Web-based Video Research Articles

Integrating telehealth in to ‘business as usual’: Is it really possible?

The Royal Children’s Hospital, Melbourne, began offering web-based telehealth video consultation in 2011, with the principle being that telehealth should be integrated into ‘business as usual’. In telehealth literature, key differences between telehealth and in-person consultations can make this hard to achieve, so an audit was performed that revealed many small gaps in the process. A total of 125 telehealth appointments were booked during the study period. Of these, 13% (n = 16) were rescheduled, cancelled or changed to face-to-face appointments, and up to two main issues were identified for the remaining appointments. Some 69% of the remaining 108 appointments (n = 75) were completed successfully, with 23% (n = 25) completely seamless end to end. Overall, 39 issues were administrative (40%), 34 technical (35%) and 24 scheduling (25%); nine (8%) required some minor troubleshooting. For long-term sustainability, integrating telehealth into business as usual needs to remain the target. Scheduling and technical glitches were the main barriers to seamless telehealth. Several issues have now been addressed with the introduction of an electronic medical record, and the development of standardised processes and staff training.

Characteristics and outcomes of psychology referrals in palliative care.

230 Background: Despite high distress, a small percentage of cancer patients are referred for psychological care. MD Anderson’s interdisciplinary Palliative Care team recruited 2 clinical psychologists in 9/2013. The demand for services exceeded capacity; thus a 3rd psychologist and 3 counselors were added in 6/2015. Methods: Retrospective review of 2827 unique patients (6451 total contacts) from 9/1/2013 to 2/29/2016, including billable (psychologists) and non-billable (counselors) services. Results: Psychologists saw 1958 unique patients (4987 contacts): 1662 (85%) inpatients and 296 (15%) outpatients. Mean inpatient and outpatient session length was 37 (SD = 15) and 51 (SD = 19) minutes, respectively. 865 (44%) patients had 1 session, 507 (26%) had 2, and 585 (30%) had 3 or more. At first visit, DSM-5 diagnoses were: 1681 (86%) adjustment disorders and 226 (12%) major mood or anxiety disorders. Most first visits included assessment (N = 1666; 85%); other services were also provided: 1545 (79%) supportive expressive counseling; 300 (15%) family counseling; 114 (6%) cognitive-behavioral therapy (CBT); and 40 (2%) relaxation skills. From 6/2015-2/2016, counselors saw 869 unique patients (1464 contacts): 759 (87%) outpatients, 99 (11%) inpatients, and 11 (1%) outreach through web-based video or phone. Mean session length for outpatient, inpatient, and outreach was respectively, 37 (SD = 17), 34 (SD = 18), and 17 (SD = 8) minutes. 560 (64%) patients had 1 session, 166 (19%) had 2, and 143 (17%) had 3 or more. Services at first visit included: 994 (93%) supportive expressive counseling; 654 (61%) assessment; 139 (13%) relaxation skills; 99 (9%) CBT; and 73 (7%) acceptance and commitment therapy (ACT). Conclusions: The 128% increase in psychology services after expanding providers underscores the value placed by the Palliative Care team. With the majority receiving only 1 session, results indicate the need to improve screening for earlier referral, allowing for more sophisticated services such as CBT and ACT, which are most effective for major mood or anxiety disorders and may prevent adjustment disorders from progressing to greater clinical distress. Our new efforts at outreach could also enhance access and types of services provided.

Post-9/11 Veterans and Their Partners Improve Mental Health Outcomes with a Self-directed Mobile and Web-based Wellness Training Program: A Randomized Controlled Trial.

