{"id":5137,"date":"2018-10-19T15:12:14","date_gmt":"2018-10-19T08:12:14","guid":{"rendered":"https:\/\/giaiphapbienbac.com\/?p=5137"},"modified":"2018-10-20T07:41:01","modified_gmt":"2018-10-20T00:41:01","slug":"tim-hieu-ve-cbr-vbr-h264-h265-smart-codecs-va-cac-anh-huong-den-dung-luong-ghi-hinh-trong-he-thong-camera-giam-sat","status":"publish","type":"post","link":"https:\/\/giaiphapbienbac.com\/index.php\/2018\/10\/19\/tim-hieu-ve-cbr-vbr-h264-h265-smart-codecs-va-cac-anh-huong-den-dung-luong-ghi-hinh-trong-he-thong-camera-giam-sat\/","title":{"rendered":"T\u00ecm hi\u1ec3u v\u1ec1 CBR, VBR, H264, H265, Smart Codecs trong h\u1ec7 th\u1ed1ng camera gi\u00e1m s\u00e1t"},"content":{"rendered":"<p>Trong h\u1ec7 th\u1ed1ng camera gi\u00e1m s\u00e1t, nh\u1ea5t l\u00e0 h\u1ec7 th\u1ed1ng camera IP, c\u00e1c c\u00e0i \u0111\u1eb7t v\u1ec1 chu\u1ea9n n\u00e9n h\u00ecnh \u1ea3nh, ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n b\u0103ng th\u00f4ng m\u1ea1ng,&#8230;l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh camera v\u00e0 th\u1eddi gian l\u01b0u tr\u1eef c\u1ee7a to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n<p>B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y v\u1ec1 c\u00e1c kh\u00e1i ni\u1ec7m VBR, CBR, Smart Codec th\u01b0\u1eddng th\u1ea5y trong menu setup c\u1ee7a c\u00e1c camera IP ho\u1eb7c \u0111\u1ea7u ghi h\u00ecnh.<\/p>\n<p><strong>VBR &amp; CBR<\/strong><\/p>\n<ul>\n<li>VBR: Variable Bitrate = b\u0103ng th\u00f4ng thay \u0111\u1ed5i t\u00f9y theo m\u1eadt \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng trong v\u00f9ng quan s\u00e1t c\u1ee7a camera theo h\u01b0\u1edbng gi\u1eef nguy\u00ean ch\u1ea5t l\u01b0\u1ee3ng \u1ea3nh.<\/li>\n<li>CBR: Constant Bitrate = b\u0103ng th\u00f4ng lu\u00f4n \u0111\u01b0\u1ee3c gi\u1eef c\u1ed1 \u0111\u1ecbnh<\/li>\n<li>Trong m\u1ed7i camera, c\u00f3 th\u1ec3 ch\u1ecdn s\u1eed d\u1ee5ng ch\u1ebf \u0111\u1ed9 VBR ho\u1eb7c CBR. V\u1edbi VBR, gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng \u0111\u1eb7t l\u00e0 &#8220;gi\u1edbi h\u1ea1n t\u1ed1i \u0111a&#8221;, trong khi v\u1edbi CBR, gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng \u0111\u1eb7t kh\u00f4ng thay \u0111\u1ed5i trong to\u00e0n th\u1eddi gian.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"size-full wp-image-5138 aligncenter\" src=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/VBR-CBR.jpg\" alt=\"\" width=\"633\" height=\"289\" srcset=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/VBR-CBR.jpg 633w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/VBR-CBR-300x137.jpg 300w\" sizes=\"(max-width: 633px) 100vw, 633px\" \/><\/p>\n<ul>\n<li>Gi\u00e1 tr\u1ecb \u0111\u1eb7t c\u1ee7a b\u0103ng th\u00f4ng \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh v\u00e0 dung l\u01b0\u1ee3ng ghi h\u00ecnh. \u0110\u1eb7t th\u1ea5p qu\u00e1 th\u00ec h\u00ecnh \u1ea3nh b\u1ecb nh\u00f2e, \u0111\u1eb7t cao qu\u00e1 th\u00ec dung l\u01b0\u1ee3ng ghi h\u00ecnh l\u1edbn.