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#4591 | Link |
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AVS Special Member
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Filmmixer,
Thank you for all your input. Just as important as the techical Q/A, I'm glad you spoke up about the audio masters. What's sad is that while enthusiasts have always been "spen whores" they're taking it to a whole new extreme is this format war. Mainly since specs are what make them different. Its very refreshing to see, when a person actually working on the materials, provides their input on the subject of endless debates involving people who have no possible control over the release or an ability to do an A/B comparison with the master. So they cling onto their precious spec sheets and fight like it's DDay. |
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#4592 | Link | |
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New Member
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Also, for Dolby TrueHD, is there a similar mechanism, or being a lossless codec there was nothing to gain by sharing quantization values and such (I really don't understand audio compression theory at all). Finally, I've heard before that if you're going to re-encode, it's best to use a different codec. I.e. an MP3 re-encoded to another MP3 at the same bitrate will lose quality, JPEG image saved again as JPEG will lose quality, etc. From that quote, it sounds like it would be less lossy for a DD+ to be transcoded to DD instead of say DTS? How about other conversions? Specifically (after the HD DVD update), the Xbox 360 will be able to output DD 640, DTS 1.5, or WMA Pro (not sure on the bitrate)... for both DD+ and DTHD, what would the best output setting be? From a much earlier post, Amir hinted that WMA Pro is the highest quality audio codec the 360 can output... would that be true across the board? |
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#4593 | Link | |||||||||||
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No funny shtuff
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First of all, Marc, thank you so very much for taking time on mother's day to respond, far more detail than I was expecting. However, before I get into this I want to make something absolutely and perfectly clear - my use of "purported" was a slip, I meant it to be synonymous with "reported", without the connotation that there was some misrepresentation going on. I'm the first to admit that the typical response on fora such as this is to be skeptical of all types of posts, but I learned a long time ago that one of my biggest strengths is knowing what I don't know. It is with humility and respect I meant to frame the question, not to appear antagonistic. If that's how it came across, that's because of my sloppy prose and choice of words, not because of my intention.
Secondly, I have for fifteen years dabbled in audio production, electroacoustic composition, and other audio nerd things that do two things - give me enough knowledge to not know what the hell I'm talking about, and supreme respect for sound guys and the work that they do. I buy Mix mag and drool over equipment I don't know how to use. I purchase the glorious "Recording the Beatles" book to learn about the history and evolution of valve equipment in EMI's mixing desks from 61 through 70. I dream of sitting in Skywalker sound, tweaking the knobs as my favourite film plays (let alone chilling at Bob Ludwig's mastering room, with those speakers that have concrete bases - who knows if it helps them sound better, that's just so hardcore). Now, to your responses: Quote:
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Secondly, I was thinking of films that were older and may have had m/c mixes at one point in time, but the archive only preserved the stereo mix. Take something like Milos Forman's Hair, and older film that I assume (yeah, I could look) probably had a 4ch mix accomplished (LCRS?), but the SD DVD sounds to me like little more than a pro-logic II pass on a 2ch master. While prestige titles like Star Wars would of -course- have the effort and expense spent on creating truly discrete 5.1 mixes from the original discrete 6ch elements (and, again, I'm glossing over the 70mm 6ch mix vs. the 35mm mix vs. the mono mix, all which has been documented many times for this film in particular), I simply assumed that there are many times that in the drive to get a DVD out that uses the fancy 5.1 setting that 2ch mixes were put through a process to open up the rear soundstage and provide a consistent center channel because it looks better on the box (see your final comments below). Note that I'm -assuming- and -guessing- here, I've literally got no idea what has been done in the past...Quote:
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However (please bear with me, this might all be a mess, it's certainly making my head hurt!) I can picture a mix where when granted control to send signal to these specific channels you'd be able to have a far more subtle interaction between the side and rear surround speakers. In other words, where the matrix rolls off the panned-to-center signal and places that signal in the side speaker is the result of the selected processing method selected. On the other hand, being able to specifically direct sounds to a particular speaker, and be able to direct with great specificity in a panning from one speaker to the other how and when that occurs strikes me as an important tool. The discrete location of, say, a series of gunshots going across the back room would be able to be achieved with much greater precision, in theory, if you could place the shot in whatever speaker you choose. Where things get crazy, of course, is that if in fact you are mixing for discrete rear surrounds, you could of course mix a phantom center -between- BL and BR! I'm no doubt confusing the issue all to hell - I'm trying to suggest that discrete 7.1 mixes could avoid -any- steering artifacts. Whether or not there is any creative advantage to this is another story. Give ALL of that madness, are there any true, discrete theatrical 7.1 presentations? IMAX with its second CC maybe? If for all intents and purposes CH6 and 7 of your 7.1 are a shared signal for theatrical, and that this signal could just as easily (and without a dramatic difference in perception) be made by adroit mixing of the side surround channels and dexterous matrix decoding, then we're back to where you started, namely, that the difference between a 5.1 mix and a 7.1 mix at home (with all the caveats above) are pretty damn close to being identical. Quote:
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Read Filmfest.ca! |
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#4596 | Link | |||
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AVS Special Member
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#4597 | Link |
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AVS Special Member
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@Roger Dressler, thanks four your replies here, much appreciated!
