Data: 2009-07-23 00:40:31 | |
Autor: adresss | |
standard dzwieku w dvb-t w PL | |
On Wed, 22 Jul 2009 10:50:19 +0200, adresss@poczta.pl wrote:
A jak to wyglada ta funkcjonalnosc w obecnie a powyzsze? TV z dvb-t mpeg-4/avc jest juz sporo w sklepach i co tak w nich naprawde jest? Jest ten E-AC3 czy go nie ma? Bo za chwile sie okaze, ze ktos kupic tv z dvb-t mpeg-4/avc.......ale nie bedzie mial dzwieku, bo nie ma w nim E-AC3??? Wiec bylaby to wielka kupa, czyz nie? -- ThinkXtra |
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Data: 2009-07-23 00:50:55 | |
Autor: Maciej 'AbrahaM' Piotrowski | |
standard dzwieku w dvb-t w PL | |
Uzytkownik wrote:
On Wed, 22 Jul 2009 10:50:19 +0200, adresss@poczta.pl wrote: wiekszosc (ale faktycznie nie wszystkie) tv z mpeg4/avc ma obsluge E-AC3. -- "Dwie rzeczy sa nieskonczone: wszechswiat i ludzka glupota. I nie jestem pewien, co do wszechswiata." - Albert Einstein. |
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Data: 2009-07-23 00:58:16 | |
Autor: adresss | |
standard dzwieku w dvb-t w PL | |
jakies czas temu czytalem, ze w Norwegii (i chyba tez w Nowej
Zelandii) dzwiek maja w AAC. A co z tym fantem? Z drugiej strony, to wg mnie powinno sie wysoko stawiac poprzeczke. Dobrze jest ze video bedzie w mpeg-4/avc a nie mpeg-2. Szkoda, ze nie bedzie to dvb-t2 (ale co zrobic). Podobnie z dzwiekiem. Lepiej, aby wymagac aby byl E-AC3 (i ew. inne nowoczesne kodeki) niz jakies starocie. Bo pozniej ktos by powiedzial. No tak mamy dvb-t mpeg-2 a moglismy miec z mpeg-4...i z dzwiekiem podobnie. Wybor jakiegos rozwiazania implikuje na bardzo wiele lat. No chyba, ze z dzwiekiem byloby tak, ze wkladasz mala plytke z dekoderem i masz....... -- ThinkXtra |
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Data: 2009-07-23 01:06:43 | |
Autor: adresss | |
standard dzwieku w dvb-t w PL | |
On Thu, 23 Jul 2009 00:58:16 +0200, adresss@poczta.pl wrote:
jakies czas temu czytalem, ze w Norwegii (i chyba tez w Nowej New Zealand DTT network launched The New Zealand DTT network successfully launched on the 2nd April 2008, on time and on budget, according to local reports. Three multiplexes, TVNZ, TVWorks and Kordia are in operation delivering a mixture of SD and HD free-to-air services, all coded in MPEG-4, H.264 AVC for vision and HE AAC MPEG-4 for audio. HE AAC MPEG-4 for audio -- -- -- -- -- -- -- -- -- -- -- -- -- -- TVNZ also uses DVB-SSU for remotely updating STB software as well as EBU-teletext and DVB-Subtitles MHEG-5 is used for the EPG, delivering a comprehensive 8-day schedule. HD DTTV STB’s also seem to be selling at a very high rate and in some areas at a higher rate than SD only boxes according to reports. Now that the Freeview DTT alternative is available and working so well, Sky Pay TV Satellite subscriptions may well take a hit. Main source: tv.co.nz Item added: 8th April 2008 -- ThinkXtra |
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Data: 2009-07-23 01:27:55 | |
Autor: adresss | |
standard dzwieku w dvb-t w PL | |
http://www.mythtv.co.nz/mythtv/?page_id=4
his guide attempts to provide an overview to receiving FTA digital TV transmissions in New Zealand. The New Zealand freeview FTA (free to air) service utilises two broadcast methods - DTH - Direct to Home satellite service via Optus D1 DTT - Digital terrestrial television via UHF If you want to try out DTT under Linux yourself I suggest you take a look at the following guide on DTT Debugging under Linux DTH Technical Details The DTH service utilises two half transponders on the Optus D1 satellite. Each half transponder is capable of providing upto 9 services.Setting Transponder 1 Transponder 2 Frequency 12456000 12483000 Polarity Horizontal Horizontal Symbol Rate 22500000 22500000 FEC 3/4 3/4 Inversion Auto Auto Transmission Encoding DVB-S Transmission Stream MPEG-2 TS Video Encoding MPEG-2 Audio Encoding MP2 Video Resolutions 4:3 576i, 16:9 576i DTT Technical Details The DTT services is transmitted via UHF, covering 75% of the New Zealand population. Initially 3 multiplexes will be in use capable of providing between 18 and 20 services.Multipex A Television New Zealand Multiplex B MediaWorks Multiplex C Kordia The current design allows for upto 2 additional multiplexes to be added at some point in the future. Unlike the DTH service they have decided to utilise H.264 AVC (MPEG-4) for the video encoding, and a combination of HE-AAC and AC-3 for the audio. There will be a mix of SD and HD services.Transmission Encoding DVB-T Transmission Stream MPEG-2 TS Video Encoding H.264 Audio Encoding HE-AAC, AC3 Video Resolutions 4:3 576i, 16:9 576i, 720p50, 1080i50 czyli jednym slowem, tuner z Nowej Zelandii nie spelnia naszych wymagan, no chyba ze wiecej niz wymagaja w NZ. -- ThinkXtra |