{"id":612304,"date":"2026-09-28T13:08:39","date_gmt":"2026-09-28T06:08:39","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=612304"},"modified":"2026-09-28T13:08:39","modified_gmt":"2026-09-28T06:08:39","slug":"cctv-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/cctv-la-gi\/","title":{"rendered":"Closed Circuit Television (CCTV) l\u00e0 g\u00ec? Kh\u00e1c g\u00ec camera IP"},"content":{"rendered":"

CCTV l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Closed Circuit Television, ti\u1ebfng Vi\u1ec7t g\u1ecdi l\u00e0 truy\u1ec1n h\u00ecnh m\u1ea1ch k\u00edn. \u0110\u00e2y l\u00e0 h\u1ec7 th\u1ed1ng camera ghi h\u00ecnh r\u1ed3i truy\u1ec1n t\u00edn hi\u1ec7u trong m\u1ed9t m\u1ea1ch kh\u00e9p k\u00edn v\u1ec1 \u0111\u1ea7u ghi v\u00e0 m\u00e0n h\u00ecnh \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh, ch\u1ee9 kh\u00f4ng ph\u00e1t r\u1ed9ng r\u00e3i cho b\u1ea5t k\u1ef3 ai b\u1eaft \u0111\u01b0\u1ee3c s\u00f3ng nh\u01b0 truy\u1ec1n h\u00ecnh th\u01b0\u1eddng. CCTV d\u00f9ng \u0111\u1ec3 gi\u00e1m s\u00e1t an ninh, quan s\u00e1t ho\u1ea1t \u0111\u1ed9ng v\u00e0 l\u01b0u b\u1eb1ng ch\u1ee9ng h\u00ecnh \u1ea3nh cho nh\u00e0 \u1edf, c\u1eeda h\u00e0ng, v\u0103n ph\u00f2ng hay nh\u00e0 m\u00e1y.<\/p>\n

CCTV l\u00e0 g\u00ec v\u00e0 v\u00ec sao g\u1ecdi l\u00e0 “m\u1ea1ch k\u00edn”?<\/h2>\n

M\u1ea5u ch\u1ed1t n\u1eb1m \u1edf v\u1ebf “closed circuit”. Truy\u1ec1n h\u00ecnh qu\u1ea3ng b\u00e1 theo nguy\u00ean t\u1eafc m\u1edf: \u0111\u00e0i ph\u00e1t t\u00edn hi\u1ec7u ra kh\u00f4ng gian c\u00f4ng c\u1ed9ng, m\u1ecdi thi\u1ebft b\u1ecb thu trong v\u00f9ng ph\u1ee7 s\u00f3ng \u0111\u1ec1u xem \u0111\u01b0\u1ee3c. CCTV th\u00ec ng\u01b0\u1ee3c l\u1ea1i, t\u00edn hi\u1ec7u ch\u1ec9 ch\u1ea1y theo m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n ri\u00eang \u0111\u00e3 x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc, t\u1edbi \u0111\u00fang \u0111\u1ea7u ghi v\u00e0 m\u00e0n h\u00ecnh c\u1ee7a h\u1ec7 th\u1ed1ng \u0111\u00f3; ng\u01b0\u1eddi ngo\u00e0i kh\u00f4ng th\u1ec3 c\u1eafm m\u1ed9t chi\u1ebfc tivi b\u1ea5t k\u1ef3 v\u00e0o \u0111\u1ec3 xem. Ch\u00ednh t\u00ednh kh\u00e9p k\u00edn v\u00e0 gi\u1edbi h\u1ea1n ng\u01b0\u1eddi xem t\u1ea1o n\u00ean t\u00ean g\u1ecdi “m\u1ea1ch k\u00edn”.<\/p>\n