<\/li>\n<li>V\u1edbi ch\u1ebf \u0111\u1ed9 CBR, do b\u0103ng th\u00f4ng lu\u00f4n c\u1ed1 \u0111\u1ecbnh n\u00ean c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u01b0\u1edbc l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c dung l\u01b0\u1ee3ng ghi h\u00ecnh. V\u00ed d\u1ee5 1 camera, \u0111\u1eb7t b\u0103ng th\u00f4ng = 2 Mbps(2 Megabit \/ gi\u00e2y) (2048 Kbps = 2048 Kilobit \/ gi\u00e2y) th\u00ec dung l\u01b0\u1ee3ng ghi h\u00ecnh li\u00ean t\u1ee5c trong 1 ng\u00e0y l\u00e0: <b>24 (gi\u1edd) x 60 (ph\u00fat) x 60 (gi\u00e2y) x 2 (Mbps) \/ 8 (1 byte = 8 bit) = 21,600 (Megabyte) ~ 21.6 GB<\/b><\/li>\n<li>V\u1edbi ch\u1ebf \u0111\u1ed9 VBR, do b\u0103ng th\u00f4ng l\u00e0 tr\u1ecb t\u1ed1i \u0111a, ch\u1ec9 khi n\u00e0o c\u00f3 nhi\u1ec1u chuy\u1ec3n \u0111\u1ed9ng, camera m\u1edbi t\u0103ng b\u0103ng th\u00f4ng l\u00ean gi\u00e1 tr\u1ecb t\u1ed1i \u0111a \u0111\u00f3 n\u00ean kh\u00f4ng th\u1ec3 t\u00ednh \u0111\u00fang \u0111\u01b0\u1ee3c dung l\u01b0\u1ee3ng ghi h\u00ecnh. Tuy nhi\u00ean, d\u1ef1a v\u00e0o \u01b0\u1edbc l\u01b0\u1ee3ng m\u1eadt \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng c\u0169ng c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c. V\u00ed d\u1ee5, c\u0169ng v\u1edbi camera nh\u01b0 tr\u00ean, \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i n\u01a1i c\u00f3 m\u1eadt \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng l\u00e0 70% (70% th\u1eddi gian trong ng\u00e0y c\u00f3 ng\u01b0\u1eddi, xe c\u1ed9,&#8230; qua l\u1ea1i) th\u00ec dung l\u01b0\u1ee3ng ghi h\u00ecnh \u01b0\u1edbc t\u00ednh l\u00e0: <b>21.6 x 0.7 = 15.1 GB<\/b><\/li>\n<li><b>C\u00e1c t\u00ednh to\u00e1n tr\u00ean l\u00e0 \u0111\u00fang v\u1edbi m\u1ecdi lo\u1ea1i camera, m\u1ecdi chu\u1ea9n n\u00e9n (H264, H265,&#8230;), m\u1ecdi \u0111\u1ed9 ph\u00e2n gi\u1ea3i, t\u1ed1c \u0111\u1ed9 khung,&#8230;<\/b><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>\u0110\u1eb7t gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng, ho\u1eb7c b\u0103ng th\u00f4ng t\u1ed1i \u0111a l\u00e0 bao nhi\u00eau cho ph\u00f9 h\u1ee3p ?<\/strong><\/p>\n<ul>\n<li>Th\u00f4ng th\u01b0\u1eddng khi camera xu\u1ea5t x\u01b0\u1edfng, nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 \u0111\u1eb7t c\u00e1c th\u00f4ng s\u1ed1 m\u1eb7c \u0111\u1ecbnh \u0111\u1ec3 cho ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh t\u1ed1t nh\u1ea5t. Tuy nhi\u00ean t\u00f9y v\u00e0o th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng nh\u01b0: khung c\u1ea3nh v\u00f9ng quan s\u00e1t, y\u00eau c\u1ea7u v\u1ec1 s\u1ed1 ng\u00e0y l\u01b0u tr\u1eef, \u0111\u1ed9 ph\u1ea7n gi\u1ea3i, t\u1ed1c \u0111\u1ed9 khung, chu\u1ea9n n\u00e9n, s\u1ed1 l\u01b0\u1ee3ng truy c\u1eadp, y\u00eau c\u1ea7u v\u1ec1 xem qua m\u1ea1ng (c\u0169ng nh\u01b0 \u0111\u00e1p \u1ee9ng c\u1ee7a \u0111\u01b0\u1eddng truy\u1ec1n internet),&#8230; m\u00e0 c\u00f3 th\u1ec3 \u0111\u1eb7t l\u1ea1i c\u00e1c th\u00f4ng s\u1ed1 b\u0103ng th\u00f4ng cho ph\u00f9 h\u1ee3p.