Freeze when jumping timeline on web browser

[Chaperone]

Hello,

I have a Docker installation of Jellyfin using a dockercompose.yml:

Code:

version: "3.9"
services:
  jellyfin:
    image: jellyfin/jellyfin:latest
    container_name: jellyfin
    environment:
      TZ: Europe/Madrid
    group_add:
      - "937"
    volumes:
      - /local_vol/docker/jellyfin/config:/config:rw
      - /local_vol/docker/jellyfin/cache:/cache:rw
      - /local_vol/video:/media:rw
      - /local_vol/music:/music:rw
    devices:
      - /dev/dri/:/dev/dri/
    restart: unless-stopped
    network_mode: bridge
    ports:
      - 8096:8096

I have the installed server:

Code:

Server version
10.10.3
Web version
10.10.3
Build version
10.10.3

My hardware is:

• Synology NAS, DS 216+II
  
• CPU INTEL Celeron N3060
  
• RAM 8192 MB
  
• DSM Version: DSM 7.2.2-72806 Update 2
  

As an example, the information of the video I am trying to reproduce:

Code:

File
Filename Movie.mp4
Filepath \\LocalServer
Description MP4 File
Rating 0
Colour Label 0
File's icon 1

Audio
Format AAC
Bit rate mode CBR
Bit rate 384 kb/s
Sampling rate 48.0 kHz
Frame rate 46.875
Compression mode Lossy

Video
Format AVC
Width 1920
Height 800
Bit rate 2 250 kb/s
Aspect ratio 2.40:1
Frame rate mode CFR
Frame rate 23.976

Code:

General
Current Media Information
Codec

Information about what your media or stream is made of.
Muxer, Audio and Video Codecs, Subtitles are shown.

v Stream 0
Codec: H264 - MPEG-4 AVC (part 10) (avc1)
Type: Video
Video resolution: 1920x800
Buffer dimensions: 1920x800
Frame rate: 23.976024
Decoded format:
Orientation: Top left
Color primaries: ITU-R BT.709
Color transfer function: ITU-R BT.709
Color space: ITU-R BT.709 Range
Chroma location: Left

v Stream 1
Codec: MPEG AAC Audio (mp4a)
Type: Audio
Channels: 3F2R/LFE
Sample rate: 48000 Hz
Bits per sample: 32

When I reproduce the video, the player info is the following:

Code:

Playback Info
Player Html Video Player
Play method Direct playing
Protocol https
Stream type Video

Video Info
Player dimensions 1864x1498
Video resolution 1920x800
Dropped frames 0
Corrupted frames 0

Original Media Info
Container mp4
Size 2.6 GiB
Bitrate 2.6 Mbps
Video codec H264 High
Video bitrate 2.2 Mbps
Video range type SDR
Audio codec AAC LC
Audio bitrate 384 kbps
Audio channels 6
Audio sample rate 48000 Hz

When I reproduce a movie from the start, works fine.
But when I try to jump along the timeline, the video or:

• Freezes and eventually continue the playback at that time
  
• Crashes the player and stops the playback
  

This process of moving the cursor along the timeline does not work:

• Edge: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0
  
• Firefox: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0
  
• Chromium: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
  
• Apple iPhone: using iOS 18.2, using the Jellyfin app, https://apps.apple.com/us/app/jellyfin-m...orm=iphone
  
• Samsung Tizen, using https://github.com/Georift/install-jellyfin-tizen
  

I tried with transcoding set to:

• Video Acceleration API (VAAPI), to /dev/dri/renderD128
  
• None
  

In both cases, it does not work. I am not able to jump the timeline.

This process of moving the cursor along the timeline works fine on:

• Swifting iOS
  
• Google TV
  
• Using the Windows app, https://github.com/jellyfin/jellyfin-med...ag/v1.11.1
  

Any ideas what could be wrong?
Thank you.

