@inproceedings{jumisko2005evaluation,
  abstract = {Subjectively perceived video quality is a critical factor when
adopting new mobile video applications. When video is used in
mobile networks the most important requirements are related to
low bitrates, framerates and the screen size of mobile device. In
two tests we investigated the effects of codecs and combinations
of audio and video streams with low bitrates and different
contents on the perceived video quality of mobile devices. The
first test showed that the codec H.264 produced the most
satisfying video quality, but the quality was not high enough for
the presentation of textual information. In the second test, the
audio-video ratio 32/128kbps was found to be the most pleasant,
but there were content dependent variations.},
  added-at = {2011-11-07T09:30:46.000+0100},
  author = {Jumisko-Pyykkö, Satu and Häkkinen, Jukka},
  biburl = {https://www.bibsonomy.org/bibtex/28369d7f800f4152ffd453bad08220065/armandinho},
  booktitle = {ACM Multimedia},
  crossref = {conf/mm/2005},
  ee = {http://doi.acm.org/10.1145/1101149.1101270},
  interhash = {33bf30d28f9fe79f97afb71d96dc8a42},
  intrahash = {8369d7f800f4152ffd453bad08220065},
  isbn = {1-59593-044-2},
  keywords = {subjective_evaluation mobile_device},
  pages = {535-538},
  privnote = {   本文做了两个主观测评实验，首先是比较了一些视频编解码标准，结果是H.264最令人满意；其次是在限定视频+音频码率的情况下寻找不同场景最优视频/音频码率之比，结论是与场景相关，对于运动激烈的冰球比赛需要视频比例高一些而对于比较平缓的MV或者新闻则音频比例高一些，这个结果与直观猜测相同。总体上128/32是一个相对较优的结果。
   值得注意的地方是本文提到的quality perception和quality production的区分；进行主观评测的实验方法和论文写法(如participants)；将视频和音频作为一个整体进行考量的思想。
   还有一些结论可以记住：
   1. 好的音频质量对于观众视觉效果的评测也有帮助
   2. 帧率和感知质量(perceived quality)不是简单的线性关系，视场景而定
   3. 通常来说立体声效果好于单声道，但是码率低的时候采用单声道更好
   },
  publisher = {ACM},
  timestamp = {2011-11-07T09:30:46.000+0100},
  title = {Evaluation of subjective video quality of mobile devices},
  url = {http://dblp.uni-trier.de/db/conf/mm/mm2005.html#Jumisko-PyykkoH05},
  year = 2005
}

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In the second test, the audio-video ratio 32/128kbps was found to be the most pleasant, but there were content dependent variations.","added-at":"2011-11-07T09:30:46.000+0100","author":[{"propositions":[],"lastnames":["Jumisko-Pyykkö"],"firstnames":["Satu"],"suffixes":[]},{"propositions":[],"lastnames":["Häkkinen"],"firstnames":["Jukka"],"suffixes":[]}],"biburl":"https://www.bibsonomy.org/bibtex/28369d7f800f4152ffd453bad08220065/armandinho","booktitle":"ACM Multimedia","crossref":"conf/mm/2005","ee":"http://doi.acm.org/10.1145/1101149.1101270","interhash":"33bf30d28f9fe79f97afb71d96dc8a42","intrahash":"8369d7f800f4152ffd453bad08220065","isbn":"1-59593-044-2","keywords":"subjective_evaluation mobile_device","pages":"535-538","privnote":"本文做了两个主观测评实验，首先是比较了一些视频编解码标准，结果是H.264最令人满意；其次是在限定视频+音频码率的情况下寻找不同场景最优视频/音频码率之比，结论是与场景相关，对于运动激烈的冰球比赛需要视频比例高一些而对于比较平缓的MV或者新闻则音频比例高一些，这个结果与直观猜测相同。总体上128/32是一个相对较优的结果。 值得注意的地方是本文提到的quality perception和quality production的区分；进行主观评测的实验方法和论文写法(如participants)；将视频和音频作为一个整体进行考量的思想。 还有一些结论可以记住： 1. 好的音频质量对于观众视觉效果的评测也有帮助 2. 帧率和感知质量(perceived quality)不是简单的线性关系，视场景而定 3. 