Kurekodha Mavhidhiyo Ane Mwero Wepamusoro Pamakamera Edhijitari
Kugadzirwa kwemakamera edhijitari mumakore gumi apfuura kwakachinja maitiro evanhu ekurekodha nekunakidzwa nekufamba kwemifananidzo. Kunyange zvazvo mavhidhiyo aimbove akafanana nemafuremu makumi maviri nemana kana makumi matatu pasekondi (fps), ikozvino makamera akawanda—kubva kumakamera asina magirazi nemaDSLR kusvika kumakamera efoni—anogona kurekodha pamazinga epamusoro akadai se60 fps, 120 fps, 240 fps, uye zvakatokwira. Iyi tekinoroji inozivikanwa sehigh frame rate (HFR) uye inoshandiswa zvakanyanya kugadzira kufamba kwakapfava, kuwedzera ruzivo rwekuona, uye kuvhura mikana yekugadzira mavhidhiyo anononoka kufamba. Chinyorwa chino chinotaura nezvepfungwa, mabhenefiti, zvinodiwa zvehunyanzvi, uye matambudziko ekurekodha vhidhiyo yeHFR pamakamera edhijitari.
Chii chinonzi High Frame Rate?
Mwero wefuremu inhamba yemifananidzo isina kusimba (mafuremu) inorekodhwa nekamera musekondi imwe chete. Vhidhiyo chaizvoizvo inyaya yemafuremu anotambwa nekukurumidza, zvichiita kuti chitarisiko chekufamba chionekwe. Muyero webhaisikopo unowanzova 24 fps nekuti unopa "chitarisiko chefirimu" chakasiyana. Panguva imwe chete, terevhizheni yechinyakare inowanzoshandisa 25 fps (PAL) kana 30 fps (NTSC).
Kumhanya kwefuremu kwakakwira kunoreva kurekodha pahuwandu hwakawanda hwemafuremu pasekondi pane zvakajairwa, zvinowanzo tangira pa50/60 fps zvichikwira. Kumhanya kwefuremu kwakakwira, ruzivo rwakawanda rwekufamba runotorwa. Izvi zvinoita kuti kufamba kuite sekunonaka kana kuchiridzwa padanho rimwe chete refuremu, kana kuti kunogona kunonotswa pasina kuzununguka kana kuchiridzwa padanho refuremu.
Mabhenefiti Akakosha eHFR Recording
1. Kufamba Kwakatsetseka
Kurekodha 60 fps kunowanzo shandiswa kutora chiito chinokurumidza, senge mitambo, kutamba, kana zviitiko zvine mafambiro madiki. Mhedzisiro yacho inoita kunge yakapfava kupfuura 24/30 fps, kunyanya kana kamera ikavhara kana kana zvinhu zvikafamba nekukurumidza pafuremu.
2. Kufamba Kwemhando Yepamusoro Kunonoka
Ichi ndicho chinhu chinonyanya kukwezva HFR. Nekurekodha pa120 fps wozoiridza zvakare pa30 fps, vhidhiyo inogona kudzikiswa kusvika 4x. Pa240 fps, kudzikira kunogona kusvika 8x (kana kubuda kuri 30 fps). Nekuti kune data rekufamba rakawanda riripo, kufamba kunonoka kunoita sekunge kwakatsetseka uye hakukanganisi.
3. Kuongorora Kufamba uye Zvinodiwa zveUnyanzvi
Kunze kwekushandisa mafirimu, HFR inobatsirawo pakuongorora mafambiro emitambo, kuyedza sainzi kuri nyore, kunyora mashandiro emakanika, uye kuteedzera mafambiro ezvinhu zvakaoma kuona nekumhanya kwakajairika. Varairidzi vemitambo vazhinji vanoshandisa vhidhiyo ye120/240 fps kupa zvigadziriso zvakadzama pahunyanzvi hwevatambi.
