Server Version#: 1.20.3.3483 (Win & Mac) Player Version#: Platform 3.8, Player 5.2.1 TV: lg-49UJ635V (latest firmware 05.80.65) For any direct play-supported video file, whenever my audio needs to be transcoded (HDMI-CEC-connected soundbar supports AC3 only: Sony HT-S20R), srt subtitles cause vid…

[Edit] ~Just wanted to say they version 5.3.1 fixed constant buffering problem, thank you!~ I still would love to know how likely is it for WebOS app to not have to burn subtitles (and transcode video) when it’s transcoding audio…

Actually, no. 5.3.1 hasn’t fixed anything. This (unnecessary!) transcoding starts to buffer like crazy every time one rewinds or fast forwards, shows menu(s) or resumes from title screen. Pausing seems safe, but I haven’t tested it too thoroughly. Possibly related to LG webOS Plex 3.60.1 Buffering …

I’m observing similar issues. Turning subtitles ON leads to disaster. Sound disappears, server crashes etc.

Results I’m seeing here: Direct Play for both audio and video, no subs: OK Direct Play for both audio and video, SRT subs: OK Direct Play for video, transcoded audio, no subs: low server CPU (audio transcoding only), playback fine Direct Play for video, transcoded audio, SRT subs: both audio and…

[image] daern: Direct Play for video, transcoded audio, SRT subs: both audio and video now transcoded, CPU through roof, continuous buffering Yep, this is exactly my experience: whenever audio is transcoded, srt unnecessarily forces transcoding of video (which otherwise doesn’t require transc…

[image] Matt_K: srt unnecessarily forces transcoding of video (which otherwise doesn’t require transcoding) I read a Plex staffer who stated that this was due to maintaining synchronisation of audio and subtitles with the stream tech available. Once the audio is transcoded, this sync is lost …

Does it make any difference if the SRT subtitles are muxed into the original video file, vs. being sidecar files? I have some vague memory that it matters on some TVs - maybe LG? Maybe Samsung? But I may be conflating issues, and I’m not finding the source thread(s) quickly now.

[image] Volts: Does it make any difference if the SRT subtitles are muxed into the original video file, vs. being sidecar files? Good question and no: it makes no difference. Also checked it’s the same with pgs (which I guess genuinely force video transcode as opposed to srt, which shouldn’t …

[image] daern: this was due to maintaining synchronisation of audio and subtitles with the stream tech available. Once the audio is transcoded, this sync is lost and baking the subtitles into the video stream directly is the only way to guarantee sync with audio. AFAIK, this was fixed in Andr…

Subtitle-related transcoding causes impossible stuttering

Plex Players Smart TVs

Matt_K November 28, 2020, 3:18am 11

Partially-Transcoded Direct Stream not working as designed

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Subtitle-related transcoding causes impossible stuttering

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