\"cctv-la-gi-1\"<\/p>\n

L\u1ecbch s\u1eed ra \u0111\u1eddi c\u1ee7a CCTV<\/h2>\n

M\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ch k\u00edn s\u01a1 khai \u0111\u01b0\u1ee3c nh\u00e0 v\u1eadt l\u00fd ng\u01b0\u1eddi Nga Leon Theremin ph\u00e1t tri\u1ec3n n\u0103m 1927 v\u00e0 l\u1eafp t\u1ea1i \u0111i\u1ec7n Kremlin. N\u0103m 1942, Siemens l\u1eafp CCTV t\u1ea1i b\u00e3i th\u1eed t\u00ean l\u1eeda V-2 \u1edf \u0110\u1ee9c \u0111\u1ec3 quan s\u00e1t t\u1eeb kho\u1ea3ng c\u00e1ch an to\u00e0n; h\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i \u0111\u1ea7u ti\u00ean t\u1ea1i M\u1ef9 ra m\u1eaft n\u0103m 1949 v\u1edbi t\u00ean Vericon. M\u1ee5c \u0111\u00edch ban \u0111\u1ea7u v\u00ec th\u1ebf l\u00e0 quan s\u00e1t t\u1eeb xa n\u01a1i con ng\u01b0\u1eddi kh\u00f4ng th\u1ec3 \u0111\u1ee9ng tr\u1ef1c ti\u1ebfp, ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u1ed1ng tr\u1ed9m. C\u00e1c h\u1ec7 \u0111\u1eddi \u0111\u1ea7u ch\u01b0a ghi l\u1ea1i \u0111\u01b0\u1ee3c, kh\u1ea3 n\u0103ng ghi h\u00ecnh ch\u1ec9 c\u00f3 t\u1eeb th\u1eadp ni\u00ean 1970, v\u00e0 n\u0103m 2014 doanh s\u1ed1 camera IP l\u1ea7n \u0111\u1ea7u v\u01b0\u1ee3t camera analog.<\/p>\n

Camera CCTV l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t v\u1edbi camera IP v\u00e0 camera wifi gia \u0111\u00ecnh<\/h2>\n

Camera CCTV l\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o c\u1ee7a h\u1ec7 m\u1ea1ch k\u00edn: thu h\u00ecnh v\u00e0 \u0111\u1ea9y t\u00edn hi\u1ec7u v\u1ec1 \u0111\u1ea7u ghi. Ng\u01b0\u1eddi Vi\u1ec7t hay g\u1ecdi g\u1ed9p m\u1ecdi thi\u1ebft b\u1ecb ghi h\u00ecnh l\u00e0 “camera an ninh”, d\u1eabn t\u1edbi nh\u1ea7m l\u1eabn gi\u1eefa ba th\u1ee9 kh\u00e1c nhau. “H\u1ec7 th\u1ed1ng CCTV” ngh\u0129a h\u1eb9p l\u00e0 h\u1ec7 analog: camera xu\u1ea5t t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 qua c\u00e1p \u0111\u1ed3ng tr\u1ee5c v\u1ec1 DVR, s\u1ed1 h\u00f3a v\u00e0 n\u00e9n di\u1ec5n ra t\u1ea1i \u0111\u1ea7u ghi. Camera IP s\u1ed1 h\u00f3a ngay trong camera r\u1ed3i truy\u1ec1n qua c\u00e1p m\u1ea1ng ho\u1eb7c wifi v\u1ec1 NVR. Camera wifi gia \u0111\u00ecnh l\u00e0 nh\u00e1nh g\u1ecdn nh\u1eb9 c\u1ee7a camera IP, l\u01b0u v\u00e0o th\u1ebb nh\u1edb.<\/p>\n\n\n\n\n\n\n\n\n\n
Ti\u00eau ch\u00ed<\/th>\nCCTV analog truy\u1ec1n th\u1ed1ng<\/th>\nCamera IP<\/th>\n<\/tr>\n<\/thead>\n
\u0110\u01b0\u1eddng truy\u1ec1n<\/b><\/td>\nC\u00e1p \u0111\u1ed3ng tr\u1ee5c cho h\u00ecnh, d\u00e2y ngu\u1ed3n \u0111i ri\u00eang<\/td>\nC\u00e1p m\u1ea1ng ho\u1eb7c wifi; m\u1ed9t s\u1ee3i c\u00e1p v\u1eeba truy\u1ec1n d\u1eef li\u1ec7u v\u1eeba c\u1ea5p ngu\u1ed3n theo chu\u1ea9n PoE<\/td>\n<\/tr>\n
\u0110\u1ea7u ghi<\/b><\/td>\nDVR, nh\u1eadn t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 r\u1ed3i s\u1ed1 h\u00f3a<\/td>\nNVR, nh\u1eadn s\u1eb5n lu\u1ed3ng video s\u1ed1, ho\u1eb7c l\u01b0u \u0111\u00e1m m\u00e2y<\/td>\n<\/tr>\n
Ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh<\/b><\/td>\nAnalog \u0111\u1eddi c\u0169 \u1edf m\u1ee9c SD; chu\u1ea9n HD-TVI, AHD, HD-CVI ph\u1ed5 bi\u1ebfn \u1edf 1080p, \u00edt t\u00ednh n\u0103ng th\u00f4ng minh<\/td>\nL\u1ef1a ch\u1ecdn t\u1edbi 4K, n\u00e9t h\u01a1n khi ph\u00f3ng to ho\u1eb7c thi\u1ebfu s\u00e1ng; h\u1ed7 tr\u1ee3 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t, c\u1ea3nh b\u00e1o v\u00f9ng c\u1ea5m<\/td>\n<\/tr>\n
Xem t\u1eeb xa<\/b><\/td>\nPh\u1ee5 thu\u1ed9c \u0111\u1ea7u ghi c\u00f3 k\u1ebft n\u1ed1i internet hay kh\u00f4ng<\/td>\nXem th\u1eb3ng t\u1eeb camera qua \u1ee9ng d\u1ee5ng ho\u1eb7c tr\u00ecnh duy\u1ec7t<\/td>\n<\/tr>\n
Chi ph\u00ed v\u00e0 m\u1edf r\u1ed9ng<\/b><\/td>\nThi\u1ebft b\u1ecb r\u1ebb h\u01a1n nh\u01b0ng gi\u1edbi h\u1ea1n b\u1edfi s\u1ed1 c\u1ed5ng tr\u00ean DVR<\/td>\n\u0110\u1ea7u t\u01b0 cao h\u01a1n, c\u1ea7n h\u1ea1 t\u1ea7ng m\u1ea1ng t\u1ed1t, b\u00f9 l\u1ea1i d\u1ec5 m\u1edf r\u1ed9ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110i\u1ec1u c\u1ea7n nh\u1edb: camera IP kh\u00f4ng \u0111\u1ed1i l\u1eadp v\u1edbi CCTV. Lu\u1ed3ng h\u00ecnh ch\u1ec9 ch\u1ea1y trong m\u1ea1ng ri\u00eang c\u00f3 ph\u00e2n quy\u1ec1n th\u00ec v\u1eabn l\u00e0 truy\u1ec1n h\u00ecnh m\u1ea1ch k\u00edn th\u1ebf h\u1ec7 m\u1edbi.<\/p>\n

