Introduction to video for acoustic engineers <8th: Live distribution case

大阪・阿倍野の音響会社 Corporation's sound（ゆいおん）

"I originally came to Osaka from Okayama to become a musician, so I wasn't really interested in the stage. I thought it was a musical or something uncomfortable (laughs). However, at Osaka University of the Arts, I majored in the stage sound effect course, became involved in theater, etc., but I was addicted to it. Like the sound itself, it is very interesting to create something with the whole team. Well, I thought it might be because I was able to meet a good friend who came in contact with the front / back, but after graduation, it feels like an extension of a university, freelance and sound. I came to work. At the age of thirty, I met Baba (editor -in -handed sound engineer, Takako Baba), and I was lucky enough to be able to work alone. So, in 2016, it became incorporated as a sound with five staff members, and continues to the present. The work I have been receiving is really various, based on play, musical, ballet, dance, and concert sounds, events, etc. I also do external work, theater management, etc., and the office also has a simple studio space, and I also undertake work such as sound effects and composition / arrangement. This is not to be operated here. There is no, but from various people, "Can't you do this? "I say that the range of work is expanding more and more. I also work on TV -related work, wireless operations, and pong effects, so if it is related to the sound. I do anything "(Mr. Fujimori)

"The fun and homely atmosphere is a major feature of our company. Some people don't like this kind of friendly atmosphere, but if you have this feeling, we will ask you again. We will. The repeat rate is outstandingly high, so many people may be looking for a homely atmosphere (laughs). There is no particular reason for many female staff, so even if you recruit, from men. There is no application. Our job is not a feeling of loading line arrays, so it may not be very attractive for boys who go to a vocational school with acoustic. Our company is characterized by the atmosphere, but the price is not cheaper than other companies. I dare to do so and don't want to compete with the price. After that, the price will be standard, so I am careful about setting the price. (Mr. Fujimori)

Introduced VR-4HD in April last year and started live distribution / recording work

"I've been interested in video for a long time, and two years ago, I opened a YouTube channel as part of the branding of the company. I haven't disclosed any major content so far, but through the YouTube channel.I hope that the number of people who are interested in our house will increase. There was a Roland video switcher, V-1HD, which was introduced for switching video at the outside site, and Baba is a camera as a hobby.So, I feel like trying to start something new. But I didn't know the difference between "I" and "P", and I bought an HDMI cable on Amazon.It was an unknown manufacturer, and it was at the level of "OK because it was reflected for the time being" (laughs).

"I didn't have much knowledge about live distribution, but in the actual work, I thought that the gap between the video and the audio and the sound pressure at the time of distribution would be a problem.I thought it would be nice to have a total compressor in the output of the audio mixer and the output of the audio mixer, so I decided to introduce the All-in One VR-4HD. "

Online marketing conference that became the first live distribution site

"As for the audio, the voice of the moderator picked up in the pin microphone and the voices of consumers who made a microphone via the audio interface (Roland Rubix24) with the audio mixer. I sent it to the VR-4HD, but this was so hard. The sound must be sent in a negative one, and most of all, the sound quality of Zoom is not good. Is it the best part, it's the hardest part. And what you need to be aware of in ZOOM is that the handling of the sound depends on the version. Sounds may be interrupted, the volume of volume will change, the noise of the background will become noticeable ... This is still a part that must be noted. Even though it was okay, I was hit by an unknown cause that the sound would not come as soon as it became a production. "

"I was free to stop work, so I invited a junior musician of the Osaka Geidai era and planned a concert., I decided to cooperate. The junior gathered a Cuban vocalist and friends, and held a concert for about 60 minutes with seven performers. It seems that everyone is doing it.I was interested in the live distribution of music, so I tried to distribute it for free using YouTube Live "(Mr. Fujimori).

"I set up four cameras to put all of them, but it was my first experience to operate the zoom ring on site, and I had no knowledge of painting, so I had a hard time.I did it. I was going to stop, but I was going to draw, or it would not be familiar to my body if I moved it, so it would be a messy video. I attached to the camera and VR-4HD.I operated with an interaction with the water falling, but I can't see it now because it's embarrassing (laughs).

"The first thing that was difficult to try the concert live distribution was the volume and sound pressure. If the PA mix remains, there is too much difference between the vocals and MC, so it is difficult to listen to, and how much level is.It was the best way to deliver live distribution. Unlike PA, unlike PA, if it is a live distribution, it will not carry how the volume is raised, so I remember that everyone said, "It's different."(Mr. Mizu)

"The content of the job requested was various, but I felt like I got the tips for the camera installation position, switching, and delivery mixing. In November, the organizer of the event.As the subsidy of the Agency for Cultural Affairs has been applied, the work of live distribution has increased more and more. Events involving subsidies must be recorded as a record, so the recording work is quite good.I did it. If I introduced a VR-4HD in April last year and did not plan a concert on my own, I wouldn't have worked so far, so it was worthwhile to work hard and work on live distribution.I think "(Mr. Fujimori)

Live distribution settings and operations

▶ ︎ 1: Camera setting

"The four cameras are the front of the stage with the AG-CX350, which can zoom the most, and the AG-GH4U is set on the left and right sides or drawing drawing on the stage, such as the hand of the piano or just beside the drums.There are many. Mirrorless SLR AG-GH4U is a stylish picture with a blurred background even if people are not always wearing it, so I use it at the point I want to do. "

"The number of cameras used on site depends on the content of the event. In the case of solo singer live, even if you set up four cameras, you will eventually use only two. Conversely, many musicians at the same time. In the event that plays, the number of cameras is also required. Also, the staff on the site is basically a person who operates it on the camera and at least two people who operate the AV mixer / video switcher. It will be. It is difficult to operate the camera if possible, if possible, and it is difficult depending on the site. Recently, the camera operation is often left to young staff, but when it comes to the switching side, it feels a lot. There is. If you are not used to the operation, you will inevitably move it quickly, so I think that it will give you an atmosphere just by moving it slowly. "(Baba).

