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Mapping and Review of Audiovisual Editors and Streaming Platforms Based on Collaborative Technologies in Real Time

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Mapping and Review of Audiovisual Editors and Streaming Platforms Based on Collaborative Technologies in Real Time Mapping and review of audiovisual editors and streaming platforms based on collaborative technologies in real time Brett Stalbaum Cicero I. da Silva Jane de Almeida Speculative Design Brazil Telehealth Networks PPG Education, Art and University of California, San Federal University of São Paulo History of Culture Diego (UCSD) (Unifesp) Mackenzie University 9500 Gilman Drive, Rua Sena Madureira, 1500 Rua da Consolação, 930, La Jolla, CA 4o andar, São Paulo, SP São Paulo, SP [email protected] [email protected] [email protected] Maria Amelia Eliseo Vic Von Poser Department of Computing and Informatics Mf Art Digital Mackenzie University University of the Arts (UAL) Rua da Consolação, 930, 45-65 Peckham Road, London, São Paulo, SP SE5 8UF [email protected] [email protected] ABSTRACT popular are: a) YouTube; b) Livestream; c) Justin TV; d) XSplit Broadcaster; The main goal of this article is to map and review real time video e) Kaltura; f) Clipbudget; g) Bambuser; h) Wirecast; i) Open Cast streaming collaborative softwares, in order to analyze platforms that are also able to edit films. Real time high resolution film Some stream tools are only dedicated to video features, others transmission (4k, 8k or above) results in the excess of data stream and store the content for later viewing and editing, if the generated and, consequently, in a high value for investment in user wants to edit the material in post-production. Softwares who editing, storage and content distribution features. The retrieval and have video editors allow users to insert clips, mark the beginning storage of the data (content) becomes complex and expensive. and end of a video, and crop unwanted materials. Users can even This article aims to design a software review for the use of add a soundtrack. systems that are applicable to the needs directly related to the Below is a brief description of the most popular streaming tools, digital education field, considering that nowadays the video is an some of them with editing properties: important tool to support teaching and learning processes and a) YouTube is the most widely used streaming model needs a better structuring from the educational managers of today. The platform allows the editing of the material communication and information technologies. transmitted after the streaming is finished. However, it does not allow consecutive editing of the transmitted KEYWORDS content, i.e. it is not possible to insert audio, cut or even Video processing, video editors, streaming change any content consecutively to the streaming. To carry out a streaming on YouTube you need specific tools that make the connection between the camera, the 1 INTRODUCTION microphone and the compression system that Youtube This section shows the current scenario regarding editor tools, will use. For the sake of simplicity, the XSplit highlighting their properties related to the ideal features for an on- Broadcaster tool stands out for its screen capture, line video editor with streaming. Among the existing tools with streaming and addition of plugins that help in post- possibilities of streaming on the web, the best known and most production, as well as being more intuitive and already adapted for Youtube use. Another option is to use Quik ___________________________________________________________________ (G + Hangout on Air), which performs content In: V Workshop “O Futuro da Videocolaboração” (WCT-Video 2018), Salvador, streaming through the use of the Hangout tool. When Brasil. Anais do XXIV Simpósio Brasileiro de Sistemas Multimídia e Web: Workshops e Pôsteres. Porto Alegre: Sociedade Brasileira de Computação, 2018. the Hangout transmission is finalized, the content can be ©2018 SBC – Sociedade Brasileira de Computação. made available on Youtube. ISBN: 978-85-7669-435-9. b) In addition to this tool, there is the Kaltura software, which has both its commercial and its open source 179 WebMedia 2018: Workshops e Pôsteres, Salvador, Brasil Cicero I. da Silva et al. version with several plug-in options for post-production supported by these platforms, which means that it is not possible and web application modules, such as integration with to separate a video stream feed from the Bambuser application, the CMS (Custom Management System) WordPress for example, and broadcast it in real time at the same time on (VideoPress), with the Joomla CMS, among others. Youtube, i.e, Youtube, in this case, accepts a variety of video c) Wirecast Go. The tool enables real-time transmission feeds, not getting dependent only on their own structures of through mobile devices such as tablets and cell phones. transmission of video feeds. The characteristics of Wirecast are: c.1) a single camera (front or rear of mobile