{"id":274378,"date":"2023-10-24T20:03:00","date_gmt":"2023-10-24T13:03:00","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=274378"},"modified":"2023-10-24T20:03:00","modified_gmt":"2023-10-24T13:03:00","slug":"codec","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/codec\/","title":{"rendered":"Codec l\u00e0 g\u00ec? C\u00f3 quan tr\u1ecdng kh\u00f4ng? M\u00e1y t\u00ednh c\u1ea7n bao nhi\u00eau?"},"content":{"rendered":"<p>Thu\u1eadt ng\u1eef &#8220;codec&#8221; xu\u1ea5t hi\u1ec7n r\u1ea5t nhi\u1ec1u. \u0110\u1eb7c bi\u1ec7t khi n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u00e2m thanh v\u00e0 video, c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt n\u00e9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m cho t\u1ec7p nh\u1ecf h\u01a1n. Tuy nhi\u00ean thu\u1eadt ng\u1eef n\u00e0y c\u00f3 ngh\u0129a l\u00e0 g\u00ec v\u00e0 n\u00f3 \u0111\u1ebfn t\u1eeb \u0111\u00e2u? H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u chi ti\u1ebft v\u1ec1 ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 n\u00e0y qua chia s\u1ebb d\u01b0\u1edbi \u0111\u00e2y nh\u00e9.<\/p>\n<h2>Codec l\u00e0 g\u00ec?<\/h2>\n<p>\u201cCodec\u201d l\u00e0 thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 ph\u1ea7n m\u1ec1m c\u00f3 th\u1ec3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u. V\u00ed d\u1ee5: codec MP3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o t\u1ec7p MP3 t\u1eeb d\u1eef li\u1ec7u \u00e2m thanh. Ph\u1ea7n m\u1ec1m n\u00e0y gi\u1ea3m thi\u1ec3u c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 video, \u00e2m thanh v\u00e0 h\u00ecnh \u1ea3nh. M\u1ee5c \u0111\u00edch l\u00e0 \u0111\u1ec3 ti\u1ebft ki\u1ec7m b\u1ed9 nh\u1edb thi\u1ebft b\u1ecb v\u00e0 truy\u1ec1n c\u00e1c t\u1ec7p \u0111\u00f3 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 qua c\u00e1c m\u1ea1ng nh\u01b0 internet. V\u1ec1 b\u1ea3n ch\u1ea5t, codec \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 \u0111\u1ec3 g\u1eedi \u0111i ho\u1eb7c l\u01b0u l\u1ea1i. Sau \u0111\u00f3 ng\u01b0\u1eddi d\u00f9ng s\u1ebd xem b\u1eb1ng b\u1ed9 gi\u1ea3i m\u00e3 t\u01b0\u01a1ng \u1ee9ng. Thu\u1eadt ng\u1eef codec l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c t\u1eeb b\u1ed9 m\u00e3 h\u00f3a, b\u1ed9 gi\u1ea3i m\u00e3, n\u00e9n v\u00e0 gi\u1ea3i n\u00e9n.<\/p>\n<figure id=\"attachment_275691\" aria-describedby=\"caption-attachment-275691\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-275691 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-2.jpg\" alt=\"codec-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275691\" class=\"wp-caption-text\">\u201cCodec\u201d l\u00e0 thu\u1eadt ng\u1eef d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 ph\u1ea7n m\u1ec1m c\u00f3 th\u1ec3 m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u<\/figcaption><\/figure>\n<p>Codec chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u t\u1eeb m\u1ed9t \u0111\u1ecbnh d\u1ea1ng, m\u00e3 h\u00f3a n\u00f3 sang \u0111\u1ecbnh d\u1ea1ng kh\u00e1c. \u0110\u1ed3ng th\u1eddi b\u1ed9 ph\u1ea7n m\u1ec1m n\u00e0y gi\u1ea3i m\u00e3 n\u00f3 t\u1ea1i \u0111i\u1ec3m tho\u00e1t c\u1ee7a phi\u00ean giao ti\u1ebfp. M\u1ed9t codec bao g\u1ed3m m\u1ed9t b\u1ed9 m\u00e3 h\u00f3a v\u00e0 m\u1ed9t b\u1ed9 gi\u1ea3i m\u00e3. B\u1ed9 m\u00e3 h\u00f3a l\u00e0m gi\u1ea3m k\u00edch th\u01b0\u1edbc c\u1ee7a t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n, trong khi b\u1ed9 gi\u1ea3i m\u00e3 s\u1ebd m\u1edf r\u1ed9ng n\u00f3. M\u1ed7i codec \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 m\u00e3 h\u00f3a c\u00e1c lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c nhau nh\u01b0 video v\u00e0 \u00e2m thanh.<\/p>\n<p>M\u1eb7c d\u00f9 thu\u1eadt ng\u1eef codec l\u00e0 m\u1ed9t t\u1eeb gh\u00e9p c\u1ee7a t\u1eeb b\u1ed9 m\u00e3 h\u00f3a v\u00e0 b\u1ed9 gi\u1ea3i m\u00e3. Tuy nhi\u00ean c\u00f9ng m\u1ed9t ph\u1ea7n m\u1ec1m kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i lu\u00f4n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u1ea3 hai t\u00e1c v\u1ee5. Trong \u0111\u00f3 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 b\u1ed9 m\u00e3 h\u00f3a LAME MP3 g\u1ed1c v\u00e0 b\u1ed9 m\u00e3 h\u00f3a video DivX.