There oughta be a bullet time video sales space.

26 Might 2023

For my cousin’s marriage ceremony I didn’t make a photograph sales space however a video sales space. – With an array of DSLRs to create a bullet time impact.

Since this can be a very visible mission, it is best to actually watch the video. This weblog put up comprises the identical data with extra particulars, however these particulars are in all probability solely related in the event you actually need to recreate this mission, which isn’t a simple factor to do.

What’s a bullet time video sales space?

The story of this mission really begins in 2017 once I created a video sales space for my very own marriage ceremony. At many marriage ceremony receptions you’ll find picture cubicles, that are easy digicam setups with a distant set off to permit company to create some recollections of the special occasion. Normally this entails foolish props like hats, wigs and large glasses and it’s as a lot about creating images as a reminiscence as it’s concerning the enjoyable of being inventive whereas doing so. …and for my marriage ceremony I combined it up a bit by placing my Sony NEX-5T on a tripod and permitting company to take brief 5 second clips ^{as an alternative of static images. Later I reduce all of the clips into one lengthy video with upbeat music and we nonetheless get pleasure from watching this reminiscence right now.}

My household loved it a lot, that one in all my cousins used the identical setup a couple of years later at her marriage ceremony and when one other cousin deliberate his marriage ceremony for this 12 months, he additionally requested for a video sales space. However this time I needed to attempt one thing new by including a bullet time impact.

In case you by no means heard of it: The bullet time impact was famously launched with the film “The Matrix” from 1999. It actually grew to become a signature type for these motion pictures and has been copied and reused so many instances that it just about grew to become a film cliché. However whereas it might simply be recreated in purely rendered type like animated motion pictures or video video games, it’s nonetheless fairly concerned and dear to attain with actual cameras: You arrange an array of picture cameras, set off all of them concurrently ^{and play again the person images as frames of a video. The result’s that the scene appears to be frozen in time whereas the digicam strikes round freely.}

And right here you see the issue for hobbyists. In case you are not rendering the whole scene however must take images of actual folks, this could shortly turn into costly. Bullet time-time prices one digicam per body. For somebody capturing with the standard “European” 25 fps ^{that’s 25 cameras per second. And that in fact additionally explains why my bullet time video sales space solely makes use of this impact for the transitions as an alternative of recording a number of seconds of bullet time footage. I merely needed to maintain the prices for this mission in an affordable vary by solely utilizing twelve cameras.}

Which means that I solely have a bit lower than half a second of bullet time footage per visitor. However as you could possibly see within the little instance clip above (and extra within the Youtube video) the impact continues to be good and seems longer. To attain this I used two tips:

• I set off the cameras at first and the tip of every video recording and they’re organized in an arch in direction of the wall behind the company. By mirroring each second visitor clip and enjoying the bullet time images in several order I can mix the 2 twelve picture sequences from the tip of the earlier visitor clip and the start of the subsequent visitor clip to make it seem like the digicam spins by way of the wall to the subsequent clip. An extra blurred body on the location the place the digicam can be contained in the wall and a non-equidistant placement of the cameras for an accelerating movement in direction of the wall assist to promote the impact. This provides as much as 25 frames and subsequently one second of bullet time footage.
• I created the ultimate video of all company (and the instance above) in DaVinci Resolve and used its Optical Circulation Estimation to generate manmade further frames. This enables to easily decelerate the bullet time impact additional and in addition regularly decelerate the video recording after leaving a bullet time transition and earlier than getting into the subsequent bullet time transition.

So, I used to be in a position to pull this of with twelve cameras plus the one for the video recording. However this setup requires extra than simply the cameras…

Setup

On this part I’ll undergo the essential parts of the bullet time video sales space. Needless to say just about every little thing was chosen to maintain the prices as little as attainable. Sadly, this additionally implies that some parts have been a nasty determination in hind sight and a few parts are merely costlier or higher gear which I occurred to have already got. So, if you wish to construct one thing comparable, be ready to select your personal parts and adapt the software program to your wants.

Bullet time digicam array

Let’s begin by trying on the half that clearly is the most costly as a result of that buy comes with an element of twelve: The cameras used for the bullet time impact.

