Izifaki khodi ze-SDI

Izifaki khodi ze-SDI (Serial Digital Interface) zisetshenziselwa ukuguqula amasiginali wevidiyo ye-analogi abe idatha yedijithali ukuze idluliselwe kunethiwekhi yedijithali. Isishumeki se-SDI sithatha imithombo yevidiyo ye-analog, njengevidiyo eyinhlanganisela noma ividiyo yengxenye, futhi siyiguqulele kudatha yedijithali ebese ithunyelwa ngenethiwekhi. Isifaki khodi siphinde sinikeze umbhalo wekhodi kanye nokwahlukanisa amasiginali omsindo, okuvumela ukuvumelanisa kwevidiyo nokusakazwa komsindo. Ingase futhi isetshenziselwe ukucindezela ividiyo nokusakazwa komsindo, okuvumela ukudluliselwa ngamanethiwekhi anomkhawulokudonsa olinganiselwe. Isifaki khodi se-SDI ngokuvamile sisetshenziswa ezinhlelweni zokusebenza ezichwepheshile nezokusakaza, ezifana nethelevishini yekhebula nezinhlelo zikamabonakude zesathelayithi, ukuletha okuqukethwe kwevidiyo nomsindo kubabukeli.

I-FMUSER DTV4335V 4/8/12 Iziteshi ze-SDI IPTV Encoder

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Sisetshenziselwa ini isifaki khodi se-SDI?: Izinhlelo zokusebenza eziyinhloko zezishumeki ze-SDI zifaka ukubhekwa kwevidiyo, izithombe zezokwelapha, ukusakaza umabonakude, nokusakaza ividiyo. Ekugadweni kwevidiyo, izifaki khodi ze-SDI zingasetshenziswa ukuminyanisa kanye nekhodi yokuphakelayo kwevidiyo yedijithali kusuka kumakhamera agadayo ukuze kudluliselwe futhi kugcinwe. Emfanekisweni wezokwelapha, izifaki khodi ze-SDI zingasetshenziswa ukufaka ikhodi yezithombe zokucaca okuphezulu ezivela emshinini we-ultrasound kanye ne-MRI ukuze zidluliselwe futhi zigcinwe. Kumabonakude osakazwayo, izifaki khodi ze-SDI zingasetshenziswa ukucindezela amasiginali wevidiyo yedijithali ukuze adlulise futhi asatshalaliswe. Ekusakazweni kwevidiyo, izifaki khodi ze-SDI zingasetshenziswa ukucindezela ukusakazwa kwevidiyo yedijithali ukuze idluliselwe ku-inthanethi. Kuzo zonke izinhlelo zokusebenza, izifaki khodi ze-SDI zisebenza ngokusebenzisa ama-algorithms ukuze iminyanise amasiginali wevidiyo yedijithali futhi iwafake ekusakazweni kwedijithali okungadluliswa ngenethiwekhi noma agcinwe kufayela.

Yiziphi izinzuzo zezifaki khodi ze-SDI?: Izinzuzo zezifaki khodi ze-SDI ngaphezu kwezinye izinhlobo zezifaki khodi zehadiwe zifaka:
-Okukhipha ividiyo yekhwalithi ephezulu: Izifaki khodi ze-SDI zinikeza ikhwalithi yevidiyo ephakeme kakhulu uma iqhathaniswa nezinye izifaki khodi.
-Amafomethi wevidiyo aguquguqukayo: Izifaki khodi ze-SDI zingakhipha amafomethi wevidiyo ahlukahlukene, njenge-HD-SDI, 3G-SDI, ne-6G-SDI.
Ukubambezeleka okuphansi: Izifaki khodi ze-SDI zingafaka ikhodi futhi ziqophe ividiyo nge-latency ephansi kakhulu.
-Umbhalo wekhodi we-bitrate ephezulu: Izifaki khodi ze-SDI zingafaka ikhodi yevidiyo nge-bitrate ephezulu kunamanye ama-encoder.
-Okukhipha umsindo okuguquguqukayo: Izifaki khodi ze-SDI zingakhipha umsindo ngamafomethi amaningi, njenge-PCM, i-MPEG-2, ne-AAC.
-Scalability: Izifaki khodi ze-SDI zingakhuliswa phezulu noma phansi ukuze kuhlangatshezwane nezinqumo ezihlukene namazinga ozimele.
-Ukusebenza kahle kwezindleko: Izifaki khodi ze-SDI zibiza kakhulu kunezinye izishumeki zehadiwe.

Isifaki khodi se-HDMI Vs. Izifaki khodi ze-SDI: Umehluko Oyinhloko: Umehluko omkhulu phakathi kwesishumeki se-SDI nesishumeki se-HDMI wuhlobo lwesixhumi esibonakalayo abasisebenzisayo. Izifaki khodi ze-SDI zisebenzisa i-serial digital interface (SDI), kuyilapho izifaki khodi ze-HDMI zisebenzisa i-High-Definition Multimedia Interface (HDMI).

