Multimedia News Archives
Google Posts Initial Code For Lyra Speech Codec

Back in February we covered Google's work on the Lyra voice/audio codec designed for fitting with very low bit-rate audio for speech compression in use-cases like WebRTC and video chatting even on the most limited Internet connections. Thanks to leveraging machine learning, Lyra can function at just 3kbps. The code to Lyra is now public.

6 April 2021 - Lyra Open-Source - 24 Comments
PulseAudio 15 Lands mSBC Codec Support To Enable Bluetooth Wideband Speech

While PipeWire is being increasingly looked at by desktop Linux distributions as the future of audio/video stream handling on the Linux desktop, aside from Fedora most Linux distributions are so far being cautious in replacing PulseAudio. In any event, PulseAudio is showing no signs of letting up and continues seeing new feature development.

6 April 2021 - PulseAudio msBC - 49 Comments
PipeWire 0.3.22 Released With Many Improvements

With Fedora 34 aiming to use PipeWire by default for audio use-cases currently handled by PulseAudio and JACK, the Red Hat developers working on PipeWire remain very busy in addressing bugs and wiring up new functionality for this audio and video framework/server.

21 February 2021 - PipeWire 0.3.22 - 45 Comments
POWER9 + ARM64 Performance For Dav1d 0.8 AV1 Decoding

With last week's release of dav1d 0.8 for CPU-based AV1 video decoding we provided a number of x86_64 benchmarks while questions were raised around the ARM64 and POWER9 performance. Here are such benchmarks for those wondering about the AV1 video decoding speed on those architectures.

9 January 2021 - dav1d 0.8 - 13 Comments
dav1d 0.8 Released With More Optimizations - More AMD Performance

Dav1d 0.8 was released this weekend (and subsequently 0.8.1 too) as the latest major release for this CPU-based AV1 decoder hosted by the VideoLAN project. Dav1d continues to be about offering the best AV1 decode speed and with the v0.8 series are even faster results -- so here are some of our initial data points as well from some weekend benchmarking.

3 January 2021 - dav1d 0.8 - 15 Comments
Allwinner "Cedrus" Media Driver Finally Sees Support For VP8 Decode

Linux's Cedrus media driver that provides video decoding on various Allwinner SoCs is finally seeing support added for VP8. But given this addition for Linux 5.11 won't be out as stable until well into 2021 and most of the world has moved onto VP9, it may not be too beneficial at this stage.

14 December 2020 - VP8 Decoding - 2 Comments
Vulkan Improvements & Fixes Land In FFmpeg

Over the past year we have seen various Vulkan features landing in the FFmpeg repository and this past week brought more fixes and improvements around using the Vulkan API for accelerated filters and more.

29 November 2020 - FFmpeg Vulkan - 6 Comments
SVT-AV1, Dav1d Speeding Along AV1 Into 2021

While consumer GPUs are reaching market with AV1 decode acceleration, there still is the matter of the various media APIs and multimedia software making use of it. In cases where that is missing or the user doesn't yet have a supported Tiger Lake / Ampere / RDNA2 GPU, the dav1d decoder remains the fastest open-source CPU-based AV1 decoder. Similarly, SVT-AV1 remains the fastest CPU-based AV1 encoder available.

29 November 2020 - New Releases Pending - Add A Comment
PulseAudio 14.0 Released With Better USB Gaming Headset Support

While in 2021 we might begin to see PipeWire replacing PulseAudio by default at least on bleeding-edge distributions like Fedora, for now PulseAudio still is the dominant sound server used by desktop Linux distributions. Rolling out today is PulseAudio 14.0.

23 November 2020 - PulseAudio 14 - 20 Comments
Linux's Stateless H.264 Decode Interface Ready To Be Deemed Stable

The Linux kernel's stateless video decoder interface is used for video decoding where no state needs to be kept between processed video frames and allows for independently decoding each video frame. The H.264 stateless decode interface for the Linux kernel has been in the works for a few years and is now deemed ready and stable for dealing with modern stateless codecs.

17 November 2020 - Stateless H.264 - 17 Comments

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