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Quyen Test Camera Bi Chan: Cach Cho Phep Truy Cap Camera Trong Trinh Duyet

Cap nhat lan cuoi: 2026-05-06. Nham vao khoanh khac trang test camera trinh duyet tai, vung xem truoc truc tiep toi hoac trong, va hoac mot yeu cau quyen dang o tren thanh dia chi ma ban da bo qua, hoac mot yeu cau da-bi-tu-choi da tu an. Dinh tuyen hanh dong test thuc te toi Test Camera Truc Tuyen (trong trinh duyet qua Web API MediaDevices.getUserMedia(); khong tai len, khong cai dat).

Dap an 30 giay. Hau het cac truong hop "test camera khong bat dau" la trang thai quyen, khong phai loi phan cung. Mo thanh dia chi, tim bieu tuong camera nho (Chrome, Edge), bieu tuong khien (Firefox), hoac khoa "Cai dat" (Safari). Nhap vao no, roi chon Cho phep cho quyen camera cua freetoolonline.com, va tai lai trang. Neu ban khong thay bieu tuong, yeu cau da duoc tra loi truoc do va trinh duyet nho; cach khac phuc giong nhau - tim quyen camera theo-trang va bat lai thanh Cho phep. Duong nhap chinh xac o duoi theo tung trinh duyet.

Tai sao xem truoc camera van toi: ba trang thai quyen duoc giai thich

Test camera phia trinh duyet yeu cau he dieu hanh cung cap khung video truc tiep qua Web API MediaDevices.getUserMedia(). Truoc khi trang co the ve mot khung duy nhat trong vung xem truoc, tac nhan nguoi dung (trinh duyet cua ban) tham khao kho quyen theo-nguon-goc va quyet dinh co ton trong yeu cau hay khong. Ba trang thai cuoi co the, moi cai tao ra ket qua khac nhau tren trang cho nguoi doc giu xem truoc toi:

  • Duoc phep. Yeu cau quyen hoac xuat hien mot lan va ban nhap Cho phep, hoac trinh duyet nho mot Cho phep truoc do tu trang nay va bo qua yeu cau hoan toan. Trong ca hai truong hop, vung xem truoc truc tiep ket xuat cac khung trong vong mot hoac hai giay sau khi trang hoan thanh ve ban dau.
  • Bi chan (tu choi). Ban da tra loi yeu cau voi Chan vao luc nao do - tren trang nay hoac tren trang khac tu cung nguon goc - va trinh duyet nho lua chon. Khong co yeu cau moi; trang yeu cau truy cap camera, trinh duyet am tham tu choi yeu cau, va xem truoc truc tiep van toi hoac hien thi thong bao "quyen bi tu choi". Mot bieu tuong camera-co-gach nho thuong nhin thay tren thanh dia chi.
  • Bo qua (chua quyet dinh). Yeu cau da xuat hien, nhung ban nhap noi khac, chuyen tab, hoac yeu cau cuon vao phan man hinh ban khong nhin. Trinh duyet giu yeu cau treo ma khong cam ket voi mot trong hai trang thai. Xem truoc truc tiep van toi, nhung khong nhu truong hop bi chan, trinh duyet van chua nho "khong" - lan tai trang tiep theo se hien thi lai yeu cau.

Biet ban dang o trang thai nao trong ba trang thai nay tiet kiem thoi gian. Neu bieu tuong nho xuat hien tren thanh dia chi, ban o truong hop (a) hoac (b); neu khong co bieu tuong va trang khong noi gi, ban o truong hop (c) va mot lan tai lai thuong khac phuc. Neu bieu tuong hien thi camera-co-gach, ban o truong hop (b) va cac buoc duoi chuyen quyen theo-trang tro lai Cho phep.

Chrome (desktop)

Chrome luu quyen camera theo nguon goc trong ho so nguoi dung. De cap hoac cap lai truy cap:

  1. Nhin vao tan cung ben trai cua thanh dia chi. Neu bieu tuong camera hien thi mot gach do qua no, nhap vao bieu tuong do.
  2. Trong popup nho, dat Camera thanh Cho phep (doi khi duoc dan nhan "Luon cho phep tren trang nay"). Dong popup.
  3. Tai lai trang (Ctrl/Cmd + R). Xem truoc truc tiep se kich hoat trong vong mot giay.