After I stated that the bullet time impact continues to be costly, I’ve to confess that it has turn into less expensive since 1999. Cameras have turn into so available and good right now {that a} comparability to 1999 gear can be ridiculous. Nonetheless, I set myself a restrict of fifty€ per digicam, which implies that the twelve cameras alone would value 600€, which I discover fairly heavy for a enjoyable gimmick to a video sales space^{. And now take into consideration what cameras you may get for 50€… There are some potentialities like webcams, used smartphones, used motion cams, and so on. However used ones for 50€ may have poor picture high quality and their small sensors will not be splendid for this impact as they require extra mild for brief shutter speeds or you’re going to get quite a lot of movement blur. Raspberry Pi cams are additionally an fascinating various within the maker world, however the low cost ones have very poor picture high quality and the higher ones value 50€ alone with out a lens – and also you want a couple of precise Raspberry Pis that are much more costly.}

As a substitute, I appeared for outdated used DSLRs. They’ve giant (albeit outdated^{) sensors, they help means to remotely set off the shutter, they’ve loads of decision, their settings will be managed exactly and no one besides me is excited about them anymore. The trick is that we’re utilizing the picture mode of those outdated DSLRs to create a video, which implies that we’re evaluating outdated picture specs with fashionable video specs. So, I appeared for the oldest mainstream newbie DSLR that has a good decision and picked the Canon EOS 400D from 2006.}

That digicam is now virtually 17 years outdated, which implies that craigslist ^{is filled with these cameras. There are such a lot of folks making an attempt to promote their outdated digicam with virtually no one being excited about such outdated expertise that I might merely work by way of the gives beginning with the oldest listings. I provided my 50 bucks for the 400D and its mediocre package lens, reminded the vendor that no one has even appeared on the itemizing in six months, and both he accepted or I contacted the subsequent one within the listing.}

However is it ok? Effectively, that’s the place we will now evaluate the picture specs to the video specs. The outdated 400D from 2006 has a photograph decision (it can not even shoot video) of 3888×2592 pixels, which is greater than our fashionable 4k (or really UltraHD) video with 3840×2160.

Video digicam

However for the reason that Canons can not report video ^{I want yet another digicam as the principle digicam that shoots the video. Initially, once I chosen the 400Ds, I aimed for 4k video and deliberate to make use of my trusted Sony a6400 for this. Sadly, it turned out to be reasonably tough to set off the video recording exactly and switch the ensuing video file. Each will be achieved by way of USB, however one requires the digicam to be in management mode and the opposite one requires it to be in mass storage mode. Video information apparently can’t be transferred in PTP mode, which appears to be an oversight by Sony.}

I both wanted to make use of a Wifi SD card like I did in my outdated unique video sales space or report externally with an HDMI grabber. Since transferring 4k movies with a Wifi card (or perhaps even recording to that outdated Wifi SD card) appeared like a nasty concept, I dropped the 4k purpose and went with one in all my low cost 1080p HDMI grabbers as an alternative. And since I didn’t must tie up my good digicam on this mission if I solely report 1080p footage by way of a mediocre HDMI grabber, I used my Sony a5000 as an alternative. A few of you may bear in mind it from an older put up, as a result of it requires a hack to get a clean HDMI signal.

So, we’re all the way down to FullHD, however as a plus utilizing an outdated low cost digicam provides me some precious peace of thoughts when leaving the bullet time rig unattended on the marriage ceremony venue.

Quarter circle stand

At that time I assumed that I had purchased the most costly a part of my bullet time rig – till I confronted the query of methods to mount the cameras. Whichever answer involves your thoughts proper now: Keep in mind to multiply its value by twelve and suppose once more.

Utilizing twelve particular person super-cheap tripods is impractical as somebody will simply hit one of many tripod ft and misalign a digicam from the opposite ones. So, I used to be positive that I want a standard stand to which I mount all cameras. I first considered traverse materials as discovered on stage, however that’s tremendous costly. The subsequent concept was to construct one thing myself out of plywood once I stumbled upon a B-stock e-drum rack. Particularly, it was a rack for the Alesis Strike Professional SE. By itself this isn’t splendid as a result of its parts will not be sufficient to type a correct quarter circle and the horizontal bars will not be mounted on the identical heights. However I acquired that B-stock rack and a brand new one for a complete of 93€ and mixed them in a unique association. This even left a couple of spare elements that I might use to mount a display to the setup.

