AV1 · CIQ

Constant image quality, shared cq grid, per-resolution bitrate window, NVENC

57 streams · 57 verified · 279 MB · manifest.csv · manifest.json

Base parameters of the group

Codec / encoderAV1 · ffmpeg 6.1 av1_nvenc (RTX 5060 Ti): -preset p7 -tune hq -multipass fullres -rc-lookahead 32 -spatial-aq 1 -temporal-aq 1 -bf 3 -b_ref_mode middle -g 30 -keyint_min 30 -forced-idr 1 -no-scenecut 1
Rate controlconstant quality: -rc vbr -cq N -b:v 0 -maxrate 800M -bufsize 800M (bitrate floats)
Pointscq 48, 44, 40, 36, 32, 28, 24, 20, 16, 12 (low → high quality). Every sequence keeps only the points whose actual bitrate falls inside a window that depends on the resolution: max 25 Mbit/s (720p), 50 Mbit/s (1080p), 150 Mbit/s (4K), 400 Mbit/s (8K), min = max / 12. The other points are not published; the table marks them with “–”.
Level / bufferAV1 Annex A: the lowest level (main tier; high tier only when main does not fit) that covers the resolution, sample rate and the actual bitrate. seq_level_idx / seq_tier in the sequence header are patched to that level. Buffer in the name = the level's BufferSize (MaxBitrate × 1 s).
Structure60 frames = 2 GOP × 30 (keyframes at frames 0 and 30, no scene-cut keyframes), random access with a B-pyramid, profile 0 (Main), bit depth as in the source, IVF container.
Sequencesall 9
VerificationReference decode with aomdec (YUV md5 in the .json), keyframes checked with ffprobe, PSNR/SSIM against the source.

Bitrates

sequencecq 48cq 44cq 40cq 36cq 32cq 28cq 24cq 20cq 16cq 12
NocturneDancewindow 12.5–150 Mbit/s15.4738.3 dB21.9739.8 dB31.3841.5 dB45.2843.1 dB65.9844.8 dB96.1246.4 dB139.9048.1 dB–too high · 208.2–too high–too high
NocturneRoomHDRwindow 12.5–150 Mbit/s–too low · 6.212.5242.5 dB23.3243.4 dB39.8544.5 dB67.0945.7 dB110.5647.2 dB–too high · 173.7–too high–too high–too high
ShakyBaseballwindow 12.5–150 Mbit/s–too low · 8.2–too low · 12.118.9945.1 dB31.5645.7 dB53.3446.4 dB85.7847.1 dB134.2048.0 dB–too high · 204.6–too high–too high
Witcher3window 4.2–50 Mbit/s–too low · 3.75.8435.2 dB8.9836.1 dB13.5037.1 dB20.1738.2 dB29.9839.4 dB43.8840.8 dB–too high · 64.3–too high–too high
MissionControl1window 4.2–50 Mbit/s4.2535.0 dB5.5837.2 dB7.1039.2 dB9.3041.4 dB12.0043.7 dB15.5446.2 dB20.0848.6 dB26.2651.2 dB33.2553.6 dB43.1355.8 dB
RitualDancewindow 4.2–50 Mbit/s–too low · 3.64.9640.5 dB6.7542.2 dB9.3544.0 dB12.9245.6 dB18.1947.1 dB26.6648.4 dB41.2649.5 dB–too high · 59.4–too high
MeridianShoreHDRwindow 4.2–50 Mbit/s–too low · 2.2–too low · 3.45.2640.0 dB8.0941.3 dB12.0342.4 dB18.6843.7 dB30.2844.8 dB47.1445.8 dB–too high · 70.4–too high
DrivingPOVwindow 2.1–25 Mbit/s–too low · 1.82.5834.5 dB3.7336.0 dB5.3837.5 dB7.8039.0 dB11.3440.4 dB16.8341.8 dB–too high · 25.4–too high–too high
TiergartenParkwaywindow 33.3–400 Mbit/s45.5035.2 dB67.9236.5 dB105.1237.6 dB170.0338.6 dB262.1139.5 dB–too high · 407.1–too high–too high–too high–too high

Actual bitrate in Mbit/s (click to jump to the stream), below: PSNR-Y in dB. “–” = point outside the sequence's bitrate window, not published (the measured bitrate is shown when the point was encoded; higher-quality points after the first “too high” are not encoded).

Streams

NocturneDance 7 streams
NocturneRoomHDR 5 streams
ShakyBaseball 5 streams
Witcher3 6 streams
MissionControl1 10 streams
RitualDance 7 streams
MeridianShoreHDR 6 streams
DrivingPOV 6 streams
TiergartenParkway 5 streams