17.4.2011
Srovnání kvalit HD kanálů v platformách UPC Direct & Skylink
Tento test vznikl na zaklade hasterivosti uzivatelu ale i me osobni zvedavosti jak se veci maji...
Spousta uživatelů se zastává kvalit toho svého poskytovatele z hlediska vysilane kvality , rozhodl jsem se udělat test, kdy budou porovnávány datové toky obou platforem a to nejen u společně nabízených programů.
Náhodně pořízený záznam v délce několika minut, vypočítán bitrate z velikosti souboru & času. Záznam ve formátu TS.
Discovery HD, 5:10 min.
Skylink : 5,6Mbit (220MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 384kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 384.0 kbit/s ] Subtitle [No subtitles]
UPC : 11,7Mbit (456MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), High Profile, Level 4.1, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 384kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 384.0 kbit/s ] Subtitle [No subtitles]
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Skylink - Travel Channel HD, 5:00 min.
7,12Mbit (267MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
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CT HD, 5:00 min.
Skylink: 10,56Mbit (396MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz stereo 448kbps [Audio - Dolby Digital, 48.0 kHz, 2 chn, 448.0 kbit/s ] Subtitle [No subtitles]
UPC : 11,36 (426MB)
Video: MPEG4 Video (H264) 1440x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1440x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz stereo 448kbps [Audio - Dolby Digital, 48.0 kHz, 2 chn, 448.0 kbit/s ] Subtitle [No subtitles]
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HBO HD, 5:00 min.
Skylink : 3,7Mbit (235MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz stereo 384kbps [Audio - Dolby Digital, 48.0 kHz, 2 chn, 384.0 kbit/s ] Subtitle [No subtitles]
UPC : 7,9Mbit (504MB)
Video: MPEG4 Video (H264) 1440x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1440x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz stereo 384kbps [Audio - Dolby Digital, 48.0 kHz, 2 chn, 384.0 kbit/s ] Subtitle [No subtitles]
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History HD, 5:00 min.
Skylink : 5,25Mbit (197MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz stereo 256kbps [Audio - Dolby Digital, 48.0 kHz, 2 chn, 256.0 kbit/s ] Subtitle [No subtitles]
UPC : 11,8Mbit (443MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 256kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 256.0 kbit/s] Subtitle [No subtitles]
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UPC - ESPNA HD, 6:00 min.
11,95Mbit (538MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 256kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 256.0 kbit/s ] Subtitle [No subtitles]
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UPC - NGC HD, 8:00 min.
11,8Mbit (708MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), High Profile, Level 4.1, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 384kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 384.0 kbit/s ] Subtitle [No subtitles]
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UPC - NGC Wild HD, 6:00 min.
11,88Mbit (535MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 224kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 224.0 kbit/s ] Subtitle [No subtitles]
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Skylink - Eurosport HD, 5:00 min.
5,3Mbit (199MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
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Skylink - FilmBox HD, 5:00 min.
5,65Mbit (212MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 448kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 448.0 kbit/s ] Subtitle [No subtitles]
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NovaHD, 5:00 min.
Skylink : 6,82Mbit (256MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
UPC : 7,62Mbit (286MB)
Video: MPEG4 Video (H264) 1440x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1440x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
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NovaSport HD, 6:00 min.
Skylink : 7,37Mbit (332MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
UPC : 10,42Mbit (469MB)
Video: MPEG4 Video (H264) 1440x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1440x1080, 25.000 fps ]
Audio: MPEG Audio 48000Hz stereo 192kbps [Audio - MPEG1 - Layer 2, 48.0 kHz, 2 chn, 192.0 kbit/s ] Subtitle [No subtitles]
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Skylink - BravaHDTV, 5:00 min.
7,22Mbit (271MB)
Video: MPEG4 Video (H264) 1920x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1920x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 448kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 448.0 kbit/s] Subtitle [No subtitles]
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HBO HD Hun - 5:00 min.
7,78Mbit (292MB)
Video: MPEG4 Video (H264) 1440x1080 25.00fps [Video - AVC (H.264), Main Profile, Level 4.0, 1440x1080, 25.000 fps ]
Audio: Dolby AC3 48000Hz 6ch 384kbps [Audio - Dolby Digital, 48.0 kHz, 6 chn, 384.0 kbit/s ] Subtitle [No subtitles]
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V SW DVB Dream jsem nasel plugin - modul BitrateView, ktery v realnem case skenuje datovy tok jak celeho TP,tak tok vsech programu v nem. Nicemu ani nevadi,ze nedetekuje rozliseni vysilanych programu, hlavni je indikace realneho,max. a min toku programu. Zajimava je take indikace volne kapacity v TP. Cas k vypocitavani prumerneho toku byl vzdy 5 a vice minut.
Ceske UPC Direct UPC - Canal Digital 1 UPC - Canal Digital 2
Skylink HD TP1 Skylink HD TP2
Jak je videt, Skylink proste cpe do TP co se dá, UPC i pres nizsi rozliseni (a timpadem mensi datovou narocnost) ma bitrate v mnoha pripadech vyssi. Bohuzel pokulhava co do zvukoveho komfortu, u nekolika kanalu chybi AC3 zvukova stopa. Zaroven se ruzni nazory na orezany - mensi datovy tok Skylinku vuci kvalite obrazu...zaver necht si kazdy udela zcela sam.
Po zarazeni novych HDcek Skylinku udelam i u nich test datovych toku, osobne neverim, ze by se Skylink polepsil.
I kdyz jsou nektere hodnoty toku vysoke, stale jde jit jeste vys, kupr. jsem na Astra 19,2 v nejakem nemeckem paketu zahlednul 720p kvalitu, ktera s tokem nespadla pod 10M,prumer byl 15M. Do budoucna zkusim take otestovat.
18.4.2011
Porovnání toků na TP DigiTV,UPC,Skylink SD
DigiTV TP1 DigiTV TP2 UPC TP1
UPC TP2 Skylink TP1 Skylink TP2
Skylink TP3
PcWifi