Jellyfin is designed to play almost any video file in existence. But when a movie refuses to play or constantly pauses to buffer, the problem usually lies with your TV, not the server. Here is how to fix playback issues.
Overview
If your TV cannot natively understand the video file you are trying to play (e.g., trying to play a 4K HEVC file on a 10-year-old 1080p Roku), Jellyfin has to "Transcode" it. Transcoding means the LocalNode converts the file into a compatible format in real-time. If the LocalNode can't convert it fast enough, you get buffering.
You press play, the screen goes black, and you get an error message about an incompatible format.
The Fix:
- Ensure Hardware Transcoding is enabled. If transcoding is turned off, Jellyfin simply refuses to play files the TV doesn't understand. Follow our Hardware Transcoding Guide to ensure Intel QuickSync is checked.
Issue 2: Constant buffering every 10 seconds
The movie plays, but it pauses constantly with a spinning loading circle.
The Fix:
- Click the Gear icon (Settings) in the Jellyfin video player.
- Click Playback Data (or Show Stats). Look at the "Play Method".
- If it says "Direct Play": Your Wi-Fi is too slow. A 4K movie requires about 80 Mbps of consistent Wi-Fi bandwidth. Try plugging your TV in via ethernet, or lower the quality by clicking the Gear icon > Quality > 1080p - 10 Mbps.
- If it says "Transcoding": The LocalNode is struggling to convert the file fast enough. This usually happens if you are trying to transcode a massive 4K HDR movie. Again, click the Gear icon > Quality and manually select a lower bitrate (like 720p), which requires less processing power.
⚠️ Warning: Never try to transcode 4K movies if you can avoid it. If your TV requires transcoding to play 4K, you should instead download the 1080p version of the movie, which will Direct Play flawlessly.
Issue 3: Video stutters only when subtitles are on
The movie plays perfectly, but the moment you turn on English subtitles, the video begins to buffer heavily.
The Fix:
Image-based subtitles (PGS or VOBSUB, commonly ripped from Blu-rays) cannot be overlaid onto video by most TVs. Jellyfin is forced to "burn" the subtitles into the video frame by frame, which destroys the CPU.
- You must use text-based subtitles (
.srt files). - Follow our guide to set up Bazarr, which will automatically download lightweight .srt files that will Direct Play on any TV.
Issue 4: Video plays perfectly, but there is no sound
This happens when the video file contains an advanced surround sound format (like TrueHD 7.1 or DTS-HD Master Audio), but your TV only has cheap stereo speakers.
The Fix:
- While the movie is playing, click the Audio/Subtitle menu (the speech bubble icon).
- Look at the Audio Track list. If the selected track says "TrueHD" or "DTS", switch it to the track that says "AC3 5.1" or "AAC 2.0".
- Almost all high-quality movie rips include a secondary, standard audio track specifically for normal TVs.
Need help? Email hello@localnode.tech or visit localnode.tech/contact.