BackgroundVeterans with history of deployment in the Global War on Terror face significant and ongoing challenges with high prevalences of adverse psychological, physical, spiritual, and family impacts. Together, these challenges contribute to an emerging public health crisis likely to extend well into the future. Innovative approaches are needed that reach veterans and their family members with strategies they can employ over time in their daily lives to promote improved adjustment and well-being.ObjectiveThe objective of this study was to evaluate effects of use of a Web-based, self-directed program of instruction in mind- and body-based wellness skills to be employed by Global War on Terror veterans and their significant relationship partners on mental health and wellness outcomes associated with postdeployment readjustment.MethodsWe recruited 160 veteran-partner dyads in 4 regions of the United States (San Diego, CA; Dallas, TX; Fayetteville, NC; and New York, NY) through publicity by the Iraq and Afghanistan Veterans of America to its membership. Dyads were randomly allocated to 1 of 4 study arms: Mission Reconnect (MR) program alone, MR plus the Prevention and Relationship Enhancement Program (PREP) for Strong Bonds weekend program for military couples, PREP alone, and waitlist control. We administered a battery of standardized and investigator-generated instruments assessing mental health outcomes at baseline, 8 weeks, and 16 weeks. Dyads in the MR arms were provided Web-based and mobile app video and audio instruction in a set of mindfulness-related stress reduction and contemplative practices, as well as partner massage for reciprocal use. All participants provided weekly reports on frequency and duration of self-care practices for the first 8 weeks, and at 16 weeks.ResultsDuring the first 8-week reporting period, veterans and partners assigned to MR arms used some aspect of the program a mean of 20 times per week, totaling nearly 2.5 hours per week, with only modest declines in use at 16 weeks. Significant improvements were seen at 8 and 16 weeks in measures of posttraumatic stress disorder, depression, sleep quality, perceived stress, resilience, self-compassion, and pain for participants assigned to MR arms. In addition, significant reductions in self-reported levels of pain, tension, irritability, anxiety, and depression were associated with use of partner massage.ConclusionsBoth veterans and partners were able to learn and make sustained use of a range of wellness practices taught in the MR program. Home-based, self-directed interventions may be of particular service to veterans who are distant from, averse to, or prohibited by schedule from using professional services. Leveraging the partner relationship may enhance sustained use of self-directed interventions for this population. Use of the MR program appears to be an accessible, low-cost approach that supports well-being and reduces multiple symptoms among post-9/11 veterans and their partners.Trial RegistrationClinicaltrials.gov NCT01680419; https://clinicaltrials.gov/ct2/show/NCT01680419 (Archived by WebCite at http://www.webcitation.org/6jJuadfzj)

Tipping the scales: educating surgeons about medical malpractice

BackgroundIn Pennsylvania, medical malpractice premiums are a major cost to surgeons. Yet surgeons often have little if any education in the basics of tort litigation or how to manage their risk. This work describes one approach for educating academic faculty surgeons on current concepts of medical malpractice and provide some guidance on how to “tip the scales of justice”; or minimize the risks of being named in a malpractice claim. Materials and MethodsThe course had five parts: the basics of medical malpractice, the cost of malpractice insurance, current departmental claims experience, strategies for decreasing the risk of being named in a claim, and an overview of malpractice reforms. An anonymous seven question survey was cast in a five-point Likert scale format. A weighted average of 4.5 or above was considered satisfactory. Two free text questions asked about positive and negative aspects of the course. ResultsEighty of 95 (84%) faculty attended either in person or by reviewing a web-based video. Quantitatively, five of seven questions had a weighted average of more than 4.5 (n = 48, response rate = 60%). Qualitatively, the course was reviewed very favorably. ConclusionsThe high percentage of participation and overall survey results suggest that the course was successful. This course was one facet of an approach to decrease the risk of malpractice claims. Unique aspects of this course include an emphasis on state law, department-specific data, and strategies to minimize risk of future claims. Given the state-specific nature of malpractice claims and litigation, individual departments must particularize similar presentations.

