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Registrazione videocamera Phantom3 : DJI Phantom 4, 3 Pro/ADV, 3 Std, 2

Registrazione videocamera Phantom3

Discussioni, Domande e Risoluzione dei problemi su DJI Phantom 4, 3 Pro/ADV, 3 Std, 2

Registrazione videocamera Phantom3

Messaggioda Bianchim74 » 08/12/2015, 17:23

Ciao ragazzi,

una curiosita': con il mio Phantom3 Adv. sto registrando video in formato .MOV in risoluzione 2.7k 30fps, ma nelle impostazioni ho visto che si possono registrare anche in formato .MP4....
Mi sapete spiegare la differenza fra le 2 estensioni di file...? mi sembra che il .MOV occupi diverso spazio sulla microSD, forse il .MP4 ha una compressione di qualità' peggiore..?

Grazie a chi vorrà rispondermi...
Maurizio
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Re: Registrazione videocamera Phantom3

Messaggioda Fred94 » 08/12/2015, 19:09

sono file di compressioni diverse..la gopro ad esempio salva i file con estensione "mp4"..e una volta elaborati e montati i video Gopro Studio tira fuori un file finale con estensione "Mov"
Tra i due non saprei dirti quale sia il migliore..per questo magari un intervento dell'utente Blaser ci potrebbe chiarire un po le idee.
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Re: Registrazione videocamera Phantom3

Messaggioda MattONE » 08/12/2015, 21:37

Codec uguale (o simile) e contenitore diverso

"Diversi dai codec cono i container, ossia i formati di file che includono al loro interno audio, video, codec ed eventuali metadati, menu, sottotitoli e informazioni varie, tutti insieme.
I container, che si possono distinguere a seconda dell'estensione di un file, "


Da manuale DJI
Supported File Formats
Video: MP4, MOV (MPEG-4 AVC/H.264)

Da wikipedia
"Un formato contenitore è un formato di file che può contenere diversi tipi di dati, compressi tramite codec audio/video. Il file contenitore è usato per identificare e disporre i differenti tipi di dati in maniera non contigua. I formati contenitori più semplici possono contenere diversi tipi di codec audio, mentre quelli più avanzati arrivano a supportare anche i codec video, sottotitoli e tag metadata."

"MP4 (contenitore audio/video standard per il formato .mp4).
MOV (contenitore video standard per Quicktime della Apple)."

"QuickTime e MPEG-4
Nel 1998, l'ISO approvò il formato QuickTime come base per lo standard MPEG-4."

"L'H.264/MPEG-4 Part 10 o AVC (da Advanced Video Coding, termine inglese che tradotto letteralmente significa "codifica video avanzata"), designazione formale ISO/IEC 14496-10 o ITU-T H.264, è un formato standard di compressione video digitale con perdita creato dal Moving Picture Experts Group.

Nel maggio 2003 è stata completata la stesura finale della prima versione dello standard, mentre nelle edizioni successive sono state aggiunte varie estensioni alle sue funzionalità."
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Re: Registrazione videocamera Phantom3

Messaggioda blaser » 09/12/2015, 0:25

in parole semplici,.... MOV e MP4 sono solo contenitori e non presentano alcuna differenza reale sulla qualità dei video codificati.... scegliere tra MOV e MP4 dovrebbe basarsi unicamente su cosa si desidera riprodurre i video risultanti......se è destinato ad apparecchi Mac, si usa il MOV, ..... qualsiasi altro dispositivo non Apple,....meglio MP4..... salvo che alcuni programmi non leggono il timecode da Mp4 ma lo leggono dal MOV e viceversa
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Re: Registrazione videocamera Phantom3

Messaggioda Bianchim74 » 18/12/2015, 17:24

Quindi a livello di spazio occupato nella microSD a parità di minuti di registrazione, non ci sono differenze...giusto?
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