<\/li>\n<li>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng khuy\u1ebfn c\u00e1o \u0111\u1eb7t c\u00e1c gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng cho c\u00e1c camera \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1eeb CIF (320&#215;240) \u0111\u1ebfn FullHD (1920&#215;1080)<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"size-full wp-image-5139 aligncenter\" src=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/bang-khuyen-nghi-bang-thong.jpg\" alt=\"\" width=\"934\" height=\"681\" srcset=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/bang-khuyen-nghi-bang-thong.jpg 934w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/bang-khuyen-nghi-bang-thong-300x219.jpg 300w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/bang-khuyen-nghi-bang-thong-768x560.jpg 768w\" sizes=\"(max-width: 934px) 100vw, 934px\" \/><\/p>\n<p><strong>So s\u00e1nh dung l\u01b0\u1ee3ng ghi h\u00ecnh gi\u1eefa 2 ch\u1ebf \u0111\u1ed9 VBR v\u00e0 CBR<\/strong><\/p>\n<ul>\n<li>Tr\u00ean c\u00f9ng 1 camera, chu\u1ea9n n\u00e9n H264, \u0111\u1ed9 ph\u00e2n gi\u1ea3i 2688 x 1520, t\u1ed1c \u0111\u1ed9 khung 25 fps, b\u0103ng th\u00f4ng\/b\u0103ng th\u00f4ng t\u1ed1i \u0111a 8192 Kbps, quan s\u00e1t ph\u00f2ng l\u00e0m vi\u1ec7c, ghi h\u00ecnh trong kho\u1ea3ng th\u1eddi gian 2 ph\u00fat<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"size-full wp-image-5140 aligncenter\" src=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/so-sanh-ghi-hinh-vbr-cbr.jpg\" alt=\"\" width=\"858\" height=\"91\" srcset=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/so-sanh-ghi-hinh-vbr-cbr.jpg 858w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/so-sanh-ghi-hinh-vbr-cbr-300x32.jpg 300w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/so-sanh-ghi-hinh-vbr-cbr-768x81.jpg 768w\" sizes=\"(max-width: 858px) 100vw, 858px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>H264 vs H265<\/strong><\/p>\n<ul>\n<li>H265 l\u00e0 1 chu\u1ea9n n\u00e9n m\u1edbi, theo nh\u01b0 gi\u1edbi thi\u1ec7u c\u1ee7a c\u00e1c h\u00e3ng s\u1ea3n xu\u1ea5t camera, chu\u1ea9n n\u00e9n n\u00e0y c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef (th\u00f4ng qua vi\u1ec7c gi\u1ea3m b\u0103ng th\u00f4ng) t\u1eeb 40%-50%<\/li>\n<li>Th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf v\u1edbi 1 camera, chu\u1ea9n n\u00e9n H265, \u0111\u1ed9 ph\u00e2n gi\u1ea3i 2688 x 1520, t\u1ed1c \u0111\u1ed9 khung 25 fps, b\u0103ng th\u00f4ng\/b\u0103ng th\u00f4ng t\u1ed1i \u0111a 8192 Kbps, quan s\u00e1t ph\u00f2ng l\u00e0m vi\u1ec7c, ghi h\u00ecnh trong kho\u1ea3ng th\u1eddi gian 2 ph\u00fat<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"size-full wp-image-5141 aligncenter\" src=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/H264-H265.jpg\" alt=\"\" width=\"858\" height=\"158\" srcset=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/H264-H265.jpg 858w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/H264-H265-300x55.jpg 300w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/H264-H265-768x141.jpg 768w\" sizes=\"(max-width: 858px) 100vw, 858px\" \/><\/p>\n<ul>\n<li>Nh\u01b0 v\u1eady c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng n\u1ebfu \u0111\u1eb7t ch\u1ebf \u0111\u1ed9 CBR v\u1edbi c\u00f9ng 1 gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng th\u00ec chu\u1ea9n n\u00e9n H265 kh\u00f4ng c\u00f3 \u00fd ngh\u0129a. D\u1ef1a theo khuy\u1ebfn c\u00e1o c\u1ee7a h\u00e3ng s\u1ea3n xu\u1ea5t (gi\u1ea3m 40-50% b\u0103ng th\u00f4ng) m\u00e0 c\u00f3 th\u1ec3 \u0111\u1eb7t gi\u00e1 tr\u1ecb b\u0103ng th\u00f4ng th\u1ea5p h\u01a1n v\u1edbi chu\u1ea9n n\u00e9n H265, l\u00fac \u0111\u00f3 H265 \u1edf ch\u1ebf \u0111\u1ed9 CBR m\u1edbi c\u00f3 \u00fd ngh\u0129a. V\u00ed d\u1ee5 v\u1edbi camera 4MP, chu\u1ea9n n\u00e9n H264 \u0111\u1eb7t b\u0103ng th\u00f4ng l\u00e0 8 Mbps th\u00ec v\u1edbi chu\u1ea9n n\u00e9n H265, ch\u1ec9 c\u1ea7n \u0111\u1eb7t 4 Mbps.