Advance Signaling Cost for Multicast Fast Reroute Proxy Mobility Management

Background/Objectives: Mobile data traffic over IP has grown very rapidly in size. This huge increase in size creates high demand performance on network that supports mobile multicast services. This motivates the development of a better performance procedure with better signaling cost. Methods/Statistical analysis: A mathematical evaluation of signaling cost for multicast network mobility management namely Proxy Mobile IPv6 (PMIPv6). The signaling cost is derived from a novel combination of Multicast only Fast Reroute (MFR) and predictive Context Transfer (CT) with network mobility management. The signaling cost is designated base on the improved signaling call flow of the advanced method combination. It is calculated as the location updates and the packet delivery cost of the call flow. Findings: This combined procedure helps to mitigate unnecessary multicast network mobility traffic as usage increases. From the results it is clearly shows that the location update for the advanced signaling cost remain consistent regardless of the traffic usage. Where else for the standard method the signaling cost increases significantly, in parallel with the traffic increase. This is hardly because of the reduced location updates and the packet delivery cost of the novel combination procedure. Therefore through this implementation better signaling cost formula is brought forward. Application/Improvements: The advanced signaling cost helps to overcome performance degradation in multicast mobility management application such as live Internet video, Internet-video-to-TV, online video, webcam viewing, video conference and web-based video monitoring.

Do Men Know Which Lower Bowel Symptoms Warrant Medical Attention? A Web-Based Video Vignette Survey of Men in Western Australia.

The current study aims to explor how men would advise other men about seeking help for lower bowel symptoms and also to determine the factors that may influence help seeking. A purposive sample of Western Australian men aged 18 years and older was recruited for the study. Participants completed 8 of the 28 randomly assigned video vignettes (video clips) displaying men (older or younger) with various combinations of one or more lower bowel symptoms. Participants were asked if the person in the vignette should seek health advice. Subsequently, the participants answered a set of questions based on the Health Belief Model. A total of 408 participants (response rate = 51%) answered 3,264 vignettes. Participants younger than 50 years, participants who were not tertiary educated and those who had lower incomes, or those living in regional or remote areas were less likely to advise help seeking from general practitioner (GP). Participants who visited their general practitioner less frequently were also less likely to advisehelp seeking. There was a trend to consider unintentional weight loss and diarrhea as minor symptoms not necessitating medical attention compared with rectal bleeding. The findings suggest for a need to improve public awareness among men about the need to seek timely medical advice for lower bowel symptoms in primary care. The importance of early presentation of persistent lower bowel symptoms must be specifically targeted at men younger than 50 years, those with lower incomes, or residing in regional or remote areas.

Therapy Online: A Web-Based Video Support Group for Family Caregivers of Survivors With Traumatic Brain Injury.

This innovative descriptive study explores the benefits of a traumatic brain injury (TBI) caregiver support group intervention provided using videoconferencing within a password protected Web-based platform. Ten caregivers of family members with TBI were registered to a password-protected Web site (Caring for Others) that provided information about caring for a person with TBI and access to a videoconferencing support group intervention program. Where needed, caregivers were provided with computer equipment, Internet access, and training to negotiate the Web site links. Two groups of 5 caregivers of survivors of TBI participated (average age of survivor-20 years, average time since injury-4.6 years) and met online with a trained clinician weekly for 10 sessions. Using directed content analysis, transcripts of each session were coded with NVivo software. The content analysis reported group process themes, therapeutic interventions used, caregiver outcomes, and the challenges for clinicians delivering a therapeutic intervention online. Traumatic brain injury caregivers shared similar concerns and problem-solving strategies for managing caregiving tasks. Overall, participants found the sessions helpful for managing the emotional impact of caring for a family member with TBI.

Religion, Gender, and Sexuality among Youth in Canada

Since 2012, we have been investigating Religion, Gender and Sexuality among Youth (18-25 year olds) in Canada (RGSY). Ours is a mixed-methods study that has used a web-based survey, interviews, and video diaries to collect data from 486 Canadian youth. Our project maps onto research that was done in the United Kingdom by Andrew Kam-Tuck Yip, Sarah-Jane Page, and Michael Keenan. They kindly offered to let us use and modify their questionnaire for our own web-based survey and now we are at the point of having some interesting international comparisons. As well, researchers in several other countries are beginning similar studies.