<\/p>\n<h2>T\u1ea7m quan tr\u1ecdng c\u1ee7a Codec<\/h2>\n<p>Codec \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong ph\u01b0\u01a1ng ti\u1ec7n k\u1ef9 thu\u1eadt s\u1ed1 v\u00ec nhi\u1ec1u l\u00fd do. N\u00f3 bao g\u1ed3m nh\u01b0ng kh\u00f4ng gi\u1edbi h\u1ea1n \u1edf nh\u1eefng l\u00fd do sau.<\/p>\n<h3>Truy\u1ec1n d\u1eef li\u1ec7u hi\u1ec7u qu\u1ea3 h\u01a1n<\/h3>\n<p>C\u00e1c t\u1eadp tin video v\u00e0 \u00e2m nh\u1ea1c th\u01b0\u1eddng c\u00f3 k\u00edch th\u01b0\u1edbc r\u1ea5t l\u1edbn. K\u00edch th\u01b0\u1edbc l\u1edbn n\u00e0y th\u01b0\u1eddng khi\u1ebfn ch\u00fang g\u1eb7p kh\u00f3 kh\u0103n khi truy\u1ec1n qua Internet. Vi\u1ec7c truy\u1ec1n t\u1ea3i n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u trong c\u00e1c g\u00f3i nh\u1ecf h\u01a1n, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 t\u1ea3i xu\u1ed1ng ch\u1eadm v\u00e0 truy\u1ec1n d\u1eef li\u1ec7u kh\u00f4ng hi\u1ec7u qu\u1ea3. M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a codec l\u00e0 n\u00e9n c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n. V\u1ec1 b\u1ea3n ch\u1ea5t, codec l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi tr\u1ea3i nghi\u1ec7m truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00e0 t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh t\u1ea3i xu\u1ed1ng, codec s\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. C\u00e1c ph\u1ea7n m\u1ec1m n\u00e0y ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch m\u00e3 h\u00f3a ho\u1eb7c n\u00e9n t\u00edn hi\u1ec7u \u0111\u1ec3 truy\u1ec1n. Qu\u00e1 tr\u00ecnh n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc c\u1ee7a t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng. Sau \u0111\u00f3, t\u1ec7p n\u00e9n s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi qua internet, chi\u1ebfm \u00edt b\u0103ng th\u00f4ng h\u01a1n v\u00e0 do \u0111\u00f3 truy\u1ec1n v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n.<\/p>\n<figure id=\"attachment_275692\" aria-describedby=\"caption-attachment-275692\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"wp-image-275692 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-3.jpg\" alt=\"codec-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275692\" class=\"wp-caption-text\">M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a codec l\u00e0 n\u00e9n c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n<\/figcaption><\/figure>\n<p>N\u1ebfu c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c n\u00e9n, vi\u1ec7c truy\u1ec1n c\u00e1c t\u1ec7p n\u00e0y qua internet s\u1ebd kh\u00f3 kh\u0103n v\u00e0 t\u1ed1n th\u1eddi gian h\u01a1n \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y l\u00e0 do c\u00e1c t\u1ec7p kh\u00f4ng n\u00e9n c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n v\u00e0 y\u00eau c\u1ea7u nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n \u0111\u1ec3 truy\u1ec1n. Tr\u00ean th\u1ef1c t\u1ebf, ng\u01b0\u1eddi ta \u01b0\u1edbc t\u00ednh r\u1eb1ng qu\u00e1 tr\u00ecnh t\u1ea3i xu\u1ed1ng s\u1ebd m\u1ea5t nhi\u1ec1u th\u1eddi gian h\u01a1n kho\u1ea3ng ba \u0111\u1ebfn n\u0103m l\u1ea7n so v\u1edbi hi\u1ec7n t\u1ea1i v\u1edbi codec. B\u1eb1ng c\u00e1ch n\u00e9n c\u00e1c t\u1ec7p n\u00e0y, ph\u1ea7n m\u1ec1m n\u00e0y gi\u1ea3m l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ea7n truy\u1ec1n. T\u1eeb \u0111\u00f3 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh chia s\u1ebb v\u00e0 l\u00e0m cho n\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<h3>B\u1ea3o to\u00e0n kh\u00f4ng gian l\u01b0u tr\u1eef<\/h3>\n<p>M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 n\u00e9n c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n. Nh\u1edd \u0111\u00f3 ti\u1ebft ki\u1ec7m kh\u00f4ng gian l\u01b0u tr\u1eef. N\u1ebfu kh\u00f4ng c\u00f3 ch\u00fang, c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n s\u1ebd ti\u00eau t\u1ed1n nhi\u1ec1u dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef h\u01a1n \u0111\u00e1ng k\u1ec3. Vi\u1ec7c t\u1ea3i xu\u1ed1ng tr\u1ef1c tuy\u1ebfn s\u1ebd ch\u1eadm h\u01a1n \u0111\u00e1ng k\u1ec3. C\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 tho\u1ea1i qua IP s\u1ebd kh\u00f4ng kh\u1ea3 thi. M\u1ed9t s\u1ed1 lo\u1ea1i t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 video, c\u00f3 th\u1ec3 c\u1ef1c k\u1ef3 l\u1edbn. N\u00f3 s\u1ebd chi\u1ebfm dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef \u0111\u00e1ng k\u1ec3 n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c n\u00e9n.