Good point. Does not work neither. in MSP 17 i cant even import the files. Error: "Does not support File Type" (or similar)

According to VLC there is no difference in the used codec. They are recorded in different frame-rates but that should not be the problem.

This is the mediainfo of one of the files that is not working iPhone 12:

Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   0000.00 (qt  )
File size                                : 50.8 MiB
Duration                                 : 48 s 883 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 8 725 kb/s
Encoded date                             : UTC 2021-01-09 14:19:45
Tagged date                              : UTC 2021-01-09 14:20:34
Writing library                          : Apple QuickTime
com.apple.quicktime.location.accuracy.ho : 65.000000
com.apple.quicktime.location.ISO6709     : +50.2454+008.5853+227.127/
com.apple.quicktime.make                 : Apple
com.apple.quicktime.model                : iPhone 12 Pro Max
com.apple.quicktime.software             : 14.2.1
com.apple.quicktime.creationdate         : 2021-01-09T15:19:44+0100

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L4@Main
HDR format                               : Dolby Vision, Version 1.0, dvhe.08.04, BL+RPU, HLG compatible
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 48 s 883 ms
Bit rate                                 : 8 516 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 30.000 FPS
Minimum frame rate                       : 28.571 FPS
Maximum frame rate                       : 31.579 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.137
Stream size                              : 49.6 MiB (98%)
Title                                    : Core Media Video
Encoded date                             : UTC 2021-01-09 14:19:45
Tagged date                              : UTC 2021-01-09 14:20:34
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : HLG
Matrix coefficients                      : BT.2020 non-constant
Codec configuration box                  : hvcC+dvvC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 48 s 882 ms
Source duration                          : 48 s 948 ms
Bit rate mode                            : Variable
Bit rate                                 : 165 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 982 KiB (2%)
Source stream size                       : 983 KiB (2%)
Title                                    : Core Media Audio
Encoded date                             : UTC 2021-01-09 14:19:45
Tagged date                              : UTC 2021-01-09 14:20:34

Other #1
Type                                     : meta
Duration                                 : 48 s 883 ms
Bit rate mode                            : Constant

Other #2
Type                                     : meta
Duration                                 : 48 s 883 ms
Bit rate mode                            : Constant

Other #3
Type                                     : meta
Duration                                 : 48 s 883 ms

and this one is recorded by an iPhone 8, which does work (same project / also in MS 17):

Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   0000.00 (qt  )
File size                                : 33.2 MiB
Duration                                 : 23 s 935 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 11.6 Mb/s
Encoded date                             : UTC 2020-10-10 09:57:39
Tagged date                              : UTC 2020-10-10 09:58:04
Writing library                          : Apple QuickTime
com.apple.quicktime.location.ISO6709     : +50.2453+008.5853+227.939/
com.apple.quicktime.make                 : Apple
com.apple.quicktime.model                : iPhone 8
com.apple.quicktime.software             : 13.6.1
com.apple.quicktime.creationdate         : 2020-10-10T11:57:39+0200

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4.1@Main
Codec ID                                 : hvc1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 23 s 935 ms
Bit rate                                 : 11.5 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 60.000 FPS
Minimum frame rate                       : 54.545 FPS
Maximum frame rate                       : 60.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Bits/(Pixel*Frame)                       : 0.093
Stream size                              : 32.9 MiB (99%)
Title                                    : Core Media Video
Encoded date                             : UTC 2020-10-10 09:57:39
Tagged date                              : UTC 2020-10-10 09:58:04
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : hvcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 23 s 935 ms
Source duration                          : 23 s 986 ms
Bit rate mode                            : Variable
Bit rate                                 : 91.8 kb/s
Channel(s)                               : 1 channel
Channel layout                           : C
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 268 KiB (1%)
Source stream size                       : 269 KiB (1%)
Title                                    : Core Media Audio
Encoded date                             : UTC 2020-10-10 09:57:39
Tagged date                              : UTC 2020-10-10 09:58:04

Other #1
Type                                     : meta
Duration                                 : 23 s 935 ms
Bit rate mode                            : Variable
Duration_FirstFrame                      : 7282
Duration_LastFrame                       : 16320

Other #2
Type                                     : meta
Duration                                 : 23 s 935 ms
Bit rate mode                            : Constant

@mb213
I see difference in fps, but in both they are variable framerate.
A video editor like Vegas does not like variable framerate, but both files have it and the lower fps works and the doubled fps not with you.
I cannot test those files because I don't have them, but will try if you offer here a link to a smal file with the 60fps on a cloudservice where we can download it unharmed to test out on our installations.

the frames are not the problem - i have been using the footage from the iphone 8 over years now with this software.

i did some more testing and found the problem. it looks like that the HDR / Dolby Vision Feature on the iPhone is causing the problem. I tested it with Movie Studio 16 / 17 (Trial) and Pro 18 (Trial). If this feature is deactivated on the iPhone, i can use recorded files.

Here are the files - all recorded with iPhone 12 Max:

HDR / Dolby off (works in MS 16 / 17 & Pro 18)

https://drive.google.com/file/d/1xNIzLtUx-hS7THbJIrZmdC0dn8GuyXyH/view?usp=sharing

HDR / Dolby on (green in MS 16 / no Import in 17 / black in Pro 18):

https://drive.google.com/file/d/1FromvwXDjM7k1lGZIMrQa3EoUbZWgYt0/view?usp=sharing

Does somebody know if HDR / Dolby isnt supported by Movie Studio?

Thanks for any help.

For both files in VMS I get the same experience as you.
Both files are working good in my Vegas Pro 18, default installation.
I think you can draw your own conclusions about the possibilities in VMS compared to the latest Pro version.

The problem with the dolby vision with the older versions of Vegas (I assume that j-v got it to work in VP18 which I don't have) is that Dolby vision is not yet (to my knowledge) standardized to how to put that layer into one file. Apple seems to have a proprietary method of doing this.

The guys at MakeMKV can make-shift merge the dolby vision layer into an mp4 and it works sort-of but there's no standard for saving the DV layer into a video file at this time. HDR10 and HLG are standardized, though. Those are free codecs while Dolby Vision is proprietary and requires licenses.

Thank you for testing.

I guess that the Vegas Pro 18 Trial should work like the normal "default installation". So therefore i might have another problem and an upgrade wont fix my issue.

Just to be clear: I installed the Pro 18 Trial Version and did not change any Preference. The HDR File gives me a black preview screen. Any ideas?