Digital Video Tampering Detection and Localization: Review, Representations, Challenges and Algorithm

Digital videos are now low-cost, easy to capture and easy to share on social media due to the common feature of video recording in smart phones and digital devices. However, with the advancement of video editing tools, videos can be tampered (forged) easily for propaganda or to gain illegal advantages—ultimately, the authenticity of videos shared on social media cannot be taken for granted. Over the years, significant research has been devoted to developing new techniques for detecting different types of video tampering. In this paper, we offer a detailed review of existing passive video tampering detection techniques in a systematic way. The answers to research questions prepared for this study are also elaborated. The state-of-the-art research work is analyzed extensively, highlighting the pros and cons and commonly used datasets. Limitations of existing video forensic algorithms are discussed, and we conclude with research challenges and future directions.

Using Digital Tools for Studying About and Addressing Climate Change

Grounded in research-based examples, this chapter provides a resource for students, teachers, and researchers to critically engage with issues of climate change through leveraging the affordances of digital tools. In particular, the authors discuss the affordances and challenges of students using digital tools to address climate change. They also review research in this field, including studies on visualizations, analyzing information, social media, digital videos, digital role-play, video games, and virtual and augmented reality. The chapter describes how digital tools offer meaning-making possibilities for students to propose solutions to climate change through engaging multimodal narratives, as well as share their voices through digital activism. Considering that global climate change is perhaps the most serious problem human beings have ever faced, this chapter offers implications for curriculum and instruction to aid educators with designing digital projects for students to understand climate change and find ways to take a stand.

Designing a digital video based on storytelling in an e-learning environment and its effect on developing mental motivation and academic achievement among students at College of Education, King Saud University.

This research aimed to developing mental motivation and academic achievement among students at College of Education, King Saud University, through design a digital video based on storytelling in an e-learning environment. To achieve this goal, a sample of (62) students from College of Education at King Saud University was selected. The researcher divided them into experimental group of (30) students, who studied by using digital videos which designed based on storytelling in an e-learning environment, and control group of (32) students, who studied by traditional method, both groups were enrolling in the course of “Integrating Technology in Education”. The mental motivation measurement and academic achievement test were used as well as T-test for analyzing the research data. This research found the effectiveness of using digital video in an e-learning environment based on storytelling in developing mental motivation and academic achievement among students at College of Education, King Saud University.

VIAGEM PELO CÉU E FEIRAS DE MATEMÁTICA:

O contexto da crise gerada pela pandemia de COVID-19, que levou à suspensão das aulas presenciais, reforçou a necessidade do uso pedagógico de recursos tecnológicos nos processos de ensino-aprendizagem como ferramentas potenciais de apoio didático. O objetivo deste artigo é relatar a produção de conteúdo digital, vídeos e atividades interativas como incentivo ao ensino da Astronomia e da Matemática na Educação Infantil e séries iniciais do Ensino Fundamental. Para isso, foi criado, nas redes sociais, o perfil Viagem pelo Céu e utilizou-se a plataforma Powtoon para a produção de vídeos lúdicos. Como resultado, o projeto propagou informações científicas direcionadas ao público infantil, com alcance de outros públicos através das postagens nas redes sociais, reforçando a importância de atividades interativas para a alfabetização científica de estudantes.

Design and simulation of video monitoring structure over TCP/IP system using MATLAB

Video monitoring systems are undergoing an evolution from conventional analog to digital clarification to provide better rate and security over internet protocols. In addition, analog surveillance becomes insufficient to face enormous demand of security of system contains more than hundreds of camera often deployed in hotels environments far away from room control. This paper presents the design and simulation of a video monitoring scheme in excess of a transmission control protocol/internet protocol (TCP/IP) system using MATLAB. Sophisticated cameras could record directly high-definition digital videos based on digital technology which simply communicate the control room relaying on ordinary internet protocol infrastructure networks. This technology provides a flexible network interface over a wide variety of heterogeneous technology networks. Though, the acceptance of IP designed for video monitoring pretense severe difficulties in terms of power processing, system dependability, required bandwidth, and security of networks. The advantage of IP based video monitoring system has been investigated over conventional analog systems and the challenges of the method are described. The open research issues are still requiring a final solution to permits complete abandon against conventional technology of analog methods. In conclusion, the method to tackle the purpose of video monitoring in actual operation is proposed and verified properly by means of model simulation.

