[FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS

Robin van der Linden linden at venom.one
Thu Nov 3 21:34:25 EET 2022


about the first point, I have no idea, maybe somebody else has.
About the audio, I'm pretty sure that TrueHD is a BlackBox to ffmpeg, 
same goes for Dolby Atoms.
I'm not sure if you have access to a MacOS system, I personally run it 
inside a VM.
There is a tool called "Subler" for MacOS, which can at least transform 
a DTS source to AC3, not sure about TrueHD and other formats, but maybe 
it's worth a try. But from my understanding, TrueHD is a proprietary 
format and will most likely also not work with Subler.

Kind regards,


Am 2022-11-03 20:17, schrieb Bartosz Trzebuchowski:
> Hi,
> I’m completely new to ffmpeg and have 2 questions:
> 1. How can I convert 16:9 movies to 2.35:1? My projector can’t scale
> down and 16:9 movies run outside my 2.35:1 canvas at the top and the
> bottom. I need to black out top and bottom so only 2.35:1 is visible.
> 2. My old Yamaha surround can’t decode true HD. Is is possible with
> ffmpeg to convert the sound to DTS 7.1?
> Thanks
> Bartek
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Grüße / Kind regards,

Robin van der Linden

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