Tiny Subtitles With MKV

[Phuein 0]

Hey,

 

Thanks for your guys hard work. Emby is always a pleasure to use. I've noticed that when playing files with embedded subs, like the MKV format, the default size is tiny. Unreadable basically.

 

When I extract the subs into an .srt file ( ffmpeg -i "%~1" "%~n1.eng.srt" ) it works fine, loading the subs as expected.

 

Any chance Emby could work with this better automatically?

 

Thanks

[ebr 15652]

Hi.  I'd be interested in seeing a picture of this but we don't control the display of the subs.  That is handled by the Roku.  You may want to check for any settings in the device itself.

[Phuein 0]

My Roku displays subtitles for anything else just fine. Large and comfortable. So it's not the Roku.

 

Here's a pic with the MKV normally loaded subs, and then one with the subs extracted into an SRT file:

https://imgur.com/AcPFWKJ

https://imgur.com/pIsHSNP

 

Stream #0:2(eng): Subtitle: subrip (default)

[Luke 40018]

Sometimes it is though In this case the Roku video player handles it all for us.

 

Can you provide a sample video for testing?

[Phuein 0]

Sure, any generic MKV test file with subs does the same thing:

https://mkvtoolnix.download/samples/vsshort-vorbis-subs.mkv

 

Make sure Server -> Transcoding -> Allow subtitle extraction on the fly is disabled. It does work when it extracts the subs, but that's not usually wanted, for formatting reasons.

[Luke 40018]

You tested it with that specific file?

[Phuein 0]

No, I have a movie that's MKV. I've had this issue with other MKVs, too. And that specific file shows the same issue, I tested it too.

[Luke 40018]

@@speechles can you try to reproduce the issue with that mkv? Thanks.

[ebr 15652]

My Roku displays subtitles for anything else just fine. Large and comfortable. So it's not the Roku.

 

Here's a pic with the MKV normally loaded subs, and then one with the subs extracted into an SRT file:

https://imgur.com/AcPFWKJ

https://imgur.com/pIsHSNP

 

Stream #0:2(eng): Subtitle: subrip (default)

 

I think your first image is subs being burned in by the server and the second one is the Roku rendering them.

 

Is there an ffmpeg log from your first image?

[speechles 2008]

@@speechles can you try to reproduce the issue with that mkv? Thanks.

 

Sure. It looks like this is related to MOV_TXT. I do not have the issue with SUBRIP. Those properly show up as do SRT. It is only MOV_TXT which appear to have an issue when selected. They properly show in the subtitle picker menu debug as selected and are properly being set as the selectedSubIndex. The problem is somewhere in the loading routine when the subtitle requested in selectedSubIndex is pulled up while loading the content to play. I can chase this down more and figure out exactly where it is dropping the ball. The MOV_TXT do not display. This is an issue.

 

 

As far as size of the subtitles the Roku only does text for subtitles. It has one size you set. This size and more can be modified in the Roku subtitle settings (not Emby settings). Whatever you set for the Roku subtitle settings all of the apps on your Roku will adopt and use.

 

The small/tiny text for subtitles looks like the server is burning these in. It might be scaling up the video but not scaling up the subtitles with it? Difficult to tell without seeing the ffmpeg generated at the same time.

Edited March 3, 2020 by speechles

[Luke 40018]

@@Phuein do they look small in the web app as well?

[Phuein 0]

Looking at the time posted, this should be the one. Attached. Thanks.

2020-03-02 20.48.36.009.txt

[Phuein 0]

@@Phuein do they look small in the web app as well?

 

They look nice and big when played in the web app. Just like my settings for it.

[Phuein 0]

I can confirm again that my settings for Roku subtitles is big and comfortable. Other apps display subs correctly with those settings. Anything tiny is strictly from emby having difficulties with these kind of subs in MKVs. Thanks.

Edited March 5, 2020 by Phuein

[Luke 40018]

Ok thanks, we're looking into it.