Why remuxing?

[Alliyance]

Just wonder why I have a remuxing, transcode when before it was direct playing on Chromecast? Usually the log file says why but since the update, it doesn't say anymore or it's a code that I don't understand. 

Log:

Code:

[2024-06-28 02:13:37.996 +00:00] [INF] [203] Jellyfin.Api.Helpers.MediaInfoHelper: User policy for "fred". EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: False EnableAudioPlaybackTranscoding: False
[2024-06-28 02:13:38.124 +00:00] [INF] [156] Jellyfin.Api.Helpers.MediaInfoHelper: User policy for "fred". EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: False EnableAudioPlaybackTranscoding: False
[2024-06-28 02:13:38.840 +00:00] [INF] [228] MediaBrowser.MediaEncoding.Transcoding.TranscodeManager: "/usr/bin/ffmpeg" "-analyzeduration 200M -probesize 1G -fflags +genpts -f matroska  -i file:\"/home/alliyance/files/Movies/Furiosa.A.Mad.Max.Saga.2024.mkv\" -map_metadata -1 -map_chapters -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 copy -bsf:v h264_mp4toannexb -start_at_zero -codec:a:0 copy -copyts -avoid_negative_ts disabled -max_muxing_queue_size 2048 -f hls -max_delay 5000000 -hls_time 6 -hls_segment_type mpegts -start_number 0 -hls_segment_filename \"/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93%d.ts\" -hls_playlist_type vod -hls_list_size 0 -y \"/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93.m3u8\""
[2024-06-28 02:13:39.586 +00:00] [INF] [228] MediaBrowser.Controller.MediaEncoding.TranscodingJob: Stopping ffmpeg process with q command for "/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93.m3u8"
[2024-06-28 02:13:39.701 +00:00] [INF] [228] MediaBrowser.MediaEncoding.Transcoding.TranscodeManager: FFmpeg exited with code 0
[2024-06-28 02:13:39.702 +00:00] [INF] [228] MediaBrowser.MediaEncoding.Transcoding.TranscodeManager: "/usr/bin/ffmpeg" "-analyzeduration 200M -probesize 1G -ss 01:38:49.465 -fflags +genpts -f matroska  -i file:\"/home/alliyance/files/Movies/Furiosa.A.Mad.Max.Saga.2024.mkv\" -map_metadata -1 -map_chapters -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 copy -bsf:v h264_mp4toannexb -start_at_zero -codec:a:0 copy -copyts -avoid_negative_ts disabled -max_muxing_queue_size 2048 -f hls -max_delay 5000000 -hls_time 6 -hls_segment_type mpegts -start_number 988 -hls_segment_filename \"/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93%d.ts\" -hls_playlist_type vod -hls_list_size 0 -y \"/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93.m3u8\""
[2024-06-28 02:13:45.391 +00:00] [INF] [285] MediaBrowser.MediaEncoding.Transcoding.TranscodeManager: FFmpeg exited with code 0

FFmpeg

Code:

[out#0/hls @ 0x55aa722d2c40] Codec AVOption threads (set the number of threads) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Output #0, hls, to '/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93.m3u8':
  Metadata:
    encoder        : Lavf60.16.100
  Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 23.98 fps, 23.98 tbr, 90k tbn (default)
  Stream #0:1: Audio: aac (LC), 48000 Hz, 5.1, fltp (default)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
size=      0kB time=00:00:00.00 bitrate=N/A speed=N/A   
[hls @ 0x55aa7226f080] Non-monotonic DTS in output stream 0:0; previous: 533603070, current: 533599316; changing to 533603071. This may result in incorrect timestamps in the output file.
[hls @ 0x55aa7226f080] Non-monotonic DTS in output stream 0:0; previous: 533603071, current: 533603070; changing to 533603072. This may result in incorrect timestamps in the output file.
[hls @ 0x55aa7226f080] Opening '/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93988.ts' for writing
[hls @ 0x55aa7226f080] Opening '/dev/shm/1011/jellyfin/transcodes/b12401affdf65f854659892e1e0f4e93989.ts' for writing