Hello everyone
Im about to encode my blu-ray collection, and i know the ATV2 and ATV3 dosent support DTS HD and DTS. I dont own a 5.1set yet, but I will later, so to be a litte sted forward, i will convert my movies so they play 5.1, but if i choose 6-channel discrete, will it then play 5.1 when i get a set?
I use the Apple tv3 preset, and finds it great, i have a dolby pro logic 2, audio track and then what shall i downmix the DTS to?
Thx very much
What should i downmix DTS to?
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Re: What should i downmix DTS to?
It will play 5.1 if you use 6-channel discrete. You're basically transcoding the DTS to AC3.Mark RL wrote:Hello everyone
Im about to encode my blu-ray collection, and i know the ATV2 and ATV3 dosent support DTS HD and DTS. I dont own a 5.1set yet, but I will later, so to be a litte sted forward, i will convert my movies so they play 5.1, but if i choose 6-channel discrete, will it then play 5.1 when i get a set?
I use the Apple tv3 preset, and finds it great, i have a dolby pro logic 2, audio track and then what shall i downmix the DTS to?
Thx very much
Re: What should i downmix DTS to?
For AppleTV compatibility, you want:
Code: Select all
track (1): AAC 2-channel (Stereo or Dolby Pro Logic II)
track (2): AC3 Passthru if the source has an AC3 track (Blu-ray discs with Dolby Digital or TrueHD audio)
AC3 (ffmpeg), 6-channel discrete (which means 5.1) if the source has DTS or LPCM audio instead
Re: What should i downmix DTS to?
Thanks Then I can get going
Re: What should i downmix DTS to?
FYI AC3 @ 640kbps (the highest HB supports for AC3 using 6-channel) is pretty much DVD quality sound. It is about a quarter the bitrate of a DTS-HD lossless track. Just something to keep in mind (I convert all my lossless audio to that to save space).
Re: What should i downmix DTS to?
Well, it's better than DVD quality (which has a limitation of 448 Kbps for AC3).
Of course there's the issue of re-encoding a lossy source (e.g. in the case of DTS, where HandBrake can only decode the core); lossless -> lossy -> lossy may negate the advantage of using higher-than-DVD bitrates.
Of course there's the issue of re-encoding a lossy source (e.g. in the case of DTS, where HandBrake can only decode the core); lossless -> lossy -> lossy may negate the advantage of using higher-than-DVD bitrates.
Re: What should i downmix DTS to?
Not to mention the maturity of ffmpeg's AC3 encoder versus the commercial competition.
Re: What should i downmix DTS to?
Indeed. Though Justin spent a good deal of time fine-tuning his encoder, so I'm inclined to suspect that combined with the increased bitrate, and given the same source, his encoder (i.e. Libav's) at 640 Kbps should beat a commercial encoder at 448 Kbps (though I have not tested, much less ABXed, this statement).TedJ wrote:Not to mention the maturity of ffmpeg's AC3 encoder versus the commercial competition.