Den 27.04.2025 23:39, skrev Andrew Randrianasulu:

вс, 27 апр. 2025 г., 23:58 Terje J. Hanssen <terjejhanssen@gmail.com>:

Den 26.04.2025 22:37, skrev Andrew Randrianasulu via Cin:

RADV_PERFTEST=video_decode,video_encode time -p ./ffmpeg -init_hw_device vulkan=vulkan -filter_hw_device vulkan -hwaccel vulkan -i ~/K38_sdcard1/Documents/iPhone11_4K-recorder_59.940HDR10.mov -vf libplacebo=w=1920:h=1080:force_original_aspect_ratio=decrease:normalize_sar=true:upscaler=ewa_lanczos:downscaler=ewa_lanczos:colorspace=bt709:color_primaries=bt709:color_trc=bt709:range=tv -c:a copy -c:v libx264 -f mp4 -benchmark /dev/shm/ffmpeg-git-libplacebo-vulkan-2k.mp4

frame= 1148 fps= 10 q=-1.0 Lsize= 30435KiB time=00:00:19.13 bitrate=13029.3kbits/s speed=0.167x

bench: utime=355.600s stime=25.878s rtime=114.342s

so nearly 10 fps with scaled to FHD input! (otherwise 32bit x264 OOMs)

==================

I admit I'm not sure what's going on in every detail above and below. But I've tried to adapt something similar or equivalent (?) using my Google Pixel 7 Pro smartphone to record a small HDR10 video clip, and then using ffmpeg on my Intel Alder Lake cpu/DG2 gpu workstation. Comments are welcome for correction and learning?

Well, 125 fps sounds fast ;)

This line tries to convert HDR video to SDR version, same size (for your case) but it now 10bit h264 instead of 10bit h265.

You probably can add format=yuv420p before all other -vf liblacebo options so resulting file will be more compatible 8bit h264.

You can try to watch both vids side by side, I think mpv uses same algorithm as libplacebo, so on SDR screen results must look close to each other?

I tried also to convert adding -vf format=yuv420p, but both the 10bit and 8bit output files are distorted when playback with vlc, mpv or ffplay.
In comparison testing with my highest ProRes hq 10bit video file as input (not HDR), the output mp4 file looks fine with the same ffmpeg code line.

Was there a download site with small HDR10 test clips available, so we can test and compare using the same input?

