On Sat, 17 Jan 2026 09:51:08 +0000 Peter van den Houten via ffmpeg-user <[email protected]> wrote: > On 16/01/2026 18:01, David Niklas via ffmpeg-user wrote: > > Hello, > > I'm trying to encode a 4K video with ffmpeg. The QSV encoder will not > > initialize. > > > > I've tried searching online, but all I can find is that my syntax > > might be incorrect. I have tried to read the ffmpeg wiki, but it > > doesn't explain what to use nor how to use it. The provided examples > > in the wiki fail with the exact same errors as below. > > > > Any ideas? > > Thanks! > > > > > > % ffprobe tmp.mp4 > > <snip reason=Duplicate version info."> > > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tmp.mp4': > > Metadata: > > major_brand : isom > > minor_version : 512 > > compatible_brands: isomiso2avc1mp41 > > encoder : Lavf62.3.100 > > Duration: 00:03:15.79, start: 0.000000, bitrate: 36078 kb/s > > Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), > > yuvj420p(pc, bt709, progressive), 3840x2160, 35970 kb/s, 30 fps, 30 > > tbr, 90k tbn (default) Metadata: handler_name : VideoHandle > > vendor_id : [0][0][0][0] > > Side data: > > displaymatrix: rotation of -180.00 degrees > > > > > > % ffmpeg -init_hw_device qsv=hw -filter_hw_device hw -i tmp.mp4 -c:v > > vp9_qsv -b:v 2M -preset veryslow vp9_qsv.webm ffmpeg version 8.0 > > Copyright (c) 2000-2025 the FFmpeg developers built with gcc 12 > > (Debian 12.2.0-14+deb12u1) configuration: --prefix=/usr/local > > --enable-gpl --enable-version3 --enable-nonfree --enable-gray > > --enable-doc --enable-alsa --enable-chromaprint --enable-frei0r > > --enable-gmp --enable-ladspa --enable-lcms2 --enable-libaom > > --enable-libaribb24 --enable-libass --enable-libbluray > > --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 > > --enable-libdav1d --enable-libdavs2 --enable-libdvdnav > > --enable-libdvdread --enable-libflite --enable-libfontconfig > > --enable-libfreetype --enable-libharfbuzz --enable-libglslang > > --enable-libgme --enable-libgsm --enable-libilbc --enable-libjack > > --enable-libjxl --enable-libkvazaar --enable-libmodplug > > --enable-libmp3lame --enable-liboapv --enable-libopencore-amrnb > > --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg > > --enable-libopenmpt --enable-libopus --enable-libqrencode > > --enable-librabbitmq --enable-librav1e --enable-librist > > --enable-librsvg --enable-librubberband --enable-librtmp > > --enable-libshine --enable-libsnappy --enab > le- > > libsoxr --enable-libspeex --enable-libsrt --enable-libssh > > --enable-libsvtav1 --enable-libtesseract --enable-libtheora > > --enable-libtwolame --enable-libuavs3d --enable-libv4l2 > > --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis > > --enable-libvpx --enable-libvvenc --enable-libwebp --enable-libx264 > > --enable-libx265 --enable-libxeve --enable-libxevd --enable-libxavs > > --enable-libxavs2 --enable-libxvid --enable-libxml2 --enable-libzimg > > --enable-libzmq --enable-libzvbi --enable-lv2 --enable-lzma > > --enable-libmysofa --enable-openal --enable-opencl --enable-opengl > > --enable-openssl --enable-pocketsphinx --enable-sndio --enable-sdl2 > > --enable-vapoursynth --enable-libvpl --enable-v4l2-m2m > > --disable-stripping --cpu=native --target-os=linux --enable-shared > > libavutil 60. 8.100 / 60. 8.100 libavcodec 62. 11.100 / > > 62. 11.100 libavformat 62. 3.100 / 62. 3.100 libavdevice 62. > > 1.100 / 62. 1.100 libavfilter 11. 4.100 / 11. 4.100 libswscale > > 9. 1.100 / 9. 1.100 libswresample 6. 1.100 / 6. 1.100 > > [QSV @ 0x55c48ea44440] No supported child device type is enabled > > Device creation failed: -38. Failed to set value 'qsv=hw' for option > > 'init_hw_device': Function not implemented Error parsing global > > options: Function not implemented > Hey David > > What version is your Intel CPU?
I gave you the model number in the title (265K), so I'm uncertain what you're interested in, specifically. Here's the first listing of /proc/cpuinfo, if it helps: % less /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 198 model name : Intel(R) Core(TM) Ultra 7 265K stepping : 2 microcode : 0x119 cpu MHz : 800.095 cache size : 30720 KB physical id : 0 siblings : 20 core id : 0 cpu cores : 20 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 35 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdt_a rdseed adx smap clflushopt clwb intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves split_lock_detect user_shstk avx_vnni lam wbnoinvd dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req hfi vnmi umip pku ospke waitpkg gfni vaes vpclmulqdq rdpid bus_lock_detect movdiri movdir64b fsrm md_clear serialize arch_lbr ibt flush_l1d arch_capabilities vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vpid unrestricted_guest vapic_reg vid ple shadow_vmcs pml ept_violation_ve ept_mode_based_exec tsc_scaling usr_wait_pause notify_vm_exiting ipi_virt bugs : spectre_v1 spectre_v2 spec_store_bypass swapgs bhi bogomips : 7759.00 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: > I've not been able to solve this problem using the qsv API, only using > -hwaccel vaapi or -hwaccel cuda (if you have a Nvidia GPU). There > appears to be some confusion as to which Intel GPU version supports the > FFmpeg qsv API and how this is implemented. Yeah, I kinda noticed that. > Also, the h.266 encoder, enabled via your libvvenc, will not encode > with Quick Sync and libvvdec will only work with the very latest Intel > CPU/GPUs. > > Cheers Peter Well, the 265K is the very latest -- unless you're referring to the paper launched laptop CPUs from intel at CES. Thanks, David _______________________________________________ ffmpeg-user mailing list -- [email protected] To unsubscribe send an email to [email protected]
