First post, please help...
#1
Hello folks, hope everyone had a great turkey day and a great weekend. So I picked up a Sony Bravia 4k this past black Friday. And now I'm beating myself to death trying to acquire content. I've downloaded movies before, but always just standard 720 or 1080. I have crappy 6mbs internet as its the fastest available for the one lone provider that will service my rural next of the woods. Ill buy a 4k player eventually if I cant get thing figured out through my current means, which leads me to my question.

I bought a 256GB 3.0 sandisk usb flash drive. Found a 4k movie via TPB, downloaded it (took almost 6 hours!). Finally when it finished I was excited to watch my first 4k movie ever. Attempted to transfer the file to my usb stick and get a "no files larger than 4gb" error message. Well crap I though. Did some research and found out I needed to format the drive in NTFS. Formatted, transferred to stick (took a bit since I'm running a 2.0 port on my PC. Transferred the file to my usb stick and plugged it into my TV. Video but no audio. Shit.

So now I've come to the conclusion I need to change the Audio codec, but every time I try I fail. Ive tried using VLC, Handbrake, couple others. I finally got a working conversion from the MKV file with Handbrake, only problem was it doesn't have a "passthrough" video option, so the working copy I got the audio sounded great, but scaled the video down to 1080. Can anyone help me? Not running surround sound. Audio is coded in "TRUEHD 7.1"
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#2
What audio are you changing it to?

AAC / DTS / MP3
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#3
(Nov 26, 2017, 19:27 pm)contrail Wrote: What audio are you changing it to?

AAC / DTS / MP3

AAC or mp3
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#4
[Image: 9wmgeSj.png]

Maybe it is one of those settings on the side?
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#5
(Nov 26, 2017, 20:09 pm)contrail Wrote: [Image: 9wmgeSj.png]

Maybe it is one of those settings on the side?

I actually used that exact one, the fast1080p30 and, while audio was right, it reformatted my 4 k video stream down to 1080.
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#6
Sure, because numbnuts didn't read the question again.

Handbrake can't help you here because there is no option to just re-encode audio.

ffmpeg can certainly do it, but it is a bit more of a learning curve.  There are a few GUI tools to make using it easier.

If you'd rather not climb the ffmpeg mountain, Handbrake can still do the trick with some extra steps. Ultimately, you can take the audio from the newly encoded file and re-mux it back into the original. Just set the video to the barest minimum since you will ultimately discard that and use something like MKVToolNix to extract the audio from the new encode and replace the track in the original.
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#7
Assuming you still have the original 4K file, use MKVtools to MUX the Audio from your
1080p file with the Video from the original file. That only takes a few seconds.

Like you my Samsung TVs can't decode audio streams like DTS.

Edit: LOL! as soon as I posted this I see Moe saying the same thing!
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#8
(Nov 27, 2017, 00:06 am)Faithwyn Wrote: Assuming you still have the original 4K file, use MKVtools to MUX the Audio from your
1080p file with the Video from the original file. That only takes a few seconds.

Like you my Samsung TVs can't decode audio streams like DTS.

Edit: LOL! as soon as I posted this I see Moe saying the same thing!

Thanks so much for the help folks, I really appreciate it. Its been a heck of a learning curve, I've only been introduced to audio codecs at all as of this past weekend so I'm learning a lot. MUX(ing?) is just mixing an audio stream and video stream yes? Anyone have a tutorial how to use MKVtools to do so? Also when I look at the original MKV file in windows explorer or a program, it doesn't show a video stream and audio stream, just one mkv file. That being sad do I just add the mp4 audio stream to it or do I have to strip the truehd stream out of it first?

On a side note, why do most TPB uploaders load 4k with TRUEHD audio that apparently most can't use? That seems silly. Or is it a sony thing?
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#9
'Muxing' = Multi-plexing (merging)
When you open that MKV file in MKVtoolNix you will see each separate stream:
Video, Audio, Subtitle, Chapters, ext...
You can open more than one .MKV file at a time and mix & match the different streams
to create one output file that contains the only the parts you want.
I'll try try to create a screen-shot to paste here showing a good example.
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#10
You could just try another download. Especially if you don't care about surround sound. It may take awhile, but why bother messing around with all the audio stuff, when you can just get one that works?

If you said what movie it is, that would help too.
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