Lapho ukhetha phakathi kwakho kokubili, kunezici eziningana okufanele zicatshangelwe.

- Ukulungiswa: Izifaki khodi ze-HDMI zingasekela okokufaka kokucaca okuphezulu kunezishumeki ze-SDI, kufika ku-4K.

- Izindleko: Izifaki khodi ze-HDMI ngokuvamile zibiza kakhulu kunezishumeki ze-SDI.

- Ukuhambisana: Izifaki khodi ze-SDI zihambisana nohlu olubanzi lwamadivayisi, kuyilapho izifaki khodi ze-HDMI ngokuvamile zihambisana kuphela namadivayisi ahambisana ne-HDMI.

- Umkhawulokudonsa: Izifaki khodi ze-HDMI ngokuvamile ziba nomkhawulokudonsa ophezulu kunezishumeki ze-SDI, okuvumela ukudluliswa kwedatha ngokushesha.

- Ikhwalithi: Izifaki khodi ze-HDMI ngokuvamile zikhiqiza izithombe zekhwalithi ephezulu kunezishumeki ze-SDI.

- Ukuhambisana Namadivayisi Amaningi: Izifaki khodi ze-HDMI zivame ukusebenzisana namadivayisi amaningi, kuyilapho izifaki khodi ze-SDI zikhawulelwe kudivayisi eyodwa.

- Umsindo: Izifaki khodi ze-HDMI zingasekela umsindo oshumekiwe, kuyilapho izifaki khodi ze-SDI zidinga umthombo womsindo wangaphandle.

Ekugcineni, kukuwe ukuthi unqume ukuthi iyiphi efanelana nezidingo zakho.

Kungani kudingeka isifaki khodi se-SDI?: Izifaki khodi ze-SDI zibalulekile ngoba zivumela amasiginali wevidiyo ukuthi adluliselwe amabanga amade ngaphandle kokuthi isiginali ihlanekezelwe noma ilahlekelwe yikhwalithi. Izifaki khodi ze-SDI futhi zinikeza ukuvikeleka okuthuthukisiwe nokwethembeka, okuzenza zilungele ukusakaza nokusakaza ividiyo.

Kusho ukuthini ubuningi besiteshi (isb. 4 noma 8-channel) kusishumeki se-SDI?: Iziteshi zesifaki khodi se-SDI zibhekisela enanini lamavidiyo asakazwayo engakusingatha. Isishumeki se-SDI esineziteshi ezi-4 singacubungula ukusakazwa kwamavidiyo angu-4, kuyilapho isishumeki seziteshi ezingu-8 singacubungula ukusakazwa kwamavidiyo angu-8. Lapho unquma ukuthi yiluphi uhlobo lwesishumeki ozosisebenzisa, kufanele ucabangele inombolo yokusakazwa kwamavidiyo okudingeka ukucubungule kanye nobunzima benqubo yombhalo wekhodi.

Yiziphi izinhlobo ezahlukene zezishumeki ze-SDI?: Kunezinhlobo ezintathu ze-SDI encoder: SD/HD encoder, HD encoder kanye 4K encoder. Isishumeki se-SD/HD sisekela izinqumo ezifika ku-1080p futhi singasetshenziselwa kuphela i-SD nevidiyo ye-HD. Isifaki khodi se-HD sisekela izinqumo ezifika ku-1080p futhi singasetshenziselwa i-HD nevidiyo ye-4K. Isishumeki se-4K sisekela izinqumo ezifika ku-4K futhi singasetshenziselwa ividiyo ye-4K.

Ungawakhetha kanjani amakhodi we-SDI angcono kakhulu?: Okulandelayo amaphuzu abalulekile ambalwa okufanele uwacabangele lapho ukhetha isifaki khodi se-SDI kuhlelo lokusebenza ngalunye:

1. Ifomethi yevidiyo: Qiniseka ukuthi isifaki khodi sisekela ifomethi yevidiyo oyidingayo. Lokhu kungafaka i-HD, i-4K, i-8K, nezinhlobonhlobo zezinye izinqumo.

2. I-Bitrate: Khetha isifaki khodi esikwazi ukukunikeza i-bitrate oyidingayo. Lokhu kuzoncika kuhlelo lokusebenza kanye nekhwalithi yevidiyo ofisa ukuyizuza.

3. Ukuxhumana: Qiniseka ukuthi isifaki khodi sinezinketho zokuxhumana ozidingayo. Lokhu kufaka i-SDI, i-HDMI, i-IP, nokuningi.

4. Izinga lozimele: Qinisekisa ukuthi isifaki khodi sisekela izinga lozimele olidingayo.

5. Usekelo Lomsindo: Qiniseka ukuthi isishumeki sisekela amafomethi omsindo owadingayo.

6. Intengo: Cabangela izindleko zesifaki khodi nokuthi ingabe singaphakathi kwesabelomali sakho.

7. Ukuhambisana: Qinisekisa ukuthi isifaki khodi sihambisana nezinye izisetshenziswa ongase udinge ukuzisebenzisa.

8. Isixhumi esibonakalayo somsebenzisi: Cabangela isixhumi esibonakalayo somsebenzisi nokuthi ingabe sinembile futhi kulula ukusisebenzisa.