M\u1ed9t h\u1ec7 th\u1ed1ng CCTV g\u1ed3m nh\u1eefng th\u00e0nh ph\u1ea7n n\u00e0o?<\/h2>\n

Camera<\/strong> quy\u1ebft \u0111\u1ecbnh ph\u1ea7n l\u1edbn ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh; lo\u1ea1i ngo\u00e0i tr\u1eddi c\u1ea7n v\u1ecf ch\u1ecbu m\u01b0a b\u1ee5i.<\/p>\n

\u0110\u1ea7u ghi DVR ho\u1eb7c NVR<\/strong> l\u00e0 trung t\u00e2m h\u1ec7 th\u1ed1ng: nh\u1eadn t\u00edn hi\u1ec7u, n\u00e9n, ghi xu\u1ed1ng \u1ed5 c\u1ee9ng, qu\u1ea3n l\u00fd l\u1ecbch ghi v\u00e0 tr\u00edch xu\u1ea5t video. DVR \u0111i v\u1edbi camera analog, NVR v\u1edbi camera IP.<\/p>\n

\u1ed4 c\u1ee9ng l\u01b0u tr\u1eef<\/strong> n\u00ean l\u00e0 lo\u1ea1i chuy\u00ean d\u1ee5ng cho gi\u00e1m s\u00e1t, ch\u1ecbu \u0111\u01b0\u1ee3c ghi li\u00ean t\u1ee5c.<\/p>\n

