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+--- Thread: Video Stutterin, is this a transcoding issue? (/t-video-stutterin-is-this-a-transcoding-issue)
Video Stutterin, is this a transcoding issue? - Roguiber - 2025-05-21
Hi Team,
I recently download jellyfin in my new setup (NVME, 9800X3D and a 5080) and I use it to connect to my LG Oled TV, using the jellyfin app.
When I start Watching a movie, it keeps buffering even if I let it buffer for a while, when I hit play it still buffers. This didn't happen with my old set-up.
I have tried to enable hardware transcoding for all plugins, but it also didn't help. Any suggestions?
Also, why are subtitles and audio codecs not supported? Do I need to download it on the server?
Log attached. Not sure how to upload the ffmpeg log as it exceeds the forum limit
RE: Video Stutterin, is this a transcoding issue? - bitmap - 2025-05-21
Could you please post your log to privatebin.net? Makes it easier to parse. Seems to be transcoding just fine (6x+).
Quote:I have tried to enable hardware transcoding for all plugins, but it also didn't help.
Yup. Find your CPU/GPU in the options here: https://jellyfin.org/docs/general/post-install/transcoding/hardware-acceleration/
Follow those instructions to ensure your host is set up correctly. I'd recommend uploading the log first so we can take a look.
Quote:Also, why are subtitles and audio codecs not supported? Do I need to download it on the server?
No. This is all because of your client (and media). Unless you have a device capable of direct playback of Dolby TrueHD Atmos, the audio will be transcoded. The entire media file is being transcoded because of the subtitles. Bluray subs (PGS - presentation graphic stream) are not supported in direct play with the vast majority of clients. Turn off your subtitles and I'd guess -- if your client is capable of playing 4K HDR -- only the audio will be transcoded.
You should avoid media (or re-encode lossless sources) with codecs you can't play. If you're running a TV with just the internal speakers, you will NOT notice a difference between Dolby TrueHD Atmos and AAC if the bitrate is in the sweet spot. Also avoid PGS, VOB, DVD, complex ASS/SSA, and VTT subs if you want to avoid transcoding.
RE: Video Stutterin, is this a transcoding issue? - Roguiber - 2025-05-21
Hi Bitmap, thank you for the detailed response
Here is the log and the ffmpeg.
Regarding the audio, my TV if I'm not mistaken my LG C3 does not support Dolby TrueHD Atmos, but I do have a 7.1 set-up to play the sound.
About the subtitles. Most of the media I watch already comes with subtitles and since english is not my main language I use them. How can I play the subtitles but avoid transcoding, Is there a way to disable the media subtitles and use one that does not trigger transcoding?
I will check the documentation you shared in detail
RE: Video Stutterin, is this a transcoding issue? - Roguiber - 2025-05-22
I tested disabling the subtitles. It did start direct streaming but it still has stuttering issues. What could be the reason?
RE: Video Stutterin, is this a transcoding issue? - bitmap - 2025-05-22
Are you hard-wired or using WiFi? LG TVs have real garbage ethernet hardware. I have found WiFi a better bet. With that average bit rate, you might be maxing out the 100 Mb/s limit at peak bit rate.