With the rapid proliferation of the Internet of Things, video analytics has become a cornerstone application in wireless multimedia sensor networks. To support such applications under bandwidth constraints, learning-based adaptive quantization for video compression have demonstrated strong potential in reducing bitrate while maintaining analytical accuracy. However, existing frameworks often fail to fully exploit the fine-grained quality control enabled by modern blockbased video codecs, leaving significant compression efficiency untapped. In this paper, we present How2Compress, a simple yet effective framework designed to enhance video compression efficiency through precise, fine-grained quality control at the macroblock level. How2Compress is a plug-and-play module and can be seamlessly integrated into any existing edge video analytics pipelines. We implement How2Compress on the H.264 codec and evaluate its performance across diverse real-world scenarios. Experimental results show that How2Compress achieves up to 50.4% bitrate savings and outperforms baselines by up to 3.01× without compromising accuracy, demonstrating its practical effectiveness and efficiency. Code is available at https://github.com/wyhallenwu/how2compress and a reproducible docker image at https://hub.docker.com/r/wuyuheng/how2compress.
@article{arxiv.2510.18409,
title = {How2Compress: Scalable and Efficient Edge Video Analytics via Adaptive Granular Video Compression},
author = {Yuheng Wu and Thanh-Tung Nguyen and Lucas Liebe and Quang Tau and Pablo Espinosa Campos and Jinghan Cheng and Dongman Lee},
journal= {arXiv preprint arXiv:2510.18409},
year = {2025}
}