Sadly, that was not the tip of the issue, as a result of I nonetheless wanted to mount the cameras to the rack. That’s the place I went for an answer that was too low cost. I acquired low cost clamps from aliexpress (which have been wonderful) and connected them to the cameras with easy threaded rods and low cost threaded plates. My thought was that twelve low cost ballhead mounts are fairly costly in whole and that as an alternative I might rotate the clamp across the rack bar and alter the second axis by tightening the threaded plates. Sadly, I ended up simply tightening the clamps to the cameras till the threaded plates cracked, which labored okay that one time, but when I need to use the setup once more, I want to exchange all plates – and doubtless purchase twelve of these low cost ballhead mounts in spite of everything.

Energy provides

One other dangerous answer that I can not advocate is the ability provides. You clearly don’t need to depend on batteries, so a set of dummy batteries from aliexpress needed to be bought (once more, issue twelve – you see how this provides up?). For some purpose I assumed that getting ones that plug into USB ports as an alternative of AC retailers can be a good suggestion, though each must convert the voltage to the digicam’s 7.4V. The tempting concept was that I might simply plug all cameras into two 8-port multi chargers.

That was till I did my first checks and the cameras reset as an alternative of taking an image. A minimum of once I triggered all twelve cameras concurrently. As a result of in that case the chargers couldn’t sustain with the sudden surge present and have been unable to offer the right voltage for the cameras. I feel the issue right here is that these outdated DSLRs want subsequent to no energy in standby as they don’t present a stay view. However when triggered, they’ve to maneuver the mirror in addition to the shutter whereas all of a sudden studying and processing the sensor – and so they have been designed with a Li-Ion battery in thoughts and never an affordable USB-based converter. The chargers then again anticipate a roughly fixed excessive present draw from a tool that really buffers sudden energy calls for with its personal battery.

No matter the reason for the issue I attempted many chargers and most of them struggled with the triggering cameras. In the long run the multi-charger was probably the most dependable one if solely two cameras have been linked, so I ended up shopping for six of those multi-chargers, which in fact was far more costly and inefficient than utilizing dummy batteries with particular person AC energy provides within the first place.

USB connections

And whereas we’re speaking about USB issues, the info switch was not any simpler. I linked the twelve cameras by way of two energetic USB hubs. I feel that is near the restrict of what you need to handle as a big internet of USB cables. Bigger initiatives ought to as an alternative use a couple of Raspberry Pis and join by way of ethernet, however twelve cameras plus a Rapberry Pi Pico (see subsequent part) plus the HDMI grabber (by itself USB bus) ought to be managable, proper?

Effectively, it labored on a Raspberry Pi 3 which I first used because the mind of the bullet time rig. I had some electrical points like the whole USB bus resetting once I activate the fluorescent lights in my basement, however in precept I might management and read-out all cameras reliably. However for the reason that Pi 3 was too sluggish to generate a preview in below a minute I changed it with an outdated Dell XPS 12. And all of a sudden I couldn’t use all USB units on the identical time.

After some analysis I realized that the Intel xHCI USB3 host controller in that machine has a restrict of 96 endpoints and that USB3 makes use of (at the very least) three endpoints per machine. That’s nonetheless lots? Effectively, don’t neglect that every USB hub and all inner USB units just like the laptop computer’s Wifi module, Bluetooth module, webcam, sensor hub and inner USB hubs depend in direction of that restrict. In the long run, after blacklisting some units (no BIOS choice to disable the webcam) I nonetheless had one machine greater than the controller might deal with.

The answer? Connecting the USB3 hubs by way of an affordable USB2 cable. Critically. That pressured the units into USB2 mode, diminished the variety of endpoints and solved the issue.

Digital camera set off

Okay, so at that time we’ve got all cameras mounted, they’ve energy and they are often managed by way of USB. That’s it, proper? Not essentially. You’ll be able to set off the cameras by way of USB and that’s what I attempted first. However I discovered that this was not dependable and exact sufficient and that some cameras would set off with a minor delay. Not a lot, barely noticable from the sound of the digicam shutters, however in the event you play again the images as a bullet time clip, you’d discover that some images have been taken at barely completely different moments in time – at the very least if there may be quick movement in entrance of the digicam.

So, as an alternative I used the set off inputs of the Canon cameras. These are pretty easy: It’s a smaller TRS audio jack with a standard floor and two contacts that management the autofocus and the shutter. These two contacts are pulled as much as 3.3V by the digicam and in the event you join them to floor they sign the digicam to focus or to set off, respectively.