Another question: What is your stance about open source decoders for Dolby formats? Do you consider them legal? Can Dolby software decoders generally be developed without having to pay fees? The Linux crowd is currently short of E-AC3 and TrueHD decoders. I understand that an open source E-AC3 decoder is in the works, thanks to openly available format specification. But it seems that specifications for TrueHD are not readily available. Would you consider making TrueHD specifications available to support open source development? |
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#4598 | Link |
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AVS Special Member
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@Amir/Ben: Would you mind trying to find out which bitdepth Warner and Universal (and Paramount) are feeding into the DD+ encoder for the HD-DVD releases? If it's not yet the full bitrate of the master, maybe the studios could be convinced to go the extra mile for that last 1% of sound quality? I mean it wouldn't cost one bit more space/bandwidth, so it sounds like a good option to me!
Also: Is there a chance you could convince Warner to use 1.5Mbps instead of 640kbps for those discs which don't have a TrueHD track? @Paidgeek, do you know which bitdepth Sony is feeding into the DD encoder? Thank you!! |
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#4600 | Link | |
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heh.. he said member
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FilmMixer,
Thanks so much for your time (and all the insiders actually). My question is reguarding the final "finished" mix. In general who decides an audio mix is complete? Is this done with ears only or some sort of visual representation of the levels etc also? |
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#4601 | Link | |
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HD DVD Insider
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No, you select your preference for audio re-encoding.
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HD DVD Veteran |
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#4602 | Link | |
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AVS Special Member
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#4603 | Link | |
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FILM guy using video
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Nicely put. IF I MAY RE-PRESENT TWO QUESTIONS FOR YOUR CONSIDERATION . . . . . ONE On some 5.1 HDTV broadcasts all I get from the rear channels is just the foley and babble / walla tracks. No music ambience, no effects, no nothing. Mostly on CBS shows most recently SHARK. I'm guessing this is a local encoder issue . . . . but how does that happen? Have you ever noticed this? Has anyone ever done that deliberately? TWO; A quick one; what is the reason for using three VERY tightly spaced mics for recording voices for animated films. I see this all the time in videos from PIXAR . . like this one; thanks, -30- __________________
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Film Is NOT DEAD -- it is the Gold Standard against which all other formats are measured Support ORIGINAL ASPECT RATIO |
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#4604 | Link | ||||
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Picture Mixer
AVS CLUB MEMBER
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![]() In the past couple of years, we have been delivering all cut elements and pre dubs to the clients, along with their corresponding DAW counterparts. If the film is mixed on a traditional console, we sometimes send backups of automation files and the like, but they aren't really going to be of any use in the future. Quote:
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and I see it as a minor issue.The only theatrical 7.1 mixes are in SDDS, and they use 5 across the front. And just so I didn't confuse the issue, studios do use these lossless masters to encode from, whether from our printmaster or a home video remaster (i.e. New Line and Lions Gate.) |
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#4605 | Link | |
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AVS Addicted Member
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It is my pleasure to let you all know that the HD DVD udpate for Xbox 360 is slated for release on 5/15 (i.e. tomorrow!). So when you wake up in the morning, you should be able to upgrade your software. And me free from telling you when are going to get it
. Hope you all download it and provide feedback on what you think!And sorry I did not give more of a notice. I was out on the cruise and only now got around to getting the specific time/date for it.