4. Kugadzirisa Kuchinjika
Mifananidzo yeHFR inopa mukana wekushandura zvinhu mushure mekugadzirwa. Vagadziri vanogona kusarudza kutamba zvakare nguva dzose kuti vataridzike zvakanaka, kana kuderedza kumhanya kwezvikamu zvechikamu pasina kukanganisa kunaka.
Hukama Huri Pakati Pekukwira Kwemafuremu, Kumhanya Kweshutter, uye Chiedza
Pakurekodha vhidhiyo, mwero wefuremu hausi wega. Une chekuita zvakananga nekumhanya kweshutter uye huwandu hwechiedza chinopinda mukamera.
Mutemo unowanzo shandiswa muvhidhiyo ndewekuti shutter inomira nemadhigirii 180: kumhanya kweshutter kunopetwa kaviri kupfuura kumhanya kwefuremu. Semuenzaniso:
– 24 fps → shutter inenge 1/48 (yakatenderedzwa kusvika 1/50)
– 60 fps → shutter inenge 1/120
– 120 fps → shutter inenge 1/240
Kana frame rate yakakwira, shutter speed yacho inokurumidza. Nekuda kweizvozvo, sensor inowana chiedza chidiki. Saka, kurekodha kweHFR kunowanzoda chiedza chakajeka kana maISO settings akakwira. Mumamiriro ekunze asina chiedza chakawanda, HFR inogona kugadzira mavhidhiyo akasviba kana ane ruzha kupfuura maframe rates akajairwa.
Kugadziriswa, Kuchekwa, uye Kuganhurirwa kweKamera
Haasi makamera ese anokwanisa kurekodha HFR neresolution yepamusoro. Kazhinji, sarudzo ye120 fps inowanikwa chete pa1080p, kwete 4K. Mamwe makamera anoshandisawo sensor crop kana HFR ichishanda, zvichikonzera angle yakamanikana yekuona.
Izvi zvinodaro nekuti kurekodha kweHFR kunoda kuti kamera iverenge sensor nekukurumidza uye igadzirise data rakawanda pasekondi. Kana resolution yakakwira, mutoro wacho unorema. Vagadziri vemakamera vanowanzo sarudza kuenzanisa pakati pehuwandu hwemafuremu, resolution, hunhu hwekudzvanywa, uye miganhu yekupisa zvakanyanya.
Makodheki, Mabhitaiti, uye Saizi dzeMafaira
Kurekodha kweHFR kunewo simba guru pahukuru hwemafaira. Vhidhiyo ye120 fps inogona kukura zvakapetwa kaviri kana kana kupfuura vhidhiyo ye30 fps, zvichienderana nebitrate uye codec.
Mamwe mazwi ekunzwisisa:
– Kodhi: mashandisirwo anoitwa vhidhiyo, semuenzaniso H.264 kana H.265/HEVC. H.265 inowanzo shanda zviri nani, asi inoda kugadziriswa pakombiyuta.
– Bitrate: huwandu hwedata pasekondi imwe chete hunoshandiswa kuchengetedza vhidhiyo. Bitrate yakakwira inowanzoita kuti mafaira ave akanaka, asi saizi dzawo dzakakura.
Muchokwadi, vhidhiyo yeHFR inorekodhwa zvakanaka pa bitrate yakakwana kudzivirira ruzivo kuti rusaparadzwe nekudzvanywa, sezvo kufamba nekukurumidza uye ma frame akawanda zvinogona kukurira codec.
Odhiyo muHFR Rekodha
Zvakakosha kuziva kuti makamera mazhinji anofamba zvishoma nezvishoma anorekodha pasina odhiyo kana kurekodha odhiyo shoma chete. Izvi zvinodaro nekuti kurekodha kweHFR kunowanzoitirwa kuti kunonoke, zvichiita kuti odhiyo isashande kana kuti ive isiri yemazuva ese. Kana uchida odhiyo, funga nezvekurekodha pa50/60 fps (iyo inowanzo sanganisira odhiyo), kana kushandisa mudziyo wakasiyana weodhiyo kuti uwiriranise.