devices) live; Software Formats Players c.2) is capable of streaming directly to YouTube with just one click; Bambuser MP4 Bambuser c.3) add images, logos and graphics to your photo library stream; Youtube MP4, FLV, Youtube, XSplit c.4) basic editing (resizing and moving graphics); MPEG, MOV, Broadcaster, Quick c.5) unlimited streaming; entre outros (G+ Hangout) d) Skype Qik: video sharing application that allows you to send audio content to your closest friends on your Windows Phone, iPhone or Android; Below is a brief list of the most popular streaming tools, some of e) Bambuser: this platform is a good option to use with them with editing properties: mobile technologies (cell phones and tablets). a. Wowza1 b. Wirecast2 Among the video capture software, a fair option is the Open 3 Broadcaster Software, which is free and interoperable with other c. Vjdirector 4 systems, such as Kaltura, Adobe Connect and Red5. It is one of d. WSE Manager 5 the most used systems by gamers to produce their live game e. Open Cast streaming via Youtube and Vimeo, among others. f. 236 The streaming software system is important because it allows the captured content to be sent through other platforms. In addition, 3 VIDEO EDITORS: STATE OF THE ART these softwares perform the encoding of the video and audio As soon as there is no real time editing software platform, signal, creating a specific video file that can be transmited through currently the process of assembling or editing an audiovisual these platforms, such as Youtube, Vimeo, Wevideo, among product consists of selecting, ordering, and adjusting the plans or others. In systems that generate video display protocols, each tool moments in order to achieve the expected result. In this sense, this usually generates its own viewer, which makes it easy to display section reviews the top three most used, by it’s market share, the video stream both on Internet browsers and on the screens of video editor softwares and points out the lack of a feature that can mobile applications. This view is common in applications such as be, in the near future, crucial for professionals that work based on Bambuser, Qik etc. where you can view real-time streaming of live streaming of contents. Before the digital age, one can content streamed through your mobile (mobile or tablet) compare the editing process with writing a text on a typewriter. applications. In other video systems, such as Youtube, it is Before typing, the text should be well outlined, drafted and possible to send different video streams from the most varied revised; any subsequent changes to the text on paper were sources, since the compaction and reading systems of these complicated, time-consuming and costly. So were editions of viewers do not contemplate the reading of many formats and, in audiovisual products, in which the final product as a whole was this sense, it is necessary a software that "reads" the content and thought before going into the post-production process. At the presents it. However, these softwares do not allow users to view beginning of the cinema, these were physical processes like in real time a timeline with frames being accumulated one after cutting and gluing of films. With the evolution of technology, another. The streaming tools usually do not generate separate recordings began to use magnetic tapes (BETAMAX, VHS), to audio and video files, only allowing post editing of the content. select and re-record, which resulted in loss of material quality. Another lack of this kind of software is that there is no buffering, With these processes there was no opening for error or chance, which would allow the user to decide what they would like to save everything had to be thought out and planned in advance. To this and to "publish" in real time from the streaming. 1 See https://www.wowza.com/ 2 SOFTWARES FOR STREAMING 2 See http://www.telestream.net/wirecast/overview.htm 3 See http://nagashare.com/vjdirector/ 2.1 Real time systems 4 See http://wsemanager.com/ 5 The table below shows a comparative table between two online See http://www.opencast.org/ 6 See http://www.23video.com/api/ video platforms and the respective feeds of video streams 180 Mapping and review of audiovisual editors and streaming platforms WebMedia 2018: Workshops e Pôsteres, Salvador, Brasil based on collaborative technologies in real time type of edition we call "linear editing". With the advent of the 2009). It presented better features and a user-friendly interface, computer, "editing software" works with hardwares (Video Cards, with the possibility of greater interaction and manipulation of the HDS), including versions for personal computers. The first system material. In 2011, Apple released an update of this software called adopted by the market was the hardware and software mix created Final Cut X. In this new version, the software, which was the by NewTek Video Toaster for the Amiga 2000 computer, as most used by professionals in the field, has an interface and a shown in Figure 1.
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