Mendevi 1.2.7¶

Measures of Encoding and Decoding of Videos.¶

This module performs energy and metrics measurements on video, for encoding and decoding. It also provides a detailed dataset.

It manages the following parameters:

It supports the libx264, libx265, libvpx-vp9, libaom-av1, libsvtav1, librav1e and vvc cpu encoders.
It supports the h264_nvenc, hevc_nvenc, av1_nvenc and *_vaapi gpu encoders.
Distortions are measured using the lpips, psnr, ssim and vmaf metrics.
Complexity are measured using the rms_sobel and rms_time_diff metrics.
Encoding efforts are fast, medium and slow.
It takes care about the colorspaces (range, transfer and primaries).
Iterate over different effort, encoder, mode, quality, threads, fps, resolution and pix_fmt.
Energy measurements are catched with RAPL and an external wattmeter on grid'5000.
Get the cpu, gpu, ram and temperature activity.
Get a full environment context, including harware and software version.
It support the mode (constant bitrate) cbr and (constant quality) vbr.

This is the pipeline used for measurements:

Example of rate distortion curve:

mendevi plot mendevi.db -x bitrate -y psnr -y ssim -wx profile -c encoder

Example of energy per encoder:

mendevi plot mendevi.db -x quality -y energy -wx profile -wy mode -c encoder -m effort

The GREEM video encoding measurement tool.
The MVCD database also includes video encoding and decoding energy measurements.
The COCONUT database also includes video decoding measurements.
The SEED and VEED dataset offers a comprehensive LCA and GPU measurements.
The CTC videos are used for the tests.

The documentation was generated on 2026-01-06 13H40.