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5

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 the output : Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 718x552 [SAR 64:45 DAR 5744:3105], 1023 kb/s, 25 ...


4

Hi Andrew, Here are the short answers to your questions... Yes... the downmix is part of the Dolby or DTS decoder built into the DVD player. It's not an option, if the Dolby or DTS logo is on it, it will do it. I'm not from London, but any authoring house should be able to do this for you if you give them both sets of tracks - you need to have two separate ...


3

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-research.com/technology.html What I would suggest is doing most of the job (editing, premixing stems, filtering, etc.) on a stereo monitoring system (therefore ...


3

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://www.dolby.com/us/en/technologies/dolby-metadata.html) : Left and Right channels are sent to their respective L and R channels. Center channel is sent to both ...


2

Soundfield UPM-1. Lower budget solution Waves UM 225 or you could try Iosono Anymix. They all work best with stems though. Try the demos and see what works best for you. None of these are a "click a button and done product" though, then again, nothing in this field of work is, or rather should be. Good luck.


1

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 on whether you are getting the best audio output. Most likely, this is what is happening: Your laptop is decoding the FLAC file to an uncompressed digital ...


1

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.


1

A surround system with a higher speaker count simply adds (or attempts to add) to the level of spatial immersion that's achievable. 5.1 is good for home setups, because going to the higher speaker counts a) costs more b) is more difficult to configure correctly. If you don't know what to pick, then buy a speaker set. And I would advise it in any case, ...


1

You'll have to export stems for him. Or a whole bunch of consolidated audio files of each track. I use REAPER as well and if I was doing something like this I'd look at doing stems. Something along the lines of: - Dialogue - Atmos - Foley - SFX (possibly multiple stems here depending on the complexity of your design) - Music I'd ask him what he would like ...


1

It is best to use the extra head room for dynamics rather than continuous loudness, especially in a horror film, dynamics is your most powerful tool. Set up a monitor level to a standard 85 dB, ten use your ears. While working on loud scenes for an extended period you can reduce the SPL to say 80, but switch back to 85 from time to time to check your work. ...


1

try art4noise.com, not sure on their prices but an awesome bunch of guys who really love what they do work there.


1

Most home entertainment receivers allow for Bass Management by setting the 5 monitors to ' small ' in the set-up menu - thus sending their low end (generally crossed over @ 80-120Htz) to the sub. As georgi.m suggested: it would be good to read up on bass management theory to fully grasp what's going on here and how it affects your playback monitoring... ...


1

Read up on http://en.wikipedia.org/wiki/Bass_management


1

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 just using a standard bluray playback, so you can just burn a bluray disk with it and be fine. The exact way your sound will behave depends on how they have ...


1

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 maybe be that it wasn't mixed with an X-curve and in a large room calibrated to theater levels. Your mix will most likely just come out the L and R speakers, ...


1

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, videogames...). But if mono or stereo recordings sounds better or more appropriate i will use and layer them to recreate a spatial environment, according to the ...


1

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 channel as a mono file and change the configuration when doing the final layback. When I mix, I always go to the highest playback standard, in this case it would ...


1

ProTools does have a built in surround panner, it has for a long time. Have you read the manual at all? It sounds like you already have a bias against ProTools without having actually used it all based on your 2nd question. You just have to have the 5.1 mixer installed and surround panning will work. Did you click on the small fader next to the volume ...


1

You cannot run SPDIF cables on an iMac , simply because SPDIF use RCA connectors .. Your data will get scrambled if you use an adapter on it. If you want to use 7.1 your iMac. The only way you can do it is with a significant quality AD/DA Convertor (Sound Card), which works a primary sound card for your iMac. Your iMac will generate outputs only based on ...


1

To answer question 2, the surrounds are generally used for ambiance unless you are doing something like action or sci-fi in which case you can be a bit more experimental and put sound FX or musical elements into the surrounds but be very careful - the last thing you want is for people to be distracted by FX coming from behind them. The basic way to do a 5.1 ...


1

In answer to 1) Use cross fades and volume automation to smooth out BG levels, keeping voices the same level (bearing perspective differences in mind). Cheat in alternate readings where noise is very bad. Cover very bumpy spots with sound effects such as car bys, etc. Cleaning out noise can be done, of course, but don't harm the voice quality in the ...


1

I've found in past experiences that 5.1 ambiences are great for a bed, but you would be best off with layering in some stereo tracks in order to create a wider sound field. The distinct stereo tracks will widen your soundscape, a 5.1 ambience doesn't have the same perceived width because you are sending very similar sound to all the speakers.


1

I recently made records in Vietnam in 5.1 also in the jungle. But 'Jungle' is a very wide term, so if you could be more specific, I can check if I have something for you. For example the jungle in Vietnam was very misty and quiet and completely different for example to a jungle in brazil. Also, if you are working now on the filmset, why are you not ...


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