Mobile Video Research Articles

The Development of Mobile Short Video Communication in the Context of the Mobile Internet

In the context of the mobile Internet, continuously upgraded media and increasing numbers of terminal devices has enabled information communication to become instant and abundant. The lifestyle of the public has also changed with the evolution of the Internet. The public’s growing enthusiasm for watching short videos on smart phones are one example. This paper discusses changes in the communication environment, namely the concept and development of mobile short videos. Application of Lasswell’s “5W” model to mobile short video communication, is used to analyze this form of communication, using Meipai, a Chinese mobile short video application, as a case study. Suggestions for potential development in this area are also considered.

Online Teaching Wireless Video Stream Resource Dynamic Allocation Method considering Node Ability

At present, wireless network technology is advancing rapidly, and intelligent equipment is gradually popularized, which rapidly developed the mobile streaming media business. All kinds of mobile video applications have enriched people’s lives by carrying huge traffic randomly. Wireless networks (WNs) are facing an unprecedented burden, which allocates very important wireless video resources. Similarly, in WNs, the network status is dynamic and the terminal is heterogeneous, which causes the traditional video transmission system to fail to meet the needs of users. Hence, Scalable Video Coding (SVC) has been introduced in the video transmission system to achieve bit rate adaptation. However, in a strictly hierarchical traditional computer network, the wireless resource allocation strategy usually takes throughput as the only way to optimize the target, and it is terrible to make more optimizations for scalable video transmission. This article proposed a cross-layer design to enable information to be transmitted between the wireless base station and the video server to achieve joint optimization. To improve users’ satisfaction with video services, the wireless resource allocation problem and the video stream scheduling problem are jointly considered, which keep the optimization space larger. Based on the proposed architecture, we further study the design of wireless resource allocation algorithms and rate-adaptive algorithms for the scenario of multiuser transmission of scalable video in the Long-Term Evolution (LTE) downlink. Experimental outcomes have shown substantial performance enhancement of the proposed work.

МОДЕЛЬ ОБУЧЕНИЯ СИНТЕТИЧЕСКИМ ВИДАМ РЕЧЕВОЙ ДЕЯТЕЛЬНОСТИ С ПРИМЕНЕНИЕМ МЕТОДА «МОБИЛЬНОЕ ВИДЕО»

Currently, there are a lot of writing and talking about the optimization of the educational process using new technologies, models, methods, techniques, forms, the appearance of which is conditioned by the new reality, the modern educational environment. We offer a model of learning synthetic types of speech activity, in which the method of “mobile video” is applied, for use in teaching Russian to foreign students. The development of the model of learning synthetic types of speech activity is due to the fact that the modern educational space dictates a new approach to the choice of educational material, as which are increasingly used various texts of online discourse. Thus, the search for ways to work with texts of online discourse leads to the creation of new effective methods and techniques (for example, the “mobile video” method), which allow to create a flexible model, it is designed to provide one lesson with skills for different types of speech. “Mobile video” is defined by us as a method allowing the teacher to involve the student in “live”, real communication, erasing the boundaries between speaking, listening, reading and writing. Therefore, the basis of the model of learning synthetic types of speech activities, built on algorithms, including various methods of working with texts of the network discourse, aimed at simultaneous formation of oral and written language skills, is the method “mobile video”. This model promotes the formation of communicative competence in the teaching of Russian to foreigners with the help of traditional and new methods and teaching methods, such as: mobile video, voice, comments in social networks, post publication, video subtitling, hyperlinks and etc. The proposed model of learning synthetic types of speech activity has been tested, the results of experimental training show that the application of the proposed model contributes to the formation of skills necessary for communication in a natural language environment, it also enables effective delivery of training activities using the potential of information and communication space.

Case Study of Player Behaviour in a Mobile Free-to-play Interactive Story Telling Game

With mobile gaming becoming ever more popular, it is necessary to understand various aspects of player behaviour in those games. This is especially true for free-to-play games as revenue comes from a small subset of the playerbase. This paper presents a large-scale analysis of data collected over 9 months, comprising over 10 million players of a case study free-to-play mobile interactive story telling video game. The data is analysed from a temporal standpoint, followed by presentation of findings in three important player engagement aspects: retention, conversion (i.e., players becoming payers), and lifetime revenue collected. These findings confirm the importance of early conversion in casual mobile games as the retention is low due to wide target audience. Additionally, players who convert very early also tend to spend more in the game in general. Most of the monetization depends on a small fraction of large spenders as one fifth of the entire revenue comes from only 2% of spenders. The paper stresses out the key checkpoints in casual gameplay that are potentially most profitable topics for further research and player targeted actions. The insights of long-term analysis are relevant to both academia and industry in the efforts to optimise service quality, players' satisfaction, and profitability.

