[bug] Playlists don't update with the last changes when synced

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Expand view Topic review: [bug] Playlists don't update with the last changes when synced

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Nov 30, 2020 1:29 pm

Peke wrote: ↑Thu Nov 26, 2020 6:20 pm Any pointers to right directions would be more than welcome. Try to Screenshot Playlist folder content properties before and after MMA sync and then after playlist are gone.
So,what I noticed today is that a playlist, to which I added tracks but did not remove any from, simply wasn't changed. The timestamp in the folder playlist is from last week, same as it was before I synced.

Not sure what else you could mean by 'content properties' in the playlist folder.

Re: [bug] Playlists don't update with the last changes when synced

by Snofru » Mon Nov 30, 2020 6:17 am

No problem for me, glad if I can help!

I did as you suggested (Update Playlists from other apps had been on before and is now off).

As soon as I see any playlist change again (or a playlist that doesn't update on syncing) I will report it here. But maybe changing the "update playlists from other apps" option already did the job...

Re: [bug] Playlists don't update with the last changes when synced

by Peke » Sun Nov 29, 2020 8:59 pm

Hi,
Lets try this approach, by pursuing fact that you only use MMA and WiFi Sync.

Here is what you will do:
1. go to MMA Options and disable Update playlists from other apps
2. Delete playlists in playlist folders
3. Sync with MMW to get playlists back
4. See if playlists change again and when (eg. after MMA close, restart phone, left overnight, ...)

Sorry for bothering you, but somehow we need to narrow things down and check/exclude any potential apps/time frame/patterns/... in order to get to bottom of it.

I really wish it is found that it is MMA fault, because then as devs we can work on fix more quickly, but if it is outside influence then workaround/hack can take bit longer to make it working.

Re: [bug] Playlists don't update with the last changes when synced

by Snofru » Sun Nov 29, 2020 6:04 am

I have observed probably the same/similar thing that is described here: My smartphone randomly seems to change playlists and MMW doesn't recognize this change. If I allow the syncing back from the phone to MMW I get the corrupted playlists also in MMW, confirming that the timestamp of the changed playlists on the phone is newer than in MMW. Deleting the playlists on the phone does help. Unfortunately I couldn't find a pattern when and why this happens and so it is very difficult to replicate.

I don't use any other music software than MMA on my smartphone but recently I noticed that the Amazon Music app is installed. I haven't used it for a very long time but it has write permission and in theory it could do something...

I have a Samsung Galaxy S9 Duos with Android 10 and my music is on the internal memory. I only do Wifi sync. MMA version is 1.4.2.0938, MMW is 4.1.30.1914 portable.

Re: [bug] Playlists don't update with the last changes when synced

by Peke » Thu Nov 26, 2020 6:20 pm

Hi,
There was some reports on few OnePlus Devices (found out that there was some system preinstalled cleaner) and some Android 11 devices. Unfortunately as none of us in team could not replicate (guess lack of experiencing device) we could not track which devices and apps do that.

Any pointers to right directions would be more than welcome. Try to Screenshot Playlist folder content properties before and after MMA sync and then after playlist are gone.

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Thu Nov 26, 2020 5:55 pm

Peke wrote: ↑Thu Nov 26, 2020 5:49 pmNOTE: Things that we have found out is that on some devices something changes timestamp of playlists, making them invisible to MMW/MM5 on Update as they are flagged (Device changed Playlists, do not sync to avoid corruption) for security reasons.
Can you be more specific? Which devices?

Re: [bug] Playlists don't update with the last changes when synced

by Peke » Thu Nov 26, 2020 5:49 pm

Hi,
We are updating sync processes and this should be tested in next MMA/MMW/MM5 releases in order to tweak things bit more.

What I have found out is that Using WiFi Sync after USB sync and User manually delete all content of Playlist folder (using file manager not MMA) fixes the Playlists on device by re-syncing them within a minute or less.

NOTE: Things that we have found out is that on some devices something changes timestamp of playlists, making them invisible to MMW/MM5 on Update as they are flagged (Device changed Playlists, do not sync to avoid corruption) for security reasons.

