[FFmpeg-user] [ffmpeg-user] Transcode to high bitrate of Dolby TrueHD or DTS-HD Master

Xuebing Wang xbing6 at gmail.com
Mon Jan 5 21:38:47 CET 2015

On 01/06/2015 03:53 AM, Andy Furniss wrote:
> Xuebing Wang wrote:
>> Hi community,
>> ffmpeg options are a bit daunting for me. Can anyone teach me how to
>> transcode to high bitrate of Dolby TrueHD or DTS-HD Master?
>> I download testing samples from here:
>> http://www.demo-world.eu/2d-demo-trailers-hd/
>> Cavalcade (Lossless) (DTS-HD MA 5.1), ffplay can play it with no
>> problem, ffplay shows its audio bitrate is 1536 kb/s.
>> Can someone teach me how to transcode this .m2ts file to high
>> bitrate audio (e.g. max 24.5 Mbps for 5.1 channels, 192k sampling
>> rate, 24 bits, 5.1 channels) (i: still attain the video stream, ii,
>> audio only)?
> There isn't support for DTS-HD MA currently. ffmpeg/play will use the
> normal DTS core.
> TrueHD is supported, though I think you will get full dynamic range,
> which is not ideal. The same seems to be true for DTS.

Thanks Andy. Any idea what is the command line to resample TrueHD from 
like 640kbps to HBR (>6.144Mbps)?

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Xuebing Wang

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