Arch Linux

sp00kins

Member

Registered: 2023-05-13

Posts: 6

H265 video is choppy, lags behind audio

I have footage from a newer GoPro camera shot in 4k but I can't get it to play properly on my install. The video lags, plays at 1 or 2 FPS and in a very low resolution, while the audio runs at the expected speed. I verified that the video will play properly on a windows machine with less powerful hardware so I am doubtful it's related to my machine's specs (8th gen intel i5, integrated graphics, 32GB ram, SSD), and figure I'm missing a dependency for playing video like this.

I have x265 installed.

❯ pacman -Qikk x265
Name            : x265
Version         : 3.5-3
Description     : Open Source H265/HEVC video encoder
Architecture    : x86_64
URL             : https://bitbucket.org/multicoreware/x265_git
Licenses        : GPL
Groups          : None
Provides        : libx265.so=199-64
Depends On      : gcc-libs
Optional Deps   : None
Required By     : ffmpeg  ffmpeg4.4  gst-plugins-bad  libheif
Optional For    : vlc
Conflicts With  : None
Replaces        : None
Installed Size  : 19.13 MiB
Packager        : Evangelos Foutras <foutrelis@archlinux.org>
Build Date      : Sun Mar 6 11:04:01 2022
Install Date    : Mon Mar 7 14:57:33 2022
Install Reason  : Installed as a dependency for another package
Install Script  : No
Validated By    : Signature

x265: 13 total files, 0 altered files

The video player I'm primarily trying to use is mpv, but I've had no success with VLC either. Any suggestions would be welcome. Thanks !

seth

Member

Registered: 2012-09-03

Posts: 60,683

Re: H265 video is choppy, lags behind audio

https://wiki.archlinux.org/title/Hardwa … celeration
https://wiki.archlinux.org/title/Hardwa … ing_VA-API

Also post the output of mpv when playing the video.

Whether or not the "less powerful hardware" provides accelerated HEVC decoding will matter a lot…

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