▲ Theora project icon

After inquiries, it is learned that Theora is a free and open lossy video compression format developed by the Xiph.Org Foundation. The video codec was generally released to the public on November 3, 2008, primarily for online audio and video purposes.

According to a recent Mozilla survey, only about 0.09% of media load in Firefox is Theora content, and most web services have long since moved away from Theora to better alternatives such as VP9 and AV1 codecs. So, very few legacy services or other video sources require Theora.

Mozilla’s plan is to test disabling Theora in Firefox nightly builds, add a little telemetry to track demand if any Theora load attempts occur, wait a few Firefox release cycles before removing it during the testing phase, and then proceed in a similar way to Chrome’s Ways to remove Theora support from Firefox.

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Google Meet, Google Hangouts, Zoom, Facebook Messenger and Discord, most of the video clients/applications on the Internet use Web Real-Time Communication (WebRTC).

However, in the case of poor network connection signal, WebRTC may have the problem of packet loss, Mozilla in Firefox Nightly version, the default enabled ULPFEC and RED function, can reduce the packet loss situation, so as to improve the WebRTC video experience, the user in other versions can enable media. navigator.video.red_ulpfec_enabled experimental flag in other versions.

ULPFEC, known as Uneven Level Protection Forward Error Correction, is a technique used to recover lost or corrupted data from video streams and is one of the payload types supported by the MS-SDPEXT protocol and the OvenMediaEngine server.

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Note: Private Browsing is a useful feature of Firefox that can help you hide your network activities on your computer from other Firefox users, but it does not make you invisible online.

Firefox doesn’t save passwords, cookies, and history when you use a private window. If you download a file from a website, the file won’t appear in Firefox’s Download Manager, but it will still remain on your computer. Additionally, if you bookmark a website in a privacy window, it will remain in your bookmarks list.

Firefox users previously had to reset their session by closing the current window and then reopening it, but users can do the same thing after clicking this button.

There is also an option to uncheck “Always ask me” and activating the button will immediately reset the unchecked options, speeding up the reset.

It’s unclear when this feature will land on the stable version of Firefox. The current Nightly version number is 120, and the 120 stable version is planned to be released in late November 2023.

The preference browser.privatebrowsing.resetPBM.enabled defines whether this button appears in the Firefox toolbar, setting it to TRUE will display the icon, and setting it to FALSE will remove it.

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Image source Pixabay

According to media reports, a dangerous zero-day vulnerability was discovered in both Chrome and Firefox browsers, with the tracking number CVE-2023-5217, which will cause a buffer overflow in the VP8 codec. There is already evidence that hackers are exploiting it. This vulnerability launches an attack.

The Google security team stated that the vulnerability exists in the WebM file format, which means that browsers including Chrome, Firefox, software such as Skype, VLC, and supporting software from AMD, Nvidia, and Logitech may have vulnerabilities.

Google has released Chrome 117.0.5938.132 update, and Mozilla has released Firefox 118.0.1 update, which fixes the above vulnerability.

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It is reported that foreign media quoted Mozilla’s official Firefox Weekly data to confirm its view. From January 2019 to yesterday (August 2023), Firefox users fell by 30.3%.

▲ Picture source stack-diary

Foreign media said that generally speaking, MAU (Retention Rate) shows a standard fluctuation state throughout the year, and there will be a certain decline in summer and holidays. This effect can be observed very clearly when comparing China and the United States. Both countries have noticeable declines from the beginning of late spring to early summer and the end of September, with the second-holiday decline in the US occurring in December/January (corresponding to the Christmas/New Year holidays) and the holiday decline in China In the middle and late February (corresponding to the Spring Festival).

▲ Picture source stack-diary

However, foreign media said that the decline in Firefox users is more natural. In the past few years, there has not been much news surrounding Firefox. Among them, “the biggest story may be the layoffs announced by the company in 2020.”

Foreign media also attached the current browser market share information (as of February 2023):

▲ Picture source stack-diary

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The Mozilla team said that the Firefox browser has been continuously adjusted and optimized. In the SunSpider benchmark test, it has been ahead of the Chrome browser for two consecutive months.

Note: SunSpider is a synthetic benchmark test that mainly tests JavaScript performance. Its performance metrics are measured in execution time (in ms), where less time means faster.

However, in JetStream 2 (from Apple), another measure of JavaScript performance, although the Firefox browser has also improved, the gap with the Chrome browser has basically remained unchanged.

In addition, in the Speedometer running score that measures JavaScript throughput, the performance of the Firefox browser shows a downward trend, but the results slightly exceed the Chrome browser.

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Mozilla said it will announce the exact launch date in September this year, and said it will allow the Android version of the Firefox browser to use desktop extensions before the end of this year.

Mozilla said that in the past few years, the development of Firefox for Android has focused on core functions and only supports a small number of extensions.

It is learned from the press release that Mozilla believes that the infrastructure of the Android version of Firefox has been basically stable after years of development, and the next step is to open the extension system to meet the individual needs of mobile users.

Giorgio Natili, director of browser engineering at Firefox, said: “The mobile browser space can unlock a lot of creative potential. Mozilla wants to provide the best support for developers so that they can build web extensions suitable for the mobile era.”

Firefox will be the only mainstream Android browser to support an open extension ecosystem, Mozilla said.

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The Mozilla Foundation and NVIDIA have not officially announced the integration of VSR technology, but internal sources with knowledge of the situation have revealed the progress, saying that it is still in the initial stage, and it will take some time for users to really get started.

To enable VSR in Firefox, go to your application settings and type about:config in the search bar. After that, in the Settings tab, you’ll need to find “gfx.webrender.super-resolution.nvidia”. resolution.nvidia” parameter and set its value to “True”.

Note: NVIDIA announced this new RTX Video Super Resolution (RTX Video Super Resolution) technology in the CES 2023 GeForce Beyond live broadcast, which can be called the DLSS in the field of video playback.

The RTX Video Super Resolution feature is described as using AI to improve the quality of any video viewed in a browser by removing blocky compression artifacts and increasing video resolution. The technology improves the sharpness and clarity of video, allowing online content to be viewed in its original resolution on high-resolution displays.

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Firefox 115 introduces the Cookie Banner Reduction and Quick Actions buttons that were originally planned to go live in version 114.

After users enable Cookie Banner Reduction in Firefox 115, the browser will automatically reject cookie requests on cookie banners when visiting supported websites.

The second feature is the Quick Actions button on the address bar, which can perform actions such as clearing cookies or history, taking screenshots, opening settings, viewing page source code, switching to tabs, and more. It can be adjusted in the “Privacy and Security” panel under “Settings” and is enabled by default.

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The program is described as supporting early-stage startups whose products or technologies promote one or more of the values in the Mozilla manifesto, such as privacy, inclusion, transparency, accessibility and human dignity. Its long-term strategy is “to support an ecosystem of products and technologies that respect users and make the Internet a healthier place.

Mozilla has committed $35 million (currently about RMB 243 million) to support the fund and is currently making a small investment and talking to partners interested in co-investing in the fund.

Mozilla is a non-profit organization that develops Firefox, the Firefox browser, with the goal of making the web a sustainable service to the public, without building products and policies for profit, according to the official website.

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