D\u00e2y t\u00edn hi\u1ec7u v\u00e0 ngu\u1ed3n \u0111i\u1ec7n<\/strong>: h\u1ec7 analog d\u00f9ng c\u00e1p \u0111\u1ed3ng tr\u1ee5c k\u00e8m d\u00e2y ngu\u1ed3n, h\u1ec7 IP d\u00f9ng c\u00e1p m\u1ea1ng v\u00e0 switch PoE. \u0110\u00e2y l\u00e0 ch\u1ed7 hay b\u1ecb c\u1eaft gi\u1ea3m v\u00e0 g\u00e2y nhi\u1ec5u h\u00ecnh.<\/p>\n

M\u00e0n h\u00ecnh v\u00e0 ph\u1ea7n m\u1ec1m gi\u00e1m s\u00e1t<\/strong> \u0111\u1ec3 xem t\u1ea1i ch\u1ed7 v\u00e0 t\u1eeb xa, v\u00e0 ph\u1ea7n m\u1ec1m l\u00e0 n\u01a1i b\u1ea1n ph\u00e2n quy\u1ec1n ai \u0111\u01b0\u1ee3c xem, ai \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t video.<\/p>\n

\"cctv-la-gi-2\"<\/p>\n

C\u00e1c lo\u1ea1i camera CCTV th\u01b0\u1eddng g\u1eb7p<\/h2>\n

Camera dome<\/strong> d\u00e1ng b\u00e1n c\u1ea7u, g\u1eafn tr\u1ea7n, v\u1ecf che khi\u1ebfn ng\u01b0\u1eddi ngo\u00e0i kh\u00f3 bi\u1ebft camera h\u01b0\u1edbng v\u1ec1 \u0111\u00e2u, h\u1ee3p v\u1edbi trong nh\u00e0.<\/p>\n

Camera bullet<\/strong> d\u00e1ng \u1ed1ng d\u00e0i, g\u1eafn t\u01b0\u1eddng, h\u01b0\u1edbng quan s\u00e1t l\u1ed9 r\u00f5; th\u00e2n d\u00e0i ch\u1ee9a \u0111\u01b0\u1ee3c \u1ed1ng k\u00ednh l\u1edbn v\u00e0 \u0111\u00e8n h\u1ed3ng ngo\u1ea1i m\u1ea1nh n\u00ean h\u1ee3p v\u1edbi c\u1ed5ng, b\u00e3i xe.<\/p>\n

Camera PTZ<\/strong> vi\u1ebft t\u1eaft c\u1ee7a pan, tilt, zoom: quay ngang, ng\u1ea9ng c\u00fai v\u00e0 ph\u00f3ng to theo \u0111i\u1ec1u khi\u1ec3n; bao qu\u00e1t di\u1ec7n t\u00edch l\u1edbn nh\u01b0ng m\u1ed7i l\u00fac ch\u1ec9 nh\u00ecn m\u1ed9t h\u01b0\u1edbng n\u00ean hay d\u00f9ng k\u00e8m camera c\u1ed1 \u0111\u1ecbnh.<\/p>\n

Camera h\u1ed3ng ngo\u1ea1i<\/strong> d\u00f9ng \u0111\u00e8n LED h\u1ed3ng ngo\u1ea1i \u0111\u1ec3 nh\u00ecn trong t\u1ed1i, h\u00ecnh ban \u0111\u00eam l\u00e0 tr\u1eafng \u0111en; m\u1ed9t s\u1ed1 d\u00f2ng thay b\u1eb1ng \u0111\u00e8n tr\u1eafng \u0111\u1ec3 cho h\u00ecnh m\u00e0u.<\/p>\n

Th\u00f4ng s\u1ed1 c\u1ea7n bi\u1ebft khi ch\u1ecdn camera CCTV<\/h2>\n

\u0110\u1ed9 ph\u00e2n gi\u1ea3i<\/strong> quy\u1ebft \u0111\u1ecbnh m\u1ee9c chi ti\u1ebft khi ph\u00f3ng to \u0111\u1ec3 \u0111\u1ecdc bi\u1ec3n s\u1ed1 hay nh\u1eadn m\u1eb7t ng\u01b0\u1eddi, nh\u01b0ng c\u00e0ng cao c\u00e0ng t\u1ed1n \u1ed5 c\u1ee9ng.<\/p>\n