<\/p>\n<p>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng l\u01b0\u1ee3ng d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u01b0u tr\u1eef video kh\u00f4ng n\u00e9n:<\/p>\n<ul>\n<li>M\u1ed9t khung h\u00ecnh video \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao (1920&#215;1080) c\u00f3 \u0111\u1ee7 m\u00e0u (4 byte m\u1ed7i pixel) l\u00e0 8.294.400 byte.<\/li>\n<li>V\u1edbi t\u1ed1c \u0111\u1ed9 th\u00f4ng th\u01b0\u1eddng l\u00e0 30 khung h\u00ecnh\/gi\u00e2y, m\u1ed7i gi\u00e2y c\u1ee7a video HD s\u1ebd chi\u1ebfm 248.832.000 byte (~249 MB).<\/li>\n<li>M\u1ed9t ph\u00fat video HD s\u1ebd c\u1ea7n 14,93 GB dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef.<\/li>\n<li>M\u1ed9t h\u1ed9i ngh\u1ecb video d\u00e0i 30 ph\u00fat kh\u00e1 \u0111i\u1ec3n h\u00ecnh s\u1ebd c\u1ea7n kho\u1ea3ng 447,9 GB dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef v\u00e0 m\u1ed9t b\u1ed9 phim d\u00e0i 2 gi\u1edd s\u1ebd chi\u1ebfm g\u1ea7n 1,79 TB (t\u1ee9c l\u00e0 1790 GB).<\/li>\n<\/ul>\n<figure id=\"attachment_275699\" aria-describedby=\"caption-attachment-275699\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-9.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-9-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-9-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"wp-image-275699 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-9.jpg\" alt=\"codec-9\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-9.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-9-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-9-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275699\" class=\"wp-caption-text\">Vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc t\u1ec7p n\u00e0y cho ph\u00e9p s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean l\u01b0u tr\u1eef hi\u1ec7u qu\u1ea3 h\u01a1n<\/figcaption><\/figure>\n<p>Vi\u1ec7c gi\u1ea3m k\u00edch th\u01b0\u1edbc t\u1ec7p n\u00e0y cho ph\u00e9p s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean l\u01b0u tr\u1eef hi\u1ec7u qu\u1ea3 h\u01a1n. N\u00f3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng l\u01b0u tr\u1eef nhi\u1ec1u t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n h\u01a1n tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a h\u1ecd.\u00a0Nh\u00ecn chung, Codec h\u1ed7 tr\u1ee3 l\u01b0u tr\u1eef v\u00e0 chia s\u1ebb c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n l\u1edbn hi\u1ec7u qu\u1ea3 h\u01a1n. T\u1eeb \u0111\u00f3 n\u00f3 n\u00e2ng cao kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng v\u00e0 t\u1ea1o n\u1ed9i dung k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<h2>Codec ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<p>Ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a ch\u00fang l\u00e0 chuy\u1ec3n \u0111\u1ed5i v\u00e0 \u0111\u00f3ng g\u00f3i d\u1eef li\u1ec7u \u0111\u1ec3 truy\u1ec1n qua m\u1ea1ng. C\u1ea3 Codec \u00e2m thanh v\u00e0 video \u0111\u1ec1u s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n ph\u1ea7n m\u1ec1m ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ed9 x\u1eed l\u00fd ti\u00eau chu\u1ea9n ho\u1eb7c tr\u00ean ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c \u0111\u00f3ng g\u00f3i v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u. H\u1ea7u h\u1ebft smartphone \u0111\u1ec1u \u0111\u01b0\u1ee3c trang b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 h\u1ed7 tr\u1ee3 codec video.<\/p>\n<p>Codec d\u1ef1 \u0111o\u00e1n s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u th\u00e0nh m\u1ed9t chu\u1ed7i byte. Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u00e0y t\u1ea1o \u0111i\u1ec1u ki\u1ec7n d\u1ec5 d\u00e0ng truy\u1ec1n d\u1eef li\u1ec7u qua m\u1ea1ng. Chu\u1ed7i byte sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i tr\u1edf l\u1ea1i th\u00e0nh gi\u1ecdng n\u00f3i ho\u1eb7c video \u1edf \u0111i\u1ec3m cu\u1ed1i \u0111\u1ec3 ti\u1ebfp nh\u1eadn. C\u00e1c t\u1ec7p \u0111a ph\u01b0\u01a1ng ti\u1ec7n th\u01b0\u1eddng ch\u1ee9a c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u kh\u00e1c nhau. C\u00e1c lu\u1ed3ng n\u00e0y \u0111\u01b0\u1ee3c g\u00f3i g\u1ecdn l\u1ea1i b\u1eb1ng codec. V\u00ed d\u1ee5: m\u1ed9t t\u1ec7p \u0111a ph\u01b0\u01a1ng ti\u1ec7n ch\u1ee9a c\u1ea3 \u00e2m thanh v\u00e0 video s\u1ebd c\u00f3 hai lu\u1ed3ng d\u1eef li\u1ec7u kh\u00e1c nhau n\u00e0y \u0111\u01b0\u1ee3c ch\u00fang g\u00f3i g\u1ecdn l\u1ea1i v\u1edbi nhau.<\/p>\n<figure id=\"attachment_275693\" aria-describedby=\"caption-attachment-275693\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-275693 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-4.jpg\" alt=\"codec-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275693\" class=\"wp-caption-text\">Codec d\u1ef1 \u0111o\u00e1n s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u th\u00e0nh m\u1ed9t chu\u1ed7i byte<\/figcaption><\/figure>\n<p>M\u1ee9c \u0111\u1ed9 n\u00e9n t\u1ef7 l\u1ec7 ngh\u1ecbch v\u1edbi t\u1ed1c \u0111\u1ed9 bit. N\u00f3i c\u00e1ch kh\u00e1c, t\u1ed1c \u0111\u1ed9 bit c\u00e0ng cao th\u00ec \u0111\u1ed9 n\u00e9n c\u00e0ng \u00edt. Do \u0111\u00f3, vi\u1ec7c n\u00e9n \u00edt h\u01a1n th\u01b0\u1eddng mang l\u1ea1i ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng g\u1ea7n v\u1edbi b\u1ea3n g\u1ed1c h\u01a1n. C\u00f3 nhi\u1ec1u lo\u1ea1i codec kh\u00e1c nhau, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang. M\u1ed9t s\u1ed1 codec t\u1ea1o ra c\u00e1c t\u1ec7p nh\u1ecf h\u01a1n v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c. Nh\u01b0ng nh\u1eefng t\u1ec7p n\u00e0y kh\u00f3 ch\u1ec9nh s\u1eeda h\u01a1n. C\u00e1c codec kh\u00e1c t\u1ea1o ra c\u00e1c t\u1ec7p hi\u1ec7u qu\u1ea3 c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n nh\u01b0ng chi\u1ebfm nhi\u1ec1u dung l\u01b0\u1ee3ng h\u01a1n.<\/p>\n<div class=\"content\">\n<div class=\"ac-container ac-adaptiveCard\">\n<h2 class=\"ac-textBlock\">S\u1ef1 kh\u00e1c nhau gi\u1eefa Codec v\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1eadp tin<\/h2>\n<\/div>\n<\/div>\n<p>Hai th\u00e0nh ph\u1ea7n ch\u00ednh \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh truy\u1ec1n ph\u00e1t video: codec v\u00e0 \u0111\u1ecbnh d\u1ea1ng v\u00f9ng ch\u1ee9a. Ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t v\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft theo c\u00e1ch ri\u00eang c\u1ee7a ch\u00fang.<\/p>\n<p>M\u1ed9t codec ch\u1ecbu tr\u00e1ch nhi\u1ec7m m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1. N\u00f3 s\u1ebd n\u00e9n d\u1eef li\u1ec7u video th\u00f4 th\u00e0nh k\u00edch th\u01b0\u1edbc d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n \u0111\u1ec3 truy\u1ec1n ho\u1eb7c l\u01b0u tr\u1eef. Sau \u0111\u00f3 gi\u1ea3i n\u00e9n \u0111\u1ec3 ph\u00e1t l\u1ea1i ho\u1eb7c ch\u1ec9nh s\u1eeda. Qu\u00e1 tr\u00ecnh n\u00e9n v\u00e0 gi\u1ea3i n\u00e9n n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 truy\u1ec1n ph\u00e1t file hi\u1ec7u qu\u1ea3. N\u00f3 cho ph\u00e9p truy\u1ec1n c\u00e1c t\u1ec7p l\u1edbn qua c\u00e1c m\u1ea1ng c\u00f3 b\u0103ng th\u00f4ng h\u1ea1n ch\u1ebf.<\/p>\n<p>M\u1eb7t kh\u00e1c, \u0111\u1ecbnh d\u1ea1ng v\u00f9ng ch\u1ee9a \u0111\u00f3ng vai tr\u00f2 l\u00e0 g\u00f3i ho\u1eb7c tr\u00ecnh bao b\u1ecdc cho c\u00e1c t\u1ec7p k\u1ef9 thu\u1eadt s\u1ed1. N\u00f3 ch\u1ee9a t\u1ea5t c\u1ea3 si\u00eau d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft c\u1ee7a t\u1ec7p k\u1ef9 thu\u1eadt s\u1ed1. Bao g\u1ed3m codec \u00e2m thanh, codec video v\u00e0 ph\u1ee5 \u0111\u1ec1 chi ti\u1ebft. Si\u00eau d\u1eef li\u1ec7u n\u00e0y cung c\u1ea5p th\u00f4ng tin v\u1ec1 n\u1ed9i dung c\u1ee7a t\u1ec7p v\u00e0 c\u00e1ch ph\u00e1t l\u1ea1i t\u1ec7p \u0111\u00f3. \u0110\u1ecbnh d\u1ea1ng v\u00f9ng ch\u1ee9a \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau c\u1ee7a t\u1ec7p \u0111a ph\u01b0\u01a1ng ti\u1ec7n. Ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111o\u1ea1n \u00e2m thanh, \u0111o\u1ea1n video v\u00e0 ph\u1ee5 \u0111\u1ec1 \u0111\u01b0\u1ee3c gi\u1eef c\u00f9ng nhau v\u00e0 \u0111\u1ed3ng b\u1ed9 h\u00f3a trong khi ph\u00e1t l\u1ea1i.