Tekinoroji Yakanakisisa Yekudzvanya Vhidhiyo yeCCTV Systems
Munguva yazvino, kuchengetedzeka chinhu chakakosha muhupenyu hwezuva nezuva. Imwe yenzira dzinoshanda dzekuchengetedza kuchengetedzeka ndeyekushandisa Closed-Circuit Television (CCTV). Sezvo tekinoroji ichifambira mberi, masisitimu eCCTV akafambirawo mberi zvakanyanya, imwe yacho iri tekinoroji yekudzvanya mavhidhiyo. Kudzvanya mavhidhiyo inzira yekuderedza saizi yemafaira evhidhiyo pasina kuderedza zvakanyanya kunaka kwemufananidzo. Izvi zvinobvumira masisitimu eCCTV kuchengetedza mavhidhiyo akawanda panzvimbo shoma yekuchengetera uye zvinoita kuti kutumira mavhidhiyo kuve nyore kuburikidza nema network. Chinyorwa chino chichaongorora mamwe matekinoroji akanakisa ekudzvanya mavhidhiyo anoshandiswa mumasisitimu eCCTV, akadai seH.264, H.265 (HEVC), uye AV1.
H.264 (Kukodha Mavhidhiyo Epamusoro)
H.264, inozivikanwawo seAdvanced Video Coding (AVC), ndeimwe yemitemo yekudzvanya mavhidhiyo inozivikanwa uye inoshandiswa zvakanyanya muindasitiri yeCCTV. Yakaunzwa neITU-T Video Coding Experts Group (VCEG) uye ISO/IEC Moving Picture Experts Group (MPEG), H.264 inopa chiyero chakanaka pakati pemhando yevhidhiyo uye kushanda zvakanaka kwekudzvanya.
Mabhenefiti eH.264
1. Hunhu Hwepamusoro hweVhidhiyo: H.264 inokwanisa kugadzira vhidhiyo yemhando yepamusoro ine mabhiti akaderera kupfuura zvaimboitwa kare zvakaita seMPEG-2 kana MJPEG.
2. Kushanda Nesimba Mukuchengetedza: Nekushandisa nzira dzepamusoro dzekudzvanya dzakadai sekufanotaura kwenzvimbo nenguva, H.264 inogona kuderedza zvakanyanya saizi yemafaira evhidhiyo pasina kukanganisa kunaka kwemufananidzo. Izvi zvakakosha zvikuru kune masisitimu eCCTV anoda kuchengetwa kwenguva refu.
3. Kuwanikwa Kwakawanda: Sezvo yagara iripo kwemakore anopfuura gumi, H.264 inotsigirwa nemidziyo yakawanda nesoftware zviripo parizvino. Izvi zvinoita kuti ishande zvakanaka neCCTV system dzakasiyana-siyana.
4. Kuchengetedza bandwidth: Tekinoroji yekudzvanya yeH.264 inobatsira mukuderedza zvinodiwa zvebandwidth pakutumira vhidhiyo, zvichiita kuti vhidhiyo itumirwe yemhando yepamusoro kuburikidza nemanetwork anononoka kana asina kugadzikana.
H.264 Zvakashata
1. Kuomarara kweKunyora Makodhi: Maitiro ekunyora makodhi eH.264 akaomarara uye anoda simba rekushandisa makombiyuta akawanda kupfuura matekinoroji ekare ekudzvanya.
2. Rezinesi: Kunyangwe zvichishanda zvakanaka, kushandiswa kweH.264 kunoda rezinesi izvo zvinogona kuwedzera mari yekushanda kwemasangano akati wandei.
H.265 (Kushanda Kwepamusoro Kwevhidhiyo Coding)
H.265, kana kuti High Efficiency Video Coding (HEVC), ndiyo inotsiva H.264. Yakaunzwa kugadzirisa zvipingamupinyi zveH.264, HEVC inopa compression inoshanda zviri nani, zvichikonzera vhidhiyo yemhando yepamusoro ine saizi diki dzemafaira.
Mabhenefiti eH.265
1. Kushanda Nesimba Kwakanyanya: H.265 inogona kuderedza saizi yemafaira evhidhiyo kusvika ku50% zvichienzaniswa neH.264 uku ichichengetedza mhando yemavhidhiyo yakafanana. Izvi zvinobatsira zvikuru pakuchengetedza nzvimbo yekuchengetera uye bandwidth yenetwork.