If you wish to construct a correct answer, you’d now design a little bit circuit for every digicam that decouples this electrically by way of optocouplers which in flip you management by way of some easy transistors and a GPIO pin of the microcontroller of your alternative. In case you are lazy, you merely join all set off inputs in parallel on to the GPIO pin, set it to open drain mode to keep away from it combating with the digicam’s logic degree and let it drive all twelve pins to floor by way of a standard connection.

I selected the lazy answer.

The benefit of that is that you should use low cost audio splitters and a bunch of low cost audio cables to attach all twelve cameras. Every little thing, together with the GPIO connection, is simply linked in parallel.

The drawback is electrical points as all digicam logic ranges are linked by way of their pullups and all grounds are linked by way of the set off cables in addition to the USB spaghetti and dummy batteries with their voltage converters and USB chargers. You’ll be able to inform that this isn’t how these triggers are meant for use while you discover that every one cameras set off randomly if one of many cameras is turned off. That is {an electrical} nightmare and doubtless additionally a part of the rationale that the USB bus resets once I activate the lights. I can not actually advocate doing this. …but it surely works.

Oh, the code for the Pi Pico in fact is so simple as it might get, but when it helps you may get it from my github repository.

Bluetooth push buttons

An element that I’m really considerably pleased with are the large push buttons. Not as a result of they’re such an intricate design, however as a result of they’re principally a spontaneous answer that labored completely. I left them for the tip of the mission considering that I simply want so as to add cables and join them to one of many many GPIO pins of the Pi Pico that additionally controls the shutters. However once I acquired to that time I used to be unsure on the place the buttons can be positioned on the marriage ceremony reception.

So, I spontaneously determined to make them wi-fi. And since I’m not a fan of maintaining a inventory of Li-Ion batteries ^{and in addition needed to have the ability to have spare batteries out there if essential, I needed to make use of good outdated AA batteries. So, I checked my inventory of microcontrollers, dominated out the ESP32s that are a nasty combine with AA batteries and located the Raspberry Pi Pico Ws that I purchased with one other electronics order and had not used but.}

These are low cost, can simply run on two AA batteries and have a Bluetooth module on board (just like the ESP). They’re additionally small and simply match into the buttons along with the batteries. Solely downside: Their Bluetooth module has solely been applied lately and it’s nonetheless a bit difficult to get this arrange. Additionally, Bluetooth is presently solely out there within the C SDK. However as soon as I figured it out I had two massive push buttons, operating on AA batteries all night time lengthy. They connect with any machine that helps Bluetooth Low Power as a traditional HID interface, i.e. they act as a traditional Bluetooth keyboard that solely has a single button.

Solely dangerous information is that the licenses for the Bluetooth instance that I used haven’t but been tailored by the Raspberry Pi basis. By that I imply that my code is predicated on hid_keyboard_demo.c of the Blue Kitchen Bluetooth stack, which is presently solely referenced by the Raspberry Pi Basis’s pico-examples repository. Whereas some rumors communicate of an upcoming maker-friendly license, the demo is presently solely out there below the Blue Kitchen license, which explicitly prohibits any redistribution for industrial functions. Since I obtain advert revenues for my initiatives (i.e. Youtube) I can not declare that there isn’t any industrial function and therefore I’m not allowed to share my code at this level.

If the code is ultimately launched below a extra permissive license, please let me know and I’ll fortunately share the modifications I made.

Till then, it isn’t too difficult to adapt hid_keyboard_demo.c. Join the push button such {that a} GPIO pin is linked to floor by the button, allow the inner pullup of that GPIO pin and modify the demo such {that a} keypress is distributed when the GPIO pin goes low.

Lights

Final however not least, you can not neglect the lights. On one hand you need your shutter velocity to be brief sufficient to keep away from movement blur from leaping company. However you additionally don’t need to use any auto-mode of the cameras. You need to keep away from auto-focus, auto-exposure and auto-whitebalance, as a result of the cameras would get completely different outcomes and the photographs from every digicam can be barely completely different, which in flip would result in flickering when enjoying them again in sequence.