<\/p>\n<figure id=\"attachment_275694\" aria-describedby=\"caption-attachment-275694\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-275694 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-5.jpg\" alt=\"codec-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275694\" class=\"wp-caption-text\">S\u1ef1 kh\u00e1c nhau gi\u1eefa Codec v\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1eadp tin<\/figcaption><\/figure>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 v\u1ec1 c\u00e1c \u0111\u1ecbnh d\u1ea1ng v\u00f9ng ch\u1ee9a ph\u1ed5 bi\u1ebfn:<\/p>\n<table width=\"100%\">\n<thead>\n<tr>\n<td width=\"50%\"><strong>Audio<\/strong><\/td>\n<td width=\"49%\"><strong>Video<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td width=\"50%\">FLAC<\/td>\n<td width=\"49%\">MP4<\/td>\n<\/tr>\n<tr>\n<td width=\"50%\">AAC<\/td>\n<td width=\"49%\">MOV<\/td>\n<\/tr>\n<tr>\n<td width=\"50%\">MP3<\/td>\n<td width=\"49%\">FLV<\/td>\n<\/tr>\n<tr>\n<td width=\"50%\">WAV<\/td>\n<td width=\"49%\">WMV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Ph\u00e2n lo\u1ea1i \u0111\u1ecbnh d\u1ea1ng Codec ch\u00ednh<\/h2>\n<p>Codec, r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n d\u1ef1a tr\u00ean \u00e2m thanh. N\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh lossy v\u00e0 lossless, d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng n\u00e9n hay gi\u1ea3i n\u00e9n d\u1eef li\u1ec7u.<\/p>\n<ul>\n<li>Lossy codec \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a kh\u1ea3 n\u0103ng n\u00e9n b\u1eb1ng c\u00e1ch gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a t\u1ec7p. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u1ea3m thi\u1ec3u b\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft \u0111\u1ec3 truy\u1ec1n t\u1ea3i ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng. C\u00e1c codec b\u1ecb t\u1ed5n hao ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ch\u1ec9 thu th\u1eadp m\u1ed9t ph\u1ea7n d\u1eef li\u1ec7u m\u00e0 thu\u1eadt to\u00e1n d\u1ef1 \u0111o\u00e1n y\u00eau c\u1ea7u. N\u00f3 t\u1ea1o ra b\u1ea3n sao c\u1ee7a d\u1eef li\u1ec7u gi\u1ecdng n\u00f3i ho\u1eb7c video g\u1ed1c g\u1ea7n gi\u1ed1ng nhau. K\u1ebft qu\u1ea3 l\u00e0 k\u00edch th\u01b0\u1edbc t\u1ec7p c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd \u0111\u01b0\u1ee3c v\u00e0 r\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 truy\u1ec1n qua Internet.<\/li>\n<li>M\u1eb7t kh\u00e1c, lossless codec s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n n\u00e9n d\u1eef li\u1ec7u cho ph\u00e9p n\u00e9n. Ch\u00fang gi\u1ea3i n\u00e9n c\u00e1c t\u1ec7p m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng. \u0110i\u1ec1u n\u00e0y \u0111\u1ec3 duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng ban \u0111\u1ea7u c\u1ee7a t\u1eadp tin. C\u00e1c codec kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u thu th\u1eadp, truy\u1ec1n t\u1ea3i v\u00e0 gi\u1ea3i m\u00e3 t\u1ea5t c\u1ea3 th\u00f4ng tin \u00e2m thanh v\u00e0 video. D\u00f9 v\u1eady n\u00f3 y\u00eau c\u1ea7u b\u0103ng th\u00f4ng cao h\u01a1n. Lo\u1ea1i n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 ch\u1ec9nh s\u1eeda phim, video v\u00e0 \u1ea3nh. Trong \u0111\u00f3 vi\u1ec7c duy tr\u00ec ch\u1ea5t l\u01b0\u1ee3ng g\u1ed1c l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng.<\/li>\n<\/ul>\n<figure id=\"attachment_275695\" aria-describedby=\"caption-attachment-275695\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-6.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-6-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-6-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-275695 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-6.jpg\" alt=\"codec-6\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-6.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-6-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-6-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275695\" class=\"wp-caption-text\">Lossy v\u00e0 Lossless<\/figcaption><\/figure>\n<p>H\u01a1n n\u1eefa, n\u00e9n Lossy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c k\u1ef9 thu\u1eadt kh\u00e1c nhau. N\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u00e9n intraframe v\u00e0 interframe.