those who want quality can use the Manual app to shoot RAW-DNG
Yes, most third party camera apps support RAW or some lossless format. HEIF image quality will improve with upgrades to the HEVC encoder, and when apps gain HEVC compatibility, there will be options to choose quality vs size of the stored image. I am curious if the Apple have chosen rather low quality setting in its camera app, to ensure fast storage and very little lag. I have converted some RAW images to HEIF in FFMPEG with the “placebo” setting and and quality setting equal to creating file size a typical “80%” jpeg quality file gives and the quality is remarkably better.
You might save space but transcoding from JPG to HEIC/HEVC might make them look worse. Ideally a copy of the originals (before it was converted to JPG/H.264) would be used to create the new HEIC/HEVC versions.
How did you import the video?
I used the utility image capture and when I open the video in the player I read H264.
By the way the video is really laggy on my iMac, while it plays smooth on the iPhone. I'm talking about the 4K video at 60fps, the 1080 version is smooth on the Mac as well
I haven't upgraded to High Sierra yet, so that might be the reason why it is converted in H264
I believe when you share your HEVC picutres or films with AirDrop, it always will be converted in jpeg or H.264 format.
All iOS devices running iOS 11 and all Macs on High Sierra will support HEVC playback, with encoding/decoding hardware acceleration on newer iOS devices and the latest 2017 Macs offering faster performance combined with less battery drain.
This has been implemented poorly.
First, better compression efficiency should not be an excuse to reduce quality, rather the opposite! They should’ve used a compression setting for HEIF that at least matched the quality of the former JPGs, if not exceeded it. A 40-50% size reduction would’ve still been great. 80-100% is overkill.
Personally I would’ve liked a lossless option as well, which I’m sure HEIF supports, but I guess I have to buy a third-party camera app for that which is stupid.
I can’t help but think Apple gets almost nothing right in software anymore.
So I just got my iPhone X and iOS11.1..
Seems I can have jpg for photos and HEVC for 4k60p.
This was verified when importing the files through image capture on High Sierra.
Seems you can have the best of both worlds. Anyone else confirm?