Heluhelu Bitrate Media

For 1080p (1920×1080) video at 30fps, the ideal bitrate typically ranges from 8-12 Mbps for standard content using H.264 encoding. For more dynamic content like sports or action scenes, you might need 12-15 Mbps. When using 60fps, increase these values by approximately 50%. More efficient codecs like H.265/HEVC or AV1 can achieve similar quality at 30-50% lower bitrates. Your specific requirements may vary based on content complexity and target platform.

Bitrate directly determines file size using a simple formula: File Size (MB) = Bitrate (Mbps) × Duration (seconds) ÷ 8. For example, a 10-minute video encoded at 10 Mbps will result in a file approximately 750 MB in size (10 Mbps × 600 seconds ÷ 8). Higher bitrates lead to larger files but also generally improve quality. Finding the optimal balance depends on your quality requirements and storage/bandwidth constraints.

Loaʻa nā koi bitrate ʻokoʻa ma muli o ke kaohi ʻana o ka bandwidth. Pono ka hoʻoheheʻe ʻana i ka hāʻawi manawa maoli, no laila pono e hoʻomau ka bitrate me ka pilina pūnaewele o ka mea nānā e pale aku i ka buffering. Manaʻo ka hapa nui o nā paepae streaming i nā bitrates haʻahaʻa e hōʻoia i ka hiki ke loaʻa i kahi lehulehu ākea. ʻAʻole kaohi ʻia nā ʻike i hoʻoiho ʻia e ka lawe manawa maoli, e ʻae ana i nā bitrates kiʻekiʻe a me ka maikaʻi. Hoʻohui, hana pinepine nā platform streaming i kā lākou transcoding ponoʻī e hana i nā pae kiʻekiʻe he nui, no laila he mea koʻikoʻi ka hāʻawi ʻana i kahi faila kumu kiʻekiʻe inā hiki ke kahe ka mea hoʻohana hope ma ka bitrate haʻahaʻa.

ʻO kēia nā ʻano ʻano hoʻomalu ʻokoʻa e hoʻoholo ai i ka hoʻokaʻawale ʻana o ka bitrate:

• CBR (Pūnaewele Mau): E mālama i ka bitrate like ma ka wikiō holoʻokoʻa, me ka ʻole o ka paʻakikī. He kūpono kēia no ka hoʻoheheʻe ʻana i kahi mea nui ka paʻa ʻana o ka bandwidth akā hiki ke kūpono ʻole no ka ʻike loli.
• VBR (Uku Bit Hoʻololi): Hoʻokaʻawale i nā bitrates kiʻekiʻe i nā hiʻohiʻona paʻakikī a me nā bitrates haʻahaʻa i nā hiʻohiʻona maʻalahi. Hāʻawi kēia i ka maikaʻi ʻoi aku ka maikaʻi ma ka bitrate awelika like me ka CBR, i mea kūpono no ka ʻike i hoʻoiho ʻia.
• CRF (Kumu helu mau): Mālama ʻia ka maikaʻi ma mua o ka bitrate, e ʻae i ka encoder e hoʻohana i nā bitrate e pono ai e mālama i ka pae maikaʻi i ʻōlelo ʻia. He kūpono kēia no ka waihona a me nā kūlana i hoʻokumu mua ʻia ka maikaʻi ma mua o ka wānana nui o ka faila.

No ka hoʻoheheʻe ʻana, ʻōlelo pinepine ʻia ʻo CBR a i ʻole VBR i hoʻopaʻa ʻia. No nā wikiō i hoʻoiho ʻia, hāʻawi pinepine ʻo VBR a i ʻole CRF i ka maikaʻi o ka maikaʻi.

Hāʻawi nā codec hou i nā hoʻomaikaʻi maikaʻi nui ma luna o ka H.264 i hoʻohana nui ʻia:

• H.265/HEVC: Loaʻa i ka maikaʻi like me H.264 ma kahi o 40-50% ka liʻiliʻi liʻiliʻi, akā makemake ʻia ka mana hana hou aʻe e hoʻopaʻa a hoʻololi. Kākoʻo nui ʻia i nā polokalamu hou a kūpono no ka ʻike 4K.
• AV1: ʻOi aku ka maikaʻi ma mua o HEVC, e hāʻawi ana i ka maikaʻi like ma 20-30% haʻahaʻa bitrates ma mua o HEVC (a i ʻole 50-60% haʻahaʻa ma mua o H.264). Eia nō naʻe, ʻoi aku ka ikaika o ka hoʻopili ʻana o AV1 i kēia manawa, ʻoiai ke ulu wikiwiki nei ke kākoʻo decoder.
• VP9: ʻO Google ka mea hoʻokūkū iā HEVC, e hāʻawi ana i nā hoʻomaikaʻi ʻoi aku ka maikaʻi ma mua o H.264 me ke kākoʻo polokalamu kele pūnaewele ʻoi aku ka maikaʻi ma mua o HEVC akā ʻoi aku ka liʻiliʻi o ka wikiwiki o ka lako.

When choosing a codec, consider compatibility with your target devices/platforms, encoding time constraints, and quality/size requirements. H.264 remains the most widely compatible option, while newer codecs offer better efficiency at the cost of compatibility or encoding speed.

Hoʻololi nui ka hoʻonā a me ka bitrate i ka maikaʻi wikiō, akā ʻokoʻa ko lākou koʻikoʻi ma muli o ka pōʻaiapili:

Olelo Hooholo hoʻoholo i ka helu o nā pika i kēlā me kēia kiʻi, e pili ana i nā kiko kikoʻī a me ka ʻoi. Eia nō naʻe, inā haʻahaʻa loa ka bitrate no ka hoʻonā ʻana, e ʻike ʻoe i nā mea hana hoʻoemi e hōʻole i nā pono o ka hoʻonā kiʻekiʻe.

Bitrate e hoʻoholo i ka nui o ka ʻikepili i hoʻohana ʻia no ka hoʻopili ʻana i kēlā me kēia kekona o ka wikiō, e pili pono ana i ka maikaʻi o ka mālama ʻana i nā kikoʻī a me ka neʻe. ʻOi aku ka maikaʻi o ka bitrate kiʻekiʻe ma ka hoʻonā haʻahaʻa ma mua o ka hoʻonā kiʻekiʻe me ka lawa ʻole o ka bitrate.

ʻO ke ala maikaʻi loa ʻo ke kaulike ʻelua e like me kāu ʻike. No nā hiʻohiʻona kikoʻī, paʻakikī, e hoʻokaʻawale i ka bitrate kūpono no kāu hoʻonā koho. No ka maʻiʻo maʻalahi e like me nā hōʻike a i ʻole nā ​​animations, ʻoi aku ka nui o ka hoʻonā ma mua o nā bitrates kiʻekiʻe loa. Paipai kā mākou helu helu i nā hoʻonohonoho kaulike e hoʻopaʻa pono i nā mea ʻelua no kāu ʻano kikoʻī kikoʻī.