Some movies are stuttering

[mlapoint 10]

I have Emby Premier running the latest version on Pop_OS 22.04 LTS (based on Ubuntu 22.04 LTS) running on 2020 Thelio with a 2 GB Radeon RX 550 video card. My media files are on Synology DS 1522+ NAS. The NAS is mounted correctly through fstab. I have a gigabit home network.

The problem I am having is that any 4k movies I try to play is stuttering. My Thelio has a video card so I believe it should be able to handle any video transcoding (although I do not believe I am doing that because I believe I am playing them as direct play).

I believe the stuttering is from it trying to transcode that data, but I do not know how to turn off the transcoding. Any help would be great.

Thank You,

Mike LaPointe

[Luke 42077]

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

[mlapoint 10]

Ok, I downloaded at test 4k video and played it.  It stuttered again.  I played it on my laptop this time, but I don't think that matters as I have played it on my Roku as well as my laptop in the past and it reacted the same.

I have attached two log files. The first is embyserver.txt and I do not think that is the problem, and the second is ffmpeg-transcode-43....txt.

My understanding is that my Roku can play 4k video and my TV can as well. I'm not sure if my laptop can, but either way, it is stuttering just as my Roku/Samsung Series 7 TV combo is.

Thank You,

Mike

ffmpeg-transcode-43ba8c23-25e8-4e38-8e2b-57ecd39a7819_1.txt embyserver.txt

[Lessaj 467]

The transcoding cannot keep up with this file, only around 0.75x. If I'm seeing this right it's 114 Mbps which is really high even for h264 (I guess it's some kind of demo?) and it looks like it's transcoding to 60 Mbps. But is there really a need to do this? The only reason it's transcoding in the first place is because of your bitrate limit. I see you have it set to 60 in the server log. It should be able to direct play this file from the video track perspective but more than likely the audio will still need to be trasncoded for Chrome, I see it's going from ac3 to aac, which is a very minimal operation. Try setting your bitrate to auto or max it out on the device. I am concerned that you will face stuttering because each of these ts segments were taking more than 3 seconds to deliver and that should be how long they are - I think if only transcoding audio it's actually 6 seconds, so in that case it would be okay but the chunks will get larger if not transcoding the video so YMMY.

Basically not enough horsepower to transcode the video, not enough network speed to deliver segments fast enough.

&TranscodeReasons=ContainerBitrateExceedsLimit

 

[Luke 42077]

@mlapointhas this helped?

[mlapoint 10]

Yes, Thank you!