Neu ban khong thay bieu tuong camera, quyen co the da duoc dat thanh "Chan" va Chrome co the dang an bieu tuong khi khong co yeu cau gan day nao. Mo chrome://settings/content/camera truc tiep, cuon den danh sach Khong duoc phep su dung camera cua ban, tim https://freetoolonline.com, nhap bieu tuong thung rac ben canh de xoa quy tac, sau do tai lai trang test camera; Chrome se hien thi yeu cau quyen moi lan sau khi trang goi getUserMedia. Tren thiet bi duoc quan ly (chinh sach truong hoc hoac noi lam viec), truy cap camera co the bi chan theo chinh sach o cap he dieu hanh hoac bang dieu khien quan tri - trong truong hop do Chrome hien thi "Duoc quan ly boi to chuc cua ban" va toggle theo-trang bi xam.

Firefox (desktop)

Firefox hien thi quyen hoat dong duoi dang bieu tuong camera nho ben trai URL khi trang da yeu cau hoac duoc cap truy cap. Cac buoc:

  1. Nhap bieu tuong camera ben trai URL. Mot bang co nhan Quyen mo ra.
  2. Tim hang Su dung Camera. Neu no hien thi Bi chan Tam thoi, nhap x ben canh muc de xoa, sau do tai lai trang; Firefox se hoi lai. Neu hien thi Bi chan khong co x, lua chon da duoc lam vinh vien - mo about:preferences#privacy, cuon den Quyen → Camera → Cai dat, tim muc freetoolonline.com trong danh sach, thay doi thanh Cho phep hoac xoa no, sau do luu va tai lai.
  3. Khi yeu cau xuat hien lai, nhap Cho phep (va tuy chon danh dau Nho quyet dinh nay de Firefox khong hoi lai).

Firefox giu hai trang thai quyen camera rieng biet: Bi chan Tam thoi tam thoi ma xoa voi mot lan tai trang, va Bi chan vinh vien song sot qua cac lan tai lai cho den khi ban chinh sua duoi about:preferences#privacy → Quyen → Camera → Cai dat. Hau het doc gia den huong dan test camera nay gap trang thai tam thoi trong lan truy cap dau tien va cho rang webcam bi tat vinh vien; bieu tuong camera-co-gach nho cua Firefox trong thanh URL la chan doan phan biet hai trang thai truoc khi ban thay doi bat ky quy tac theo-trang nao.

Safari (macOS)

Safari rang buoc quyen camera voi cai dat theo-trang cho ho so Safari dang hoat dong, khong phai mot phien trang don le. De cho phep:

  1. Voi trang test camera mo, chon Safari → Cai dat cho freetoolonline.com tu thanh menu (hoac Safari → Cai dat → Trang web → Camera).
  2. Dat dropdown camera cho freetoolonline.com thanh Cho phep.
  3. Dong bang cai dat va tai lai trang (Cmd + R).

Neu "Cho phep" khong co trong dropdown, ban than macOS co the dang chan truy cap cua Safari vao camera o cap he dieu hanh - mo Cai dat He thong → Bao mat & Quyen rieng tu → Camera, dam bao Safari duoc bat, sau do quay lai Safari va thu lai. macOS hien thi yeu cau mot lan khi Safari lan dau tien co su dung camera tren bat ky trang nao; mot khi duoc phep, cac tuy chon Safari theo-trang tiep quan.

Edge (desktop)

Edge tuan theo mo hinh quyen Chromium voi cung luong UI nhu Chrome. Nhap bieu tuong camera o ben trai thanh dia chi, chon Cho phep, tai lai. Neu bieu tuong bi an, mo edge://settings/content/camera va xoa hoac thay doi quy tac theo-trang cho freetoolonline.com. Edge tren cac cai dat Windows duoc quan ly cung tuan thu Group Policy - neu toggle bi xam, quan tri vien IT da khoa cai dat theo chinh sach va ghi de theo-nguoi-dung khong the tu UI trinh duyet.

Quyen camera di dong - iOS Safari va Android Chrome

Camera di dong nam sau hai cua quyen tren dien thoai - mot thuoc ve trinh duyet (Camera theo-nguon-goc = Cho phep / Chan) va mot thu hai thuoc ve he dieu hanh o tren (Cai dat → Bao mat & Quyen rieng tu → Camera cho phep Safari hoac Chrome cham ong kinh ban dau). Xem truoc toi tren trang test camera sau khi ban nhan Cho phep trong yeu cau trinh duyet la dau hieu co dien rang toggle cap he dieu hanh la nguoi chan, khong phai quy tac theo-trang. iOS them nep gap thu ba: lua chon camera truoc vs sau ben trong trinh duyet duoc dieu chinh boi cung quyen Camera, nhung goi y facingMode cua trang co the dap vao mot ong kinh co LED rieng tu ban khong the thay, nen tai-lai-mot-lan-sau-khi-cho-phep la buoc xac minh duoc khuyen nghi.

iOS Safari. Mo Cai dat → Ung dung → Safari → Camera. Dat mac dinh cho "Camera" thanh Cho phep (hoac Hoi). Sau do, voi trang test camera mo, nhan nut aA nho trong thanh dia chi va chon Cai dat Trang web → Camera → Cho phep. Dong va mo lai tab. iOS cung yeu cau chinh Safari co quyen Camera trong Cai dat → Bao mat & Quyen rieng tu → Camera → Safari - tren thiet bi moi hoac sau khi dat lai quyen rieng tu cai nay co the bi tat.

