Ngā Tohutohu mō te Whakaiti i te Rokiroki Raraunga CCTV me te Kore e Whakangaromia te Kounga
He take nui ngā whakaritenga rokiroki mō ngā pūnaha CCTV, ahakoa i roto i ngā kāinga, i ngā tari, i ngā whare hokohoko, i ngā whare putunga, i ngā wāhi ahumahi rānei. Ka nui ake ngā kāmera, ka teitei ake te taumira, ā, ka roa ake te rokiroki o ngā rekoata, ka tere ake te whakakī o te puku mārō. Nō reira, ka piki ake ngā utu whakahaere, ā, ka iti ake te whai huatanga o te whakahaere rekoata. Ko te rongo pai, he maha ngā huarahi hei whakaiti i te whakamahinga rokiroki raraunga CCTV me te kore e whakaiti i te kounga o ngā ataata e hiahiatia ana mō te mōhio kanohi, te tautuhi pereti nama, ngā aituā nui rānei. Anei ētahi tohutohu whai hua ka taea e koe te whakamahi.
1. Whakamahia he Kōpeketanga Ataata Pai Ake (H.265/HEVC)
Ko tētahi o ngā huarahi tino whai hua hei whakaiti i ngā whakaritenga rokiroki ko te whiriwhiri i te kōteke kōpeketanga tika. Mena ka tautokohia e tō DVR/NVR me ngā kāmera te H.265 (HEVC), whakamahia taua tautuhinga hei utu mō te H.264. Ka taea e te H.265 te tuku i te kounga tirohanga rite tonu me ngā rahi kōnae iti ake—he maha ngā wā ka penapena i te 30–50%, i runga i ngā āhuatanga o te tirohanga (nekehanga teitei vs. pūmau, awatea vs. pō).
Ngā mea hei mōhio:
– Me whakarite kia tautoko te kāmera me te hopu oro (NVR/DVR) i te H.265, i te H.265+ rānei.
– Hototahi purei anō: tera pea ka uaua ki ngā taputapu tawhito te purei i te H.265.
– Mēnā e wātea ana, ka taea e te āhuatanga "Smart Codec" (H.265+, Smart H.264 rānei) te whakaiti i te tere oro i ngā wāhi tūmau.
2. Whakamahia ngā Tautuhinga Tere Moka: He iti ake te utu o te VBR i te CBR
He mea nui te tere o te moka hei whakatau i te rahi o te kōnae. E rua ngā momo noa:
– CBR (Te Auautanga Pūmau): te auautanga pumau, te rahi kōnae e taea te matapae, engari he maha ngā wā ka maumauria i ngā wāhanga tūmau.
– VBR (Te Auautanga Taurangi): ka whakarerekētia te auautanga ki te uauatanga o te ahua, he iti ake te utu, engari kāore e tino whakaitihia te kounga.
Mō te whai huatanga, tīpakohia te VBR ka whakatakoto i tētahi taumata kounga (te rohenga tere moka rānei). Mā te VBR, ka whakaitihia e te kāmera te tere moka ina kore he nui ngā huringa (hei tauira, he ara takoto kau) ka whakanuia ina he mahi (hei tauira, he tāngata e hikoi ana).
3. Whakatikatikahia te taumira ki ngā whakaritenga pūwāhi o te kāmera.
He maha ngā kaiwhakamahi e whakatakoto ana i ngā kāmera katoa ki te taumira teitei rawa, ahakoa kāore e hiahiatia ana ngā taipitopito mōrahi mō ngā pūwāhi katoa. He rautaki atamai ake ko te whakarerekē i te taumira kia rite ki te mahi:
– Te wāhi kaiutuutu, te tomokanga, te kēti rānei: he taumira teitei (hei tauira, 4MP/5MP/4K) mō ngā taipitopito o te kanohi/taonga.
– Ngā whare putunga nui, ngā wāhi waka tūmatanui rānei: Tērā pea he rawaka te 1080p, te 2MP rānei mēnā kāore e hiahiatia he taipitopito nui.
– Ngā ara raro o roto me te tawhiti tata: he rawaka te 2MP i te nuinga o te wā.
