FLV → AVI

Haa, waana kor u qaadid dhab ah oo ka badan FLV. AVI waxay u dhaqmaan dhammaan qulqulka maqalka sida waddo heerka koowaad, sidaas darteed isku darka afka asalka ah, dub iyo faallooyinka agaasimaha waxay ku noolaan karaan faylka mid ka mid ah ciyaaryahanka dhexdooda. AVI waa trivially fudud, taas oo si dhab ah sababta camcorders hore, kaarka qabashada, DVD ripping qalab iyo Windows-era software dhammaan weli soo saaraan.

Marka kaliya haddii qayb gaar ah oo qalab ah u baahan yahay in la gaaro. Labada qaabab ka yimaadaan isla hore-H.264 era, sidaas daraaddeed midna ma soo celin iibsato waxtarka, tayada ama mustaqbalka-proofing - wuxuu iibsadaa la jaanqaad la mid ah qalab gaar ah. Haddii ay tahay in la ilaaliyo muuqaalada isticmaalka dheer, u beddelaan in ay badeecad hadda ka hor inta aan sideways. No browser hadda, telefoonka ama TV ciyaari kartaa FLV - wax kasta oo weli ku jira badeecadaan waa in la istaagay ka baxsan si ay u sii watchable. AVI ma taageero asalka ah ee codecs casriga ah, xawaaraha frame kala duwan, subtitles fudud ama faylasha ka badan 4 GB aan hacks, iyo per-chunk overhead bloats faylka.

Haa - dhammaan raadadka maqalka ee FLV (faahfaahinta agaasimaha, luqadaha kale, maqalka qeexaya) waxaa lagu kaydiyaa AVI markay tahay in la gaaro in lagu taageero maqalka badan. MKV iyo MOV waxay xakameeyaan raadadka maqalka aan xadidnayn; MP4 waxay taageertaa in badan laakiin ciyaartoyda qaar ee qalabka waxay uun arkaan raadadka 1; WebM waxaa lagu xaddiday hal Opus / Vorbis raad. AVI waa Microsoft Audio Video Interleave, soo bandhigay 1992 korka RIFF chunk format - mid ka mid ah baakadaha ugu da'da weyn weli ku wareegsan.

Subtitles soft (waxyaabaha la dooran karo) noolaadaan marka AVI ay qaadi karaan: MKV leeyahay SRT, ASS, SSA, PGS, VobSub natively; MP4 kaliya leedahay mov_text (a qaabka la jaray-hoos). MKV la ASS styled subs in MP4 si caadi ah u hoos u dhigi doonaa iyaga mov_text ama iyaga ku gubi. Hardsubs (ku gubay video) qaadi ka badan ha ahaato.

Qaybta metadata wareejinta u dhexeeya FLV iyo AVI markasta oo labada baabuurta taageeraan qayb atom (MKV, MP4, MOV). WebM kaydiyaa qaybaha block Matroska-la jaanqaadayo, sidaas darteed MKV <-> WebM qaybaha round-trip nadiif ah. AVI ma laha qayb spec, sidaas oo kale AVI u beddelo AVI soo saartaa file unchaptered haddii aadan ku darin calaamadaha gacanta.

MKV waa keydka kaliya ee keydsan ee kaydiya faylasha la xidhiidha (fonts TTF ee ASS subs, JPG cover art, PDF-faahfaahin lagu turjumay). FLV ilaa AVI ayaa ka soo baxa waxyaabaha la xidhiidha marka AVI uusan ahayn MKV - qulqulka hoose ee la beddelo, laakiin culeyska la xidhiidha ayaa ku sii jira asalka. Ku hay FLV sida kaydinta haddii aad ku tiirsan tahay fonts la xidhiidha.

Codec default waxaa la doortay si ay u meeleeyaan AVI container conservatively: MKV defaults in H.265 (HEVC) si ay u hagaajiyaan cidhiidhiga; MP4 defaults in H.264 si ay u taageeraan qalabka ugu ballaaran; WebM defaults in VP9; AVI isticmaalaa MPEG-4 ASP (DivX / Xvid xayawaanka).

Macluumaadka meta HDR (HDR10 heerka muujinta heerka, heerka iftiinka waxyaabaha ugu badan) wuxuu ku socdaa AVI marka labadaba baakadaha iyo codec-ka la doortay ay taageeraan (HEVC, AV1 MKV / MP4). Dolby Vision waa mid ka sii daciifsan - DV profile 5 / 7 / 8.1 in FLV badanaa wuxuu ku nool yahay MKV oo leh HEVC; u beddelashada AVI baakadaha aan lahayn daboolka DV wuxuu ku dhejiyaa HDR10.

MKV iyo WebM waxay diiwaangeliyaan taariikhda saxda ah ee per-frame iyo VFR-ka si dabiici ah, sidaas darteed FLV VFR wuxuu ku nool yahay AVI qaababkan oo aan la soo celin karin. MP4 magac ahaan wuxuu ku kaydiyaa taariikhda sidoo kale laakiin ciyaartoyda qaar waxay aaminsan yihiin CFR; soo saaraha ayaa muujinaya "force CFR" toggle oo dib u soo celin kara VFR FLV ilaa 24 / 30 / 60 fps AVI si loo gaaro ujeeddo dhibaato leh.

Same-codec remux soo saartaa mid aad u mid ah (container overhead kala duwan yahay by 0.1-2%). Codsiga isbedelka waxaa laga yaabaa in ay u wareegaan oo dhan by 50% ama ka badan: H.264 in H.265 caadi ahaan hal-halka file at quality muuqaalka la mid ah; H.264 in AV1 hal-halka mar kale on a slow preset. Going ka high-bitrate FLV (Blu-ray rip) in low-bitrate AVI (web upload) waa sababta ugu badan ee caadiga ah ee hoos u dhac weyn.

Haa ilaa 8K (7680x4320) on Premium. Qaab bilaash ah oo 4K (3840x2160) ilaa 1 GB faylka ah. Remuxes-ka daahirka ah (xawaaraha isku midka ah) ee FLV weyn ee AVI waxaa xaddidaya disk I / O, maahan CPU - 30 GB FLV caadi ahaan remuxes ilaa AVI daqiiqad ka dib iyadoon loo eegin xallinta.