Impact of mobile devices and usage location on perceived multimedia quality

Catellier, Andrew; Pinson, Margaret H.; Ingram, William A.; Webster, A.

doi:10.1109/qomex.2012.6263834

Cited by 27 publications

(15 citation statements)

References 10 publications

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“…Experiments are usually performed in laboratories where videos are displayed on a TV set, but natural environments, like home or office, and different media for observing videos, like mobile devices, can be used [57,58].…”

Section: Subjective Approachmentioning

confidence: 99%

A concise review of the quality of experience assessment for video streaming

Maia

Yehia

Errico

2015

Computer Communications

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Section: Subjective Approachmentioning

confidence: 99%

A concise review of the quality of experience assessment for video streaming

Maia

Yehia

Errico

2015

Computer Communications

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“…Results show that perceived quality is indeed impacted by the display device and that subjects may have higher quality expectations for devices with a larger screen. Catellier et al [19] also assessed the impact of different mobile devices, ranging from a smartphone to a laptop, on perceived multimedia quality. They found that the influence of the device and screen size has no significant influence on quality perception in the case of watching highquality video sequences.…”

Section: Overview Of Subjective Video Quality Experiments On Mobmentioning

confidence: 99%

Subjective Quality Assessment of Longer Duration Video Sequences Delivered Over HTTP Adaptive Streaming to Tablet Devices

Staelens

Meulenaere

Claeys

et al. 2014

IEEE Trans. on Broadcast.

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Abstract-HTTP Adaptive Streaming facilitates video streaming to mobile devices connected through heterogeneous networks without the need for a dedicated streaming infrastructure. By splitting different encoded versions of the same video into small segments, clients can continuously decide which segments to download based on available network resources and device characteristics. These encoded versions can, for example, differ in terms of bitrate and spatial or temporal resolution. However, as a result of dynamically selecting video segments, perceived video quality can fluctuate during playback which will impact end-users' Quality of Experience. Subjective studies have already been conducted to assess the influence of video delivery using HTTP Adaptive Streaming to mobile devices. Nevertheless, existing studies are limited to the evaluation of short video sequences in controlled environments. Research has already shown that video duration and assessment environment influence quality perception. Therefore, in this article, we go beyond the traditional ways for subjective quality evaluation by conducting novel experiments on tablet devices in more ecologically valid testing environments using longer duration video sequences. As such, we want to mimic realistic viewing behaviour as much as possible. Our results show that both video content and the range of quality switches significantly influence end-users' rating behaviour. In general, quality level switches are only perceived in high motion sequences or in case switching occurs between high and low quality video segments. Moreover, we also found that video stallings should be avoided during playback at all times.Index Terms-Quality of Experience (QoE), Subjective video quality assessment, HTTP adaptive streaming, Mobile video, Tablet devices.

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“…The parameters of the device that affect QoE are screen resolution, screen orientation and video player. Andrew Catellier et al made an exploratory experiment [7] using five different mobile devices in two testing environments to understand how the perceived quality of video sequences differed among many devices. The mobile devices ranged from a smartphone to a 17'' laptop.…”

Section: Introductionmentioning

confidence: 99%

Power consumption and bandwidth savings with video transcoding to mobile device-specific spatial resolution

Dragić

Hofman

Kovač

et al. 2014

2014 9th International Symposium on Communication Systems, Networks &Amp; Digital Sign (CSNDSP)

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Usage of mobile devices for multimedia content playback is drowning the battery power rapidly. High quality videos which are streamed from the internet are power consuming and demand high network bandwidth. We measured the power consumption and bitrate of video sequences in respect to different spatial resolutions and used acceptability-based Quality of Experience (QoE) model for determining the impact of video resolution on QoE. The results showed that both power and bandwidth can be saved without noticeable reduction in QoE when transcoding video to a resolution specific to the mobile device instead of using standard video resolutions.

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Impact of mobile devices and usage location on perceived multimedia quality

Cited by 27 publications

References 10 publications

A concise review of the quality of experience assessment for video streaming

A concise review of the quality of experience assessment for video streaming

Subjective Quality Assessment of Longer Duration Video Sequences Delivered Over HTTP Adaptive Streaming to Tablet Devices

Power consumption and bandwidth savings with video transcoding to mobile device-specific spatial resolution

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