通常来说立体声效果好于单声道，但是码率低的时候采用单声道更好 ","publisher":"ACM","timestamp":"2011-11-07T09:30:46.000+0100","title":"Evaluation of subjective video quality of mobile devices","url":"http://dblp.uni-trier.de/db/conf/mm/mm2005.html#Jumisko-PyykkoH05","year":"2005","bibtex":"@inproceedings{jumisko2005evaluation,\n abstract = {Subjectively perceived video quality is a critical factor when\r\nadopting new mobile video applications. When video is used in\r\nmobile networks the most important requirements are related to\r\nlow bitrates, framerates and the screen size of mobile device. In\r\ntwo tests we investigated the effects of codecs and combinations\r\nof audio and video streams with low bitrates and different\r\ncontents on the perceived video quality of mobile devices. The\r\nfirst test showed that the codec H.264 produced the most\r\nsatisfying video quality, but the quality was not high enough for\r\nthe presentation of textual information. In the second test, the\r\naudio-video ratio 32/128kbps was found to be the most pleasant,\r\nbut there were content dependent variations.},\n added-at = {2011-11-07T09:30:46.000+0100},\n author = {Jumisko-Pyykkö, Satu and Häkkinen, Jukka},\n biburl = {https://www.bibsonomy.org/bibtex/28369d7f800f4152ffd453bad08220065/armandinho},\n booktitle = {ACM Multimedia},\n crossref = {conf/mm/2005},\n ee = {http://doi.acm.org/10.1145/1101149.1101270},\n interhash = {33bf30d28f9fe79f97afb71d96dc8a42},\n intrahash = {8369d7f800f4152ffd453bad08220065},\n isbn = {1-59593-044-2},\n keywords = {subjective_evaluation mobile_device},\n pages = {535-538},\n privnote = { 本文做了两个主观测评实验，首先是比较了一些视频编解码标准，结果是H.264最令人满意；其次是在限定视频+音频码率的情况下寻找不同场景最优视频/音频码率之比，结论是与场景相关，对于运动激烈的冰球比赛需要视频比例高一些而对于比较平缓的MV或者新闻则音频比例高一些，这个结果与直观猜测相同。总体上128/32是一个相对较优的结果。\r\n 值得注意的地方是本文提到的quality perception和quality production的区分；进行主观评测的实验方法和论文写法(如participants)；将视频和音频作为一个整体进行考量的思想。\r\n 还有一些结论可以记住：\r\n 1. 好的音频质量对于观众视觉效果的评测也有帮助\r\n 2. 帧率和感知质量(perceived quality)不是简单的线性关系，视场景而定\r\n 3. 通常来说立体声效果好于单声道，但是码率低的时候采用单声道更好\r\n },\n publisher = {ACM},\n timestamp = {2011-11-07T09:30:46.000+0100},\n title = {Evaluation of subjective video quality of mobile devices},\n url = {http://dblp.uni-trier.de/db/conf/mm/mm2005.html#Jumisko-PyykkoH05},\n year = 2005\n}\n\n","author_short":["Jumisko-Pyykkö, S.","Häkkinen, J."],"key":"jumisko2005evaluation","id":"jumisko2005evaluation","bibbaseid":"jumiskopyykk-hkkinen-evaluationofsubjectivevideoqualityofmobiledevices-2005","role":"author","urls":{"Link":"http://doi.acm.org/10.1145/1101149.1101270","Paper":"http://dblp.uni-trier.de/db/conf/mm/mm2005.html#Jumisko-PyykkoH05"},"keyword":["subjective_evaluation mobile_device"],"metadata":{"authorlinks":{}},"html":""},"bibtype":"inproceedings","biburl":"http://www.bibsonomy.org/bib/author/Satu?items=1000","dataSources":["XeLEW5BY7sLoPuZNq"],"keywords":["subjective_evaluation mobile_device"],"search_terms":["evaluation","subjective","video","quality","mobile","devices","jumisko-pyykkö","häkkinen"],"title":"Evaluation of subjective video quality of mobile devices","year":2005}