| 词条 | VisualOn |
| 释义 |
| logo = Visualon - logo.png | logo_size = 220px | name = VisualOn | company_type = Private | founded = 2003 | headquarters = Santa Clara, CA, United States | key_people = Andy Lin (CEO) Yang Cai (Founder) Bill Lin (Founder) | website = {{URL|www.visualon.com}} | launch_date = 2003 | current_status = Active | services = MediaPlayer Streaming Media }} VisualOn is a Silicon Valley-based multimedia software company that provides high-definition audio and video entertainment to smartphones, tablets, laptops, connected TVs and other mobile and convergent devices. VisualOn's patented technology is modular and platform-agnostic. VisualOn supports streaming, VOD, mobile TV and other multimedia applications. VisualOn customers include content providers, technology companies and hardware manufacturers. The company partners with a range of technology companies to ensure streaming media workflow interoperability. VisualOn HistoryVisualOn was founded in 2003 by Dr. Yang Cai and Dr. Bill Lin. The company is headquartered in San Jose, CA, with offices in Shanghai, Taipei, Tokyo, South Korea, Germany and Finland. VisualOn Memberships and Affiliations
VisualOn Products
VisualOn AAC EncoderVisualOn provided a simple Advanced Audio Coding (AAC) encoder in early versions of Android.[5] The encoder was derived from the 3GPP reference encoder[6] and supported only the AAC-LC profile in mono or stereo. Google added a more advanced AAC codec library to Android as of the 4.1 Jelly Bean release.[7] The VisualOn encoder remains in the Android source code, but development appears to have ended. VisualOn no longer markets any commercial encoder products. VisualOn software codecs listed on its website are software based decoders and not encoders. A cross-platform source distribution is maintained by Martin Storsjö as vo-aacenc. The latest vo-aacenc release is 0.1.3 (2013-07-27).[8] The code compiles into a shared library, libvo-aacenc. The media frameworks FFmpeg and Libav support audio encoding through libvoaac-enc.[9][10] The VisualOn AAC encoder has been shown to be very low quality in ABX testing.[11] Of the four AAC encoders that can be used by FFmpeg, it is the least recommended option.[12] References1. ^{{cite web|url=http://www.businesswire.com/news/home/20101109005339/en/VisualOn-Joins-Open-Handset-Alliance-Enhance-Multimedia|title=VisualOn Joins the Open Handset Alliance to Enhance the Multimedia Capabilities of the Android Platform|date=2010-11-09|publisher=VisualOn}} 2. ^https://www.ce.org/Membership/Membership-Directory.aspx 3. ^http://dashif.org/members/ 4. ^http://www.ineoquest.com/ineoquest-technologies-partners-with-visualon-to-help-customers-improve-their-online-streaming-initiatives/ 5. ^{{cite web|title=VisualOn AAC encoder source code|url=https://android.googlesource.com/platform/frameworks/base/+/android-4.0.4_r2.1/media/libstagefright/codecs/aacenc/|website=Android Git|accessdate=4 January 2015}} 6. ^{{cite web|title=libstagefright AAC decoder legality should be checked/clarified|url=https://code.google.com/p/android/issues/detail?id=16431|website=Android Issue Tracker|accessdate=4 January 2015}} 7. ^{{cite web|title=Discussion regarding the release of the Fraunhofer FDK encoder|url=http://www.hydrogenaud.io/forums/index.php?showtopic=95989|website=Hydrogen Audio|accessdate=4 January 2015}} 8. ^{{cite web|title=vo-aacenc Releases|url=https://github.com/mstorsjo/vo-aacenc/releases|accessdate=4 January 2015}} 9. ^{{cite web|title=AAC Encoding Guide|url=https://trac.ffmpeg.org/wiki/Encode/AAC#libvo_aacenc|website=FFmpeg documentation|accessdate=1 August 2014}} 10. ^{{cite web|title=Encoding AAC|url=https://wiki.libav.org/Encoding/aac|website=Libav documentation|accessdate=4 January 2015}} 11. ^{{cite web|author1=Kamedo2|title=FFmpeg native encoder quality assessment|url=http://d.hatena.ne.jp/kamedo2/20120729/1343545890|accessdate=5 January 2015|language=ja|date=2012-07-29}} 12. ^{{cite web|title=AAC Encoding Guide/FAQ|url=https://trac.ffmpeg.org/wiki/Encode/AAC#WhichencodershouldIuseWhatprovidesthebestquality|website=FFmpeg documentation|accessdate=5 January 2015}} Links
2 : Companies established in 2003|Companies based in San Jose, California |
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