SOLVED: It is not possible to fast-forward or rewind a series; it always jumps to the beginni

[Jelly-User]

Hello,
I have a problem with a series that I converted from BluRay, just like other series before.
Videocodec h.265, original audio tracks, subtitles as srt
When I press back in an episode, it jumps to the beginning of the episode. If I want to “fast forward” from the beginning of the episode, it starts again at the beginning.
Why is that?
Jellyfin runs as a docker in UnRaid, the latest version is installed. I've also already closed and restarted Docker, but to no avail.
Most of the episodes in the series are less than 30 minutes long. Could that be the reason? Is there somewhere I can change this?
Playback is via an NVidia Shield Pro.
Thanks for your help :-)

[TheDreadPirate]

What app did you use to create the files? And what container are they in?

[Jelly-User]

I use Handbrake, convert the footage to h.265, take the audio from the original file and use MKVToolNix to create a new .mkv file, just like I always do.
There is nothing special about the files, I have already used the same settings and procedures for many series.
On the PC, I can go back and forth using the Jellyfin app, and then start again, but on the TV, using NVidia Shield Pro with the Android app 0.17.7, it doesn't work, at least not with this series. On the PC, I had virtually placed the cursor at the point where I wanted to continue watching, on the TV I had gone to “continue watching” and the episode had then started again from the beginning, even if I selected a different chapter.
My approach to creating.
Use makeMKV to play BluRay on PC, use Handbrake to convert the episodes, use MKVToolNix to mix picture and (original) sound together. Use Filebot to name the episodes. Then use MetaX to tag the episodes, similar to mp3 files. Done.

[TheDreadPirate]

Unrelated, Handbrake can pass through audio without transcoding to the output file.  You don't have to use MKVToolnix to remux with the original audio.

   

If you're using an Nvidia GPU, I can send you the Handbrake preset I used to use when I was using Handbrake to convert my media to HEVC.

Back to your issue.  It sounds like the container is borked in some way.  If you open a bash shell for the jellyfin container, you can use ffmpeg on the command line to remux and fix any container issues.  No re-encoding.

Code:

/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags +genpts+igndts -i "/path/to/your/video.mkv" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts auto newFile.mkv

[Jelly-User]

Thank you, thank you, thank you, that helped.
I had a script created for Windows (I'm sitting in front of it right now and I still have a copy of the files on the computer; besides, it's the most powerful one here with me, otherwise everything runs on Linux) and had the files processed as a batch, uploaded them back to Unraid, had Jellyfin update the metadata, tested it on the TV, and it works. TOP :-)
Here is the script as a batch file in case anyone else has problems:

Code:

@echo off
setlocal enabledelayedexpansion

rem Pfad zu deinem Ordner mit den Videodateien
set "input_folder=C:\path\to\your\video\folder"
set "output_folder=C:\path\to\your\output\folder"

rem Stelle sicher, dass das Output-Verzeichnis existiert
if not exist "!output_folder!" mkdir "!output_folder!"

rem Schleife durch alle MKV-Dateien im Ordner
for %%f in ("%input_folder%\*.mkv") do (
    rem Extrahiere nur den Dateinamen ohne Pfad und ohne Dateierweiterung
    set "filename=%%~nf"
    rem Führe den ffmpeg-Befehl aus
    ffmpeg -fflags +genpts+igndts -i "%%f" -map 0 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts auto "!output_folder!\!filename!_new.mkv"
)

echo Alle Dateien verarbeitet!
pause

ffmpeg was installed as a system variable, then the script works without problems.


I know that you can basically loop the sound with Handbrake, which is what I did at the beginning, but it seemed to me that the sound was somehow processed, so I prefer to get it from the original mkv file and mix it into the newly created video file.
After that, I run a script that correctly names the tracks (audio and subtitles), e.g. German DTS 5.1 or German forced. The correct flags are also set at the same time. You can also do this with MKVToolNix, but a script makes it significantly faster.
Thanks for your help :-)