9. Ukuthembeka: Qiniseka ukuthi isifaki khodi sithembekile ukuze uqinisekise ikhwalithi engaguquki.

10. Usekelo: Qiniseka ukuthi kunosekelo olwanele lwekhasimende lwesishumeki uma udinga usizo.; Kufanele futhi ulandele:; 1. Cwaninga izishumeki ze-SDI ezahlukahlukene ezitholakalayo futhi uqhathanise izici zazo namandla.
2. Cabangela ukuthi isifaki khodi ngasinye sifanelana kanjani nezidingo zakho zephrojekthi ethile.
3. Cabangela ububanzi bentengo yezishumeki bese unquma ukuthi iyiphi engaphakathi kwesabelomali sakho.
4. Thola ukuhambisana kwesifaki khodi nesisetshenziswa sakho esikhona.
5. Funda izibuyekezo futhi uthole impendulo evela kwabanye abasebenzisi abasebenzise isishumeki.
6. Xhumana nomkhiqizi noma umphakeli ukuze uthole ulwazi olwengeziwe.
7. Khetha okokugcina bese ufaka i-oda.

Yiziphi izicaciso eziyinhloko zesifaki khodi se-SDI okufanele uzinakekele?: Ukucaciswa okubaluleke kakhulu kwesifaki khodi se-SDI abathengi abasikhathalelayo kuhlanganisa umkhawulokudonsa wesiginali, ukulungiswa kwevidiyo, amafomethi ombhalo wekhodi (isb. MPEG-2, MPEG-4, H.264), ukujula kombala, izinga lozimele, umbhalo wekhodi womsindo, ukubambezeleka, namandla okucubungula. . Okunye ukucaciswa okubalulekile kufaka phakathi izimbobo zokufaka/zokukhiphayo, ukusebenzisana namanye amadivayisi, izidingo zamandla, izindleko, nosayizi/isisindo.

Yiziphi izinhlobo zamaphrothokholi ezikhona zokufaka ikhodi kwe-SDI?: Kunezinhlobo ezine zamaphrothokholi zesishumeki se-SDI: H.264, H.265, JPEG, ne-MPEG-2. Ukukhetha phakathi kwamaphrothokholi ahlukene kuncike ezidingweni ezithile zomsebenzisi. I-H.264 iyiphrothokholi entsha enikezela ngevidiyo nomsindo wekhwalithi ephezulu kunezinye izimiso, kodwa idinga umkhawulokudonsa kanye namandla okucubungula. I-H.265 inikeza ividiyo yekhwalithi efanayo nomsindo, kodwa ngomkhawulokudonsa omncane namandla okucubungula. I-JPEG iyisinqumo esihle sezinhlelo zokusebenza ze-low-latency, kuyilapho i-MPEG-2 iyindlela ekhethwayo yokusakaza ividiyo yekhwalithi ephezulu.

Yiziphi izinhlobo zezinqumo ezikhona zezifaki khodi ze-SDI?: Kunezinhlobo ezintathu zokulungiswa kwezishumeki ze-SDI: HD-SDI, 3G-SDI, kanye ne-6G-SDI. Uhlobo lokulungiswa olukhethayo luncike ekulungisweni kwevidiyo odinga ukuyibhala ngekhodi. I-HD-SDI ihamba phambili ngezinqumo ezifika ku-1080p, i-3G-SDI ingcono kakhulu ekulungisweni okufika ku-4K, futhi i-6G-SDI ingcono kakhulu ku-8K nokucaca okuphezulu.

Ungakhetha kanjani phakathi kwesifaki khodi se-H.265 SDI nesishumeki se-H.264 SDI futhi ngani?: Umehluko omkhulu phakathi kwezishumeki ze-H.265 ne-H.264 SDI izinga lokuminyanisa ezikunikezayo. I-H.265 inikeza ukucindezela okuphezulu kune-H.264, okuvumela idatha eyengeziwe ukuthi igcinwe endaweni efanayo. Lokhu kwenza i-H.265 ilungele ukusakaza ividiyo enesinqumo esiphezulu ngamanethiwekhi omkhawulokudonsa olinganiselwe. Nokho, i-H.264 isasetshenziswa kabanzi futhi inikeza ibhalansi enhle phakathi kwekhwalithi nokucindezelwa.

Uma ukhetha phakathi kwezishumeki ze-H.265 ne-H.264 SDI, cabangela ukulungiswa kwevidiyo oyisakazayo kanye nomkhawulokudonsa otholakalayo. Uma usakaza ividiyo enesinqumo esiphezulu ngenethiwekhi yomkhawulokudonsa olinganiselwe, khona-ke i-H.265 iyisinqumo esingcono. Nokho, uma usakaza ividiyo enesinqumo esiphansi, i-H.264 ingase ibe inketho engcono.

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