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Amir Contributing Editor, Widescreen Review Magazine Retired Digital Media/HD DVD insider (circa fall 2007) |
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#4606 | Link | |
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Picture Mixer
AVS CLUB MEMBER
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![]() When we final mix a film, after premixing, it is the mixers, supervising sound editor, music editor, film editor and director on the mixing stage... we start at the beginning and dub away. I like to start by running the reel down (film reels are on average 20 minutes per reel) with the faders up to hear what everybody has, and then we roll back to the top and start, usually going once through a scene, and then inching through the details.... and this is where we start to get a coherent mix.. we will throw things out, add things in, work the music, try it one way, then another, try alternate takes of dialog, lose music cues... etc. It's a fun process... Sometimes, if you have a car chase, for example, we have to decide if the sound effects are going to dominate, or the music.. if the effects win, I have to work really hard not to lose the music and get it through where I can... so we will go over and over it seconds of screen time at a time... Or when you have music that is played as source (i.e. from a radio or in a club) you have to get a sound for it (is it in the room or coming through the wall), mix it into the space and then mix it around the dialog so that you aren't stepping all over the words. After we finish a reel, we will play it back and all take notes... raise music here, replace that door close there, etc.... We will then mix the other reels and fix those. After that, we will assemble the mix so we can watch the film from beginning to end and take more notes.. still a lot of small detail notes, and making sure that one reel isn't out of balance level wise with the others (you mixes tend to get louder as the day wears on and your ears get tired).. somtimes go get big notes and then we will recut elements or try differnt directions. Final fixes and then we move on to the mastering.... As a general rule, we mix ten hour days (9am - 7pm), and we do a lot of overtime and weekends to hit dates. Sorry for the long answer to your short question. |
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#4607 | Link | |
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Picture Mixer
AVS CLUB MEMBER
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On to the second question... I am no miking expert, and never got into that part of the process (live sound scares me too much, I'm more of a multi take guy ) However, that picture looks like it is setup to look cool for the camera.. because the first mic is blocking the other two..... but they may be using the back two mics in an M/S pair to get some stereo ambience for the recording.. I will pass the picture along to some of our ADR mixers and get back to you on that. |
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#4608 | Link | |
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Senior Member
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#4609 | Link | |
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New Member
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Should be a good day, DTS fix AND the Matrix boxset in one day ![]() |
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#4610 | Link | |
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AVS Special Member
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One question: will the update be prompted to all Xbox360s or only to the consoles with the HD DVD player connected? |
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#4611 | Link |
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AVS Special Member
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Amir or another MS insider,
My 360 died last week and I am right now waiting for a replacement voucher from Best Buy. My question (which I am sure I can call and find out later but would like to ask here) is what happens to the movie I downloaded and have not yet seen? Will I be asked to download it again or if I keep the hard drive I have it on will I be charged to view it? I watched the first 20 seconds when my 360 died. By the way it was the Horrorfest 1st double feature. Thanks in advance
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Paul Seng |
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#4612 | Link | |
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AVS Addicted Member
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In general, the update only applies to playing HD DVDs. So there would be no need to apply it to the console itself. But I assume your question relates to having the software, and adding the drive later...
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Amir Contributing Editor, Widescreen Review Magazine Retired Digital Media/HD DVD insider (circa fall 2007) |
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#4613 | Link |
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AVS Special Member
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This is very good news about the HD DVD player update........just in time for the Matrix Trilogy!
Hopefully it will be a glitch free update.
__________________
Panasonic 42PX75U Plasma PS3 60 GB Xbox 360 Elite Toshiba HD-A2 Pioneer VSX-1018 Polk Audio RM6750 |
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#4614 | Link | |
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Member
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#4616 | Link |
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AVS Special Member
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Amir,
I have a question about the update (thanks for getting it to us, btw!). Supposedly there will be a way to toggle DRC on/off (for DD+ only? or for TrueHD as well?), as well as a re-sample to DD or DTS option. Where will these options appear for us to access? In the Dashboard? And are there any other changes besides the below? -Fixing a/v sync issues -Fixing disc read/ compatibility issues with various discs -Adding DRC/Night Mode toggle option -Adding option to select DTS versus DD for audio re-sampling output Thanks! Last edited by cyberbri; 05-14-07 at 04:33 PM.. |
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#4617 | Link |
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Member
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Dear amirm,
THis is great news thank you very much and good work on this new update for the hd dvd player, but i have a question. How does the hd dvd group plan on beating blu-ray cause i think there is alot more things hd dvd could be doing. Like are there other timed exclusive titles coming to hd dvd like the matrix trilogy? And i also think some retailers should offer the 360 elite with the 360 hd dvd player packaged together for 600 bucks, I think that would generate alot more players sold as well. |
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#4619 | Link | |
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Senior Member
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Amir, I think this is THE greatest news I've ever received on this forum. It has been a long time coming and I'm confident it will be well worth the wait. Please check out the feedback thread I've started in the HD DVD Players section for everyone's feedback on the forthcoming update. Kudos to you and your team working hard on getting this update out to us! I hope this will stop all of us hounding you for a fix/release date ![]() |
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#4620 | Link | |
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