The effect of country of origin on the perceived quality of e-services

A vast amount of research shows that country of origin information can influence consumers' evaluations of perceived quality. However, most investigations of country of origin effects have been conducted in the realm of tangible goods. Scant research has investigated whether country of origin influences consumers' evaluations of perceived quality in the context of intangible electronic services, (i.e., e-services), such as mobile applications, websites and video games. This article fills that void. Based on categorisation theory, we propose that the effect of country of origin information on perceived quality is mediated by the activation of stereotypical attributes associated with tangible products. Accordingly, when country of origin information triggers tangible stereotypical attributes, country of origin effects will not be diagnostic for evaluations of e-services. Thus, country of origin effects observed in tangible goods will not spill over to e-services. The results of an experimental study support this claim. The implications for country of origin spillover effects as well as for managers of e-services are also discussed.

Understanding needs of stakeholders and outcomes desired from a home-based intervention program for "difficult to treat" schizophrenia and related disorders: A qualitative study.

Background:We aimed to understand the needs of service users – families and patients with schizophrenia and related disorders, and mental health professionals (MHPs) and expectations from a home-based psychosocial intervention program in Indian setting.Materials and Methods:We conducted four focus group discussions (FGDs) with families, patients with schizophrenia and related disorders and MHPs. Two FGDs were conducted with families and one each with the patients and MHPs. Participants in families and MHP group were asked about their primary concerns in caring for the patients, perceived needs of patients and the areas that can be targeted through a home-based psychosocial intervention program. All FGDs were audio-recorded and verbatim transcribed. Content analysis of the data was done to obtain a final list of needs and expected outcomes from a psychosocial intervention supported by families.Results:Six key priority needs were identified for intervention: medication adherence, activities of daily living, promoting physical health, engagement in meaningful work, building of social and support networks and information about all aspects of illness. Priority outcomes identified by MHPs were mostly clinical like symptom reduction, fewer rehospitalisation while families and patients focused more on psychosocial outcomes, such as improvement of wellbeing, having relationships, engagement in meaningful activities, better organization of the day, increased self-respect, reduced stress, lesser interference, and critical comments. All groups suggested that book or mobile app or video could be used.Conclusion:This qualitative study shows that while both clinicians and service users consider recovery from schizophrenia and related disorders to be important, they differ on what they prioritise.

Метод реконструкції відеозображень для підвищення ефективності доставки в інфокомунікаційних системах аеросегменту

Today, the main tool of effective management at both the local, regional, and state levels is the availability of appropriate information support. This especially applies to the security and defense sector, where the availability of the necessary information support is the main requirement for the effective response of departmental bodies (relevant law enforcement agencies) to crisis situations arising both in society and the state as a whole. In connection with this, the role of video information support as a means for prompt decision-making is significantly increased. This is due to the fact that the key principles of the implementation of video information provision are timeliness (operational) and reliability. For this purpose, stationary and mobile photo and video surveillance systems are quite actively used. The use of the latter is closely related to the aviation segment — unmanned aerial vehicles and complexes, the role of which is increased by the presence of such properties as scale and mobility. However, at the same time, the following problematic factors arise related to the use of wireless communication technologies for data delivery to the final addressee: an imbalance between the ever-increasing volumes of data and the bandwidth of data transmission channels; the influence of obstacles arising in the process of video data delivery on the level of reliability of the reconstructed video image. It should be noted that the use of existing methods of interference-resistant coding to solve the above-mentioned problems leads to a significant increase in the volume of video data, which is critical in the conditions of using wireless communication technologies — video is an information resource transmitted with significant time delays. For this purpose, a method of video data reconstruction is being developed based on the use of identifiers (markers) of uneven code structures assigned to the elements of clusters formed as a result of the restructuring of the information space by structural feature. A distinctive feature of the developed method is the independent decompositional statistical decoding of individual code subsets according to structural features. This ensures, due to the use of additional service information, the localization of errors in the process of data reconstruction of the video information resource. A distinctive feature of the developed method is the independent decompositional statistical decoding of individual code subsets according to structural features. This ensures, due to the use of additional service information, the localization of errors in the process of data reconstruction of the video information resource. A distinctive feature of the developed method is the independent decompositional statistical decoding of individual code subsets according to structural features. This ensures, due to the use of additional service information, the localization of errors in the process of data reconstruction of the video information resource.