Practical Remote Workflow Solutions for Complex Digital Projects: Opportunities in a Pandemic

The spread of COVID-19 has created numerous challenges in the field of archive management. Limited in-house office space, furloughs of personnel, and inconsistency, has highlighted the potential for the Carl Albert Congressional Research and Studies Center Archives (Center) to develop and implement improved accessibility measures to thousands of linear feet of material. Addition ally, the Center has found unique opportunities to collaborate with multiple academic institutions to propose large-scale digitization program exhibitions using the Center’s remote workflow model. One of the largest, most complex collections the Center has worked with during this time is the Political Commercial Collection (the Collection), which holds 119,000 film, audio, and videotape recordings of commercials aired between 1936 and present. It is the largest collection of political commercials in the world. The Center has developed a working pilot digitization project that has currently resulted in access to 16,000 digital videos for public researchers and over 10,000 available for on-line streaming during the pilot phase between April 16, 2020, and December 1, 2020. This paper presents the practical application of the Center’s simplified “Linear Reciprocity Workflow Model” to provide a systematic solution for digital and long-term preservation of complex collections. The Center has proven that limited personnel and reduced resources need not interrupt continued access to archival repositories.

No-Reference Video Quality Assessment Based on Benford’s Law and Perceptual Features

No-reference video quality assessment (NR-VQA) has piqued the scientific community’s interest throughout the last few decades, owing to its importance in human-centered interfaces. The goal of NR-VQA is to predict the perceptual quality of digital videos without any information about their distortion-free counterparts. Over the past few decades, NR-VQA has become a very popular research topic due to the spread of multimedia content and video databases. For successful video quality evaluation, creating an effective video representation from the original video is a crucial step. In this paper, we propose a powerful feature vector for NR-VQA inspired by Benford’s law. Specifically, it is demonstrated that first-digit distributions extracted from different transform domains of the video volume data are quality-aware features and can be effectively mapped onto perceptual quality scores. Extensive experiments were carried out on two large, authentically distorted VQA benchmark databases.

Digital Videos in Accounting Education: A Study on Perceived Use and Satisfaction in the Light of Connectivism

In the light of the connectivism theory, the objective was to analyze the perception of use and satisfaction of accounting students about Edpuzzle, a digital video application. This tool was employed in four accounting courses using the cell phones of 92 students. A questionnaire was administered on-site and was structured in two parts. The first contained questions about the respondent's profile, and the second about the use and satisfaction with Edpuzzle. The results indicated that students liked to use Edpuzzle and felt satisfied, especially those under 21 years old. We also noticed significant correlations among the questions. For example, the positive association between interactivity and appropriateness of use of the Edpuzzle stands out. It is concluded, therefore, that the results corroborate the connectivism theory, which sustains that knowledge must suffer updates as the environment changes and that sharing is crucial for the creation of networks that feed each other. Edpuzzle helps in this regard.

Supporting students' academic literacies in post-COVID-19 times: Developing digital videos to develop students' critical academic reading practices

While embedding Academic Language and Literacies (ALL) instruction in discipline-specific courses is known to be effective, it is difficult to enact across the siloed university. Moreover, the move to online/ remote delivery during COVID-19 has necessitated greater focus on the development of online supports. This article reports on an effort to embed digital ALL support in a mandatory social research methods course, which we argue is particularly suited to academic literacies instruction. A series of digital videos were created to complement a literature review assignment, and were evaluated using video analytics, end-of-course student surveys, and individual interviews with tutors. Quantitative analysis of viewing patterns demonstrated that the majority of students accessed the videos multiple times, while qualitative data suggest that students generally had positive responses to the videos. However, thematic analysis of interviews with tutors showed that while they considered the content helpful, they also had reservations about the length and use of the videos. These findings clearly demonstrate the extent of the unmet need to integrate these types of approaches into undergraduate courses. We also argue that if universities wish to maintain currency in a shifting, globalised world, they must do more to foster the types of collaborative partnerships that facilitate effective ALL instruction in undergraduate coursework. These findings carry particular relevance for teaching and learning literacies in the wake of COVID-19, because digital video has become even more integral to higher education.