<\/li>\n<li>Do chu\u1ea9n H265 m\u1edbi b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn n\u00ean hi\u1ec7n t\u1ea1i v\u1eabn c\u00f2n \u00edt c\u00e1c camera, ph\u1ea7n m\u1ec1m ghi h\u00ecnh, \u0111\u1ea7u ghi h\u1ed7 tr\u1ee3.<\/li>\n<li>N\u1ebfu d\u00f9ng camera H265 v\u1edbi ph\u1ea7n m\u1ec1m ghi h\u00ecnh, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng ph\u1ea3i t\u1ed1n nhi\u1ec1u CPU h\u01a1n \u0111\u1ec3 gi\u1ea3i m\u00e3 H265 (=&gt; ph\u1ea3i ch\u1ecdn CPU c\u1ea5u h\u00ecnh cao h\u01a1n so v\u1edbi s\u1eed d\u1ee5ng camera H264), th\u00f4ng th\u01b0\u1eddng t\u1eeb 10-40%. Th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf v\u1edbi ph\u1ea7n m\u1ec1m Video Insight, th\u1ea5y CPU cao h\u01a1n ~ 2 l\u1ea7n, v\u1edbi ph\u1ea7n m\u1ec1m View100 (phi\u00ean b\u1ea3n 64 bit, \u0111ang ph\u00e1t tri\u1ec3n) CPU cao h\u01a1n ~ 1.5 l\u1ea7n &amp; h\u00ecnh \u1ea3nh tr\u1ec5 h\u01a1n \u0111\u00f4i ch\u00fat.<\/li>\n<\/ul>\n<p><strong>Smart Codecs<\/strong><\/p>\n<ul>\n<li>Hi\u1ec7n nay, c\u00e1c h\u00e3ng s\u1ea3n xu\u1ea5t camera, ngo\u00e0i vi\u1ec7c gi\u1edbi thi\u1ec7u c\u00e1c camera s\u1eed d\u1ee5ng chu\u1ea9n n\u00e9n H264, H265 c\u00f2n gi\u1edbi thi\u1ec7u c\u00e1c chu\u1ea9n n\u00e9n H264+, H265+, H264\/H265 Smart Coding (Panasonic), Smart Codec (DAHUA, HIKVISION), Zipstream (Axis), Wisestream (Hanwa Techwin), Smart Stream II (Vivotek),&#8230;<\/li>\n<li>Nh\u1eefng chu\u1ea9n n\u00e9n n\u00e0y l\u00e0 nh\u1eefng chu\u1ea9n n\u00e9n \u0111\u01b0\u1ee3c c\u00e1c h\u00e3ng c\u1ea3i ti\u1ebfn so v\u1edbi so v\u1edbi c\u00e1c chu\u1ea9n n\u00e9n ti\u00eau chu\u1ea9n H264, H265, d\u1ef1a tr\u00ean m\u1ed9t v\u00e0i nguy\u00ean l\u00fd nh\u01b0:\n<ul>\n<li>\u00c1p d\u1ee5ng c\u00e1c m\u1ee9c \u0111\u1ed9 n\u00e9n kh\u00e1c nhau \u0111\u1ed1i v\u1edbi t\u1eebng v\u00f9ng tr\u00ean \u1ea3nh (v\u00f9ng c\u00f3 chuy\u1ec3n \u0111\u1ed9ng th\u00ec n\u00e9n \u00edt, v\u00f9ng k c\u00f3 chuy\u1ec3n \u0111\u1ed9ng th\u00ec n\u00e9n nhi\u1ec1u)<\/li>\n<li>T\u0103ng th\u1eddi gian (gi\u1ea3m t\u1ea7n xu\u1ea5t) xu\u1ea5t hi\u1ec7n c\u1ee7a I-FRAME (frame ho\u00e0n ch\u1ec9nh, ch\u1ee9a \u0111\u1ee7 th\u00f4ng tin, ch\u1ec9 khi c\u00f3 chuy\u1ec3n \u0111\u1ed9ng th\u00ec m\u1edbi \u0111\u01b0a v\u00e0o I-Frame, khi kh\u00f4ng c\u00f3 chuy\u1ec3n \u0111\u1ed9ng th\u00ec l\u00e2u l\u00e2u m\u1edbi xu\u1ea5t hi\u1ec7n I-Frame)<\/li>\n<li>Kh\u1eed nhi\u1ec5u<\/li>\n<li>&#8230;<\/li>\n<\/ul>\n<\/li>\n<li>V\u1edbi c\u00e1c chu\u1ea9n n\u00e9n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng Smart Codecs, dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef gi\u1ea3m (th\u00f4ng qua vi\u1ec7c gi\u1ea3m b\u0103ng th\u00f4ng) t\u1eeb 40-70%.