Mwenje uye Kudzima
Dambudziko rinowanzoitika neHFR kupenya-penya kana uchipfura pasi pemamwe mamiriro emwenje, kunyanya mwenje we LED usingadhuri kana we fluorescent. Kupenya-penya kunoitika nekuda kwekusiyana kwemafrequency emagetsi (50 Hz kana 60 Hz) uye kushanda kwayo nekumhanya kwakanyanya kwe shutter.
Mhinduro dzinosanganisira:
- Gadzirisa kumhanya kweshutter kuita kukosha kunoenderana nefrequency yemagetsi yemuno (semuenzaniso 1/100, 1/50 yenzvimbo dze50 Hz).
– Shandisa mwenje usingabatidzi.
- Kuedza kutanga usati watora mifananidzo kwakakosha.
Zvinodiwa zveMidhiya Yekuchengetedza uye Mashandiro
HFR inoda kadhi rememori rinokurumidza, kunyanya pa4K 60 fps kana 1080p 240 fps ine bitrate yakakwira. Kana kadhi racho richinonoka zvakanyanya, kamera inogona kumira kurekodha, kuratidza yambiro, kana kudimbura nguva yacho.
Uyezve, kurekodha kweHFR kunogona kuwedzera kupisa kwekamera. Mamwe makamera ane muganho wenguva yekurekodha kudzivirira kupisa zvakanyanya. Ita shuwa kuti unonzwisisa miganhu yemudziyo wako, kunyanya kana uchirekodha kwenguva yakareba.
Maitiro Akanakisisa Ekushandisa HFR
Kuti kurekodha firimu repamusoro kushande zvakanaka kwete kungoti "yakakwira ndiyo iri nani", heano mamwe mazano akajairika:
1. Shandisa HFR kana paine chikonzero chinooneka, senge kukurumidza kuita chimwe chinhu kana kudiwa kwekufamba zvishoma nezvishoma. Pakubvunzurudzwa kana zviitiko zvisingachinji, 24/25/30 fps inowanzo shanda zviri nani.
2. Nyatsoteererai mwenje, sezvo kumhanya kwakanyanya kwe shutter kuchida chiedza chakawanda. Kana zvichidikanwa, wedzerai mwenje yakawanda kana kushandisa lenzi ine aperture yakakura.
3. Gadzirisa kamera, nekuti kudedera kudiki kuchaonekwa zvakanyanya kana vhidhiyo ikatambirwa zvakanaka kana kuti ikanonoka.
4. Ronga zvinobuda, kungave vhidhiyo ichatambwa nguva dzose pa60 fps kana kuti slow-motion pa30 fps. Izvi zvichakanganisa mashandiro ekugadzirisa.
5. Chengetedza kunaka kwekudzvanya, sarudza codec uye bitrate inotsigira mafambiro, kunyanya pazvinhu zvemitambo kana zvinokurumidza.
Penutup
Kurekodha mavhidhiyo ane frame rate yakakwira pamakamera edhijitari kunopa rusununguko rwakakura rwekugadzira—kubva pakufamba kwakapfava kusvika pakunonoka kwefirimu kunoratidza ruzivo rwakavanzika. Zvisinei, HFR inewo hunyanzvi hwekuchinjana: zvinodiwa zvechiedza chakakwira, saizi huru dzemafaira, zvinodiwa pamakadhi ekurangarira anokurumidza, uye matambudziko angangoitika sekudzikira uye kupisa zvakanyanya. Nekunzwisisa hukama huripo pakati peframe rate, shutter speed, resolution, uye bitrate, vashandisi vanogona kusarudza marongero akakodzera zvinodiwa zvavo zvekugadzira. Pakupedzisira, HFR inopfuura kungova fps yakakwira; chishandiso chekutaura nyaya uye kuratidza nguva nenzira dzisingagoneke neframe rate yakajairika.
