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problemi dopo aggiornamento 05.8015 Oled LG 2017


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Da dicembre 2018, dopo l'aggiornamento firmware del mio LG 65e7v all'ultima versione 05.80.15, i colori in HDR HLG da SKY Q sono completamente falsati. Dopo aver tentato in tutti i modi di trovare una soluzione ho trovato su un forum australiano una discussione nella quale si parlava di un problema simile con un altro broadcaster e della soluzione che consisteva nel visualizzare i contenuti HDR HLG in modalità PC. In pratica si diceva che il nuovo firmware applicava un algoritmo fallato alle trasmissioni SDR/HDR nello spazio colore rec2020 via HDMI con il risultato di avere colori slavati e completamente sballati e  immagine buia. In modalità PC si forza la sottocampionatura del subcroma in 4.4.4. e il probema sparisce. Ho provato ed è così. In modalità PC i colori sono fedeli ma l' HDMI 2.0 non dovrebbe avere banda sufficiente alla sottocampionatura in 4.4.4 e quindi comunque qualche imperfezione c'è. Ho scritto a LG nella speranza che rilascino velocemente una patch. nel frattempo però si potrebbe fare un downgrade al precedente firmware. Mi chiedo come mai si parli così poco di questo problema che ha reso i nostri tv inservibili con l'HDR di Sky Q. Secondo me è una cosa gravissima e sono passati già quattro mesi.

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