Subtitles are causing constant Buffering

Hi,

 

i got my PMS installed on a Thecus N4800eco NAS and a ATV3. Everything is running fine and smoothly but as soon as i activate Subtitles it beginns to Buffer, all the time, with every file.

Any one who knows why and how to fix it?

Subtitles will get "burned" into the video stream by PMS, this involves decoding, adding subtitles, re-encoding - basically the same a transcoding. Small scale NASs are not powerful enough to do this in real time... I guess, this is the issue you are facing here.

A fix? I don't have one...

And thats it? Don't get me wrong, i love Plex but without subtitles its not so fun sometimes.^^ Are there any Plans for other Subtitle Streaming, so that it do not get burned in?

And thats it? Don't get me wrong, i love Plex but without subtitles its not so fun sometimes.^^ Are there any Plans for other Subtitle Streaming, so that it do not get burned in?

You can remux them into MP4 file to avoid transcoding but it is a pain in the @ss, especially with episodes. 

And thats it? Don't get me wrong, i love Plex but without subtitles its not so fun sometimes.^^ Are there any Plans for other Subtitle Streaming, so that it do not get burned in?

I guess you have to direct this question to the *real* Plex guys... as you know, this is a "third party client" - I have no idea about the roadmap/upcoming changes to PMS.

I have remuxed a mkv Movie into MP4 and placed the MP4 and .srt File in one Folder. Force Transcode is disabled but its still Buffering. Any other Settings that i could check or more ideas?

It makes no difference what format the video file is, mkv or mp4, if the subtitles are in an external file then the video will always need to be transcoded to include the subs. What you need to do is when you remux the mkv into a mp4 file you need to add the subtitles to the mp4 file as a new track, which program did you use to remux the file? Then once the subtitles are part of the mp4 file you can hold down select on the remote during playback and select the subtitles from there.

Roidy has this spot on, if you wish to run plex on a very underpowered NAS unit you need to make sure you are making the videos and subtitles into a native format, as he stated making them into an MP4 with the subtitles as a track within it will keep this from having to be slip streamed into the movie and thus making the nas not need to transcode. 

Iam using ffmpeg because i want to make a OneClick solution via batch file, which is already working but without subtitles.^^ Can you explain what you mean by adding it as a new track?

Iam using ffmpeg because i want to make a OneClick solution via batch file, which is already working but without subtitles.^^ Can you explain what you mean by adding it as a new track?

For MP4 you already have created and want to add in the subtitles just use MP4Tools, it wont do a full re-encode.  Just drag movie into it, along with the subtitle and it will create a new file with both in there. 

The AppleTV is the only Apple Hardware i got and MP4Tools is MacOS only.^^ I would prefer a ffmpeg Solution anyway or atleast any other Command Line Interface Program so i can stick to my batch file :)

The AppleTV is the only Apple Hardware i got and MP4Tools is MacOS only.^^ I would prefer a ffmpeg Solution anyway or atleast any other Command Line Interface Program so i can stick to my batch file :)

Does google still work on non Apple HW? :)

http://ffmpeg.gusari.org/viewtopic.php?f=16&t=905

..and other similar

Yes, Google is still working but its not as easy as its described there.^^ You have to set these parts for ffmpeg to make it work which is rarely documented :( And its just working with .ass Subtitles... much more complicated than expected.^^

set FONTCONFIG_FILE=fonts.conf
set FONTCONFIG_PATH=D:\Programme\ffmpeg\bin
 

But at least I got it working now even with mkv without re-encoding. Its probably the best workaround for this Problem but I still hope that there will be something better from the devs.

I have a similar problem. I am using Synology DS1813+ to run Plex Media Server and PlexConnect on an Apple TV3.

Constant buffering on an 1080p file if I enabled the external Subtitles.

If I switch it off, no buffering.

No much buffering on a 720p file even if I enabled the external subtitles so I assumed the Synology was able to transcode it well enough ?

No much buffering on a 720p file even if I enabled the external subtitles so I assumed the Synology was able to transcode it well enough ?

that seems like a correct statement.

You can verify CPU utilisation by running "top" (in a shell connected to your nas).

Once you hit play on the aTV you will see the CPU instantly hitting 97+% with a 1080p, try the same with a 720p. 

chinesealbumart: media container/codec, subtitle format?

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