Magoespa 2 Posted November 27, 2023 Share Posted November 27, 2023 Hello, I'm writing because I have an issue when trying to play any type of video on my Apple TV with the MPV player. The main problem is that the audio has a very subtle delay, noticeable when watching the actor's lip sync. This issue doesn't occur with the native player, but I wouldn't like to use it because it doesn't support several formats supported by the MPV player. When I'm playing the same movie with Plex everything works fine and no audio lag is detected. I've also tried the same movie with a chromecast and works with no lags too. I have also attached logs where you can compare when I'm playing with apple tv native player and with MPV. embyserver (1).txt 1 Link to comment Share on other sites More sharing options...
Luke 37956 Posted November 27, 2023 Share Posted November 27, 2023 HI, we'll take a look at it. Thanks for reporting. 2 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted November 30, 2023 Share Posted November 30, 2023 Hello, new user of Apple TV 4K, IOS17, I encounter the same problem when playing MKV (h.264 and h.265) the MPV player generates an audio delay. there is no option to adjust the offset in emby? if it helps, the iptv applications (oqee (free for french user); canal +) are perfectly synchronized. Using infuse, I also have the lag but the application allows you to adjust the audio lag (I have to put +200ms which is a lot) 1 Link to comment Share on other sites More sharing options...
Luke 37956 Posted December 5, 2023 Share Posted December 5, 2023 Hi, can you please try Emby for Apple TV 1.8.0 and let us know how that compares? Thanks. 1 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted December 7, 2023 Share Posted December 7, 2023 On 12/5/2023 at 3:39 AM, Luke said: Hi, can you please try Emby for Apple TV 1.8.0 and let us know how that compares? Thanks. unfortunately this doesn't solve anything for me. All files read by emby and its player have an audio/video delay which really makes the application unusable it is not possible to add a parameter to adjust the delay as is done in other applications? Link to comment Share on other sites More sharing options...
whytea 5 Posted December 9, 2023 Share Posted December 9, 2023 Hi. Same problem over here. I'm using an Emby Server 4.7.14.0 on a debian 11 linux Server with Emby for Apple TV 1.8.0 (5). Details see in the log. Sorry for the big log. Debug logging is on. At "2023-12-09 18:16:51.405 Info SessionManager: Playback start reported by app Emby for Apple TV 1.8.0 (5) playing Sky Sport Bundesliga 1 HD. Started at 0 ms" I started the stream. I use the vupus livetv plugin. My FireTVs have no pronlem and everything works fine. Only on my AppleTV 4K using the Emby App with MPV the problem ocours. If I use the emby app with native the sound is synced but the stream will be transcoded and the tv picture gets significantly worse. I hope that helps a bit. embyserver.txt Link to comment Share on other sites More sharing options...
Magoespa 2 Posted December 11, 2023 Author Share Posted December 11, 2023 (edited) On 12/5/2023 at 3:39 AM, Luke said: Hi, can you please try Emby for Apple TV 1.8.0 and let us know how that compares? Thanks. Tested on 1.8.0 (5) with my apple tv 4k and the problem still persist Edited December 11, 2023 by Magoespa Link to comment Share on other sites More sharing options...
Luke 37956 Posted December 11, 2023 Share Posted December 11, 2023 OK we're looking into it. Thanks. 1 1 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted December 13, 2023 Share Posted December 13, 2023 (edited) @Luke For information, with new TVos 17.2 and internal player, always same delay ( audio is before video) Edited December 13, 2023 by J0ffr37 1 Link to comment Share on other sites More sharing options...
Luke 37956 Posted December 13, 2023 Share Posted December 13, 2023 OK thanks for the update. Link to comment Share on other sites More sharing options...
whytea 5 Posted December 25, 2023 Share Posted December 25, 2023 Hi. I've tried to disable "An Bildrate anpassen" in the appletv settings. The video and audio is synced now. If I enable "An Bildrate anpassen" again it is unsynced again. But of course I want to enable it again in the future. Maybe that helps. 2 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted December 26, 2023 Share Posted December 26, 2023 23 hours ago, whytea said: Hi. I've tried to disable "An Bildrate anpassen" in the appletv settings. The video and audio is synced now. If I enable "An Bildrate anpassen" again it is unsynced again. But of course I want to enable it again in the future. Maybe that helps. I will test this this evening or tomorrow morning. but it is not ideal to deactivate this option because the image frequency will no longer be adapted depending on the source and therefore risks having problems with the fluidity of the image (lag, etc.) 1 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted December 27, 2023 Share Posted December 27, 2023 @Luke So I actually removed the option to automatically adapt the frame rate to the source in the appletv settings in fact without this option there is no longer any sound/video delay but it's a shame because this option is very useful for juggling between European TV apps, streaming and films on emby because there are frequency differences between the sources and without this option we have problems on certain frequencies so the lag problem seems to come from the processing of the frequency by the appletv (the sound is always ahead of the image). But why no delay in netflix and other streaming app ! @Luke is it not possible to add an option in emby player to adjust the delay? (like infuse?) 1 1 1 Link to comment Share on other sites More sharing options...