So, it’s important to manually focus all lenses to a hard and fast spot and also you both must set the publicity and autobalance by way of USB for all cameras and mechanically adapt it to altering mild of the setting because the solar units – otherwise you deliver managed lights that dominate the opposite lights, so you possibly can work with a hard and fast publicity and whitebalance by way of the whole day and night time.

I already had a choice of video lights from the Aputure Amaran sequence and introduced a 200d (200W COB LED mild with a light-weight dome connected), a 60d (60W COB LED mild with an umbrella), an HR672C (bigger LED panel) and two F7s (small LED panels). That received’t impress knowledgeable videographer, but it surely’s a good assortment for a hobbyist and nonetheless I might discover some colour shifts when the solar hit the home windows of the room throughout sundown.

Oh, and don’t neglect to consider the impression on the precise marriage ceremony reception. On this case I used to be fortunate as I might arrange the video sales space in a separate room that was not used at the moment and everybody grew to become curious due to the intense white mild that got here from the door to the opposite room. However in case you are in the identical room because the dance flooring, folks is not going to be joyful in the event you kill the temper by bringing your personal private solar with out shielding it by some means. Simply sayin’.

Software program

Effectively, that was the tough half. In distinction to another initiatives, determining a budget answer and getting all of the {hardware} was certainly extra time consuming than implementing the software program. In addition to the 2 minimal firmwares for the Raspberry Pi Picos (the digicam set off and the push buttons) the software program solely consists of a little bit of Python code, which you’ll be able to seize from my github repository.

As talked about above, the mind of the bullet time video sales space is an outdated Dell XPS 12. That is positively not a really perfect machine right here as it’s an older convertible laptop computer with out notably spectacular processing energy. In actual fact, this is perhaps one of many worst laptops I ever owned since I by no means actually used it in pill mode and it had quite a lot of shortcomings while you consider it as an costly laptop computer^{. However it was not in use and had considerably extra processing energy than the Raspberry Pi 3 that I attempted to make use of first.}

The factor is that this machine reveals the interface to the company, which is both a easy countdown or an idle loop of beforehand recorded bullet time clips from different company. However it additionally has to retrieve the images from the cameras, report the stream from the HDMI grabber and convert the images and that stream into video clips for a preview and that idle loop. On the Pi 3 it took greater than a minute to create a 720p preview whereas the company waited to see what they simply recorded. On the XPS 12 it takes 20 seconds, which might nonetheless be improved with a more recent machine, however which is bearable for the company.

The conversion to video clips shouldn’t be a easy concatenation in ffmpeg. To ensure that the bullet time impact to look good, the cameras must be aligned completely, which is almost unattainable with a budget mount answer that I picked. Additionally, it’s important to anticipate that the alignment is not going to stay good all through the whole marriage ceremony reception as company may accidentially stumble upon cameras^{. So, as an alternative of making an attempt to attain an ideal alignment, I made positive that the focal size of the bullet time cameras is a bit shorter (i.e. wider viewing angle), in order that I can align and crop the ensuing photos later. This is identical as picture stabilization for a video with the profit {that a} misaligned body doesn’t include further movement blur. So, I used ffmpeg’s picture stabilization for the clips that have been generated on-site (preview and idle loop).}

The filters in ffmpeg additionally got here in helpful to create what I name a “Pseudo in-wall body”. That further blurred body on the location the place the digicam can be contained in the wall, which I discussed earlier. That is merely the picture from the digicam closest to the wall, shifted barely in order that the wall is within the heart of the picture. A powerful directional blur then masks the truth that the angle continues to be removed from the wall and solely leaves a wall-colored smear that sells the concept of the movement blur that you just may see in the event you might really transfer by way of the wall.

Your entire factor is applied in Python and makes use of gphoto2 to speak with the cameras by way of USB and an ffmpeg-wrapper module to generate the preview clips in addition to the upper high quality 1080p clips which can be proven whereas the sales space shouldn’t be getting used. The interface nonetheless is applied in Flask and proven in Chromium. The rationale for that is that the video gamers in webbrowser are among the many finest gamers by way of efficiency and frame-precise playback. For the reason that clips are proven randomly throughout the idle loop they must alternate between the mirrored and common model and to be able to promote the impression of the digicam transferring by way of the wall, the subsequent clip has to start out playback exactly on the final body of the earlier clip. This may be achieved with two HTML5 movies that alternate their playback state, in order that one can preload the subsequent clip whereas the opposite one is seen and enjoying. With one of many gamers being mirrored with a easy CSS transformation and with none noticable efficiency value, the alternating flipping comes naturally on this system.

