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Test : max bitrate a cui youtube comprime i video : TUTORIAL Sofware ed Editing Video

Test : max bitrate a cui youtube comprime i video

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Test : max bitrate a cui youtube comprime i video

Messaggioda Archetipo » 01/11/2014, 11:06

Test effettuato a varie risoluzioni.Ecco a quali bitrate comprime youtube.

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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda xandreasx » 01/11/2014, 18:09

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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda WestLele » 01/11/2014, 18:21

Aspettiamo i video allora


Inviato dal mio Nokia 3310
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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda Max Tod » 01/11/2014, 18:55

60 giorni per fare un upload... w l'Italia
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Immagine

se ti ho aiutato dammi un like no? :P
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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda Archetipo » 09/11/2014, 23:08

Ciao xandreasx,

a questo post



del mio blog trovi un altro test di un video a 4K a 25mbps e 50mbps inviati su youtube... dove analizzando il frame del video al 200% ho scoperto che NON ci sono differenze di qualità, quindi è inutile inviare video con bitrate altissimi e quindi con conseguente aumento delle dimensioni e tempo di upload.
Ho provato lo stesso test anche con un video in prores con max qualità possibile identico all'originale e la storia non cambia, anche se mandi video a 200mbps alla fine ti troverai sempre un bitrate "bloccato" dai server di youtube.
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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda xandreasx » 09/11/2014, 23:43

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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda Archetipo » 10/11/2014, 2:13

Prima cosa... elimina il rumore nel video... ti consiglio un filtro denoise (su virtualdub msu denoiser che sfrutta la gpu).
Se il video originale è pulito e di qualità allora anche quello codificato sarà migliore.
Per i colori utilizza lo standard BT.709!
Il formato di transcodifica lossless che uso io è l'UT VIDEO CODEC, con quello tutti i software lo leggeranno.
Per migliorare i colori e aumentare la gamma dinamica dai un'occhiata a:



Infine... dipende molto anche dalle impostazioni di codifica x264... se vuoi la massima qualità usa MEGUI o Handbrake e seleziona il preset VERY SLOW.
Il video di Rialto presente nel post è stato codificato con MEGUI 2058.. che reputo la migliore GUI per il codec x264.
Per i video in 4K io uso : Video Enhancer per portare i video a risoluzioni inferiori a 4K, esporto in UT 709 lossless, poi apro in virtualdub, trimmo i secondi che mi interessano, applico i filtri, esporto ancora in UT VIDEO CODEC 709, apro in MEGUI e codifico in x264... ho un I7 con 32GB di ram...
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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda xandreasx » 10/11/2014, 14:42

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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda Archetipo » 10/11/2014, 22:51

Uso diversi software per il montaggio.. da Premiere o After Effects con i vari filtri a Vegas (in particolare lo stabilizer).
Ma alla fine NON codifico praticamente mai con quelli, di solito salvo sempre tutto con un codec lossless (Lagarith prima UT ora) e poi vado di MEGUI oppure Sorenson Squeeze nel caso del VP9 che purtroppo è di una lentezza esasperante anche su un I7 con 32GB di ram e una geforce con i CUDA (che tanto non utilizza).
Premiere utilizza il Mainconcept H264 che fino a qualche anno fa rappresentava il top, ora il codec x264 open source lo ha superato come qualità ed opzioni, se vuoi codificare in x264 in Premiere o con il Media Coder puoi scaricarti la versione per Vfw (video for windows) letto dalla suite Adobe, lo trovi su
Anche se io personalmente esporto in UT 709 420 lossless e poi codifico appunto con MEGUI o Handbrake.
Ti consiglio di usare anche virtualdub e i suoi filtri, velocissimo.
Infine... se hai una reflex Canon (io ho MKII e 6D) l'ottimo 5DToRGB free converte i video MOV in prores DnxHD a 10bit molto + facili da editare con qualunque programma di editing.
Il Cineform della gopro è un altro formidabile codec da utilizzare peccato che non sia letto da virtualdub o il sorenson..
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Re: Test : max bitrate a cui youtube comprime i video

Messaggioda xandreasx » 10/11/2014, 23:44

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