NeuSaver: Neural Adaptive Power Consumption Optimization for Mobile Video Streaming

Video streaming services strive to support high-quality videos at higher resolutions and frame rates to improve the quality of experience (QoE). However, high-quality videos consume considerable amounts of energy on mobile devices. This paper proposes NeuSaver, which reduces the power consumption of mobile devices when streaming videos by applying an adaptive frame rate to each video chunk without compromising the user experience. NeuSaver generates a policy that can determine the appropriate frame rate for each video chunk using reinforcement learning (RL). The RL model automatically learns the policy that optimizes the QoE goals based on previous observations. NeuSaver also uses an asynchronous advantage actor-critic algorithm to reinforce the RL model quickly and robustly. Streaming servers that support NeuSaver preprocess videos into segments with various frame rates, which is similar to the process of creating videos with multiple bit rates in dynamic adaptive streaming over HTTP. NeuSaver utilizes the commonly used H.264 video codec. We evaluated NeuSaver in various experiments and a user study through four video categories along with the previously proposed model. Our experiments showed that NeuSaver effectively reduces the power consumption of mobile devices when streaming video by an average of 16.14% and up to 23.12% while maintaining high QoE.

Content-Adaptable ROI-Aware Video Storage for Power-Quality Scalable Mobile Streaming

The demand for mobile video streams is constantly increasing. With this demand comes a need for mobile devices to receive more videos at ever increasing quality. However, due to the large size of video data and intensive computational requirements, video streaming requires frequent memory access that consume a substantial amount of mobile device power; as a result, the battery life of mobile devices is limited. In this paper, we present a video content-adaptable Region-of-Interest (ROI)-aware video storage technique that promotes power savings. During the video encoding process on the transmitting server, based on the macroblock variance and ROI characterization, the “macroblocks of interest” are identified and embedded in the encoded bitstream. In the decoding process, a new frame buffer with dynamic power-quality trade-off is presented to adapt to the macroblock characteristics during run-time. Results from the system-level and circuit-level simulations show that the proposed technique enables substantially more truncated bits and significant power savings while delivering similar or better video quality as compared to other state-of-the-art solutions.

Adaptive Computation Offloading for Mobile Augmented Reality

Augmented reality (AR) underpins many emerging mobile applications, but it increasingly requires more computation power for better machine understanding and user experience. While computation offloading promises a solution for high-quality and interactive mobile AR, existing methods work best for high-definition videos but cannot meet the real-time requirement for emerging 4K videos due to the long uploading latency. We introduce ACTOR, a novel computation-offloading framework for 4K mobile AR. To reduce the uploading latency, ACTOR dynamically and judiciously downscales the mobile video feed to be sent to the remote server. On the server-side, it leverages image super-resolution technology to scale back the received video so that high-quality object detection, tracking and rendering can be performed on the full 4K resolution. ACTOR employs machine learning to predict which of the downscaling resolutions and super-resolution configurations should be used, by taking into account the video content, server processing delay, and user expected latency. We evaluate ACTOR by applying it to over 2,000 4K video clips across two typical WiFi network settings. Extensive experimental results show that ACTOR consistently and significantly outperforms competitive methods for simultaneously meeting the latency and user-perceived video quality requirements.

THE IMPLEMENTATION OF MOBILE VIDEO TASK TECHNIQUE IN TEACHING SPEAKING AT THE ELEVENTH GRADE STUDENTS OF SMKN 1 KEMPO

The aimed of this research was to find out the improve of students’ speaking ability by using Mobile Video Task that focused on students’ fluency at the Eleventh Grade of SMKN 1 Kempo. The researcher used Pre-experimental Design with one group pre-test and post-test, and data collection based on the test. The sample of this research was class XI which consisted of 20 students. The sample was taken by using Purposive Sampling Technique. The research findings showed that the students’ difference before and after using mobile video task was significantly different. The students’ pre-test mean score in term of fluency was 65.15 to be 75.45 in post-test. Based on the findings, it can be concluded that mobile video task technique was effective to improve the speaking ability of the students at the Eleventh Grade of SMKN1 Kempo in the Academic Year 2020/2021.

Transient and Long-Term Improvements in Cognitive Processes following Video Games: An Italian Cross-Sectional Study.

