4k HEVC files freeze when skipping ahead

[casminkey 19]

Been seeing this issue the past few months and can't seem to get a sense of why - some files play fine, others don't. When they don't it's usually a HEVC file but not all HEVC files have issues. When playing a movie or show from the beginning, it's fine. If I resume from the middle or try skipping ahead it just freezes. I tried to mitigate this by converting all my media but that's becoming an issue of it's own that I'm still working through.

So I started a TV show. It started fine so I skipped ahead about 4 minutes and it never resumed. The dashboard shows I am playing it, but the time goes from 0:06 up to about 0:13, then goes back to 0:06 and keeps cycling from there. I've let it sit there for quite a while, 2-3 minutes at times and it never picks up.

Any help is appreciated!  Log files attached.

 

ffmpeg-transcode-8b394419-46cc-4dd1-9ac5-33afd51208f0_1.txt embyserver.txt

[Luke 42077]

Hi @casminkeyare you still seeing this on the latest builds?

[brothom 177]

On 15/09/2025 at 21:22, casminkey said:

Been seeing this issue the past few months and can't seem to get a sense of why - some files play fine, others don't. When they don't it's usually a HEVC file but not all HEVC files have issues. When playing a movie or show from the beginning, it's fine. If I resume from the middle or try skipping ahead it just freezes. I tried to mitigate this by converting all my media but that's becoming an issue of it's own that I'm still working through.

So I started a TV show. It started fine so I skipped ahead about 4 minutes and it never resumed. The dashboard shows I am playing it, but the time goes from 0:06 up to about 0:13, then goes back to 0:06 and keeps cycling from there. I've let it sit there for quite a while, 2-3 minutes at times and it never picks up.

Any help is appreciated!  Log files attached.

 

ffmpeg-transcode-8b394419-46cc-4dd1-9ac5-33afd51208f0_1.txt 12.14 kB · 1 download embyserver.txt 28.12 MB · 2 downloads

I've also noticed some degraded performance when:

4K HEVC on Samsung TV
Seeking (thus also resuming) seems to take forever without transcoding, seems to be an issue within the TV itself

1080p HEVC via Windows 10 / Google Chrome
Is transcoded (but should be natively supported?) thus seeking and resuming is slowed down.
These sometimes a report of playback error, not consistently reproducable on other installations. Maybe pixel format "yuv420p10le?

@casminkeydoes one of the two above examples apply to your case?  

[casminkey 19]

8 hours ago, Luke said:

Hi @casminkeyare you still seeing this on the latest builds?

So I am not seeing this any more but I don't know what has changed. I'm running 4.8.11 and looks like that was installed in March - so like 6 months ago. But just tried a few each of HEVC and HEVC HDR10 files, every one was fine seeking forward and backwards.

[Luke 42077]

Thanks for following up.