Server Version#: 1.18,0.1846
Player Version#: All Versions / PS4, Chromecast, Webbrowser
Since last update each time transcoding is used there is the issue that the picture gets pixelated for the first 60-90sec. It‘s so bad that you can‘t see whats going on in the video.
After these 60-90sec the picture turns back to normal.
Only happens when transcoding and only if HW transcoding is enabled.
I transcode a 1080p file to 720p 4mbits.
System is Linux, CPU is a Intel CPU, GPU is the Intel integrated iGPU.
I have Synology DS 218+, and noticed the same issue when running a hardware-aware version of ffmpeg 4 and using constant ratefactor straight from the command line. I did not have the issue when running at constant quantizer.
Right, what I was trying to say is I think it’s an issue with the version of ffmpeg Plex is using (a new version of ffmpeg was recently released and I believe Plex switched to it). I’ve encoded with both Plex and a standalone version of ffmpeg on my Synology.
Plex with hardware transcoding on Synology…pixelated 60-90 seconds
ffmpg with hardware transcoding on Synology…pixelated 60-90 seconds
Plex with software transcoding on Synology…good
ffmpeg with software transcoding on Synology…good
The pixelation you are describing sounds like exactly what I’m seeing, which makes me suspect it’s not unique to QNAP or Synology. Do you know if QNAP is using VAAPI to do hardware transcoding?
Yes, it’s an issue with VAAPI on linux based platforms, present in both our transcoder, and upstream ffmpeg. We’re investigating, and will hopefully have some news soon.