The aim of the present study is to compare the short- and long-term effects of video-gaming by using the same measurements. More precisely, habitual and occasional video-gamers were compared so as to analyze the long-term effects. An ABABABA design was used to analyze the short-term effects. The first A refers to baseline measurements: Visual RT, Auditory RT, Aim trainer RT, Go/No-Go RT and N-Back RT. The first B refers to 30 min of gaming, the second A refers to the measurements used in the baseline, the second B refers to 60 min of a video game, the third A refers to the same measurements used in the baseline, the third B refers to a 30-min rest, and finally, the fourth A refers to the measurements used in the baseline. Seventy participants, twenty-nine habitual video-gamers and forty-one occasional video-gamers, participated in the study. The results showed a temporary improvement of cognitive functions (Visual RT, Auditory RT, Aim trainer RT, Go/No-Go RT and N-Back RT) in the short term and a strong enhancement of cognitive functions in the long term. The results are discussed in light of Flow Theory and the automatization process. Contribution of the study: The contribution of this research is to highlight that despite there being a transient enhancement of executive and cognitive functions through the use of mobile video games in the short-term period, with a decrease of performance after a 30-min rest, there is a strong increase of cognitive performance in the long-term period. Flow Theory and the automatization process together can explain this apparent inconsistency between the positive increase of long-term performance and the transient increase of short-term performance. One limitation of the present research is that it is not possible to distinguish whether the long-term enhancements can be attributed either to continued practice in the use of video games compared to non-gamers, or to the possibility that gamers are already predisposed to video game playing. Future research should address this issue.

Implementation Method Of Remote Assistance Instruction Based On Hardware Secure Encryption

As a public service enterprise related to energy security and national economy and people’s livelihood, the safe work is related to all walks of life and thousands of households. In power scenarios, the remote cooperative guidance needs to ensure the security of data communication. The implementation method of remote cooperative guidance in power scenarios based on hardware security encryption realizes the functions of terminal registration, user online and offline management, message call, control signaling negotiation, audio and video real-time call, graphic guidance and target tracking and labeling. Configuration TF card encryption at the mobile terminal chip and video server configuration high speed encryption card, WIFI / 4 g wireless networks to establish encryption channel, remote collaborative guidance terminal power scene registration messages, messages, call, and by guiding and structured data security encryption transmission, the unstructured data such as audio stream and video stream is encrypted. It not only realizes the secure encryption of message communication, but also guarantees the high-speed transmission of audio and video streams.

Intelligent Analysis of Core Identification Based on Intelligent Algorithm of Core Identification

The communication recognition of mobile phone core is a test of the development of machine vision. The size of mobile phone core is very small, so it is difficult to identify small defects. Based on the in-depth study of the algorithm, combined with the actual needs of core identification, this paper improves the algorithm and proposes an intelligent algorithm suitable for core identification. In addition, according to the actual needs of core wire recognition, this paper makes an intelligent analysis of the core wire recognition process. In addition, this paper improves the traditional communication image recognition algorithm and analyzes the data of the recognition algorithm according to the shape and image characteristics of the mobile phone core. Finally, after constructing the functional structure of the system model constructed in this paper, the system model is verified and analyzed, and on this basis, the performance of the improved core recognition algorithm proposed in this paper is verified and analyzed. From the results of online monitoring and recognition, the statistical accuracy of mobile phone core video recognition is about 90%, which has higher accuracy in mobile phone core image recognition than traditional recognition algorithms. The core line recognition algorithm based on deep learning and machine vision is effective and has a good practical effect.

Многофункциональная система безопасности угольных шахт – визуализация событий (горнотехнических процессов) с рабочего места шахтера

The paper reviews the use of mobile video monitoring equipment in coal mines. The most common option is the use of stationary video cameras with real-time video streaming to the mine dispatcher's control monitor via cables. Despite all the benefits of the information obtained, this method has certain limitations due to the specific features of the mine atmosphere, i.e. high humidity and dust levels, as well as the impossibility to organize video monitoring over the entire length of the mine workings. Therefore, mobile video monitoring equipment, both portable and vehicle-based, is efficient supplement to the stationary video cameras. The portable devices include smart phones and the battery-powered head lights with an integrated video camera, which have recently become very popular. In both cases, an important consideration, in addition to the actual video capturing, is the issue of transmitting video data to the top level, i.e. to the mine dispatcher's control panel. The following options are possible: connection to the mine wireless network hotspots via radio channel, reading the information in the lamp rooms when leaving the mine and real-time broadcasting from the mine to the top level. The assumption is made that in order to implement the fastest (and the most efficient) way that works without delays between capturing and transmitting of video data to the daylight surface, such as the latter of the options above, a communications infrastructure based on wireless and cable networks needs to be deployed in the mine workings. The required infrastructure is present in a number of systems designed to locate miners inside the mine workings as part of a multifunctional security system, which enables continuous radio communication of individual devices with infrastructure nodes and, therefore, real-time video data transmission.

