Bad sound break up and seems to also crash other Sendspin Clients

[AkoreJepade]

I started Sendspin music on my PC with WindowsSpin, I added in my Chromecast Audio (theater system)"Synchronize with other player" ... all was good. I then added my S23+ with SendSpinDroid on it "Synchronize with other player" and I got the usual bad breakup sound, static with music, speedup slowdown etc... and then all 3 devices just stopped and my S23+ was no longer listed in the sync group. I then pressed play and WindowsSpin and Chromecast audio picked right back up where it had automatically stopped. On my S23+ it shows "Paused". I then added the S23+ back into the Sendspin group and it played the music but was still breaking up for a few minutes and then dropped off the group again but this time the other 2 players kept playing. I then just tried to play music only to the S23+ running SendSpinDroid and it played but it was very choppy and breaking up for a minute of so then stopped playing all together and it said Paused. I pressed the Play button and it started back up with wobbling sound and then shortly after that the breaking up sound. Note that there is no way to set the "Manual Sync Offset" back to zero. I then uninstalled SendSpinDroid from my S23+ and launched HA/MA on my S23+ and then selected my phone Web (Chrome on Samsung SM-S916U1) and played some music and it played just fine so I then "Synchronize with other player" with my other 3 devices and they all played find but out of sync.

My list of gear (all Chromecast devices): Chromecast Audio, Nest Mini 2, Onn Plus, Lenovo E590 with WindowsSpin, Samsung S23 Plus with SendSpinDroid.

Let me know if I can test anything to help get to the bottom of the issues.

[dimatx]

I've also been getting similar issues testing this on several different Android devices I used as 'dashboards'. Getting issues where the audio has static, and the pitch seems to wabble up and down, and the speed of the audio slows down, and speeds up unpredictably. This all happens even when playing on a single device as a target from Music Assistant. I do have VLANs, but Music Assistant and the targets are all on the IoT VLAN. I'd also be happy to share whatever info would be helpful!

[chrisuthe]

Sorry @SirDigitalKnight @dimatx I made some breaking changes like an idiot and didn't test them the way I should have. I'm working back towards a more expected experience and will tag v 1.1.x as soon as I'm confident it's stable again. I apologize for throwing wrenches in your playback.

I did add a "Debug" option in the UI but it's a little bit of a PITA to use, you have to turn it on in settings, disconnect, connect again, then do the thing, go to settings, note it got entires, download the txt and then upload it. I dont' want any form of automatic communication with any outside server, so it has a few steps lol. If you don't mind doing that for a 15-30 second playback (roughly, longer hurts nothing) and posting it (you should probably search and delete your server IP from those logs and I should probably make them safe to share on the internet...) I'd appreciate it as it'd confirm the things I'm working on getting back to good. Sorry again!

[chrisuthe]

Okay, through a series of experiments, I think I've landed on something decent. I would appreciate testing in this area, as network conditions make a big difference. v1.0.20 has what I would call "Acceptable" correction on a relatively stable network.

[dimatx]

@chrisuthe: When I collect the logs, the only file exported contains the following text:

"SendSpin debug log attached. 128 samples collected over 2:30." and no other info. Where are the debug logs expected to be stored on the Android file system?

Maybe I'm doing something wrong?

[AkoreJepade]

Making great strides chris. I have v1.0.27 installed and it is no longer crashing the rest of my players. Syncing the players is a whole other matter but there is much less break-up/speedup/slowdown. Will be testing over the rest of the day and tomorrow and trying to get them all to sync up. One issue I did notice is pausing and then playing the music seems to make the Sync go off more after I had adjusted them to being close to in-sync. This is with WindowsSpin, SendSpinDroid and Sendspin to my Chromecast Audio.

[ChristopherPro]

Code version: v1.0.31
Android testing device:
Samsung s6 Lite - Android 14
LG velvet - Android 13
Other sendspin: Voice PE

Yes, same issue over here as well. When only 1 speaker is playing it seems to always start with a correction mode of 1/50 and then working its correction mode up to none. More or less always needing around 6100 frames dropped, minimum 1 gaps filled and minimum 1 overlaps trimmed.

When syncing with other speakers it is less constant. A fast sync is around 4000 frames dropped. Slow sync around 14000. And when syncing with the Voice PE it sometimes first joins with playing music, then pauses the group, then starts the group again and then continues its syncing process.
But I have to say it always seems to sync up and when it does it’s really a joy listening to it. And so weird to think it works so well, that it is now open source and free to use.

[ChristopherPro]

I am not sure what to make of it but in version1.0.34 I am seeming to get more and more corrections the longer the music is playing. In v1.0.31 I did not seem to have that problem. Only a start correction but when it got in sync, it stayed in sync without corrections.
Btw maybe a suggestion for an enhancement (I will make it its own issue, easier to track progress): is it possible, when starting a new speaker, to only start playing when totally synced?