Here is the log:

Code:

[2025-01-03 19:08:46.176 +01:00] [INF] [79] Emby.Server.Implementations.HttpServer.WebSocketManager: WS "100.0.0.0.1" request
[2025-01-03 19:11:04.044 +01:00] [INF] [73] Jellyfin.Api.Helpers.MediaInfoHelper: User policy for "Chaperone". EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: True EnableAudioPlaybackTranscoding: True
[2025-01-03 19:11:04.918 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: Adding playback tracker : TWxxxxxx
[2025-01-03 19:11:04.918 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.Data.PlaybackTracker: PlaybackTracker : Adding Start Event : 01/03/2025 19:11:04
[2025-01-03 19:11:04.919 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: Creating StartPlaybackTimer Task
[2025-01-03 19:11:04.919 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : Entered
[2025-01-03 19:11:04.938 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: Processing playback tracker : "TWxxxxxx"
[2025-01-03 19:11:07.020 +01:00] [INF] [69] Jellyfin.Api.Helpers.MediaInfoHelper: User policy for "Chaperone". EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: True EnableAudioPlaybackTranscoding: True
[2025-01-03 19:11:20.091 +01:00] [INF] [73] Emby.Server.Implementations.Session.SessionManager: Playback stopped reported by app "Jellyfin Web" "10.10.3" playing "Movie Name". Stopped at "2644774" ms
[2025-01-03 19:11:20.141 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: Playback stop tracker found, processing stop : "TWxxxxxx"
[2025-01-03 19:11:20.142 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.Data.PlaybackTracker: PlaybackTracker : Adding Stop Event : 01/03/2025 19:11:20
[2025-01-03 19:11:20.142 +01:00] [INF] [73] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: Playback stop but TrackedPlaybackInfo not found! not storing activity in DB
[2025-01-03 19:11:24.920 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: session.RemoteEndPoint : "101.0.0.0.0"
[2025-01-03 19:11:24.922 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : event_playing_id    = "dexxxxxx"
[2025-01-03 19:11:24.922 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : event_user_id        = "5xxxxxxxx"
[2025-01-03 19:11:24.922 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : event_user_id_int    = 1
[2025-01-03 19:11:24.922 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : session_playing_id  = ""
[2025-01-03 19:11:24.922 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : session_user_id      = "5xxxxxxxx"
[2025-01-03 19:11:24.923 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : play_method          = "na"
[2025-01-03 19:11:24.923 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : e.ClientName        = "Jellyfin Web"
[2025-01-03 19:11:24.923 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : e.DeviceName        = "Edge Chromium"
[2025-01-03 19:11:24.923 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : ItemName            = "Movie Name"
[2025-01-03 19:11:24.923 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : ItemId              = "dexxxxxx"
[2025-01-03 19:11:24.924 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : ItemType            = "Movie"
[2025-01-03 19:11:24.924 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : Details do not match for play item
[2025-01-03 19:11:24.924 +01:00] [INF] [69] Jellyfin.Plugin.PlaybackReporting.EventMonitorEntryPoint: StartPlaybackTimer : Exited

[TheDreadPirate]

Can you share your full jellyfin logs via pastebin?

[Chaperone]

Hello @TheDreadPirate, thank you for your response.
Here is a sanitized copy of my log:

https://pastebin.com/e2AgLQFc

I removed:
* My IP
* My session ID
* The name of the filenames
* The HTTP errors that subbuzz has while trying to download subtitles. I removed this, because this happens outside the time I was playback the movies. And, because made the log file of 7MiB.

As I said before, when moving the cursor to a different position on the timeline, the playback most of the times: freezes.
And on the web browser (e.g., Edge), after a minute of having the image frozen... The playback continues at the required time.

[TheDreadPirate]

Is this happening on every file? Or just a particular set of files? Since it is direct playing, this is probably an indicator that something is wrong with the files.

We can try remuxing one of the files to see if we can repair the container.

Code:

sudo docker exec -it jellyfin bash
/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags +genpts+igndts -i "/container/path/to/problem/video.mkv" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled newFile.mkv

[Chaperone]

Hello @TheDreadPirate, thank you for your reply.

Sadly, this happens with every single file I have.
I have 100+ video files with similar specifications, and also with FLAC audio files. I have this same issue on all.

The FLAC files have the following specifications:

Code:

Audio
Title: FLAC - Stereo
Codec: FLAC
AVC: No
Layout: stereo
Channels: 2 ch
Bitrate: 1504 kbps
Sample rate: 44100 Hz
Bit depth: 24 bit
Default: No
Forced: No
External: No

Some additional information:

• The NAS is connected to the network using a 1 Gbps ethernet cable to the router
  
• I have a symmetrical 1 Gbps Internet connection
  
• My computer is connected using a Wi-Fi at 1200 Mbps (Wi-Fi 6, 802.11ax)
  

As as commented before, this issue is noticeable using with transcoding ON and OFF.