The Transitional Experience of Family Caring for Their Child With a Tracheostomy

The purpose of this qualitative study was to describe the family experience of caring for their child with a tracheostomy due to a compromised airway during the transition from hospital to home, and to identify types of support that families request to be successful caregivers. This study used a qualitative descriptive design with focus groups to answer semi-structured interview questions. The investigators followed basic content analysis to interpret descriptive data using three-person consensus. Eighteen family members participated. Four themes emerged: "This is not the life I had planned: coming to accept the new reality;" "Don't make the hospital your home; don't make your home a hospital;" "Caregivers engage with providers that demonstrate competence, confidence, attentiveness, and patience;" and "Participants value the opportunity to give back and help others." Growth in the family caregiver role leads to personal transformation demonstrated by increased confidence, finding joy from their child, becoming an advocate for their child, and a resource for others. Family members described the transition to being 'in charge,' the relationship with the provider, and being able to advocate for getting the resources they needed in the home. Relationships are as critical as teaching skills to families during hospitalization. Family members see considerable value in connecting with care providers. In addition, there is a desire to share their experience with other families that are beginning a similar journey. Participants requested a support approach that included competent providers, Web-based video education for skills training, family-to-family connection, and continued family group support after discharge.

The impact of reflective thinking activities in e-learning: A critical review of the empirical research

The purpose of this study is to reveal the impact of e-learning environments supported with reflective thinking activities on students’ academic success, social presence perception and on their motivation. Experimental design with pretest-posttest control group was used in the study. Three different learning environment were compared within the scope of the study. Students in Study Group I completed the experimental process using the podcasts supported with reflective thinking activities whilst students in Study Group II completed the process using podcasts which were not supported with reflective thinking activities and students in Study Group III completed the experimental process using web-based videos. The study was carried out for 6 weeks on 103 students studying in a distance education programme of a university. Both qualitative and quantitative data collection techniques were used; and the data was collected using achievement test, social presence perception scale, Instructional Materials Motivation Survey and student opinion identification form. The results of the study revealed that use of podcasts supported with reflective activities were more efficient in ensuring post-test success and motivation, compared to others. In terms of social presence perception, on the other hand, there was no significant difference between study groups. Based on the results of qualitative data analysis, recommendations were made on how to use reflective thinking activities in e-learning environment designs and on how to utilize podcast technology.

Engaging Minority Youth in Diabetes Prevention Efforts Through a Participatory, Spoken-Word Social Marketing Campaign.

To examine the reach, efficacy, and adoption of The Bigger Picture, a type 2 diabetes (T2DM) social marketing campaign that uses spoken-word public service announcements (PSAs) to teach youth about socioenvironmental conditions influencing T2DM risk. A nonexperimental pilot dissemination evaluation through high school assemblies and a Web-based platform were used. The study took place in San Francisco Bay Area high schools during 2013. In the study, 885 students were sampled from 13 high schools. A 1-hour assembly provided data, poet performances, video PSAs, and Web-based platform information. A Web-based platform featured the campaign Web site and social media. Student surveys preassembly and postassembly (knowledge, attitudes), assembly observations, school demographics, counts of Web-based utilization, and adoption were measured. Descriptive statistics, McNemar's χ2 test, and mixed modeling accounting for clustering were used to analyze data. The campaign included 23 youth poet-created PSAs. It reached >2400 students (93% self-identified non-white) through school assemblies and has garnered >1,000,000 views of Web-based video PSAs. School participants demonstrated increased short-term knowledge of T2DM as preventable, with risk driven by socioenvironmental factors (34% preassembly identified environmental causes as influencing T2DM risk compared to 83% postassembly), and perceived greater personal salience of T2DM risk reduction (p < .001 for all). The campaign has been adopted by regional public health departments. The Bigger Picture campaign showed its potential for reaching and engaging diverse youth. Campaign messaging is being adopted by stakeholders.