Luke 37956 Posted December 28, 2023 Share Posted December 28, 2023 HI, we'll take a look at it. Thanks for reporting. 1 Link to comment Share on other sites More sharing options...
jpc0480 2 Posted January 8 Share Posted January 8 Just wanted to see if there has been any progress on this? I have issues with audio out of sync as well with the Emby app on Apple TV 4K. Link to comment Share on other sites More sharing options...
Luke 37956 Posted January 14 Share Posted January 14 On 1/8/2024 at 10:46 AM, jpc0480 said: Just wanted to see if there has been any progress on this? I have issues with audio out of sync as well with the Emby app on Apple TV 4K. Hi, we are looking into this. Thanks. 1 1 Link to comment Share on other sites More sharing options...
Skopin 9 Posted February 4 Share Posted February 4 Commenting here for easier tracking. I'm also having the same issue with MPV. Using the native player works but then none of my 4K movies play. 1 2 Link to comment Share on other sites More sharing options...
J0ffr37 8 Posted June 24 Share Posted June 24 On 04/02/2024 at 03:01, Skopin said: Commenter ici pour un suivi plus facile. J'ai également le même problème avec MPV. L'utilisation du lecteur natif fonctionne, mais aucun de mes films 4K n'est lu. Honestly, the lag problem seems to come from Apple TV which systematically shifts the sound when automatic frequency adaptation is activated. I finally switched to infuse and connected it to the emby database, I found the current readings, folder, etc.. infuse allows you to manage synchronization by modifying the lag and recovering good synchronization. In any case, on Apple TV, to play trueHD, you will have to go through infuse so you might as well manage everything like that Link to comment Share on other sites More sharing options...
brezlord 6 Posted September 2 Share Posted September 2 The issue still persists. The only way to make it watchable is select the native player. The problem this is everything is transcoded. Link to comment Share on other sites More sharing options...
brezlord 6 Posted September 2 Share Posted September 2 I don't believe waving the white flag and using infuse is the answer. You lose functionality lite live TV through infuse. There must be a solution to this problem. In the short term adding the option to adjust the delay so that you can fix the sync issue would be a good idea and this does not seem like a difficult thing to implement. Link to comment Share on other sites More sharing options...
zaHrecsohbiw 5 Posted September 3 Share Posted September 3 21 minutes ago, brezlord said: I don't believe waving the white flag and using infuse is the answer. You lose functionality lite live TV through infuse. There must be a solution to this problem. In the short term adding the option to adjust the delay so that you can fix the sync issue would be a good idea and this does not seem like a difficult thing to implement. For Apple TV, every media player that I have personal experience with that uses the MPV library seems to have this problem. It's especially frustrating if you use HomePods as default audio output. I'm actually perfectly fine relying on transcoding so that I can always use the native player, but that hasn't been especially reliable for me on the server side. I agree though that rather than give up and use infuse, we should do what we can to help define the problem(s) in order to diagnose the issues. I take it from your post that transcoding isn't an ideal solution in your case? Link to comment Share on other sites More sharing options...
brezlord 6 Posted September 3 Share Posted September 3 (edited) Transcoding works fine as I have a Nvidia Quadro P600 attached to the VM running emby. The issue is that you lose quality from a full bluray rip essentially on 4K rips. I have been using Plex since its inception and have been keeping any eye on Emby for years. I have started using Emby as my dayily driver for video but use Plex for audio. The Plex amp is unbeatable and I hope one day Emby will get a dedicated music app that work as good as plex-amp. The Plex appleTV app has similar sync issues so I would agree that MPV is a pain in the ass. I'm not sure what player infuse is using. Exposing an option to manually sync audio with video seems like the easy option that has the most benefit with the least development effort. Edited September 3 by brezlord Link to comment Share on other sites More sharing options...
zaHrecsohbiw 5 Posted September 3 Share Posted September 3 38 minutes ago, brezlord said: Transcoding works fine as I have a Nvidia Quadro P600 attached to the VM running emby. The issue is that you lose quality from a full bluray rip essentially on 4K rips. I have been using Plex since its inception and have been keeping any eye on Emby for years. I have started using Emby as my dayily driver for video but use Plex for audio. The Plex amp is unbeatable and I hope one day Emby will get a dedicated music app that work as good as plex-amp. The Plex appleTV app has similar sync issues so I would agree that MPV is a pain in the ass. I'm not sure what player infuse is using. Exposing an option to manually sync audio with video seems like the easy option that has the most benefit with the least development effort. It's funny that you bring this example up. I just mentioned in another thread earlier today that I don't understand the need for transcoding from HEVC to AVC, considering that HEVC is natively supported by Apple TV. Do you happen to know a technical justification for this? Link to comment Share on other sites More sharing options...
Luke 37956 Posted September 3 Share Posted September 3 48 minutes ago, zaHrecsohbiw said: It's funny that you bring this example up. I just mentioned in another thread earlier today that I don't understand the need for transcoding from HEVC to AVC, considering that HEVC is natively supported by Apple TV. Do you happen to know a technical justification for this? Hi, did you explore the stats feature in the video player to learn why it was transcoding? Link to comment Share on other sites More sharing options...
zaHrecsohbiw 5 Posted September 3 Share Posted September 3 1 minute ago, Luke said: Hi, did you explore the stats feature in the video player to learn why it was transcoding? I will do that right now! Link to comment Share on other sites More sharing options...
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