<\/p>\n<ul>\n<li>N\u00e9n Intraframe ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 n\u00e9n \u1ea3nh t\u0129nh trong video. N\u00f3 n\u00e9n t\u1eebng khung h\u00ecnh m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp m\u00e0 kh\u00f4ng tham chi\u1ebfu \u0111\u1ebfn b\u1ea5t k\u1ef3 khung h\u00ecnh n\u00e0o kh\u00e1c.<\/li>\n<li>Ng\u01b0\u1ee3c l\u1ea1i, N\u00e9n Interframe n\u00e9n c\u00e1c t\u1ec7p video b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh ph\u1ea7n d\u01b0 th\u1eeba gi\u1eefa c\u00e1c khung. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt m\u00e3 h\u00f3a ch\u1ec9 gi\u1eef l\u1ea1i th\u00f4ng tin thay \u0111\u1ed5i gi\u1eefa c\u00e1c khung.<\/li>\n<\/ul>\n<p>M\u1eb7c d\u00f9 Intraframe c\u00f3 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u cao h\u01a1n so v\u1edbi Interframe. Tuy nhi\u00ean ch\u00fang y\u00eau c\u1ea7u \u00edt n\u0103ng l\u01b0\u1ee3ng t\u00ednh to\u00e1n h\u01a1n \u0111\u1ec3 gi\u1ea3i m\u00e3 trong khi ph\u00e1t l\u1ea1i.<\/p>\n<h2>Audio codec v\u00e0 video codec<\/h2>\n<p>Audio codec l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh n\u00e9n d\u1eef li\u1ec7u \u0111\u1ec3 c\u00f3 th\u1ec3 truy\u1ec1n \u0111i. Sau \u0111\u00f3 n\u00f3 gi\u1ea3i n\u00e9n d\u1eef li\u1ec7u nh\u1eadn \u0111\u01b0\u1ee3c. Codec \u0111\u1ea3m nhi\u1ec7m vi\u1ec7c m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 c\u00e1c t\u1ec7p \u00e2m thanh RAW. Ri\u00eang Video codec l\u00e0 m\u1ed9t ph\u1ea7n m\u1ec1m n\u00e9n v\u00e0 gi\u1ea3i n\u00e9n video k\u1ef9 thu\u1eadt s\u1ed1. N\u00f3 l\u1ea5y video kh\u00f4ng n\u00e9n v\u00e0 chuy\u1ec3n \u0111\u1ed5i n\u00f3 sang \u0111\u1ecbnh d\u1ea1ng n\u00e9n. Do \u0111\u00f3 n\u00f3 chi\u1ebfm \u00edt dung l\u01b0\u1ee3ng h\u01a1n tr\u00ean \u1ed5 c\u1ee9ng c\u1ee7a b\u1ea1n.<\/p>\n<h3>M\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng audio Codec ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh<\/h3>\n<p>Ngay c\u1ea3 khi c\u1ed1 g\u1eafng \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh v\u1eeba ph\u1ea3i v\u1edbi tr\u1ea3i nghi\u1ec7m \u00e2m thanh n\u1ed5i c\u00f3 \u0111\u1ed9 trung th\u1ef1c cao, v\u1eabn c\u1ea7n m\u1ed9t l\u01b0\u1ee3ng kh\u00f4ng gian l\u01b0u tr\u1eef \u0111\u00e1ng k\u1ec3. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n web c\u00f2n quan t\u00e2m h\u01a1n b\u0103ng th\u00f4ng m\u1ea1ng c\u1ea7n thi\u1ebft \u0111\u1ec3 truy\u1ec1n \u00e2m thanh. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a v\u00e0 gi\u1ea3i m\u00e3 d\u1eef li\u1ec7u \u00e2m thanh n\u00e0y \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 codec \u00e2m thanh. Vi\u1ebft t\u1eaft c\u1ee7a n\u00f3 l\u00e0 CODEr\/DECoder.<\/p>\n<p>Danh s\u00e1ch b\u00ean d\u01b0\u1edbi bi\u1ec3u th\u1ecb c\u00e1c codec \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"62%\"><strong>\u0110\u1ecbnh d\u1ea1ng h\u1ed7 tr\u1ee3 \u0111\u1ea7u v\u00e0o<\/strong><\/td>\n<td width=\"37%\"><strong>T\u00ean Codec h\u1ed7 tr\u1ee3<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">ASF,\u00a0WMA,\u00a0WMV (Advanced Systems Format)<\/td>\n<td width=\"37%\">WMA<\/p>\n<p>WMA2<\/p>\n<p>WMA Pro<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">FLAC (Free Lossless Audio Codec)<\/td>\n<td width=\"37%\">FLAC<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">Matroska<\/td>\n<td width=\"37%\">FLAC<\/p>\n<p>Opus<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">MOV (Apple QuickTime)<\/td>\n<td width=\"37%\">PCM<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">MP3 (MPEG-1 Layer 3)<\/td>\n<td width=\"37%\">MP3<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">MP4 (MPEG-4)<\/td>\n<td width=\"37%\">AAC<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">MPEG-TS (MPEG-2 Transport Stream)<\/td>\n<td width=\"37%\">MPEG-2<\/p>\n<p>PCM<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">OGG,\u00a0OGA<\/td>\n<td width=\"37%\">FLAC<\/p>\n<p>Opus<\/p>\n<p>Vorbis<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">WAV<\/td>\n<td width=\"37%\">PCM<\/td>\n<\/tr>\n<tr>\n<td width=\"62%\">Kh\u00f4ng