Chromium 154 drops H.264 and AAC support over licensing restrictions

The exclusion of H.264 and AAC from the Chromium baseline creates a friction point for developers who rely on the open-source engine for testing without Google's proprietary layers. By stripping these decoders, the project reinforces a technical environment where royalty-free codecs like AV1 and VP9 are the only native options for video playback. This move highlights the ongoing licensing divide between the open-source core and commercial browsers like Microsoft Edge or Brave, which must add these decoders independently. Strategists should monitor whether this lack of native support accelerates the adoption of AV1 across the broader streaming ecosystem to ensure cross-browser compatibility.

The Chromium project's exclusion of H.264 and AAC from its open-source baseline reflects a broader industry shift toward royalty-free codecs, particularly AV1. Google has been a primary backer of AV1 through the Alliance for Open Media, and the codec has gained significant traction in streaming deployments. YouTube reported in early 2026 that AV1 now accounts for over 30% of total watch time on its platform, up from roughly 15% in 2024, driven by hardware decoder support in newer devices and software-based decoding improvements. This growing AV1 footprint means that Chromium's native support for AV1 and VP9 positions the open-source browser engine to handle an increasing share of real-world streaming content without proprietary codec dependencies. The licensing economics behind Chromium's codec exclusions are tied to patent pools managed by organizations like Via Licensing and Sisvel, which collect royalties on H.264 and AAC behalf of patent holders. Sisvel POS patent pool announced in March 2026 updated royalty rates for H.264 streaming use, maintaining per-subscriber fees that have remained a cost consideration for streaming platforms and device manufacturers. Meanwhile, the Alliance for Open Media has positioned AV1 as royalty-free, though Sisvel launched an AV1 patent pool in late 2025 claiming essential patents, creating some uncertainty about whether AV1 will remain entirely free of licensing obligations. This tension between royalty-free promises and patent pool claims is a key factor for streaming strategists evaluating long-term codec investments. On the technical side, independent benchmarks continue to show AV2 codec ecosystem delivering meaningful bitrate savings over H.264 and even VP9 at comparable quality levels. Netflix published encoding benchmark data in mid-2026 showing AV1 achieves approximately 30% bitrate reduction compared to VP9 at equivalent VMAF scores, reinforcing the codec's value for bandwidth-constrained delivery. Hardware-accelerated video encoding has also expanded, with MediaTek confirming AV1 hardware decode across its entire 2026 mobile chipset lineup, which reduces the CPU overhead that previously limited AV1 adoption on mobile devices. For developers building on the Chromium baseline, these hardware and software advances mean that testing with AV1 and VP9 increasingly reflects the production reality facing end users across devices.