AAC 5.1 conversion to optical DTS or AC3

[MyLastWord]

As I recall, it's really easy to use. There's an option to convert an indivual MKV file with 6ch aac to 6ch AC3, or convert the whole folder.
I test out with 1 file, make sure it work, then move all files I want to convert to a folder, and convert the whole folder. I used mediainfo to find out which
aac files I want to convert. If output folder=input folder, the file will be created as xxx_AC3.MKV. Each file probbaly take 10-15 minute to complete.
The setting have a tab to convert DTS to AC3, if checked, will convert DTS (5.1) to AC3 (5.1), another tab to convert AAC (2ch or 6ch) to AC3. Each section have a selection for the bitrate you to use. The video is untouch for sure as it use MKVExtract, MKVMerge etc... from MKVToolnix to do the demuxing & remuxing. Just the audio portion being convert.

For me the pain is come from converting an MP4 with 6ch aac file to MKV 6ch aac files. I would be using MKVToolnix GUI, add MP4 file, make sure compression header for both Video and Audio is 'none', and then convert (remuxing) to MKV file. I don't know why I took so long for the GUI to respond (more than 5 minutes wait) after I add an MP4 file in.

That's my experience. I hope that help.

[dereboyu]

Both proposals didn't work smoothly for me. Either there was still some disturbance in 1080 movies or it was too complex. I guess, I'm realizing what the bottleneck was. I'm connected via Fast-LAN (100Mb) to my router, which had 54Mb at the begin. Later, I moved to a 300Mb version, and realized the same problems. So, now I'm believing that the bottleneck is the Fast-LAN connection between the PC and the router. I will try a Gigabit-LAN (1Gb) to see, whether the speed of the connection is fast enough. This will take some time, since I need to organize a router with 1Gb before I finally buy one.

[recliq]

100MBit LAN link shouldn't be a bottleneck here...

[sobota]

MP42MKVac3 convert MP4 files with AAC sound integrated to MKV files with ac3 sound

[MyLastWord]

MP42MKVac3 convert MP4 files with AAC sound integrated to MKV files with ac3 sound

Either I Don't know what I am doing with that app, or It's a nasty app. Installed it, Ran it, select my MP4 file to convert, a DOS screen came up briefly, then POOF!! the file is gone.

[sobota]

I've been using this tool, all my mp4 files-converted.
yes dos window shows the progress. this is normal.
Just try another mp4 file.
Mp42MKV does not delete the original MP4 file.
Notify the software developers about your problem that you can do on the homepage

[newwikstromkaren]

Hi mighty developers...

I'm seeing more and more small size mkv movies with AAC 5.1 audio track. Is it possible to create a solution which converts AAC to DTS or AC3 via optical link, so that the AV receiver can play the 5.1 audio?

Thanks and regards...

You may refer to this powerful Total Video Converter which is also a outstanding DTS/AAC 5.1 to AC3 Converter

The following is a step by step guide on How to Convert DTS MKV to AC3?
In fact, it also applies to convert AAC 5.1 to AC3

Hope it helps more or less