Re: [bug] Playlists don't update with the last changes when synced

by seveshanks » Wed Nov 25, 2020 1:22 pm

Bumping this. Same issue.

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Nov 09, 2020 1:20 pm

This problem is still around.

Two relevant things that I noticed:

1. I still sync once a week. Two weeks ago the problem didn't happen. Everything was synced the way it should. This happened as well a couple of months ago. I can't pinpoint anything that I've done differently in those two instances that things did work.

2. When I look at a playlist immediately after sync finished on MMA I can see the new tracks in the playlist for a second sometimes and then they just disappear. Which makes me believe the problem happens at the very end of the sync process during the 'cleanup' stage or something like that.

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Sep 21, 2020 5:04 pm

Peke wrote: ↑Mon Sep 21, 2020 4:59 pm Hi,
Have you tried to initiate Second WiFi sync to se if F is added?
F only gets added if the playlist is altered in some way after F is downloaded to the device. If no changes are made F never gets added no matter how often I sync.

Re: [bug] Playlists don't update with the last changes when synced

by Peke » Mon Sep 21, 2020 4:59 pm

Hi,
Have you tried to initiate Second WiFi sync to se if F is added?

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Sep 21, 2020 4:23 pm

Problem still persists as of today.

Let me refocus on the problem, ignoring the noise from others in this thread:

I've established that new tracks to a playlist are updated to that playlist on MMA after the sync if these were downloaded to the device before the sync and if the playlist was actually changed on MMW between the new sync and the last sync.

So:

If Playlist X has tracks A,B,C and Playlist Y has track D and both of these are already correctly on the device running MMA then:

When I add track D and E to Playlist X and then sync, now the MMA version of Playlist X has tracks A,B,C,D but not E. -> D got added because it was already on the device since it was on Playlist Y but E was now downloaded to the device for the first time and therefor not added to Playlist X.

If I sync again without any playlist changes then E still does not get added to Playlist X.

If I add track F to Playlist X and sync again then F gets newly downloaded to the device, E now gets added to Playlist X on MMA but F does not.

So basically there seems to be a problem with the order in which checks are made.

So it seems like the MMA does everything correctly; updates the playlists, deletes obsolete tracks, downloads new tracks but then after that it kicks off any newly downloaded tracks to the device from playlists.

Re: [bug] Playlists don't update with the last changes when synced

by Peke » Mon Aug 31, 2020 5:42 pm

Hi,
Now you have a PM ;)

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Aug 31, 2020 3:15 pm

Erwin Hanzl wrote: ↑Tue Aug 25, 2020 12:31 am @Onweerwolf
see my PICTURE 1) above: did you activate the option before creating the playlists?
http://www.mediamonkey.com/forum/viewto ... 5&start=30

If NO, the following solution:
1. In MMA, delete only the playlists
2. Quit MMA
3. MM4: activate as in my picture 1) "UTF-8 encoding"
4. Restart the MM4
5. Create a new EMPTY playlist named "XYZ"
6. Click on an appropriate "OLD" problem playlist
7. mark all content
8. Send to playlist "XYZ"
9. See my PICTURE 9 above: BEFORE synchronization you have to activate these options.
10. MM4 restart
11. SYNCHRONIZE using WiFi

If the same error occurs:
in MMA just delete the playlists and try USB cable SYNC (this is much faster)

Your result?

Google-Translated, sorry
Your 'solutions' either don't work (the UTF8 thing makes no difference when flagged or not) or are not solutions at all (using a cable instead of wireless is just nonsense).

Re: [bug] Playlists don't update with the last changes when synced

by Onweerwolf » Mon Aug 31, 2020 3:10 pm

Peke wrote: ↑Mon Aug 24, 2020 5:04 pm Hi,
PM was sent to Erwin for extended debugging :)
This is not his topic though, he's just been hijacking it, and his problems seem different than mine, though similar. My problem however is not solved.

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