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Tag Archives: video
Xiph 講數位訊號…
Xiph 是個網路多媒體相關的 open source 組織,前陣子放了教學影片,介紹多媒體的理論:「Xiph.org: Video」,目前每一集都大約半小時,可以下載下來或是直接在網站上看。 第一課「Episode 1: A Digital Media Primer for Geeks」從數位訊號開始講,包括影像與聲音。第二課「Episode 2: Digital Show & Tell」則是介紹聲音的部份 (包括數位與類比)。 有興趣可以去看看 :p
HiNet 讓 YouTube 變快的方法:擋掉 210.71.222.0/24
在「How to stop TWC ISPs sucking at Youtube」這篇看到作者 (在美國) 抱怨時代華納 (Time Warner Cable,TWC) 連 YouTube 看影片的速度很慢,然後發現擋掉某個網段就快很多了… 看了 Hacker News 上的討論以及以前得知的架構,這些 IP 有可能是: YouTube 自己的 CDN 伺服器,以 appliance 的形式放到 TWC 內。 TWC 買 YouTube cache solution 丟自己機房。 如果要猜的話,我會猜前者… 然後同樣問題也在 HiNet 發生,實際測試後就找到 … Continue reading
YouTube 將 99% PV 影片加上 WebM 支援
YouTube 發了一篇公告,將站上約 30% 的影片另外壓一份 WebM 格式,而這 30% 佔全站 99% pageview:「Mmm mmm good – YouTube videos now served in WebM」。 目前在 Firefox 4+、Opera 10.6+、Google Chrome 支援 WebM 格式,手機平台則是 Android 2.3 (Gingerbread) 支援。 希望有一天可以完全取代 H.264…
在 Ubuntu 10.10 上看 RV10 影片的方式…
最大的問題在於 codec,所以講重點就好:裝 libavcodec-extra-52。不同 Ubuntu 版本後面的號碼可能不一樣,用 apt-cache search libavcodec 應該可以看到。 預設用 rv40 解,打開兩秒就停住,換上去以後就正常了…
Posted in Anime, Computer, Movie, Murmuring, Recreation, Software, Television
Tagged real, rv10, video
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Google 推出 VP8 的硬體設計
Google 推出了 VP8 編碼與解碼的硬體設計,代號「Anthill」:「Introducing “Anthill,” the First VP8 Hardware Encoder IP Release」。 透過 Anthill,對於 GPU 的 loading 及電源消耗會大幅降低:(這是在 ARM 平台上的估算) 不過比較奇怪的是只有寫 H1 encoder RTL 不收錢?重點在 decoder 吧? Google does not require payment of any license fee or royalty in connection … Continue reading
Adobe Flash Player 10.2
有很多地方都有報導,引官方 Adobe Flash Player Team Blog 的新聞稿好了:「Flash Player 10.2 is Here: Available Now for Windows, Mac, and Linux」。 新版的 Flash Player 主打「Stage Video」(參考「Getting started with stage video」這篇文章),將 video rendering 的部份丟給顯卡加速。(雖然還是有很多限制) 不透過 DLM 安裝的方式可以參考「直接安裝 Adobe Flash Player 而不安裝 DLM」這篇。另外要透過 AD 派送的可以到「Download … Continue reading
Netflix 公佈北美 ISP 對 Netflix 的速度…
在 Netflix 官方的網誌上公佈:「Netflix Performance on Top ISP Networks」。 目前 Netflix 有 Akamai 與 Level3 兩家 CDN 提供服務 (不確定還有沒有其他的),在最後一段還說要每個月更新這些資料,是打算反過來對 ISP 施壓嗎?: We’ll update these charts monthly, and we welcome questions, comments and suggestions to help improve our understanding of Netflix performance … Continue reading
H.264 的近況
先記錄下來,還要再想想: MPEG LA Announces Permanent Royalty Moratorium For H264 MPEG LA counters Google WebM with permanent royalty moratorium MPEG-LA Makes Free Internet Video Royalty Free Perpetually MPEG LA Says H.264 Will Be Royalty Free For Life, For Content That Is … Continue reading
Posted in Computer, Murmuring, Network, Recreation, Software, Television, WWW
Tagged h264, mpeg, nicovideo, patent, smilevideo, video
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