AV1
AOMedia Video 1
A royalty-free video codec offering 30-50% better compression than H.265, developed by the Alliance for Open Media.
Technical Detail
Video av1 relies on temporal and spatial redundancy. Intra-frame compression (I-frames) encodes complete images, while inter-frame compression (P-frames, B-frames) stores only the differences between frames. H.264/AVC remains the most compatible codec. H.265/HEVC achieves ~40% better compression but has patent licensing costs. VP9 (royalty-free, Google) and AV1 (royalty-free, Alliance for Open Media) offer similar or better compression. AV1 encoding is ~10x slower than H.264 but decoding is efficient on modern hardware.
Example
``` Video codec comparison (1080p, 1 minute): H.264 (AVC): ~15 MB @ 2 Mbps — universal support H.265 (HEVC): ~10 MB @ 1.5 Mbps — 40% smaller, patent costs VP9: ~10 MB @ 1.5 Mbps — royalty-free (Google) AV1: ~8 MB @ 1 Mbps — royalty-free, best quality Encoding speed: H.264 > VP9 > H.265 >> AV1 (10x slower) ```
Related Tools
R
Resolution Reference
B
Bitrate Calculator
F
Frame Rate Converter
T
Timecode Calculator
A
Aspect Ratio Calculator
F
File Size Estimator
S
Speed & Slow-Mo Calculator
S
Storage Planner
S
Subtitle Time Converter
B
Bandwidth Calculator
C
Color Space Reference
C
Codec Reference
P
Platform Specs Guide
C
Chroma Subsampling Guide
S
Screen Recording Guide
Related Terms
ABR
B-Frame
Bitrate (Video)
CBR
CFR
Chroma Key
Color Grading
Container Format
CRF
DASH
Deinterlacing
Dolby Vision
Frame Blending
Frame Rate
GOP
H.264
H.265
HDR10
HLG
HLS
I-Frame
Interlacing
Keyframe
Letterboxing
LUT
Motion Estimation
Muxing
Optical Flow
P-Frame
Pillarboxing
Proxy Editing
Rec. 2020
Rec. 709
Stabilization
Subtitle
Timecode
Transcoding
Trimming
Two-Pass Encoding
VBR
VFR
Video Codec