JP2014520422A - 受信ビットレートの動的適応方法および関連する受信機 - Google Patents
受信ビットレートの動的適応方法および関連する受信機 Download PDFInfo
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
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- Human Computer Interaction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
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Abstract
Description
v=0
o= − 11 IN IP4 192.168.1.33
s= Example of multimedia stream
b=RR:0
a=X−keyframe−period=2
a=control:*
a=range:npt=0−300
m=video 0 RTP/AVP 33
b=TIAS:500000
a=control:trackID=0
m=video 0 RTP/AVP 33
b=TIAS:1000000
a=control:trackID=1
m=video 0 RTP/AVP 33
b=TIAS:1500000
a=control:trackID=2
m=video 0 RTP/AVP 33
b=TIAS:2000000
a=control:trackID=3
PLAY rtsp://multimedia.exemple.com/stream/trackID=1 RTSP/1.0
Cseq: 833
Range: npt=0−2
Speed: 1
Range=i×d+t
RTSP/1.0 200 OK
Cseq: 834
Range: npt=0−2
RTP−Info: url=rtsp://multimedia.exemple.com/stream/trackID=1; seq=45102; rtptime=12345678
rangeduration=rtptime end−rtptime start
rtptime end=フィールドRTP―Infoのrtptime+90000
である。
Bi=バイト数×8/rangeduration
avgi+1=(1−α)×avgi+α×Bi
Δi=|Bi−avgi|
vari+1=(1−β)×vari+β×Δi
Bimax=avgi−4×vari
avgi+1=(avgi+Bi)/2、および
vari+1=avgi+1/10
PLAY rtsp://multimedia.exemple.com/stream/trackID=1 RTSP/1.0
Cseq: 833
Range: npt=2−4
Speed: 1.34
Claims (12)
- サーバ上に記憶されたオーディオビジュアル・プログラムをレシーバに接続された表示装置上に再生するために受信する方法であって、前記オーディオビジュアル・プログラムは前記サーバ上で少なくとも2つのバージョンで入手可能であり、前記バージョンの各々が、連続的に描画されるべき前記オーディオビジュアル・プログラムの部分をそれぞれ表す連続したデータ・ブロックを有しており、前記バージョンは、各々、同数のブロックを有しており、前記ブロックは、各々、前の画像を参照することなく符号化された画像から始まっており、前記方法は、レシーバ・レベルにおいて、
前記サーバによって第1のビットレートで送信された前記バージョンのうちの第1のバージョンから得られる少なくとも1つのブロックを有する前記オーディオビジュアル・プログラムの第1の部分を、送信プロトコルに従って受信するステップであって、前記第1の部分は前記サーバ上のファイルのサブセットであり、前記ファイルは複数の部分を含んでおり、前記複数の部分の各々の部分の位置が、前記ファイル内にインデックス付けによって示されている、該ステップと、
前記サーバによって前記第1のビットレートで送信された前記オーディオビジュアル・プログラムの前記第1の部分の受信後に帯域幅を特定するステップと、
制御プロトコルに従って、前記サーバに要求を送信するステップであって、前記制御プロトコルは、コマンドの使用によってコンテンツのリアルタイム送信を制御するようにされており、かつ、いくつかのデータ部分の中から送信されるべきデータ部分をファイル内で識別するようにされており、前記識別はインデックス付けによって実現されており、前記要求は、前記サーバと前記レシーバとの間の帯域幅の特定された値に従う、前記オーディオビジュアル・プログラムの前記バージョンのうちの1つでの前記オーディオビジュアル・プログラムの第2の部分の識別情報を含んでおり、前記識別情報は前記第2の部分の開始及び終了の時間マーカを含んでいる、該ステップと、
を含んでいることを特徴とする、前記方法。 - 前記要求は送信速度パラメータを更に含んでいることを特徴とする、請求項1に記載の方法。
- 前記受信するステップはRTP送信プロトコルを使用することを特徴とする、請求項1又は2に記載の、オーディオビジュアル・プログラムを受信する方法。
- 要求を送信する前記ステップはRSTP制御プロトコルを使用することを特徴とする、請求項1から3のいずれか1項に記載の、オーディオビジュアル・プログラムを受信する方法。
- 前記オーディオビジュアル・プログラムの前記バージョンが前記サーバ上に記憶された同一ファイル内に含まれていることを特徴とする、請求項1から4のうちの1項に記載の方法。
- 前記オーディオビジュアル・プログラムが、前記サーバ上で、前記同一ファイル内における前記オーディオビジュアル・プログラムの前記バージョンの位置特定に関する情報を含む記述ファイルに対応付けられていることを特徴とする、請求項1から5のいずれか1項に記載の方法。
- 前記サーバと前記レシーバとの間の利用可能な帯域幅の特定には、前記第1のビットレートで受信された前記オーディオビジュアル・プログラムの前記部分の少なくとも1つの特徴の分析が含まれていることを特徴とする、請求項1から6のいずれか1項に記載の方法。
- 前記部分の前記少なくとも1つの特徴は送信されたビットの数であることを特徴とする、請求項7に記載の方法。
- 要求を送信する前記ステップはRSTPプロトコルのPLAYコマンドを使用することを特徴とする、請求項1から8のいずれか1項に記載の方法。
- 前記サーバと前記レシーバとの間の帯域幅を特定する前記ステップはRSTPプロトコルのPLAYコマンドに対する前記サーバの応答を使用することを特徴とする、請求項1から9のいずれか1項に記載の方法。
- サーバによって拡散されたオーディオビジュアル・プログラムを受信する装置であって、前記オーディオビジュアル・プログラムは前記サーバ上で少なくとも2つのバージョンで入手可能であり、前記バージョンの各々が、前記オーディオビジュアル・プログラムの画像解像度に対応しており、かつ、連続する複数の部分を有しており、前記バージョンは、各々、イントラ画像から始まっており、前記装置は、
