jellyfin/ffmpeg: added a guide to concatenate videos

wiki/jellyfin.md

@@ -13,3 +13,11 @@ You can add IP-TV under `Live TV` in the administration panel.
 To include a m3u IP-TV stream just put the file on the server or copy its URL
 and add it under `Live TV`.
 After that make sure to setup `DVR` to your liking to record.
+
+## Handling of movies consisting of multiple files
+
+Jellyfin does not have the capability to seamlessly transition between multiple
+files of a movie.
+The easiest way to achieve a seamless movie experience is to concatenate the two
+movie files.
+This can be done with [ffmpeg](./linux/ffmpeg.md).

wiki/linux/ffmpeg.md

@@ -0,0 +1,20 @@
+# ffmpeg
+
+[ffmpeg](https://www.ffmpeg.org) is a free and open-source suite consisting of
+many audio and video tools and libraries.
+
+## Concatenate multiple video files with matching audio-tracks
+
+First you need to create a text file `files.txt` that includes a line for every
+video you want to concatenate in the form of:
+
+```shell
+file '<path to the video>'
+```
+
+Make sure the videos are in correct order.
+To concatenate these video files you can run:
+
+```shell
+ffmpeg -f concat -safe 0 -i files.txt -map 0 -c copy output.mp4
+```