c\u00f3 \u0111\u1ecbnh d\u1ea1ng<\/td>\n<td width=\"37%\">AAC<\/p>\n<p>Dolby Digital (AC3)<\/p>\n<p>Dolby Digital Plus (EAC3)<\/p>\n<p>FLAC<\/p>\n<p>PCM<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ecbnh d\u1ea1ng h\u1ed7 tr\u1ee3 \u0111\u1ea7u ra<\/strong><\/td>\n<td>\u00a0<strong>T\u00ean Codec h\u1ed7 tr\u1ee3<\/strong><\/td>\n<\/tr>\n<tr>\n<td>DASH (Dynamic Adaptive Streaming over HTTP)<\/td>\n<td>AAC<\/p>\n<p>Dolby Digital (AC3)<\/p>\n<p>Dolby Digital Plus (EAC3)<\/p>\n<p>Dolby Digital Plus JOC (Atmos)<\/td>\n<\/tr>\n<tr>\n<td>HLS (Apple HTTP Live Streaming)<\/td>\n<td>AAC<\/p>\n<p>Dolby Digital (AC3)<\/td>\n<\/tr>\n<tr>\n<td>MP4 (MPEG-4)<\/td>\n<td>AAC<\/p>\n<p>Dolby Digital (AC3)<\/p>\n<p>Dolby Digital Plus (EAC3)<\/td>\n<\/tr>\n<tr>\n<td>MPEG-TS (MPEG-2 Transport Stream)<\/td>\n<td>AAC<\/p>\n<p>Dolby Digital (AC3)<\/p>\n<p>Dolby Digital Plus (EAC3)<\/p>\n<p>MPEG-2<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng c\u00f3 \u0111\u1ecbnh d\u1ea1ng<\/td>\n<td>AAC<\/p>\n<p>AIFF<\/p>\n<p>Dolby Digital (AC3)<\/p>\n<p>Dolby Digital Plus (EAC3)<\/p>\n<p>FLAC<\/p>\n<p>MPEG-2<\/p>\n<p>MP3<\/p>\n<p>WAV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_275696\" aria-describedby=\"caption-attachment-275696\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-7.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-7-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-7-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-275696 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-7.jpg\" alt=\"codec-7\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-7.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-7-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-7-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275696\" class=\"wp-caption-text\">M\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng audio Codec ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh<\/figcaption><\/figure>\n<h3>M\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng video Codec ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh<\/h3>\n<p>B\u1ed1i c\u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a Internet c\u00f3 nhi\u1ec1u lo\u1ea1i codec. C\u00e1c codec n\u00e0y, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean web. M\u1ed7i codec c\u00f3 b\u1ed9 t\u00ednh n\u0103ng v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ri\u00eang, gi\u00fap n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n c\u1ee5 th\u1ec3. \u0110\u1ed1i v\u1edbi m\u1ed7i codec, c\u00f3 m\u1ed9t s\u1ed1 v\u00f9ng ch\u1ee9a ho\u1eb7c lo\u1ea1i t\u1ec7p nh\u1ea5t \u0111\u1ecbnh t\u01b0\u01a1ng th\u00edch v\u1edbi ch\u00fang. C\u00e1c v\u00f9ng ch\u1ee9a n\u00e0y \u0111\u00f3ng g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1edfi codec. N\u00f3 cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 truy\u1ec1n \u0111i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa n\u00f3 v\u00e0 v\u00f9ng ch\u1ee9a r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ph\u00e1t l\u1ea1i th\u00e0nh c\u00f4ng t\u1ec7p ph\u01b0\u01a1ng ti\u1ec7n.<\/p>\n<p>M\u1ed7i codec \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea \u1edf \u0111\u00e2y \u0111\u1ec1u c\u00f3 k\u00e8m theo m\u1ed9t li\u00ean k\u1ebft d\u1eabn \u0111\u1ebfn ph\u1ea7n chi ti\u1ebft h\u01a1n b\u00ean d\u01b0\u1edbi. Ph\u1ea7n n\u00e0y cung c\u1ea5p th\u00f4ng tin to\u00e0n di\u1ec7n. N\u00f3 bao g\u1ed3m c\u00e1c kh\u1ea3 n\u0103ng c\u1ee5 th\u1ec3 c\u1ee7a n\u00f3 v\u00e0 m\u1ecdi v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch ti\u1ec1m \u1ea9n m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u1ea7n bi\u1ebft.