Why is this NOT a sync issue

[KostFan2]

The attached screen shot shows Lightroom.Adobe.com displaying 4,478 for “All Photos”.

However, Lightroom Classic displays 4,431 for “All Synced Photos”

Please explain why there is NOT a sync issue and that the program is working as designed.

Please wait 8 hours to give some of the other “Legends” and Community Experts” a chance to answer.  I am pretty sure all of you already know.

For bonus points, what is the process you can go through to validate your explanation?

[johnrellis]

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One cause of a discrepancy is that videos synced from LR Cloud to LR Classic won't appear in All Synced Photos.  All Synced Photos contains files that are synced in both directions, but since LR Classic won't sync videos back to LR Cloud, videos won't appear in it.

The easiest way to find such videos is by using the Any Filter plugin:

Without the plugin, you could do this procedure:

1. In LR Cloud, create an album "All Cloud Photos" and put every photo and video in it.

2. Wait until it syncs with LR Classic. The LR Classic collection All Cloud Photos will contain both photos and videos from LR Cloud.

3. Subtract the photos in All Synced Photos from the collection All Cloud Photos -- the remaining files will be videos.  The subtraction can be done in just a few steps and is left as an exercise for the reader.

[KostFan2]

@johnrellis: You got the quiz answer correct. 

However, you missed the bonus points.   You can do the same calculation you proposed using Lightroom.  Where in LIghtroom is the feature that enables you to do this?

[johnrellis]

Step 3.

[KostFan2]

No. You don't need to perform your step #1 and #2.  You already have that information in "All Photos" in  Lightroom.Adobe.com.  There is a feature in Lightroom Classic that will give you the number of videos in your catalog.  Where is that feature?

[johnrellis]

If you just want the total number of videos in the catalog, you can click All Photos, do Photo > Stacking > Expand All Stacks, then click Library Filter bar > Attribute, then click the Videos icon, which filters by file-type = video.  

But the original problem was to "validate your explanation" of why there was a discrepancy in All Synced Photos.  To do that, you need to know how many videos were synced from LR Cloud, not the total number of videos in your catalog (they could be different, as they are in my catalog).  That requires one of my two methods.

[KostFan2]

The Lrc feature I used last year was to select all photos/active top filter bar/Select attribute/then the video icon at the far right end of the top bar (to the right of the Virtual copies icon).

Please describe the workflow where you have videos on Lightroom.Adobe.com  that do NOT sync with Lightroom Classic.  Thank you

[johnrellis]

"3. Subtract the photos in All Synced Photos from the collection All Cloud Photos -- the remaining files will be videos.  The subtraction can be done in just a few steps and is left as an exercise for the reader."

a. Click the special collection All Synced Photographs.

b. Select all displayed photos (Ctrl/Cmd A).

c. Click the collection All Cloud Photos.  The photos selected in step b (All Synced Photographs) remain selected.

d. Do the menu command Edit > Invert Selection. The selected photos/videos are now those in All Cloud Photos that aren't in All Synced Photographs.

[JohanElzenga]

Please describe the workflow where you have videos on Lightroom.Adobe.com  that do NOT sync with Lightroom Classic.  Thank you

By @KostFan2

I don't think you can have such videos. AFAIK videos will always sync down from the cloud to Lightroom Classic. They just do not sync up and changes do not sync up either.

[Jim Wilde]

I don't think you can have such videos. AFAIK videos will always sync down from the cloud to Lightroom Classic. They just do not sync up and changes do not sync up either.

By @JohanElzenga

That's correct, but oddly deletion of a video file that was downloaded from Lightroom cloud DOES sync to the cloud, resulting in the (probably unexpected) removal of that video file from the cloud.

[johnrellis]

"what is the process you can go through to validate your explanation?"

When there are discrepancies in counts between LR Classic and LR Cloud, you must account for sync failures (not uncommon), some of which are silent (not appearing in the LR Classic user interface, less common).  In particular, you must account for all of the following:

- Videos synced from LR Cloud to LR Classic,  which  by design don't appear in All Synced Photographs.

- Videos imported into LR Classic (and by design not synced to LR Cloud).

- Videos and photos in LR Cloud whose sync to LR Classic has failed.

- Photos imported into LR Classic placed in synced collections whose sync to LR Cloud has failed.

- Videos synced from LR Cloud to LR Classic deleted from LR Classic, but whose deletion has failed to sync to LR Cloud.

Simply counting the number of videos in LR Cloud using a LR Cloud app isn't sufficient. You must count synced photos and videos in LR Classic too.

[Jim Wilde]

Simply counting the number of videos in LR Cloud using a LR Cloud app isn't sufficient. You must count synced photos and videos in LR Classic too.

By @johnrellis

If the difference between the total number of images in All Synced Photographs in LrC and the total of All Photos in the Cloud is exactly equal to the number of videos included within that cloud All Photos total, then I personally do think that IS sufficient. Agreed that deep-diving into other areas is needed when totals do not balance, but not when balance has been achieved.

[johnrellis]

"If the difference between the total number of images in All Synced Photographs in LrC and the total of All Photos in the Cloud is exactly equal to the number of videos included within that cloud All Photos total, then I personally do think that IS sufficient. Agreed that deep-diving into other areas is needed when totals do not balance, but not when balance has been achieved."

When Classic All Synced Photos + Cloud Videos = Cloud All Photos, usually there's no inconsistency with sync. But it's not guaranteed, e.g. the user imported a photo and a video to the Cloud, but the sync to Classic failed.  

[Jim Wilde]

You can do the same calculation you proposed using Lightroom.  Where in LIghtroom is the feature that enables you to do this?

By @KostFan2

Use the Lightroom desktop app, click on All Photos, click on the Filter icon, click on Type in the resulting filter bar, then click on Video. That reveals the total of all videos in the cloud, the sum of which should be subtracted from that All Photos total to see if the result matches the All Synced Photographs total in LrC.

Or you could use the more limited Filter options in LrWeb: click on All Photos, click on the Filter Icon, click on the Video icon at the end of the resulting Filter bar. That gives the same total of videos, then do the maths.

Or you could use the filter options in Lightroom Mobile......