Jikelezisa JPEG

Umgcini wesimo se JPEG

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Ukulayisha

Indlela yokujikelezisa JPEG

1 Layisha phezulu i-JPEG images ephuma ngendlela engalungile.

2 Khetha ujikelezo lwesikhashana noma ujikelezo lwesikhashana, noma ubhale i-angle efanele futhi ukhethe umbala wezinhlangothi ezizovela.

3 Sebenzisa ukujikeleza; ama-pixels neflegi yobubanzi bulinganiswe ukuze wonke umbukeli avume ukuthi indlela iphezulu yini.

4 Layisha phezulu ifayela elijikelezayo JPEG.

Jikelezisa JPEG Imibuzo Evame Ukubuzwa

Ingabe kukhona okuthile okukhethekile ku JPEG okufanele ngikwazi?

Yebo — i.jpeg ne.jpg izixhumanisi ziyi-bitstream efanayo, ngakho akukho okuthile lapha okuzosebenza ngokuhlukile ku-.jpg — igama lefayela kuphela elishintshayo. Le yinto echaza ukuthi kungani ifayela libonakale lilungile kuhlelo oluthile futhi lingekho kulunye.

Ingabe ngizojikelezisa iqembu lonke ngasikhathi sinye?

Yebo. Ujikelezo olufanayo lusetshenziswa kuwo wonke amafayela olayishe, okuwusizo olukhulu lokuxazulula ifolda yezinqumo noma ikhamera ephumayo, konke okuvela ngendlela engalungile.

Indlela eJikelezisa JPEG ejikelezisa ngayo ifayela?

Ngokucacile, ukujikeleza ngezinga le-90 degrees kwenziwa ngaphandle kokulahlekelwa ngokufaka ama-blocks we-DCT - akukho uku-code kabusha, akukho ukulahlekelwa kokukhiqiza; i-angle efanele kuphela edinga ukusatshalaliswa kabusha, ngoba i-pixel grid idinga ukuvuselelwa. Izinhlamvu ezingu-4 kanye nezinhlamvu ezingu-5 ziyisibonelo esijwayelekile futhi zithatha indlela elula kakhulu etholakalayo yefomethi.

Ingabe ngizojikelezisa nge-engile ehlukile, hhayi ama-degrees angama-90 kuphela?

Yebo, kepha lezi ezimbili zisebenza ngokuhlukile ngaphansi. Ukuphindaphinda kwamadigri angama-90 kuhlela kabusha idatha ekhona; noma yisiphi isikhala sidinga ukubuyisela i-grid futhi sigcwalise amakhonsoli, ngakho kubiza ukusatshalaliswa futhi kuvame ukudinga umbala wesizinda wokukhetha.

Ingabe Jikelezisa JPEG ibiza noma yini?

No. Jikelezisa JPEG ikhululekile ngaphandle kwe-akhawunti, akukho uphawu lwamanzi ku-output futhi akukho mnyango wokungenisa phambi kokulanda. Ukulayisha kususwa ngokuzenzakalela isikhathi esincane ngemuva komsebenzi ophelile.

Yini engikwazi ukuyifaka ku Jikelezisa JPEG?

Noma yini emndenini we-lossy raster — JPG, JPEG, JFIF ne-WebP — kanye nefomethi engalahleki (PNG, BMP, TIFF) uma ufuna ukuzixhuma ndawonye. Ifomethi ifundwa kusuka kuhele lombhalo ophezulu, hhayi isiqephu, ngakho isithombe esigcinwe nge-suffix engalungile sizoqhubeka sihamba.

Ingabe kunesilinganiselo sobukhulu behele ku Jikelezisa JPEG?

Yebo: ama-akhawunti amahhala asebenza ngezithombe kuze kube yi-25 MB ngayinye, ehlanganisa ngokuyinhloko yonke ikhamera JPG nesithombe sefoni; umsebenzi ukwenziwa yi-libjpeg-turbo ne-libwebp, ama-library afanayo umhleli wedesktop uxhumana nawo. Amafayela amakhulu yizinto ezincane ezizokuvimbela ukungena ku-free level, futhi umkhawulo uhele ngalinye hhayi iqembu ngalinye.

Yini ekwenzeke ku-EXIF nedatha yeprofayili yombala?

Ikhamera EXIF (ISO, i-shutter, i-lens, GPS) neprofayili efakwe ngaphakathi ye-ICC idluliselwa ngokuzenzakalela, ngoba ukushiya iprofayili kwenza umbala ushintshe uma ufaka kabusha. Sebenzisa ukhetho lokufihla ukususa i-metadata ngaphambi kokulayisha uma uhlela ukushicilela ifayela.

Kungani i MP3 site i host Jikelezisa JPEG?

MP3.to ifakwe ngaphansi kwefomethi eyenza umsindo ophathekayo ojwayelekile: odlalayo emhlabeni wonke, omncane ngokwanele ukukhohlwa, nolahlekile ngendlela ebalulekile uma uqhubeka nokuphinda uyikhode. Uhlu lwemisebenzi yomsindo: umuntu ofanayo odinga ifomu elisha uvame ukudinga ihele elicushiwe, elihlanganiswayo noma elincane eqenjini elifanayo. Ukubeka Jikelezisa JPEG ngemuva kokufaka okufanayo, amacaps afanayo ne-akhawunti efanayo yilokho okushintsha ama-tabs amathathu abe eyodwa.

Yini okufanele ngiyenze ngemiphumela uma i Jikelezisa JPEG iqediwe?

Isiguquli kule site sihamba ngesandi phakathi kwe MP3, WAV, FLAC, M4A, OGG ne Opus, ngakho ifomu lokuphuma liyisinqumo ongashiya kuze kube yilapho kuqediwe, hhayi ukuqhubeka ngaleso sikhathi. Ukwenza lokhu ngemuva kwe Jikelezisa JPEG ngaphezu kokungaphambili kusho ukuthi ukukopela kwenziwa kabili, kuhele owaziyo, endaweni yezikhathi ezimbili.

Ingabe Jikelezisa JPEG lapha ithuluzi elifanayo lezindawo ezifanayo ezisebenza?

Ama-engine ahlukaniswe - i-ffmpeg efana ne-build, abasebenza nabo, ama-limits afana. Okushiwo yi-MP3 site kuyinkomba ye-bitrates, mayelana nokuthi yini egcina i-encoding kanye nokuthi yikuphi lapho i-lossless intermediate ifanele uku-upload isikhathi. Kuqala futhi kusuka kuqiniso elinye mayelana nefomethi le site ibizwa ngemuva: Amafreyimu we-MP3 ayizingxenye ezincane eziqinile, ngakho ukucisha kuwela emgwaqweni wefreyimu futhi ama-gapless playback markers angeke aphile uma kuphinde ku-code.

Ngidinga i-akhawunti, futhi yini egcinwa?

Akukho akhawunti, futhi akukho okugcinwa: ukuthunyelwa kususwa abasebenzayo ngemuva komsebenzi ophelile, akukho okumlalela futhi akukho okuhlobene. Ama-akhawunti amahhala akhona ngembali nenani leqembu, hhayi ukufinyelela.