2. Hunhu Hwepamusoro hweVhidhiyo: Nekushandisa matekiniki epamusoro ekudzvanya akadai se quad-tree partitioning, HEVC inokwanisa kuchengetedza ruzivo rwemifananidzo rwuri nani kunyanya pahukuru hwakakura senge 4K ne8K.
3. Kuchinjika: HEVC inotsigira akasiyana-siyana mavhidhiyo, kubva kunharembozha kusvika kumascreen makuru, zvichiita kuti ikwanise kuchinjika zvinoenderana nezvakawanda zvinodiwa.
H.265 Zvakashata
1. Tekinoroji Itsva: Kunyangwe ichishanda zviri nani, HEVC ichiri itsva saka kuenderana nehardware yekare nesoftware kunogona kuve dambudziko.
2. Magetsi neMagetsi eKombiyuta: Maitiro ekunyora H.265 akaomarara uye anoda simba rekombiyuta rakawanda nemagetsi, izvo zvinogona kuva chipingamupinyi kune masisitimu eCCTV anofanira kushanda maawa makumi maviri nemana pazuva, mazuva manomwe pasvondo.
3. Mari dzeMarezinesi: Kufanana neH.264, HEVC inodawo mari dzemarezinesi dzinogona kukanganisa kugamuchirwa kwemasangano madiki kana epakati.
AV1 (AOMedia Vhidhiyo 1)
AV1 tekinoroji yekudzvanya mavhidhiyo yakagadzirwa neAlliance for Open Media (AOMedia). Senzira yekudzvanya yakavhurika uye isina mari yemutero, AV1 yakagadzirirwa kupa mashandiro ari nani ekudzvanya kupfuura H.265, ukuwo ichibvisa mari yekupa marezenisi.
Zvakanakira zveAV1
1. Kushanda Nesimba Mukudhinda: Sekureva kwezvimwe zvidzidzo, AV1 inogona kudzvanya mavhidhiyo kusvika pa30% zviri nani kupfuura H.265, zvinoreva kuti nzvimbo yakawanda yekuchengetera inogona kuchengetedzwa.
2. Hapana Mari yekutenga: Chimwe chezvakanakira zveAV1 ndechekuti haina mari yekutenga. Izvi zvinoderedza mari yekupa marezenisi, izvo zvinogona kubatsira makambani mazhinji.
3. Hunhu Hwepamusoro hweVhidhiyo: AV1 inoshandisa nzira dzakasiyana-siyana dzekudzvanya dzinokwanisa kuchengetedza hunhu hwevhidhiyo hwepamusoro kunyangwe paine bitrate yakaderera.
4. Rutsigiro rweMaindasitiri: AV1 inotsigirwa nemakambani makuru akaita seGoogle, Netflix, neMicrosoft, zvichiita kuti ive chiyero chinovimbwa zvikuru uye chinogamuchirwa nekukurumidza mukati meindasitiri.
Zvakashata zveAV1
1. Kuomarara kweEncoding uye Decoding: Tekinoroji yeAV1 inoda simba repamusoro rekushandisa komputa kupfuura H.264 neH.265. Izvi zvinogona kukanganisa mashandiro uye kushandiswa kwesimba kweCCTV hardware.
2. Kushaikwa kwerutsigiro rweHardware: Kunyange hazvo makambani mazhinji makuru achitsigira AV1, rutsigiro rwehardware rweAV1 decoding ruchiri rudiki uye haruna kukwana seH.264 neH.265.
Mhedziso
Tekinoroji yekudzvanya mavhidhiyo ine basa rakakosha mumaCCTV system emazuva ano. H.264, kunyangwe iri yekare, ichiri kushanda zvakanyanya uye inoshanda zvakanaka kune akawanda maapplication. H.265 inosimudzira mashandiro ekudzvanya, asi nekuoma kwakawanda uye mari yekupa marezenisi. AV1, mutambi mutsva, inopa mashandiro ekudzvanya akanaka uye haina mari yemutero, kunyangwe rutsigiro rwehardware ruchiri kukura.
Pakusarudza tekinoroji yakanakisa yekudzvanya vhidhiyo yeCCTV system yako, zvakakosha kufunga nezvezvinodiwa zvakaita senzvimbo yekuchengetera, mhando yevhidhiyo yaunoda, kuenderana kwemudziyo, uye mutengo. Nekunzwisisa zvakanakira nekuipira kwetekinoroji yega yega, unogona kuita sarudzo ine ruzivo rwakanyanya yekuvandudza kuchengetedzeka uye kushanda zvakanaka kweCCTV system yako.