<\/li>\n<li>Smart Codecs ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng v\u1edbi ch\u1ebf \u0111\u1ed9 VBR (G\u1ea7n \u0111\u00e2y Panasonic n\u00f3i ch\u1ebf \u0111\u1ed9 Smart Coding c\u1ee7a h\u1ecd c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u1ea3 ch\u1ebf \u0111\u1ed9 CBR)<\/li>\n<li>Th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf v\u1edbi 1 camera, chu\u1ea9n n\u00e9n H265, \u0111\u1ed9 ph\u00e2n gi\u1ea3i 2688 x 1520, t\u1ed1c \u0111\u1ed9 khung 25 fps, VBR, b\u0103ng th\u00f4ng t\u1ed1i \u0111a 8192 Kbps, quan s\u00e1t ph\u00f2ng l\u00e0m vi\u1ec7c, ghi h\u00ecnh trong kho\u1ea3ng th\u1eddi gian 2 ph\u00fat<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"size-full wp-image-5142 aligncenter\" src=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/smart-codec.jpg\" alt=\"\" width=\"858\" height=\"130\" srcset=\"https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/smart-codec.jpg 858w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/smart-codec-300x45.jpg 300w, https:\/\/giaiphapbienbac.com\/wp-content\/uploads\/2018\/10\/smart-codec-768x116.jpg 768w\" sizes=\"(max-width: 858px) 100vw, 858px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>K\u1ebft lu\u1eadn<\/strong><\/p>\n<ul>\n<li>N\u00ean c\u00e0i \u0111\u1eb7t ch\u1ebf \u0111\u1ed9 VBR m\u1edbi Max Bitrate h\u1ee3p l\u00fd \u0111\u1ec3 gi\u1ea3m dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef c\u0169ng nh\u01b0 b\u0103ng th\u00f4ng m\u1ea1ng<\/li>\n<li>S\u1eed d\u1ee5ng Smart Codecs n\u1ebfu c\u00f3 th\u1ec3.<\/li>\n<li>N\u1ebfu s\u1eed d\u1ee5ng H265 v\u00e0 ph\u1ea7n m\u1ec1m ghi h\u00ecnh, c\u1ea7n l\u01b0u \u00fd s\u1ef1 t\u01b0\u01a1ng th\u00edch v\u1edbi ph\u1ea7n m\u1ec1m v\u00e0 t\u00ednh to\u00e1n CPU<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Trong h\u1ec7 th\u1ed1ng camera gi\u00e1m s\u00e1t, nh\u1ea5t l\u00e0 h\u1ec7 th\u1ed1ng camera IP, c\u00e1c c\u00e0i \u0111\u1eb7t v\u1ec1 chu\u1ea9n n\u00e9n h\u00ecnh \u1ea3nh, ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n b\u0103ng th\u00f4ng m\u1ea1ng,&#8230;l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng h\u00ecnh \u1ea3nh camera v\u00e0 th\u1eddi gian l\u01b0u tr\u1eef c\u1ee7a to\u00e0n h\u1ec7 th\u1ed1ng.<a href=\"https:\/\/giaiphapbienbac.com\/index.php\/2018\/10\/19\/tim-hieu-ve-cbr-vbr-h264-h265-smart-codecs-va-cac-anh-huong-den-dung-luong-ghi-hinh-trong-he-thong-camera-giam-sat\/\" class=\"read-more\">\u0110\u1ecdc ti\u1ebfp<\/a><\/p>\n","protected":false},"author":3,"featured_media":5143,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7,9],"tags":[],"_links":{"self":[{"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/posts\/5137"}],"collection":[{"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/comments?post=5137"}],"version-history":[{"count":3,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/posts\/5137\/revisions"}],"predecessor-version":[{"id":5146,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/posts\/5137\/revisions\/5146"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/media\/5143"}],"wp:attachment":[{"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/media?parent=5137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/categories?post=5137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/giaiphapbienbac.com\/index.php\/wp-json\/wp\/v2\/tags?post=5137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}