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6 votes

How to extract 5.1 audio from mkv/avi/mp4?

Here's a way to obtain this result using ffprobe and ffmpeg. First, let's see what audio streams are available in a given file : $ ffprobe my_input_file.m4v What we are interested in this part of ...
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3 votes
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5.1 surround headphones for mixing?

Working on headphones for a 5.1 mix is not a good idea. Nevertheless, what you might be looking for is a 5.1 to binaural renderer. An example of such a product can be found here : http://smyth-...
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3 votes

AC3 stereo fold down

What you call a fold down is called a downmix in ac3 standards. The default settings for an ac3 decoder making a downmix of a 5.1 stream to a stereo output is the following (as mentioned here : http:/...
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1 vote

What is the easiest way to create 5.1 sound effects (sound panning from one channel to another)

The 'easiest' way is to start with actual 5.1-capable hardware [even if it's only a $£€ 15 USB DAC from eBay] so that the apps you tried will recognise it as a proper 5.1 output. After that, ...
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1 vote
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Playing FLAC in home theater system that doesn't support it?

Your Sony Home Theater System probably doesn't support FLAC because it doesn't have the codec to uncompress the FLAC audio files. It kind of depends on the features of your hardware and the settings ...
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1 vote

Mixing 5.1 sound for film

Exactly 2 seconds before the first frame of picture you put 1 frame of 1khz tone. Used to sync audio and video. You can use a signal generator to do this such as the one in Pro Tools.
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1 vote

Will my film mixed in stereo 2.0 play in Dolby 5.1/ 7.0 theater?

Basically, what the festival is saying is that for play back that is using a high end professional cinema distribution, they need to use particular speaker configurations. For your film, they are ...
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1 vote

Will my film mixed in stereo 2.0 play in Dolby 5.1/ 7.0 theater?

It will play but probably won't sound as good as if it was mixed in 5.1 or 7.1. Because it's only the 2 speakers the sound will "pull" to the side for people sitting far off center. Other issues ...
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1 vote

The relevance of 5.1 ambiences

It dépends of the recording : if it´s a nice mountain air , a subtle forest environment, large crowds or an interesting roomtone, i say yes : LCR, 5.0 are really convincing formats (for features, ...
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1 vote

5.1 channel order for home theaters, computer, and cinema

the sticky threads here: http://www.gearslutz.com/board/post-production-forum/ have a lot of real life info from professionals. No matter what format you mix in you can always just export each ...
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