G\u00f3c nh\u00ecn<\/strong> ph\u1ee5 thu\u1ed9c ti\u00eau c\u1ef1 \u1ed1ng k\u00ednh: g\u00f3c r\u1ed9ng bao qu\u00e1t t\u1ed1t nh\u01b0ng v\u1eadt \u1edf xa tr\u00f4ng nh\u1ecf, ti\u00eau c\u1ef1 d\u00e0i cho chi ti\u1ebft \u1edf xa nh\u01b0ng v\u00f9ng quan s\u00e1t h\u1eb9p.<\/p>\n

T\u1ea7m h\u1ed3ng ngo\u1ea1i<\/strong> l\u00e0 kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a camera c\u00f2n nh\u00ecn r\u00f5 trong t\u1ed1i, c\u00f4ng b\u1ed1 theo m\u00e9t, \u0111o \u1edf \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng n\u00ean th\u1ef1c t\u1ebf th\u01b0\u1eddng ng\u1eafn h\u01a1n.<\/p>\n

Chu\u1ea9n ch\u1ed1ng n\u01b0\u1edbc IP<\/strong> theo ti\u00eau chu\u1ea9n IEC 60529 g\u1ed3m hai ch\u1eef s\u1ed1: s\u1ed1 \u0111\u1ea7u ch\u1ec9 kh\u1ea3 n\u0103ng ch\u1ed1ng b\u1ee5i, s\u1ed1 sau ch\u1ec9 ch\u1ed1ng n\u01b0\u1edbc. V\u1edbi camera ngo\u00e0i tr\u1eddi, IP66 l\u00e0 k\u00edn b\u1ee5i v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c tia n\u01b0\u1edbc \u00e1p l\u1ef1c m\u1ea1nh, IP67 ch\u1ecbu th\u00eam ng\u00e2m n\u01b0\u1edbc n\u00f4ng.<\/p>\n

Kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef<\/strong> l\u00e0 t\u1ed5 h\u1ee3p c\u1ee7a dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng, s\u1ed1 camera, \u0111\u1ed9 ph\u00e2n gi\u1ea3i, chu\u1ea9n n\u00e9n v\u00e0 ch\u1ebf \u0111\u1ed9 ghi; ghi theo chuy\u1ec3n \u0111\u1ed9ng ti\u1ebft ki\u1ec7m h\u01a1n nh\u01b0ng d\u1ec5 b\u1ecf s\u00f3t chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm.<\/p>\n

\"cctv-la-gi-3\"<\/p>\n

CCTV \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u1edf \u0111\u00e2u?<\/h2>\n

\u1ede nh\u00e0 \u1edf, CCTV gi\u00fap b\u1ea1n quan s\u00e1t c\u1ed5ng, s\u00e2n v\u00e0 bi\u1ebft ai ra v\u00e0o khi v\u1eafng nh\u00e0. \u1ede c\u1eeda h\u00e0ng, h\u1ec7 th\u1ed1ng v\u1eeba r\u0103n \u0111e tr\u1ed9m c\u1eafp v\u1eeba l\u00e0 c\u0103n c\u1ee9 \u0111\u1ed1i chi\u1ebfu khi c\u00f3 khi\u1ebfu n\u1ea1i t\u1ea1i qu\u1ea7y thu ng\u00e2n. \u1ede v\u0103n ph\u00f2ng, camera th\u01b0\u1eddng \u0111\u1eb7t t\u1ea1i s\u1ea3nh, ph\u00f2ng m\u00e1y ch\u1ee7 v\u00e0 kho t\u00e0i li\u1ec7u. Trong nh\u00e0 m\u00e1y, CCTV gi\u00e1m s\u00e1t d\u00e2y chuy\u1ec1n v\u00e0 khu v\u1ef1c nguy hi\u1ec3m; v\u1edbi giao th\u00f4ng \u0111\u00f4 th\u1ecb, camera cung c\u1ea5p d\u1eef li\u1ec7u l\u01b0u l\u01b0\u1ee3ng v\u00e0 ph\u00e1t hi\u1ec7n vi ph\u1ea1m.<\/p>\n

Quy m\u00f4 c\u00e0ng l\u1edbn th\u00ec l\u01b0\u1ee3ng video c\u00e0ng kh\u1ed5ng l\u1ed3, k\u00e9o theo nhu c\u1ea7u ph\u00e2n t\u00edch t\u1ef1 \u0111\u1ed9ng, n\u00ean c\u00e1c h\u1ec7 l\u1edbn th\u01b0\u1eddng b\u1ed5 sung c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 l\u1ecdc ra s\u1ef1 ki\u1ec7n \u0111\u00e1ng ch\u00fa \u00fd.<\/p>\n