Focus on Multipath TCP: Introduction, Benefits and Future Research Trends

With the rapid development of mobile video technology and the increasing demand for online videoapplications, people have higher demands on the transmission performance and user experience ofreal-time Internet applications such as video. Multipath transmission is considered as an ideal solutionto improve video transmission performance and user experience quality in wireless networkenvironment. In recent years, the academic research on multipath transmission protocol focuses ondata scheduling, energy consumption optimization, fairness, congestion control and so on, but theresearch on network security is insufficient, especially the research on the anti-damage analysis androbustness optimization of multipath transmission. Based on a comprehensive analysis of the latestresearch trends, this paper makes a beneficial exploration of the future development of end-to-endmultipath transmission over the Internet based on Multipath TCP (MPTCP).

Experiences of Physical Therapists and Professional Leaders With Implementing a Toolkit to Advance Walking Assessment Poststroke: A Realist Evaluation.

ABSTRACTObjectiveThe iWalk study showed significant increase in use of the 10-Meter Walk Test (10MWT) and 6-Minute Walk Test (6MWT) poststroke following provision of a toolkit. This paper examined the influence of contextual circumstances on use of the toolkit and implementation strategy across acute care and inpatient and outpatient rehabilitation settings.MethodsA theory-based toolkit and implementation strategy was designed to support guideline recommendations to use standardized tools for evaluation of walking, education, and goal-setting poststroke. The toolkit comprised a mobile app, video, and educational guide outlining instructions for 3 learning sessions. After completing learning sessions, 33 physical therapists and 7 professional leaders participated in focus groups or interviews. As part of a realist evaluation, the study compared and synthesized site-specific context-mechanism-outcome descriptions across sites to refine an initial theory of how the toolkit would influence practice.ResultsAnalysis revealed 3 context-mechanism-outcomes: (1) No onsite facilitator? No practice change in acute care: Without an onsite facilitator, participants lacked authority to facilitate and coordinate the implementation strategy; (2) Onsite facilitation fostered integration of select practices in acute care: When onsite facilitation occurred in acute care, walk test administration and use of reference values for patient education were adopted variably with high functioning patients; (3) Onsite facilitation fostered integration of most practices in rehabilitation settings: When onsite facilitation occurred, many participants incorporated 1 or both tests to evaluate and monitor walking capacity, and reference values were applied for inpatient and outpatient education and goal setting. Participants preferentially implemented the 10MWT over the 6MWT because set-up and administration were easier and a greater proportion of patients could walk 10 m.ConclusionFindings underscore contextual factors and activities essential to eliciting change in assessment practice in stroke rehabilitation across care settings.ImpactThis study shows that to foster recommended walking assessment practices, an onsite facilitator should be present to enable learning sessions and toolkit use.

The Lived Body and Embodied Instructional Practices in Maritime Basic Safety Training

This paper explores the role of the lived body in maritime professional training. By focusing on how instructors include students’ subjective experiencing bodies as an educational resource and context for directives and demonstrations, the study aims at informing training of professionals for survival in emergency situations onboard ships. Drawing on a mobile video ethnography and on phenomenological analyses of the presence/absence of the body in experience, the study illustrates how instructors direct students’ attention towards or away from their appearing corporal field depending on the stage of the training. The article documents three instructional practices incorporating students’ lived embodiment during training: coping with distress by foregrounding the lived body, backgrounding the lived body for outer-directed action and imagining others’embodied experiences. The study contributes to our understanding of intercorporeal practices in instructional interaction and guidance in simulation-based vocational training.