Gender Bias in Sports-Media Analytics

Critical media scholars have argued that popular sports media, as a cultural enabler, reinforces the traditional hegemonic masculinity associated with sport. This article, through a detailed content analysis of web-based espn Sport Science videos focused on sport-related performances of elite athletes, examined the extent to which they reinforce or diverge from the typical underrepresentation of women in sports media. The entire espn Sport Science online video library was analyzed. Differences in content and amount of time devoted to the analysis of male versus female athletes were the focus of the study. Results indicated that, as with other media coverage of male and female athletes, there was a bias toward men. Of the total time across all videos, 88% was devoted to analyses of male athletes. These data are consistent with previous research on the lack of coverage of women’s sports. However, contrary to typical media coverage of sports, the videos, regardless of the gender of the athlete, focused on their athleticism and had comparable biomechanical analyses.

Flipping the switch: The feasibility of a &amp;#147;think aloud&amp;#148; flipped-classroom approach to clinical reasoning instruction

Background: Clinical reasoning is a fundamental skill in medical and allied health professions. Implementation of the evidence-based “think aloud” method (i.e. describing cognitive processes through verbalization) for teaching clinical reasoning has been variable due to time and resource constraints in healthcare education. Materials & Methods: To explore the feasibility of implementing the think aloud method for teaching clinical reasoning, we piloted a flipped-classroom model of instruction to free live-synchronous educational time in a medical school clerkship. Two asynchronous web-based videos were implemented prior to synchronous case-based discussion applying the think aloud method. Performance was assessed by baseline and end-of-clerkship examination and NBME shelf exam; clinical skills by clinical evaluation; satisfaction and student learning styles by survey. Results: The flipped-curriculum was piloted in 38 students; mean age 25+2.2 years; 63% male. Baseline knowledge was low (mean baseline score 43+21%) and improved significantly (mean final score 70+23%; increase 29%, 95%CI 20-37%, p

Watch what happens: using a web-based multimedia platform to enhance intraoperative learning and development of clinical reasoning

BackgroundWe aim to determine whether observed operations or internet-based video review predict improved performance in the surgery clerkship. MethodsA retrospective review of students' usage of surgical videos, observed operations, evaluations, and examination scores were used to construct an exploratory principal component analysis. Multivariate regression was used to determine factors predictive of clerkship performance. ResultsCase log data for 231 students revealed a median of 25 observed cases. Students accessed the web-based video platform a median of 15 times. Principal component analysis yielded 4 factors contributing 74% of the variability with a Kaiser–Meyer–Olkin coefficient of .83. Multivariate regression predicted shelf score (P < .0001), internal clinical skills examination score (P < .0001), subjective evaluations (P < .001), and video website utilization (P < .001) but not observed cases to be significantly associated with overall performance. ConclusionsUtilization of a web-based operative video platform during a surgical clerkship is an independently associated with improved clinical reasoning, fund of knowledge, and overall evaluation. Thus, this modality can serve as a useful adjunct to live observation.

Media Naturalness and Compensatory Adaptation: Counterintuitive Effects on Correct Rejections of Deceitful Contract Clauses