L\u01b0u \u00fd ph\u00e1p l\u00fd v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 khi l\u1eafp CCTV t\u1ea1i Vi\u1ec7t Nam<\/h2>\n

B\u1ea1n c\u00f3 quy\u1ec1n l\u1eafp camera trong kh\u00f4ng gian m\u00ecnh qu\u1ea3n l\u00fd, nh\u01b0ng h\u00ecnh \u1ea3nh thu \u0111\u01b0\u1ee3c li\u00ean quan t\u1edbi ng\u01b0\u1eddi kh\u00e1c n\u00ean c\u00f3 ranh gi\u1edbi c\u1ea7n t\u00f4n tr\u1ecdng. Th\u1ee9 nh\u1ea5t, kh\u00f4ng \u0111\u1eb7t camera \u1edf n\u01a1i ri\u00eang t\u01b0: nh\u00e0 v\u1ec7 sinh, ph\u00f2ng thay \u0111\u1ed3, ph\u00f2ng t\u1eafm, ph\u00f2ng ng\u1ee7 c\u1ee7a ng\u01b0\u1eddi kh\u00e1c tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c ghi h\u00ecnh. Th\u1ee9 hai, ch\u1ec9 thu h\u00ecnh trong ph\u1ea1m vi v\u1eeba \u0111\u1ee7, camera ngo\u00e0i c\u1ed5ng n\u00ean h\u01b0\u1edbng v\u00e0o ph\u1ea7n \u0111\u1ea5t c\u1ee7a b\u1ea1n thay v\u00ec ch\u0129a sang nh\u00e0 h\u00e0ng x\u00f3m. Th\u1ee9 ba, c\u1eeda h\u00e0ng v\u00e0 v\u0103n ph\u00f2ng n\u00ean c\u00f3 bi\u1ec3n b\u00e1o khu v\u1ef1c gi\u00e1m s\u00e1t.<\/p>\n

Th\u1ee9 t\u01b0, h\u00ecnh \u1ea3nh nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c m\u1ed9t con ng\u01b0\u1eddi c\u1ee5 th\u1ec3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c xem l\u00e0 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n, n\u00ean b\u1ea1n c\u1ea7n \u0111\u1eb7t m\u1eadt kh\u1ea9u m\u1ea1nh cho \u0111\u1ea7u ghi v\u00e0 \u1ee9ng d\u1ee5ng, gi\u1edbi h\u1ea1n ng\u01b0\u1eddi truy c\u1eadp v\u00e0 kh\u00f4ng t\u1ef1 \u00fd \u0111\u0103ng video c\u00f3 m\u1eb7t ng\u01b0\u1eddi kh\u00e1c l\u00ean m\u1ea1ng x\u00e3 h\u1ed9i. T\u1ea1i Vi\u1ec7t Nam, Lu\u1eadt B\u1ea3o v\u1ec7 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n \u0111\u00e3 c\u00f3 hi\u1ec7u l\u1ef1c t\u1eeb ng\u00e0y 01\/01\/2026, thay th\u1ebf ngh\u1ecb \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 si\u1ebft ch\u1eb7t ngh\u0129a v\u1ee5 c\u1ee7a b\u00ean thu th\u1eadp, x\u1eed l\u00fd d\u1eef li\u1ec7u. V\u1edbi h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p, nh\u1ea5t l\u00e0 h\u1ec7 c\u00f3 nh\u1eadn di\u1ec7n khu\u00f4n m\u1eb7t, b\u1ea1n n\u00ean tham v\u1ea5n \u00fd ki\u1ebfn ph\u00e1p l\u00fd tr\u01b0\u1edbc khi tri\u1ec3n khai.<\/p>\n

\"cctv-la-gi-4\"<\/p>\n

Chu\u1ea9n n\u00e9n v\u00e0 c\u1ea5p ngu\u1ed3n: hai th\u1ee9 quy\u1ebft \u0111\u1ecbnh chi ph\u00ed v\u1eadn h\u00e0nh<\/h2>\n