Ko te tikanga, ehara te kounga i te mea ko te taumira anake; he nui ake te rerekētanga o te anga me te arotahi tika i te whakanui ake i te taumira me te kore he mana whakahaere.
4. Whakatakotoria te Tere Anga ki te Rawaka (Kāore e hiahiatia kia 25/30 fps)
Mā te tere anga teitei (fps) ka maeneene ake te kiriata, engari ka nui ake hoki te rahi o ngā raraunga. Mō ngā hiahia haumarutanga maha, he rawaka te 15 fps, tae atu ki te 10 fps, inā koa mō ngā wāhi kāore e hiahia ana ki ngā taipitopito tere.
Ngā taunakitanga whai hua:
– Te tomokanga matua/keti waka: 15–20 fps.
– Ngā wāhi tūmatanui o roto: 10–15 fps.
– Ngā wāhi tino pūmau (whare putunga pō): 8–10 fps.
Mā te whakaheke tika i te fps, ka taea e koe te penapena i te nui o te rokiroki me te kore e "koretake" te rekoata.
5. Whakahohehia te Hopu-ā-Takahanga: Te Kite Nekehanga, te AI rānei
Ka taea e te aratau tuhi 24-hāora te tere pau i tō puku mārō, ahakoa i te nuinga o te wā kāore he kaupapa nui. Ko te otinga utu-pai ko te tuhi kaupapa:
– Te kite nekehanga: ka hopu te kāmera i te rekoata ina nekehia ana.
– Te kimi i te AI (tangata/waka): he tika ake nā te mea ka whakaiti i ngā whakaoho teka nā te atarangi, te ua, te neke rānei o ngā rau.
Hei whakarite kia kore te kounga e "ngaro" ina puta he huihuinga, whakamahia he huinga o:
– Rere iti mō te aroturuki, rere matua mō te tuhi i ngā kaupapa.
– Tāpirihia he rekoata o mua (hei tauira, 5–10 hēkona i mua i te huihuinga) me te rekoata o muri (20–60 hēkona i muri i te huihuinga) kia tuhia katoatia ai te huihuinga.
Mena kei te hiahia tonu koe ki te tuhi tonu, ko te kōwhiringa haumaru ake ko te "tere iti tonu + tere teitei o te takahanga", mena ka tautokona e te taputapu.
6. Whakamahia te Dual-Stream me te Substream me te whakaaro nui
He maha ngā kāmera IP e tautoko ana i te awa-rua:
– Rere matua: kounga teitei mō te hopu oro.
– Rere-ā-roto: kounga iti ake mō te tirohanga ora mamao (taupānga pūkoro) hei penapena i te whānui o te hononga.
Ko tētahi hapa noa ko te whakahohe i te hopu oro i runga i tētahi awa iti (kounga iti iho) te mātakitaki ora rānei i runga i te awa matua (ka taumaha te whatunga). Kia tino:
– Ka noho tonu ngā rekoata nui ki te awa matua.
– Ka whakamahia te Substream hei aroturuki, inā koa ka iti te ipurangi.
Mā tēnei, ka mau tonu te kounga o te tuhi, engari ka taea te whakaiti i te kawenga pūnaha me ngā whakaritenga rokiroki tāpiri pea.
7. Arotauhia ngā Tautuhinga I-Frame (GOP) i roto i te Huarahi Taurite
Mā te GOP (Rōpū Pikitia) e whakatau te auau o te waihanga i ngā anga matua (ngā anga-I). Ko te auau o ngā anga-I, ko te nui ake o te rahi o te kōnae, engari ko te pumau ake o te tukanga rapu me te pai ake o te kounga i te wā e tere ana te nekehanga.
Ngā tautuhinga haumarutanga e whakamahia whānuitia ana:
– Ko te wā mo te anga-I he tata ki te 1–2 hēkona (hei tauira, 15–30 anga i runga i te fps).
Ki te kore rawa e auau te tango whakaahua, ka iti ake te rahi o ngā kōnae, engari ka "pōkarekare" pea ngā rekoata i te wā e nekehia ana. Ki te nui rawa te tango whakaahua, ka pai ake te kounga engari ka nui ake te wāhi rokiroki. Kimihia he huarahi waenga e tutuki ai ngā hiahia o tō kāmera.