Research problem: Deciding whether to accept or reject contract clauses in software purchasing contracts is a complex communication-related task, which is likely faced daily by a multitude of software purchasing professionals in a variety of organizations. Research question: What are the effects of viewing contract clauses as video clips, compared to viewing clauses as text only, in terms of cognitive effort, communication ambiguity, and correctness in the acceptance or rejection of clauses in software purchasing contracts? Literature review: The literature on the Media Richness and Media Naturalness theories suggest that viewing contract clauses as video clips should reduce cognitive effort and communication ambiguity. However, while Media Richness theory suggests that correctness in the acceptance or rejection of clauses in software purchasing contracts should increase with the use of video clips, Media Naturalness theory suggests a neutral overall effect. Methodology: An experiment was conducted in which student participants were asked to either accept or reject 20 clauses from a software contract, placing themselves in the position of buyers. Of the 20 clauses, 6 were intentionally deceitful and potentially harmful to the buyer. Approximately half of the participants reviewed the contract clauses as web-based text, and the remaining as web-based video clips. Results and conclusions: Viewing contract clauses as video clips was associated with significantly less cognitive effort and less communication ambiguity than viewing the clauses as text only. Counterintuitively, increases in perceived cognitive effort and communication ambiguity were associated with more successful identification and rejection of deceitful contract clauses. The combination of these competing effects led to an overall neutral effect of the medium on the correctness in the acceptance or rejection of clauses. These findings are consistent with expectations based on Media Naturalness theory, particularly its compensatory adaptation proposition, and inconsistent with expectations based on Media Richness theory.

홍보동영상 제작 서비스를 위한 전략메타정보 기반 장면템플릿 분류 및 추천

In this paper, we introduce a new web-based PR video making service system. Many video editing tools have required tough editing skill or scenario planning stage for a just simple PR video making. Some users may prefer a simple and fast way than sophisticated and complex functionality. To solve this problem, it is important to provide easy user interface and intelligent classification and recommendation scheme. Therefore, we propose a new template classification and recommendation scheme using a topic modeling method. The proposed scheme has the big advantage of being able to handle the unstructured meta data as well as structured one.

The effect of framing on surrogate optimism bias: A simulation study

PurposeTo explore the effect of emotion priming and physician communication behaviors on optimism bias. Materials and MethodsWe conducted a 5 × 2 between-subject randomized factorial experiment using a Web-based interactive video designed to simulate a family meeting for a critically ill spouse/parent. Eligibility included age at least 35 years and self-identifying as the surrogate for a spouse/parent. The primary outcome was the surrogate's election of code status. We defined optimism bias as the surrogate's estimate of prognosis with cardiopulmonary resuscitation (CPR) > their recollection of the physician's estimate. ResultsOf 373 respondents, 256 (69%) logged in and were randomized and 220 (86%) had nonmissing data for prognosis. Sixty-seven (30%) of 220 overall and 56 of (32%) 173 with an accurate recollection of the physician's estimate had optimism bias. Optimism bias correlated with choosing CPR (P < .001). Emotion priming (P = .397), physician attention to emotion (P = .537), and framing of CPR as the social norm (P = .884) did not affect optimism bias. Framing the decision as the patient's vs the surrogate's (25% vs 36%, P = .066) and describing the alternative to CPR as “allow natural death” instead of “do not resuscitate” (25% vs 37%, P = .035) decreased optimism bias. ConclusionsFraming of CPR choice during code status conversations may influence surrogates' optimism bias.

Impact of a web-based intervention on the awareness of medication adherence.

Medication nonadherence is a widely recognized problem that leads to adverse outcomes and increased health care costs. Reasons for medication nonadherence are multifactorial, and patient awareness of the salience of medication adherence is critical. The purpose of this research was to assess the impact of a pharmacist-led, web-based video presentation in increasing patients' awareness of the importance of medication adherence. Patients aged 35 years and above, taking at least 1 chronic prescription medication were included in the study (n=166). Patients completed a pre-survey, watched a pharmacist-led web-based video presentation educating them on the importance of medication adherence, then completed a 1-month follow-up survey. The primary outcome was measurement of change in patients' awareness of the importance of medication adherence. Results indicated a statistically significant increase in the primary outcome of increasing awareness of the importance of medication adherence. More patients in the follow-up survey indicated that it was important for their health to take their medications around the same time daily (P=0.002), and more patients identified that their family will be impacted as a result of their medication nonadherence (P=0.001) as compared to the pre-survey. More patients in the follow-up survey reported that they expected to experience fewer emergency room visits (P=0.0001) and anticipated that they would get more time to spend with friends and family (P=0.0039) as benefits of taking medications as prescribed. A pharmacist-led web-based video presentation may be a low-cost intervention to increase patients' awareness of the importance of medication adherence.

