Fire stick 4k

[Crunch25]

Hi all, sorry if this has already been discussed but I did look around and couldn't find anything. I have a 4K max fire stick and for the most it's absolutely fine, but when it comes to playing 4k I get the sound but that's all.... The screen remains blank! 

Now I know it's not the device or the TV at fault as everything else on 4k such as TV and Netflix etc is fine... Is there I player I can install to fix this as vlc does the same thing or is there anything else I can do/download to solve this frustrating issue?

Many thanks 🙏

[theguymadmax]

This is a known issue caused by a bug in ExoPlayer on devices using the MT8696 MediaTek chipset, which is found in Fire TV 4K Sticks and the latest Google streamer. It occurs when playing media that includes both Dolby Vision and HDR10+. Here are several threads related to this.

AndroidTV
https://github.com/jellyfin/jellyfin-and...ssues/2630 (old issue)
https://github.com/jellyfin/jellyfin-and...ssues/4021 (new issue)

Exoplayer/AndroidX Media
https://github.com/google/exoplayer/issues/11096 (old issue)
https://github.com/androidx/media/issues/1895 (new issue)

Workarounds:

1. Remove DV Metadata: Follow the steps in this forum thread to strip out the Dolby Vision metadata.
   
   Code:

   /usr/lib/jellyfin-ffmpeg/ffmpeg -y -hide_banner -stats -fflags +genpts+igndts -loglevel error -i "/path/to/dvhdr10+_video.mkv" -map 0 -bsf:v hevc_metadata=remove_dov=1 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled hdr10_video.mkv
2. Remove HDR10+ Metadata:
   
   Code:

   /usr/lib/jellyfin-ffmpeg/ffmpeg -y -hide_banner -stats -fflags +genpts+igndts -loglevel error -i "/path/to/dvhdr10+_video.mkv" -map 0 -bsf:v hevc_metadata=remove_hdr10plus=1 -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts disabled dv_video.mkv
3. Force Transcoding on ATV: Reduce the bitrate or set audio to stereo to trigger transcoding on the client.
   
4. Use Kodi as an external player for the ATV client: Kodi allows you to choose the format compatible with your TV. You can disable Dolby Vision or HDR10+ as needed.
   
5. Use Kodi with Jellyfin Plugin: Kodi allows you to choose the format compatible with your TV. You can disable Dolby Vision or HDR10+ as needed.