Put up-processing

Now, there may be one final step lacking to get the bullet time clips from the preview above. The ffmpeg model solely generated a reasonably generic picture stabilization by making an attempt to stabilize the whole picture, which incorporates countering the obvious rotating movement of the digicam. As a substitute we need to stabilize the central level round which the digicam strikes. That is one thing I needed to do manually in put up utilizing DaVinci Resolve. I used a easy tracker and a bullet time clip by which an individual stood fairly exactly within the place that ought to be the pivot level for the digicam rotation. I tracked some options on the individual and stabilized them whereas additionally zooming into the footage barely to keep away from black corners across the repositioned photos.

There is no such thing as a purpose to do that monitoring for each clip, as the answer of the reconstructed digicam movement can merely be utilized to all different bullet time pictures so long as the cameras haven’t been moved. So, I solely had to do that thrice for the whole footage from the reception when a visitor bumped right into a digicam and adjusted its alignment. In the long run there have been some cameras that have been so misaligned that black borders have been now not avoidable and I masked this with a blurry scaled copy of the orignal picture behind the stabilized one.

One other essential processing step in DaVinci Resolve is including further frames. The one second bullet time transition generated with ffmpeg on-site already appeared fairly good, however with optical movement estimation it’s attainable for a lot of clips so as to add virtually good further synthetic frames. So, I arrange a slowed down model with Resolve’s Time Warp characteristic, which doesn’t work for each scene and typically creates apparent artifacts, however which helped to essentially deliver out the bullet time impact for scenes on which it labored properly.

In the long run my cousin’s company recorded greater than 100 clips, which I needed to edit into an extended video. Fortunately, DaVinci Resolve will be automated with Python, so I set it as much as mechanically generate stabilized variations of all recordings with completely different quantities of further manmade frames. Which means that I had a set with completely different variants of every clip, so I might decide which model appeared finest and in addition which had the best period to match completely different music tracks. So, in fact, not each clip ended with a bullet time transition as sluggish as proven within the demo above. In the long run, no one would need to sit by way of a video with 100 of these, but it surely helped to showcase some actually cool transitions with airborne children, flowing hair and flying objects^.

Conclusion

At this level I’ve to say that the ultimate video labored out even nicer than I had hoped for. In actual fact, the half that bugs me most in the long run is that this ugly wooden panel wall within the background actually downgrades the ultimate look, however that might not be helped. If there’s a subsequent time (as in one other event, not as in that very same cousin marrying once more) I ought to put together a backdrop. Earlier than the precise marriage ceremony I used to be actually fearful that I might spend quite a lot of time debugging and fixing issues as an alternative of celebrating with my household, as a result of there have been so many issues that failed throughout checks. In the long run there are 13 cameras in a reasonably naive electrical setup and if any one in all them acquired caught or had every other kind of downside, the pictures can be ruined. I needed to take care of unfastened reminiscence card covers that turned off a digicam, a lose contact in one of many dummy batteries, some cameras dropping out as a consequence of a nasty USB cables and naturally all of the troubles I had till I had sufficient energy provides to get a considerably secure voltage when the cameras are triggered.

I acquired actually fortunate that none of this occurred on that exact day. I had included a easy restoration code that detects unresponsive cameras and tries to reconnect the USB hub with all of the cameras whereas warning the company to attend a minute or name me if the problem persists. In accordance with the recordings and what I heard from the company this occurred as soon as, however I didn’t must personally are inclined to it even as soon as.

Nonetheless the purpose is that you shouldn’t attempt to set this up to your personal marriage ceremony. Somebody with some spare time and the suitable information ought to be able to spontaneously sort things, which often doesn’t apply to the bride or groom. In order for you this to your marriage ceremony, ask a nerd pal to take care of it and if you wish to construct this for a pal, just remember to have time to make things better on website.

But when it really works, this can be a improbable various to the normal picture sales space. You’ll be able to ensure that company have by no means seen one thing like this earlier than (properly, except my Youtube video turns into extra succesful than I might anticipate), they may have quite a lot of enjoyable posing in entrance of the digicam array and enjoying with the bullet time impact (particularly later within the night) and the joyful couple actually enjoys watching the end result and sahring it with their company after the marriage.