前記サーバによって第1のビットレートで拡散された前記バージョンのうちの第1のバージョンの前記オーディオビジュアル・プログラムの第1の部分を、送信プロトコルに従って受信する手段と、
前記サーバによって前記第1のビットレートで拡散された前記オーディオビジュアル・プログラムの前記第1の部分の受信後に帯域幅を特定する手段と、
制御プロトコルに従って、前記サーバに要求を送信する手段であって、前記制御プロトコルは、コマンドの使用によってコンテンツのリアルタイム送信を制御するようにされており、かつ、いくつかのデータ部分の中から送信されるべきデータ部分をファイル内で識別するようにされており、前記識別はインデックス付けによって実現されており、前記要求は、前記サーバと前記レシーバとの間の帯域幅の特定された値に従う、前記オーディオビジュアル・プログラムの前記バージョンのうちの1つでの前記オーディオビジュアル・プログラムの第2の部分の識別情報を含んでおり、前記識別情報は前記第2の部分の開始及び終了の時間マーカを含んでいる、該手段と、
を有していることを特徴とする、前記装置。 - 前記要求は送信速度パラメータを更に含んでいることを特徴とする、請求項11に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR1154334A FR2975555A1 (fr) | 2011-05-18 | 2011-05-18 | Methode d'adaptation dynamique du debit de reception et recepteur associe |
FR1154334 | 2011-05-18 | ||
PCT/EP2012/058187 WO2012156211A1 (en) | 2011-05-18 | 2012-05-04 | Method for dynamic adaptation of the reception bitrate and associated receiver |
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JP2014520422A true JP2014520422A (ja) | 2014-08-21 |
JP2014520422A5 JP2014520422A5 (ja) | 2015-05-21 |
JP6436772B2 JP6436772B2 (ja) | 2018-12-12 |
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JP2014510722A Active JP6436772B2 (ja) | 2011-05-18 | 2012-05-04 | 受信ビットレートの動的適応方法および関連する受信機 |
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US (1) | US10015225B2 (ja) |
EP (1) | EP2710778B1 (ja) |
JP (1) | JP6436772B2 (ja) |
KR (1) | KR102012528B1 (ja) |
CN (1) | CN103548318B (ja) |
CA (1) | CA2835384A1 (ja) |
FR (1) | FR2975555A1 (ja) |
HK (1) | HK1194882A1 (ja) |
HU (1) | HUE026744T2 (ja) |
MX (1) | MX2013013373A (ja) |
MY (1) | MY168875A (ja) |
RU (1) | RU2598805C2 (ja) |
TW (1) | TWI573450B (ja) |
WO (1) | WO2012156211A1 (ja) |
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GB2519391B (en) * | 2014-04-02 | 2015-10-21 | Imagination Tech Ltd | Enhanced media quality management |
US9767101B2 (en) * | 2014-06-20 | 2017-09-19 | Google Inc. | Media store with a canonical layer for content |
EP3035628A1 (en) * | 2014-12-18 | 2016-06-22 | Alcatel Lucent | Method for analyzing a bitrate of user traffic of a data communication over a data communications line, and related devices |
KR102313485B1 (ko) | 2015-04-22 | 2021-10-15 | 삼성전자주식회사 | 가상현실 스트리밍 서비스를 위한 영상 데이터를 송수신하는 방법 및 장치 |
CN104934049B (zh) * | 2015-06-24 | 2018-03-16 | 深圳市九洲电器有限公司 | 一种变比特率mp3播放时间获取方法及系统 |
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MX2013013373A (es) | 2014-07-30 |
WO2012156211A1 (en) | 2012-11-22 |
EP2710778A1 (en) | 2014-03-26 |
KR102012528B1 (ko) | 2019-08-20 |
US10015225B2 (en) | 2018-07-03 |
MY168875A (en) | 2018-12-04 |
KR20140023983A (ko) | 2014-02-27 |
FR2975555A1 (fr) | 2012-11-23 |
EP2710778B1 (en) | 2016-01-06 |
JP6436772B2 (ja) | 2018-12-12 |
CN103548318A (zh) | 2014-01-29 |
RU2013156038A (ru) | 2015-06-27 |
TW201249185A (en) | 2012-12-01 |
US20140189142A1 (en) | 2014-07-03 |
CA2835384A1 (en) | 2012-11-22 |
HUE026744T2 (en) | 2016-07-28 |
TWI573450B (zh) | 2017-03-01 |
CN103548318B (zh) | 2019-01-08 |
RU2598805C2 (ru) | 2016-09-27 |
HK1194882A1 (zh) | 2014-10-24 |
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