TaylorActive--Examining the effectiveness of web-based personally-tailored videos to increase physical activity: a randomised controlled trial protocol.

BackgroundPhysical inactivity levels are unacceptably high and effective interventions that can increase physical activity in large populations at low cost are urgently needed. Web-based interventions that use computer-tailoring have shown to be effective, though people tend to ‘skim’ and ‘scan’ text on the Internet rather than thoroughly read it. The use of online videos is, however, popular and engaging. Therefore, the aim of this 3-group randomised controlled trial is to examine whether a web-based physical activity intervention that provides personally-tailored videos is more effective when compared with traditional personally-tailored text-based intervention and a control group.Methods/designIn total 510 Australians will be recruited through social media advertisements, e-mail and third party databases. Participants will be randomised to one of three groups: text-tailored, video-tailored, or control. All groups will gain access to the same web-based platform and a library containing brief physical activity articles. The text-tailored group will additionally have access to 8 sessions of personalised physical activity advice that is instantaneously generated based on responses to brief online surveys. The theory-based advice will be provided over a period of 3 months and address constructs such as self-efficacy, motivation, goal setting, intentions, social support, attitudes, barriers, outcome expectancies, relapse prevention and feedback on performance. Text-tailored participants will also be able to complete 7 action plans to help them plan what, when, where, who with, and how they will become more active. Participants in the video-tailored group will gain access to the same intervention content as those in the text-tailored group, however all sessions will be provided as personalised videos rather than text on a webpage. The control group will only gain access to the library with generic physical activity articles. The primary outcome is objectively measured physical activity. Secondary outcomes include website engagement and retention, quality of life, depression, anxiety, stress, sitting time, sleep and psychosocial correlates of physical activity. Outcomes will be measured at baseline, 3, and 9 months.DiscussionThis study presents an ideal opportunity to study the effectiveness of an isolated feature within a web-based physical activity intervention and the knowledge generated from this study will help to increase intervention effectiveness.Trial registrationAustralian New-Zealand Clinical Trial Registry: ACTRN12615000057583. Registered 22 January 2015.CQUniversity Ethics Project Number: H14/07-163

WVSNP-DASH: Name-Based Segmented Video Streaming

Video streaming from sensors and miniaturized devices is attractive for a wide range of web-based applications, e.g., remote surveillance. Existing web-based video streaming frameworks, such as the hypertext transfer protocol (HTTP) live streaming (HLS) and the motion picture experts group’s dynamic adaptive streaming over HTTP (MPEG-DASH), have dependencies between the individual video segments and a manifest file that contains video metadata. Also, existing web-based video players are limited to fetching video segments over TCP/IP networks. The video segment dependencies complicate video segment distribution by resource-constrained source nodes, which may employ non-TCP/IP protocols, such as Zigbee. This paper proposes and evaluates a wireless video sensor network platform compatible DASH (WVSNP-DASH) framework and a WVSNP-DASH player (WDP) for flexible web-based access of video from sensors and other miniaturized source nodes. The WVSNP-DASH framework is based on independently playable video segments with a specific naming syntax that conveys elementary metadata so as to facilitate flexible search, transfer, distribution, and playback. The WDP employs elementary processes of version 5 of the hypertext markup language (HTML5) for video buffering and playback. Video segments are fetched into the HTML5 file system space, permitting flexible video fetching over a wide range of protocols, including sensor network protocols. Comparative evaluations of a WDP prototype with optimized HLS and MPEG-DASH players indicate that WDP has low client (receiver) load, while providing significant potential for power savings on the source node serving the video streams.