Android Chrome. Nhan bieu tuong khoa hoac thong tin ben trai URL, sau do Quyen → Camera → Cho phep. Neu toggle thieu, mo Cai dat → Cai dat trang web → Camera, tim muc freetoolonline.com duoi "Bi chan", xoa no, sau do tai lai trang de Chrome hoi lai. He dieu hanh Android cung co lop rieng - Cai dat → Ung dung → Chrome → Quyen → Camera phai duoc dat thanh Chi cho phep khi su dung ung dung (mac dinh) de bat ky trang nao su dung camera.

Dat lai trang thai camera-bi-chan ket khi bieu tuong gach khong xoa

Chan doan dang tin cay nhat cho "toi lien tuc bi tu choi" la bieu tuong camera-co-gach nho tren thanh dia chi - no co nghia trinh duyet dang nho quyet dinh Chan truoc do doi voi nguon goc freetoolonline.com va am tham tu choi cac cuoc goi getUserMedia trong tuong lai ma khong hien thi yeu cau moi. Dong tab, tai lai trang, hoac tham chi thoat trinh duyet se khong xoa quyet dinh nay vi cac quy tac camera theo-trang duoc luu chong lai nguon goc, khong phai chong lai tab hay phien. Cach khac phuc la xoa muc theo-trang duoc ghi nho de lan truy cap tiep theo kich hoat yeu cau quyen hoan toan moi, sau do bieu tuong camera chuyen tro lai tron (duoc phep) va xem truoc truc tiep kich hoat ma khong can khoi dong lai trinh duyet. Moi trinh duyet may tinh de ban hien thi muc camera theo-trang o vi tri hoi khac:

  • Chrome / Edge: chrome://settings/content/camera hoac edge://settings/content/camera → xoa muc freetoolonline.com duoi "Khong duoc phep su dung camera cua ban".
  • Firefox: about:preferences#privacy → Quyen → Camera → Cai dat → xoa muc.
  • Safari (macOS): Safari → Cai dat → Trang web → Camera → chon muc va nhap Xoa.

Sau khi xoa, tai lai trang test camera; trinh duyet xu ly cuoc goi getUserMedia tiep theo nhu yeu cau lan dau va hien thi yeu cau moi. Day cung la tuyen dung khi tai khoan may tinh chia se de lai quyet dinh Chan cu tu nguoi dung truoc.

Quyen rieng tu va test camera thuc su lam gi

Test camera trinh duyet tren trang nay ket xuat xem truoc truc tiep hoan toan trong trinh duyet cua ban. Trang goi navigator.mediaDevices.getUserMedia({ video: true }) de yeu cau luong video, gan luong vao phan tu <video> an, va doc khung vao <canvas> de hien thi - tat ca tren thiet bi cua ban. Khong khung nao duoc tai len, khong ban ghi nao duoc luu, va dung test giai phong luong va den camera tat. Neu den camera van sang sau khi ban roi trang, do gan nhu luon la mot tab khac hoac ung dung khac dang giu thiet bi, khong phai trang nay; dong tab vi pham giai phong camera trong mot giay.

Quyen ban cap tu bieu tuong camera-co-gach tren thanh dia chi chi uy quyen cho cac trang tren freetoolonline.com goi getUserMedia({ video: true }) trong khi mot tab tu nguon goc nay dang hoat dong. Viec cap khong chuyen qua cac nguon goc, khong mo rong den cac trang con cua cac mien khac, va trinh duyet tu dong thu hoi no vao khoanh khac ban chuyen cai dat theo-trang tro lai "Hoi" hoac "Chan". Dong tab cung giai phong xem truoc truc tiep - den bao camera tat ngay khi luong dung, nen truy cap con lai bi gioi han boi tuoi tho tab thay vi do dai phien. Chinh sach Quyen rieng tu ghi lai hop dong khong-tai-len, khong-ghi cho be mat test camera bang ngon ngu ro rang.

Doc lien quan

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