Reading Canon Rating Metadata for video clips

[Michael-UNCP]

Is your feature request related to a problem? Please describe. The Canon R3 (and presumably other Canons) have the ability to set a 0-5 star rating for video clips in the camera's internal review. Canon internal ratings show for images but not video clips.

Describe the solution you'd like I would like to see Adobe software (Bridge & Premiere) read the rating from whatever non-standard metadata space Canon uses and automatically transpose it to the standard rating metadata spaces. Alternatively, displaying and allowing to filter by Canon's non-standard metadata would also be useful so that one could manually assign a corresponding rating to a standard rating metadata field.

Describe alternatives you've considered I have also use PhotoMechanic to try and read Canon's video clip rating metadata. It also doesn't work. Canon's own Digital Photo Professional 4 does display the Canon rating metadata for video clips. This demonstrates that the rating is stored in the metadata somewhere.

Additional context To stay under the file size limits, I've attached a 1-second video clip that has a 4-star rating from the internal rating of the Canon R3. I have confirmed that, for this clip

• Canon's Digital Photo Professional 4 does display the 4-star rating.
• Adobe Bridge does not show a star rating in the thumbnail
• Adobe Bridge does not show the star rating in any of the metadata fields in the Metadata panel. Thank you.

https://github.com/adobe-dmeservices/custom-metadata/assets/170536305/61c3f124-8f59-49ca-83fb-06bcbef19413

[jameslockman]

Thanks for sending the file. We are unable to detect any metadata in the binary relating to rating. We have inspected the XMP packet as well as the file header. This is not definitive, as we do not know whether Canon has embedded the rating elsewhere in the file. We are wondering whether you are connected to the camera directly or to a memory card when using Digital Photo Professional 4. If so, we believe that the camera is writing a file to the camera card that contains the ratings. Are there any invisible files on the card, and if so, in what directories?

[Michael-UNCP]

Thanks for the quick response. We are wondering whether you are connected to the camera directly or to a memory card when using Digital Photo Professional 4.

• The camera's CFexpress card is in a card reader. DPP4 is reading from the card reader.
• As a test, I formatted an SD card and copied the MP4 file alone from the CFexpress card it to the formatted SD card and opened that up in Digital Photo Professional 4. DPP4 is still able to see the rating so I suspect it's embedded in the MP4 file somewhere.
• This thread in the Adobe Community Forums suggests that the Canon EOS R50 stores the rating in "Quicktime:Rating". If true, maybe that's the case for the R3 as well? https://community.adobe.com/t5/lightroom-classic-discussions/rating-videos-on-camera-canon-r-stars-don-t-survive-import-to-lr-classic/m-p/14586238
• Screenshot of the isolated MP4 file in DPP4 with the rating. EOS_DIGITAL (D) is the CFexpress card. NOSELF (G) is the formatted SD card with the isolated MP4.
• @.***

If so, we believe that the camera is writing a file to the camera card that contains the ratings. Are there any invisible files on the card, and if so, in what directories? MIKE0517.CSD is a camera settings file for copying settings from one camera to another or saving presets. M3100.CTG is a catalog index file. I've attached it but I don't think the rating is in there since DPP4 see the rating without that file.

Here's a complete directory tree of the card. The sample was file R3_16193.MP4 D:>dir /S Volume in drive D is EOS_DIGITAL Volume Serial Number is 0D11-102C

Directory of D:\

05/17/2024 04:00 PM

DCIM 05/17/2024 04:00 PM MISC 05/17/2024 04:02 PM 3,707,424 MIKE0517.CSD 1 File(s) 3,707,424 bytes

Directory of D:\DCIM

05/17/2024 04:00 PM

. 05/17/2024 04:00 PM .. 05/17/2024 04:00 PM 100EOSR3 05/17/2024 04:00 PM CANONMSC 0 File(s) 0 bytes