8. Whakapai ake i te Rama Pō hei Whakaiti i te "Haruru"
He maha ngā wā ka piki ake te tere o te moka i te kounga o te pō. Nā te haruru (ngā iraira) i roto i ngā whakaahua mārama iti tēnei, ka whakaarohia e te kaikōnae he "taipitopito", ka nui ake te rahi o ngā raraunga.
Ngā otinga me te kore e whakaiti i te kounga:
– Tāpirihia he rama rama LED kia kore ai te kāmera e mahi kaha rawa.
– Whakamahia he kāmera he pūoko pai ake (kite pō Whetu/Tae) mēnā e tika ana.
– Whakatakotoria ngā āhuatanga pēnei i te 3D DNR (Whakaitinga Haruru Mamati) kia tika: ki te teitei rawa ka "paru" te ahua, ki te iti rawa ka nui te haruru me te tere bitrate nui.
Mā te mārama pai, e rua ngā painga ka puta i te wā kotahi: te nui ake o ngā taipitopito o te hopunga me te iti ake o te rahi o te kōnae.
9. Whakatinanahia he Maramataka Tuhituhi Tuturu
Kāore e hiahiatia kia tuhia katoatia ngā wāhi katoa i ngā wā kua whakaritea. Hei tauira, he tari:
– Ngā hāora mahi: te hopu tonu i ngā kōrero, ngā kaupapa tairongo ake rānei.
– I waho o ngā hāora mahi: arotahi ki te kimi kaupapa (tangata/waka) me ngā whakamōhiotanga.
I te whare hokohoko:
– Te whakahaere: he nui pea ngā huihuinga hei whakamama i te wāhi rokiroki.
– Te pō: he kaha ake te kite i ngā takahanga me te roa ake o te tuhi-muri.
Mā te whakaritenga ka taea te whakaiti i te whakamahinga rokiroki me te kore e whakararu i te kounga ina puta he huihuinga nui.
10. Tātaihia te Pupuri me te Kaha mā te Whakamahere, Kaua e Whakatau Tata
He maha ngā take rokiroki ka puta mai i te korenga o ngā whāinga pupuri (hei tauira, me pupuri mō ngā rā 14, 30 rānei). Tuatahi, whakatauhia ō hiahia pupuri, kātahi ka whakarerekē kia rite ki ēnei:
– te maha o ngā kāmera,
– taumira me te fps,
– aratau tuhi (haere tonu, takahanga rānei),
– te tere moka me te kōteke,
– Te kaha o te kōpae mārō.
Mena e hiahiatia ana he arotakenga mō tō pakihi (hei tauira, i ia 30 rā pea), whakamahia ngā rautaki kōpeketanga me te tuhi i ngā huihuinga, whakamahere rānei ki te tāpiri i ngā HDD. Ko te mātāpono: ehara i te mea ko te penapena rokiroki te tikanga he whakarērea te haumarutanga, engari ko te arotau i ngā tuhi kia "pupuri tonu te mea nui, kaua te mea kāore i te nui e taumaha."
Te Katinga
Ehara i te mea kotahi te mahi hei whakaiti i te rokiroki raraunga CCTV me te kore e whakaiti i te kounga, engari he huinga o ngā tautuhinga tika: whakamahia te H.265, whakatakotoria te tere moka VBR, whakatikatikahia te taumira me te fps e hiahiatia ana, whakahohea te hopu oro e hangai ana ki ngā huihuinga (ina koa ko te AI), arotauhia te rama pō hei whakaiti i te haruru, me te whakatinana i tētahi kaupapa hopu oro pono. Mā ēnei mahi, ka taea e koe te pupuri i te kounga o ngā kiriata e hiahiatia ana mō ngā rangahau me te whakaiti i ngā utu o te puku mārō me te whakanui ake i te pupuri rokiroki.
Ki te hiahia koe, ka taea e au te āwhina i a koe ki te waihanga i ngā tūtohutanga tautuhinga motuhake ake i runga i: te maha o ngā kāmera, te taumira kāmera, te momo NVR/DVR, te ūnga pupuri (ngā rā), me ngā āhuatanga tauwāhi (roto/waho, kanapa/pōuri, pukumahi/tūmau).
