Reenabling subtitles in LG TV app does not work

[inorick 1]

When play a video file with (h265 + VobSub subtitles) from my Synology NAS on my LG TV (C1), Emby uses transcoding to burn in the subtitles. I assume this is due to the TV not supporting the subtitle format. If I disable the subtitles, Emby correctly switches back to direct playback. However, from that point on it is not possible to reenable the subtitles again without completely restarting playback. The setting has no effect and playback never (10+ minutes) switches back from direct to transcoding.

Emby Server v4.7.12.0
Emby for TV v1.0.37

embyserver.txt

Edited May 26, 2023 by inorick
Added log file

[Abobader 3470]

Hello inorick,

** This is an auto reply **

Please wait for someone from staff support or our members to reply to you.

It's recommended to provide more info, as it explain in this thread:

Thank you.

Emby Team

[Luke 42083]

Hi, that’s odd. We’ll take a look at this. Thanks for reporting.

[inorick 1]

Thanks. Let me know if you need more info or help reproducing this.

[PaFe93 0]

Hi

i've got the same problem, no matter client app (web, android TV)

If the subtitle are in PGS format or ASS format, emby try to burn in subtitles into video and fail playback

PGS format log

15:03:36.893 subtitle input filter: decoding size 1920x1080
15:03:36.893 Auto-inserting subfeed filter
15:03:36.893 Auto-inserting graphicsub2video filter
15:03:36.895 Impossible to convert between the formats supported by the filter 'hwupload@f7' and the filter 'auto_scale_2'
15:03:36.896 Error reinitializing filters!
15:03:36.896 Failed to inject frame into filter network: Function not implemented
15:03:36.897 Error while processing the decoded data for stream #0:3
15:03:36.922 [aac @ 000001d7dd69fa80] Qavg: 35641.027
15:03:36.922 [aac @ 000001d7dd69fa80] 2 frames left in the queue on closing
15:03:36.938 Conversion failed!

ASS format log

15:20:18.048 Stream #0:3(fre): Subtitle: ass (default) (forced)
15:20:18.048 Metadata:
15:20:18.048 title : Forced
15:20:18.048 DURATION : 01:40:01,244000000
15:20:18.048 Stream #0:4(fre): Subtitle: ass
15:20:18.048 Metadata:
15:20:18.048 title : Full
15:20:18.048 DURATION : 01:49:06,053000000
15:20:18.049 [subtitles@f2 @ 0000026d70074f00] libass API version: 0x1600000
15:20:18.049 [subtitles@f2 @ 0000026d70074f00] libass source: commit: 0.16.0-0-g1af6240c5d1e499326146e0b88c987e626b13c23
15:20:18.051 [subtitles@f2 @ 0000026d70074f00] Shaper: FriBidi 1.0.12 (SIMPLE) HarfBuzz-ng 4.3.0 (COMPLEX)
15:20:18.059 [subtitles@f2 @ 0000026d70074f00] Loading font file 'C:\xxxxxx\programdata\fonts\GoNotoCurrent.ttf'
15:20:18.071 [subtitles@f2 @ 0000026d70074f00] Using font provider directwrite (with GDI)

 

[PaFe93 0]

Hi

in Transcoding, i've check "Allow subtitle extraction on the fly" and for now it resolve the problem

[Luke 42083]

2 hours ago, PaFe93 said:

Hi

in Transcoding, i've check "Allow subtitle extraction on the fly" and for now it resolve the problem

Why did you uncheck it in the first place?

[inorick 1]

@PaFe93I think your problem is different.
a) The burning in of subtitles works for me initially. It is only after disabling them once that I cannot enable them again.
b) I never disabled "Allow subtitle extraction on the fly"

I See the following (see screenshots):
First, subtitles are enabled and are burned in (state a1 and a2)
Then, I disable subtitles and embed switches to direct play (state b1 and b2)
Last, I try to reenable subtitles but it does not work (state c1 and c2)