Directory of D:\DCIM\100EOSR3

05/17/2024 04:00 PM

. 05/17/2024 04:00 PM .. 05/21/2024 09:25 AM 9,174,014 _3_16170.JPG 05/21/2024 09:25 AM 23,287,560 _3_16170.CR3 05/21/2024 09:25 AM 10,011,177 _3_16171.JPG 05/21/2024 09:25 AM 23,931,144 _3_16171.CR3 05/21/2024 09:25 AM 8,682,163 _3_16172.JPG 05/21/2024 09:25 AM 22,816,520 _3_16172.CR3 05/21/2024 09:25 AM 12,506,073 _3_16173.JPG 05/21/2024 09:25 AM 24,861,448 _3_16173.CR3 05/21/2024 09:25 AM 11,972,953 _3_16174.JPG 05/21/2024 09:25 AM 24,708,872 _3_16174.CR3 05/21/2024 09:25 AM 12,979,470 _3_16175.JPG 05/21/2024 09:25 AM 25,283,336 _3_16175.CR3 05/21/2024 09:28 AM 13,654,521 _3_16176.JPG 05/21/2024 09:28 AM 26,160,392 _3_16176.CR3 05/21/2024 09:32 AM 448,579,476 R3_16177.MP4 05/21/2024 09:33 AM 498,088,696 R3_16178.MP4 05/21/2024 09:33 AM 359,956,604 R3_16179.MP4 05/22/2024 08:37 AM 8,811,687 _3_16188.JPG 05/21/2024 09:34 AM 233,112,832 R3_16182.MP4 05/21/2024 09:35 AM 870,772,152 R3_16183.MP4 05/21/2024 09:36 AM 87,085,360 R3_16185.MP4 05/21/2024 09:36 AM 145,519,032 R3_16187.MP4 05/22/2024 08:37 AM 24,203,528 _3_16188.CR3 05/22/2024 08:42 AM 167,425,728 R3_16189.MP4 05/22/2024 08:54 AM 6,009,472 R3_16190.MP4 05/22/2024 08:55 AM 9,202,660 R3_16191.MP4 05/22/2024 08:56 AM 21,870,720 R3_16192.MP4 05/22/2024 08:56 AM 4,790,292 R3_16193.MP4 28 File(s) 3,135,457,882 bytes

Directory of D:\DCIM\CANONMSC

05/17/2024 04:00 PM

. 05/17/2024 04:00 PM .. 05/22/2024 08:56 AM 392 M3100.CTG 1 File(s) 392 bytes

Directory of D:\MISC

05/17/2024 04:00 PM

. 05/17/2024 04:00 PM .. 0 File(s) 0 bytes

Directory of D:\System Volume Information

05/21/2024 02:17 PM 12 WPSettings.dat 05/21/2024 02:17 PM 76 IndexerVolumeGuid 05/22/2024 09:06 AM

EDP 2 File(s) 88 bytes

Directory of D:\System Volume Information\EDP

05/22/2024 09:06 AM

. 05/22/2024 09:06 AM .. 05/22/2024 09:06 AM Recovery 0 File(s) 0 bytes

Directory of D:\System Volume Information\EDP\Recovery

05/22/2024 09:06 AM

. 05/22/2024 09:06 AM .. 0 File(s) 0 bytes

 Total Files Listed:
          32 File(s)  3,139,165,786 bytes
          18 Dir(s)  1,021,019,422,720 bytes free

MICHAEL C. LITTY (He/Him/His) VIDEOGRAPHER UNIVERSITY COMMUNICATIONS & MARKETING Office: Business Administration Building 124 I 910.775.4569

The University of North Carolina at Pembroke 1 University Drive I P.O. Box 1510 I Pembroke, NC 28372 @.***

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Thanks for sending the file. We are unable to detect any metadata in the binary relating to rating. We have inspected the XMP packet as well as the file header. This is not definitive, as we do not know whether Canon has embedded the rating elsewhere in the file. We are wondering whether you are connected to the camera directly or to a memory card when using Digital Photo Professional 4. If so, we believe that the camera is writing a file to the camera card that contains the ratings. Are there any invisible files on the card, and if so, in what directories?

- Reply to this email directly, view it on GitHubhttps://github.com/adobe-dmeservices/custom-metadata/issues/40#issuecomment-2126060513, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BIVC24NRAURBEAPUN35VIRLZDVFONAVCNFSM6AAAAABIDXFFXKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCMRWGA3DANJRGM. You are receiving this because you authored the thread.Message ID: @.**@.>>

[Michael-UNCP]

If there's anything more I can do to support this request, please let me know. I appreciate all of your work.