Hi, when playing youtube videos hardware video acceleration seems to gain absolutely nothing on my machine or I've done something wrong ;). Am I missing something? The percent values playing a youtube video with and without enhanced- h264ify are raw estimated values, based upon my impression, so I consider those values as quasi equal, the minimal difference is neglectable. https://addons.mozilla.org/firefox/addon/enhanced-h264ify/ https://chrome.google.com/webstore/detail/enhanced-h264ify/omkfmpieigblcllmk... $ firefox --safe-mode https://www.youtube.com/watch?v=wqLEg0MsSMQ & top %Cpu(s): 14 us 22% Web Content 14% firefox $ firefox https://www.youtube.com/watch?v=wqLEg0MsSMQ & top [x] Block VP8 [x] Block VP9 [x] Block AV1 %Cpu(s): 13 us 20% Web Content 15% firefox $ google-chrome-stable https://www.youtube.com/watch?v=wqLEg0MsSMQ & top [x] Block VP8 [x] Block VP9 [x] Block AV1 %Cpu(s): 8 us 14% chrome 13% chrome [ ] Block VP8 [ ] Block VP9 [ ] Block AV1 %Cpu(s): 11 us 15% chrome 14% chrome $ hwinfo --cpu | grep Model | sort -u; vainfo Model: 6.60.3 "Intel(R) Celeron(R) CPU G1840 @ 2.80GHz" vainfo: VA-API version: 1.5 (libva 2.5.0) vainfo: Driver version: Intel i965 driver for Intel(R) Haswell Desktop - 2.3.0 vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Simple : VAEntrypointEncSlice VAProfileMPEG2Main : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointEncSlice VAProfileH264ConstrainedBaseline: VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice VAProfileH264Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointEncSlice VAProfileH264High : VAEntrypointVLD VAProfileH264High : VAEntrypointEncSlice VAProfileH264MultiviewHigh : VAEntrypointVLD VAProfileH264MultiviewHigh : VAEntrypointEncSlice VAProfileH264StereoHigh : VAEntrypointVLD VAProfileH264StereoHigh : VAEntrypointEncSlice VAProfileVC1Simple : VAEntrypointVLD VAProfileVC1Main : VAEntrypointVLD VAProfileVC1Advanced : VAEntrypointVLD VAProfileNone : VAEntrypointVideoProc VAProfileJPEGBaseline : VAEntrypointVLD $ uname -rvm; rtirq status 5.2.0-rt1-0-cornflower #1 SMP PREEMPT RT Thu Jul 18 09:49:07 CEST 2019 x86_64 PID CLS RTPRIO NI PRI %CPU STAT COMMAND 206 FF 90 - 130 0.0 S irq/28-xhci_hcd 207 FF 90 - 130 0.0 S irq/16-ehci_hcd 211 FF 89 - 129 0.0 S irq/23-ehci_hcd 336 FF 85 - 125 0.0 S irq/16-snd_hdsp 363 FF 80 - 120 0.0 S irq/16-snd_ice1 126 FF 50 - 90 0.0 S irq/9-acpi 138 FF 50 - 90 0.0 S irq/8-rtc0 205 FF 50 - 90 0.0 S irq/1-i8042 213 FF 50 - 90 0.0 S irq/29-ahci[000 324 FF 50 - 90 0.0 S irq/30-mei_me 325 FF 50 - 90 0.0 S irq/5-parport0 327 FF 50 - 90 0.0 S irq/18-i801_smb 338 FF 50 - 90 0.0 S irq/32-i915 387 FF 50 - 90 0.0 S irq/33-snd_hda_ 559 FF 50 - 90 0.0 S irq/31-enp3s0 9 TS - 0 19 0.4 S ksoftirqd/0 23 TS - 0 19 0.4 S ksoftirqd/1 $ pacman -Q intel-hybrid-codec-driver libva libva-utils intel-hybrid-codec-driver 2.0.0.r169.edead0c-2 libva 2.5.0-1 libva-utils 2.5.0-1 $ pacman -Q firefox google-chrome firefox 68.0.1-2 google-chrome 75.0.3770.142-1 $ pacman -Q x264 x264 2:157.r72db4377-1 Regards, Ralf -- pacman -Q linux{,-rt{-cornflower,-pussytoes,,-securityink}}|cut -d\ -f2 5.2.1.arch1-1 5.2_rt1-0 5.0.21_rt16-1 5.0.19_rt11-1 4.19.50_rt22-0