time -p ffmpeg -hide_banner -init_hw_device vulkan=vulkan -filter_hw_device vulkan -hwaccel vulkan -i PXL_20250427_195356771.TS.mp4 -vf format=yuv420p,libplacebo=w=1920:h=1080:force_original_aspect_ratio=decrease:normalize_sar=true:upscaler=ewa_lanczos:downscaler=ewa_lanczos:colorspace=bt709:color_primaries=bt709:color_trc=bt709:range=tv -c:a copy -c:v libx264 -f mp4 -benchmark ffmpeg-libplacebo-PXL_20250427_195356771.TS.mp4
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x56364496c680] All samples in data stream index:id [3:4] have zero duration, stream set to be discarded by default. Override using AVStream->discard or -discard for ffmpeg command.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'PXL_20250427_195356771.TS.mp4':
Metadata:
    major_brand     : isom
    minor_version   : 131072
    compatible_brands: isomiso2mp41
    creation_time   : 2025-04-27T19:54:05.000000Z
    SpecialTypeID   : com.google.android.apps.camera.gallery.specialtype.SpecialType-AMETHYST
    com.android.capture.fps: 30.000000
    com.android.model: Pixel 7 Pro
    com.android.manufacturer: Google
Duration: 00:00:06.97, start: 0.000000, bitrate: 20255 kb/s
Stream #0:0[0x1](eng): Data: none (mett / 0x7474656D), 47 kb/s (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : MetaHandle
Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : SoundHandle
        vendor_id       : [0][0][0][0]
Stream #0:2[0x3](eng): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv, bt2020nc/bt2020/arib-std-b67), 1920x1080, 20010 kb/s, SAR 1:1 DAR 16:9, 29.99 fps, 30 tbr, 90k tbn (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : VideoHandle
        vendor_id       : [0][0][0][0]
Stream #0:3[0x4](eng): Data: none (mett / 0x7474656D) (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : MetaHandle
File 'ffmpeg-libplacebo-PXL_20250427_195356771.TS.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
Stream #0:2 -> #0:0 (hevc (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
MESA-INTEL: warning: ../src/intel/vulkan/anv_formats.c:834: FINISHME: support more multi-planar formats with DRM modifiers
[libx264 @ 0x563644986d40] using SAR=1/1
[libx264 @ 0x563644986d40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x563644986d40] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x563644986d40] 264 - core 164 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=30 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'ffmpeg-libplacebo-PXL_20250427_195356771.TS.mp4':
Metadata:
    major_brand     : isom
    minor_version   : 131072
    compatible_brands: isomiso2mp41
    com.android.manufacturer: Google
    SpecialTypeID   : com.google.android.apps.camera.gallery.specialtype.SpecialType-AMETHYST
    com.android.capture.fps: 30.000000
    com.android.model: Pixel 7 Pro
    encoder         : Lavf61.7.100
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 30 fps, 15360 tbn (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : VideoHandle
        vendor_id       : [0][0][0][0]
        encoder         : Lavc61.19.101 libx264
      Side data:
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
      Metadata:
        creation_time   : 2025-04-27T19:54:05.000000Z
        handler_name    : SoundHandle
        vendor_id       : [0][0][0][0]
[out#0/mp4 @ 0x56364496f940] video:3480KiB audio:163KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.242542%
frame= 209 fps=116 q=-1.0 Lsize=    3651KiB time=00:00:06.90 bitrate=4335.2kbits/s speed=3.83x
bench: utime=14.435s stime=0.739s rtime=1.804s
bench: maxrss=1455376KiB
[libx264 @ 0x563644986d40] frame I:2     Avg QP:18.68 size:105708
[libx264 @ 0x563644986d40] frame P:66    Avg QP:23.77 size: 32017
[libx264 @ 0x563644986d40] frame B:141   Avg QP:31.40 size: 8783
[libx264 @ 0x563644986d40] consecutive B-frames: 7.2% 6.7% 5.7% 80.4%
[libx264 @ 0x563644986d40] mb I I16..4: 32.3% 25.8% 41.9%
[libx264 @ 0x563644986d40] mb P I16..4: 0.4% 0.5% 1.2% P16..4: 16.7% 8.0% 5.6% 0.0% 0.0%    skip:67.5%
[libx264 @ 0x563644986d40] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 12.9% 4.5% 1.4% direct: 1.8% skip:79.2% L0:46.1% L1:47.2% BI: 6.8%
[libx264 @ 0x563644986d40] 8x8 transform intra:23.8% inter:36.3%
[libx264 @ 0x563644986d40] coded y,uvDC,uvAC intra: 56.1% 64.0% 50.1% inter: 6.8% 6.4% 2.8%
[libx264 @ 0x563644986d40] i16 v,h,dc,p: 53% 44% 2% 1%
[libx264 @ 0x563644986d40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 43% 16% 16% 2% 1% 0% 0% 0% 21%
[libx264 @ 0x563644986d40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 56% 12% 1% 1% 1% 1% 1% 7%
[libx264 @ 0x563644986d40] i8c dc,h,v,p: 42% 45% 13% 1%
[libx264 @ 0x563644986d40] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x563644986d40] ref P L0: 68.8% 8.1% 12.7% 10.4%
[libx264 @ 0x563644986d40] ref B L0: 88.9% 8.3% 2.8%
[libx264 @ 0x563644986d40] ref B L1: 94.5% 5.5%
[libx264 @ 0x563644986d40] kb/s:4091.33
real 4,76
user 14,49
sys 0,77