"Camera and video switchers are connected by SDI at large sites, but they may be connected as HDMI in compact sites such as seminars. Regarding the sound, we mix with basic audio mixer.In some cases, you get 2 mixes from a PA shop and mix air with a built-in audio mixer with a built-in VR-4HD. In compact sites such as seminars and meetings, the sound is often summarized only with VR-4HD."(Mr. Mizu)

▶ ︎2: Operation of video

"The basics of AV mixer operations are the switching of the camera. If it's a music concert, switch the camera according to the person who is singing and played on the stage, but it's a guitar solo.I do not reflect the guitarist forever, but I operate it with a feeling of switching once to two bars. It is better to switch once every few seconds. Cut when the song tempo is fast,Slow songs such as ballads are basically switched by fade, and the fade time is adjusted according to the tempo. VR-4HD should be able to switch the fade time instantly. "

"AV mixers other than switching are only PINP (picture -in pictures) at the time of the seminar. After that, I sometimes synthesize the distant people with a chroma key. Prepare green back.I will have them compose as if they were talking side by side with the people here, but if you do not come out well due to the shade of the green back, or wear blue light cut glasses, the green will be reflected.You need to be careful because your eyes may get out of your eyes. "

▶ ︎3: Audio mix

"The way of making sounds is completely different between ordinary PA and live distribution. Live distribution does not require a dynamic range like PA, so use a compressor to keep the range down so that you can hear the words well.I do. The small voice is loud, and the compressor is always hitting. Of course, the master has a total limiter inserted so that it does not distort at the peak. To produce the atmosphere of the site.Air is important, but it's surprisingly difficult to mix well. For example, if you set a gun microphone for the audience, two or three people sitting near the microphone.I only pick up applause, so I try to stand a little far away. "(Mr. Baba)

▶ ︎4: Advice to those who are starting to start

"If you want to prepare the equipment from now on, I think that the video switcher should be an AV mixer. It is convenient to be able to handle audio and video with one unit. If it is a small site, it will be recorded along with live distribution.In many cases, AV mixer is also advantageous in that regard. The single video switcher also has an audio function, but there is no stereo audio input or fader on the XLR terminal.That's right. Multi -band compressors and delays are also built -in, and the reverb knobs are also shown firmly, so it is very easy to operate as a sound shop. If you want to start live distribution, AV Mixer is recommended. "(Mr. Mizu)

"I like the VR-4HD that has a built-in large touch monitor. Many video switchers can not confirm the video unless the external monitor is connected, but VR-4HD is the main unit. You can only see the 4-part screen. When you have just started live distribution, you are worried that it is really reflected, but you can check the VR-4HD with your own eyes. It is safe. It is good that the operation system is not two -stage. It is easy to understand and does not make a mistake in the operation. And very good is that HDMI's INPUT 4 has a scaler. Video switchers of other companies. It will not be reflected at all if the format is not suitable, but VR-4HD is displayed firmly with any signal. Some personal computers are output only in inter-race, so this scale. The function is very encouraging "(Mr. Baba)

"I think that it is different if there is a good camera for a camera. If it is a consumer machine, there is a limit to the brightness and color no matter how much it is, but there is one good camera and it is pulled.If the picture is beautiful, it will be quite good. "(Mr. Mizu)

"Conventional aircraft like XA55 is easy to use for amateurs because it is easy to focus, but it will be a picture like a TV for better or worse. If you want to introduce a camera in the future, the manufacturer is as much as possible. It is better to arrange it. If the manufacturer is different, the color temperature will not be the same color. This is also our task. And I want to say loudly. However, it is better not to get a tripod (laughs). Cheap tripods are absolutely jerky, so you will definitely be worried. If it is a tripod of about 100,000 yen, the movement is very smooth. So, it's different. Similarly, it's better not to get stuck in the HDMI cable or LAN extender. I end up buying it again (laughs). In addition, communication between staff is important on site, so income is also essential. "(Baba)

At the end

"The interesting thing was that no staff had no knowledge of the video. Everyone was doing it while trial and error," Oh, not this, "it was very interesting. I think this situation will continue, so I'm glad I started for the time being. And now we are planning a study session for live distribution. So, asking the TV audio man for a lecturer and asking you to give a lecture on how to make a distribution voice. Similar online seminars are occasionally held, and I have taken the course. However, the content is not enough for a person who is performing sound in business. It does not need to explain the direction (laughs), so how much and how much sound pressure should we actually use at the actual level. I want to know. I think there are many people who want to know such information, but there is not much technique, so I would like to plan myself.・ I will rent a hall and do it in an offline and online hybrid format, so if you have just started live distribution or those who are starting to start, please take the course. "(Fujimori).

Supervision: Roland Co., Ltd.

Inquiries about AV Mixer VR-4HD: Roland Co., Ltd. TEL: 050-3101-2555 (Customer Consultation Center) https: // Proav.roland.com/jp/

Corporation's sound