Effectiveness of Micro-class Mobile Teaching Video Method Combined with Psycho-cardiology Nursing in Postoperative Nursing for Coronary Heart Disease Patients Underwent Percutaneous Coronary Intervention and Training

Objective. To explore the effectiveness of micro-class mobile teaching video method combined with psycho-cardiology nursing in postoperative nursing for coronary heart disease (CHD) patients underwent percutaneous coronary intervention (PCI) and training. Methods. The clinical information of 120 patients underwent PCI admitted to our hospital (12.2018-12.2020) were retrospectively analyzed, and the patients were divided into the control group and the experimental group, with 60 cases each. Psycho-cardiology nursing was performed to the control group, and the micro-class mobile teaching video method was introduced to the experimental group on this basis to compare the application effect on postoperative nursing and training. Results. After nursing intervention, LVEF levels and ADL scores of both groups were increased, of which the experimental group were much higher (P all<0.05); the BNP levels and SAQ, HAMA and HAMD scores of both groups were decreased, of which the experimental group were much lower (P all<0.05); the problem-solving ability and satisfaction scores of the experimental group were higher than those of the control group (P<0.05); and the experimental group obtained a significantly lower incidence rate of adverse cardiac events in the between-group comparison (16.67% vs 3.33%, P<0.05). Conclusion. The combined therapy conducted to CHD patients underwent PCI has a good effect in postoperative nursing and training, can improve the patients’ cardiac function, reduce the angina severity, alleviate the anxiety and depression, promote the quality of life and problem-solving ability, and lower the incidence rate of adverse cardiac events, which is worthy of promotion and application.

Evaluation of a community-based mobile video breastfeeding intervention in Khayelitsha, South Africa: The Philani MOVIE cluster-randomized controlled trial.

BackgroundIn South Africa, breastfeeding promotion is a national health priority. Regular perinatal home visits by community health workers (CHWs) have helped promote exclusive breastfeeding (EBF) in underresourced settings. Innovative, digital approaches including mobile video content have also shown promise, especially as access to mobile technology increases among CHWs. We measured the effects of an animated, mobile video series, the Philani MObile Video Intervention for Exclusive breastfeeding (MOVIE), delivered by a cadre of CHWs (“mentor mothers”).Methods and findingsWe conducted a stratified, cluster-randomized controlled trial from November 2018 to March 2020 in Khayelitsha, South Africa. The trial was conducted in collaboration with the Philani Maternal Child Health and Nutrition Trust, a nongovernmental community health organization. We quantified the effect of the MOVIE intervention on EBF at 1 and 5 months (primary outcomes), and on other infant feeding practices and maternal knowledge (secondary outcomes). We randomized 1,502 pregnant women in 84 clusters 1:1 to 2 study arms. Participants’ median age was 26 years, 36.9% had completed secondary school, and 18.3% were employed. Mentor mothers in the video intervention arm provided standard-of-care counseling plus the MOVIE intervention; mentor mothers in the control arm provided standard of care only. Within the causal impact evaluation, we nested a mixed-methods performance evaluation measuring mentor mothers’ time use and eliciting their subjective experiences through in-depth interviews.At both points of follow-up, we observed no statistically significant differences between the video intervention and the control arm with regard to EBF rates and other infant feeding practices [EBF in the last 24 hours at 1 month: RR 0.93 (95% CI 0.86 to 1.01, P = 0.091); EBF in the last 24 hours at 5 months: RR 0.90 (95% CI 0.77 to 1.04, P = 0.152)]. We observed a small, but significant improvement in maternal knowledge at the 1-month follow-up, but not at the 5-month follow-up. The interpretation of the results from this causal impact evaluation changes when we consider the results of the nested mixed-methods performance evaluation. The mean time spent per home visit was similar across study arms, but the intervention group spent approximately 40% of their visit time viewing videos. The absence of difference in effects on primary and secondary endpoints implies that, for the same time investment, the video intervention was as effective as face-to-face counseling with a mentor mother. The videos were also highly valued by mentor mothers and participants. Study limitations include a high loss to follow-up at 5 months after premature termination of the trial due to the COVID-19 pandemic and changes in mentor mother service demarcations.ConclusionsThis trial measured the effect of a video-based, mobile health (mHealth) intervention, delivered by CHWs during home visits in an underresourced setting. The videos replaced about two-fifths of CHWs’ direct engagement time with participants in the intervention arm. The similar outcomes in the 2 study arms thus suggest that the videos were as effective as face-to-face counselling, when CHWs used them to replace a portion of that counselling. Where CHWs are scarce, mHealth video interventions could be a feasible and practical solution, supporting the delivery and scaling of community health promotion services.Trial registrationThe study and its outcomes were registered at clinicaltrials.gov (#NCT03688217) on September 27, 2018.