Hai chi ti\u1ebft \u00edt ai \u0111\u1ec3 \u00fd nh\u01b0ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi ti\u1ec1n \u1ed5 c\u1ee9ng v\u00e0 ti\u1ec1n d\u00e2y l\u00e0 chu\u1ea9n n\u00e9n video v\u00e0 c\u00e1ch c\u1ea5p ngu\u1ed3n cho camera.<\/p>\n

V\u1ec1 chu\u1ea9n n\u00e9n, H.264 v\u1eabn l\u00e0 m\u1eb7c \u0111\u1ecbnh t\u01b0\u01a1ng th\u00edch r\u1ed9ng nh\u1ea5t, c\u00f2n H.265 (HEVC) cho c\u00f9ng m\u1ee9c h\u00ecnh \u1ea3nh nh\u01b0ng bitrate th\u1ea5p h\u01a1n kho\u1ea3ng 40\u201350%, ngh\u0129a l\u00e0 c\u00f9ng m\u1ed9t \u1ed5 c\u1ee9ng b\u1ea1n l\u01b0u \u0111\u01b0\u1ee3c g\u1ea7n g\u1ea5p \u0111\u00f4i s\u1ed1 ng\u00e0y. \u0110\u1ed5i l\u1ea1i, m\u1ed9t s\u1ed1 \u0111\u1ea7u ghi \u0111\u1eddi c\u0169, tr\u00ecnh duy\u1ec7t ho\u1eb7c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng gi\u1ea3i m\u00e3 \u0111\u01b0\u1ee3c H.265, n\u00ean tr\u01b0\u1edbc khi b\u1eadt b\u1ea1n h\u00e3y th\u1eed xem l\u1ea1i tr\u00ean \u0111\u00fang thi\u1ebft b\u1ecb m\u00ecnh hay d\u00f9ng.<\/p>\n

V\u1ec1 c\u1ea5p ngu\u1ed3n, camera IP th\u01b0\u1eddng \u0111i theo chu\u1ea9n PoE c\u1ee7a IEEE: 802.3af c\u1ea5p t\u1ed1i \u0111a kho\u1ea3ng 15,4W m\u1ed7i c\u1ed5ng, c\u00f2n 802.3at (th\u01b0\u1eddng g\u1ecdi l\u00e0 PoE+) l\u00ean t\u1edbi kho\u1ea3ng 30W, \u0111\u1ee7 cho camera PTZ ho\u1eb7c camera c\u00f3 \u0111\u00e8n s\u01b0\u1edfi, \u0111\u00e8n tr\u1eafng c\u00f4ng su\u1ea5t cao. Khi ch\u1ecdn switch PoE, b\u1ea1n n\u00ean t\u00ednh t\u1ed5ng c\u00f4ng su\u1ea5t t\u1ea5t c\u1ea3 camera r\u1ed3i ch\u1eeba d\u01b0 kho\u1ea3ng 20\u201330%, v\u00ec camera ngo\u00e0i tr\u1eddi \u0103n \u0111i\u1ec7n nhi\u1ec1u h\u01a1n v\u00e0o ban \u0111\u00eam khi b\u1eadt h\u1ed3ng ngo\u1ea1i ho\u1eb7c s\u1ea5y k\u00ednh.<\/p>\n

N\u00ean ch\u1ecdn h\u1ec7 CCTV n\u00e0o: gia \u0111\u00ecnh hay doanh nghi\u1ec7p?<\/h2>\n

Kh\u00f4ng c\u00f3 c\u1ea5u h\u00ecnh t\u1ed1t nh\u1ea5t cho t\u1ea5t c\u1ea3; \u0111i\u1ec1u quy\u1ebft \u0111\u1ecbnh l\u00e0 s\u1ed1 \u0111i\u1ec3m c\u1ea7n nh\u00ecn, th\u1eddi gian c\u1ea7n l\u01b0u l\u1ea1i v\u00e0 m\u1ee9c \u0111\u1ed9 nghi\u00eam ng\u1eb7t v\u1ec1 quy\u1ec1n truy c\u1eadp.<\/p>\n

V\u1edbi gia \u0111\u00ecnh v\u00e0 c\u1eeda h\u00e0ng nh\u1ecf (2\u20134 camera):<\/strong><\/p>\n