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Dubbi Export Video : GoPro HERO5 Black

Dubbi Export Video

Discussioni, Domande e Risoluzione dei problemi su GoPro HERO5 Black

Dubbi Export Video

Messaggioda MarcoRuna » 12/03/2017, 13:34

Ciao a tutti,

vorrei porvi alcuni quesiti che spero siano interessanti per tutti:

Se registro un video in 4k conviene sempre effettuare l'export in 4k piuttosto che, ad esempio, in 1080p e perdere qualità del video?

Se il mio intento è quello di ottenere un video finale a 1080p, non conviene allora registrarlo direttamente a
1080p e risparmiare quindi spazio sulla scheda sd?

Mi sono venuti dei forti dubbi leggendo l'argomento principale di questa sezione del forum "Risoluzioni Video e Fps nella Gopro ". Ad un certo punto viene detto

"sì, se registri in 4k ed esporti in 1080p il video finale avrà una qualità migliore del 1080p nativo; questo perchè un video in 4k ha una gamma dinamica e un livello di dettaglio di molto superiore che anche in fase di compressione finale manterrà."

Ma non capisco bene cosa intenda per gamma dinamica: se parliamo di dinamica di colore, la gamma colori della macchina non dipende certamente dalla risoluzione (il numero di colori di cui può colorarsi il singolo pixel è fisso); ovviamente, utilizzando una risoluzione maggiore, la texture più fine ti da una resa cromatica complessiva migliore, ma solo se puoi riprodurla! stesso discorso per il dettaglio.
Mi viene da pensare quindi che l'econding in riduzione del contenuto fa meglio della macchina in ripresa, giusto?

ciao e grazie mille per le risposte!
Marco
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Re: Dubbi Export Video

Messaggioda pucciosan » 13/03/2017, 13:08

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