<\/p>\n<div class=\"content\">\n<div class=\"ac-container ac-adaptiveCard\">\n<div class=\"ac-textBlock\">\n<table width=\"100%\">\n<thead>\n<tr>\n<td width=\"26%\"><strong>T\u00ean Codec<\/strong><\/td>\n<td width=\"40%\"><strong>T\u00ean Codec vi\u1ebft \u0111\u1ea7y \u0111\u1ee7<\/strong><\/td>\n<td width=\"31%\"><strong>\u0110\u1ecbnh d\u1ea1ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td width=\"26%\">AV1<\/td>\n<td width=\"40%\">AOMedia Video 1<\/td>\n<td width=\"31%\">MP4, WebM<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">AVC (H.264)<\/td>\n<td width=\"40%\">Advanced Video Coding<\/td>\n<td width=\"31%\">3GP, MP4<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">H.263<\/td>\n<td width=\"40%\">H.263 Video<\/td>\n<td width=\"31%\">3GP<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">HEVC (H.265)<\/td>\n<td width=\"40%\">High Efficiency Video Coding<\/td>\n<td width=\"31%\">MP4<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">MP4V-ES<\/td>\n<td width=\"40%\">MPEG-4 Video Elemental Stream<\/td>\n<td width=\"31%\">3GP, MP4<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">MPEG-1<\/td>\n<td width=\"40%\">MPEG-1 Part 2 Visual<\/td>\n<td width=\"31%\">MPEG, QuickTime<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">MPEG-2<\/td>\n<td width=\"40%\">MPEG-2 Part 2 Visual<\/td>\n<td width=\"31%\">MP4, MPEG, QuickTime<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">Theora<\/td>\n<td width=\"40%\">Theora<\/td>\n<td width=\"31%\">Ogg<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">VP8<\/td>\n<td width=\"40%\">Video Processor 8<\/td>\n<td width=\"31%\">3GP, Ogg, WebM<\/td>\n<\/tr>\n<tr>\n<td width=\"26%\">VP9<\/td>\n<td width=\"40%\">Video Processor 9<\/td>\n<td width=\"31%\">MP4, Ogg, WebM<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<figure id=\"attachment_275697\" aria-describedby=\"caption-attachment-275697\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-8.jpeg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-8-300x169.jpeg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/10\/codec-8-768x432.jpeg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-275697 size-full webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-8.jpeg\" alt=\"codec-8\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-8.jpeg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-8-300x169.jpeg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/10\/codec-8-768x432.jpeg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><figcaption id=\"caption-attachment-275697\" class=\"wp-caption-text\">M\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng video Codec ph\u1ed5 bi\u1ebfn tr\u00ean m\u00e1y t\u00ednh<\/figcaption><\/figure>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 nh\u1eefng th\u00f4ng tin c\u01a1 b\u1ea3n v\u1ec1 codec v\u00e0 ph\u00e2n lo\u1ea1i, t\u1ea7m quan tr\u1ecdng c\u1ee7a ch\u00fang. Hy v\u1ecdng nh\u1eefng th\u00f4ng tin tr\u00ean s\u1ebd gi\u00fap b\u1ea1n c\u00f3 nhi\u1ec1u ki\u1ebfn th\u1ee9c h\u1eefu \u00edch h\u01a1n v\u1ec1 ph\u1ea7n m\u1ec1m n\u00e0y. Kh\u00e1m ph\u00e1 th\u00eam c\u00e1c m\u1eb9o c\u00f4ng ngh\u1ec7 kh\u00e1c t\u1ea1i \u0111\u00e2y.<\/p>\n<ul>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/tach-nhac-tu-video\/\"><strong>C\u00e1ch t\u00e1ch nh\u1ea1c ra kh\u1ecfi video kh\u00f4ng l\u00e0m m\u1ea5t ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh<\/strong> <\/a><\/li>\n<li><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/cach-chinh-loa-keo-keo\/\"><strong>C\u00e1ch ch\u1ec9nh \u00e2m thanh loa k\u00e9o \u0111\u1ec3 h\u00e1t karaoke hay nh\u1ea5t trong v\u00e0i n\u1ed1t nh\u1ea1c<\/strong>\u00a0<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Thu\u1eadt ng\u1eef &#8220;codec&#8221; xu\u1ea5t hi\u1ec7n r\u1ea5t nhi\u1ec1u. \u0110\u1eb7c bi\u1ec7t khi n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 t\u1ea3 c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u00e2m thanh v\u00e0 video, c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt n\u00e9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m cho t\u1ec7p nh\u1ecf h\u01a1n. Tuy nhi\u00ean thu\u1eadt ng\u1eef n\u00e0y c\u00f3 ngh\u0129a l\u00e0 g\u00ec v\u00e0 n\u00f3 \u0111\u1ebfn t\u1eeb \u0111\u00e2u? H\u00e3y c\u00f9ng [&hellip;]<\/p>\n","protected":false},"author":48,"featured_media":275689,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,412],"tags":[],"class_list":["post-274378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thu-thuat","category-thu-thuat-may-tinh"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Codec l\u00e0 g\u00ec? C\u00f3 quan tr\u1ecdng kh\u00f4ng? 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