So, remuxing the files, is not a solution, because it will require me to remux my whole library.

I must admit that I am not 100% sure if this issue started with the latest version 10.10.3 or was before.

[TheDreadPirate]

If the problem are the files, which I have no idea what they are or where you got them from, then remuxing could be the solution.

I'd appreciate if you, at least, tried my suggestion on one file for testing to ensure we eliminate that as a factor. Since this is happening on multiple clients, and the files are direct playing, there aren't many Jellyfin specific factors in the equation.

[Chaperone]

Thank you very much for your reply and support.

I tried with:

Code:

sudo docker exec -it jellyfin bash
/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags +genpts+igndts -i "/container/path/to/problem/video.mkv" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled newFile.mkv

I tried on Edge and Firefox, with different behaviors.
 
On Edge using either MP4 or MKV remuxed:

• I can move the time cursor for the first time, and if I try to move it again, the video freeze.
  
• After the video continue the playback, I can move AGAIN the cursor, and the video continues on the first time... But if I try again, the video freezes again.
  
• I have the same behavior either using the MP4 or MKV video
  
• Maybe is faster the reposition of the time cursor while using MKV
  

On Firefox using MP4:

• Using the MP4 if I move the cursor over the timeline, two things could happen:
  
• 1. The video just advances ~1 minute
  
• 2. The video freezes, and never continue
  

On Firefox using MKV remuxed:

• Using the remuxed MKV file, work as OK. I can move the time cursor, and the video works.
  

The original MP4 video:

Code:

Playback Info
Player Html Video Player
Play method Direct playing
Protocol https
Stream type Video

Video Info
Player dimensions 1868x1466
Video resolution 1920x1012
Dropped frames 0
Corrupted frames 0

Original Media Info
Container mp4
Size 2 GiB
Bitrate 2.6 Mbps
Video codec H264 High
Video bitrate 2.2 Mbps
Video range type SDR
Audio codec AAC LC
Audio bitrate 384 kbps
Audio channels 6
Audio sample rate 48000 Hz

The remixed MKV video:

Code:

Playback Info
Player Html Video Player
Play method Direct streaming
Protocol https
Stream type HLS

Video Info
Player dimensions 1868x1466
Video resolution 1920x1012
Dropped frames 0
Corrupted frames 0

Direct Streaming Info
Video codec H264 (direct)
Audio codec AAC

Original Media Info
Container mkv
Size 2 GiB
Bitrate 3.0 Mbps
Video codec H264 High
Video bitrate 2.6 Mbps
Video range type SDR
Audio codec AAC LC
Audio bitrate 320 kbps
Audio channels 2
Audio sample rate 48000 Hz

Could it be the buffer takes TOO much time to fill the reposition of the cursor?
For testing, how can I increase the playback buffer?

By the way, I am using Direct Playing, because my NAS CPU does not support transcoding... Or I was not able to make it work.

Thank you for any ideas you could share.

[TheDreadPirate]

Can you try switching the network mode to host?

[Chaperone]

Hello,
Following this post, https://jellyfin.org/docs/general/instal...container/, I tried the following modification to my docker-compose.yml:

Code:

services:
  jellyfin:
    image: jellyfin/jellyfin:latest
    container_name: jellyfin
    environment:
      TZ: Europe/Madrid
    group_add:
      - "937"
    volumes:
      - type: bind
        source: /volume1/docker/jellyfin/config
        target: /config
        read_only: false
      - type: bind
        source: /volume1/docker/jellyfin/cache
        target: /cache
        read_only: false
      - type: bind
        source: /volume1/video
        target: /media
        read_only: false
      - type: bind
        source: /volume1/music
        target: /music
        read_only: false
      - type: volume
        source: exclude
        target: /media/#recycle
        read_only: true
      - type: volume
        source: exclude
        target: /media/#snapshot
        read_only: true
      - type: volume
        source: exclude
        target: /music/#recycle
        read_only: true
      - type: volume
        source: exclude
        target: /music/#snapshot
        read_only: true
    devices:
      - /dev/dri/:/dev/dri/
    restart: unless-stopped
    network_mode: "host"

volumes:
  exclude:

Notice I changed to network_mode: "host".
But the issue still present. 

Any other ideas to try? Thank you!

[TheDreadPirate]

Try changing all your bind mounts to plain volume mounts.

---

Wait. In your opening post it was a volume mount.

Hmmmmm.