Masking PTZ Camera Movement Between Presets
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- Опубліковано 19 чер 2024
- Complete tutorial on our blog - live.ptzoptics.com/videos/mask...
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0:00 Introduction
1:28 Tutorial Level: Advanced
1:41 What is an IP Address?
2:14 What is a Camera Preset?
2:42 What is a Video Playlist
3:41 What is a Stinger?
5:06 What is a Tally Light?
5:46 How to mask PTZ movement
7:37 Choosing Camera Presets
8:09 Choosing Speed of Presets
9:13 Enter the Blank Stinger
11:22 Optional Automated Playlists
A stinger is an animated transition used in video production. Stingers are often a sequence of images, overlaid over a video input with a cut and transition point made to seamlessly transition various camera shots or video inputs. The “blank stinger effect” allows PTZ camera operators the ability to mask PTZ camera movements in between PTZ preset positions and inside automated camera playlists like. Today you can use automated camera playlists to run through a loop of PTZ camera presets for multiple cameras. We have found this to be a great “hands free” video production solution enhanced tally lights allowing our on-screen talent to know which camera is live instantly. Perfect for small teams and situations where the on-screen talent is also the video producer.
Usually we will keep our PTZ cameras on static positions and avoid rotations with multiple PTZ positions per camera in a single playlist to avoid capturing actual PTZ camera movements. But using the blank stinger to mask the pan, tilt and zoom movement will effectively leave our viewers none the wiser and a video production with two PTZ cameras could look like 8 camera angles easily. In-between each camera or input in our playlist we can use transition effects. Usually we would use a 1500 millisecond fade to nicely transition between various cameras. Using a blank stinger we can trigger the PTZ camera movements before the transition happens effectively masking the camera movements.
As you can see, the vMix “Playlist” feature is right next to the “Stream” and “Multi-Corder” buttons. You can add cameras to your playlist for automation by clicking the cog next to the playlist button. If you want to mask the movement of an automated pan, tilt, zoom camera preset you will have to select a stinger set for the average time it takes the camera to move in between your selected presets. Depending on your setup we have found 50-75 frames is more than enough time to completely mask the PTZ camera movement in-between a camera transision. We have also found that 35-50 frames will leave a short “easing” effect showing just the ending of the Pan, Tilt and Zoom movement from the camera.
If you have never made a stinger before we have a free download you can use. A stinger is essentially an image sequence. Stingers are used to transition between multiple cameras or video clips with cool looking transparent overlays. A good stinger will transition between two video inputs with a smooth transparent overlay shifting between each input to create the illusion of transparency. In this example, we will use the vMix Video Tools application to convert a blank .AVI file into a sequence of images we can load into vMix.
Once your playlist is setup you can choose the duration each input will stay active until transitioning to the next input and the transition length. When you choose a stinger in vMix, it needs to be configured in the “Overlay section”. Here you have the ability to choose the stinger length and the cut point. The cut point is the place in time where you want the the stinger to transition. In order to mask the PTZ camera movements we really only need roughly 1-2 seconds of time (30-60 frames) before each transition.
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Thanks, Paul! You had a real brainstorm there. And yes it really helps the movement.... Rowby
How can I get more support and how can I get more details ?
?
is there a demo showing how precise the movement of start and stopping a pan and tilt is? I cant find anything on the speed and to see how slow we can get it : ( Im wanting to pan smoothly with a moving subject on stage without wanting to switch angles everytime. Or is this a feature you would have to find on higher end camera/rigs ? Thank you!
Hi Joel, I would suggest checking out our live shows, we don't have any dedicated videos on camera movements. Maybe the Move 4K demo.
Demo: ua-cam.com/video/l5REaZRZjSc/v-deo.html
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Hi Paul. Great solution to the challenge I was facing with my two 12x cameras - for the life of me though I cannot find your blank stinger. I’ve looked through all the Udemy downloads. Help please!!
I found the stinger files here - www.ptzoptics.com/landing/stinger.html. After unzipping I had to use 'ffmpeg -framerate 30 -i blank00%03d.png -c:v libvpx-vp9 -b:v 0 -crf 15 blank_stinger.webm' to make a video file.
@@GlennEngel FYI All, this link no longer results in a page with the blank stinger.
@@pquk Has anyone figured out where this blank stinger is these days?
You can build them for free in Canva
Canva: www.canva.com/features/video-transitions/
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What are the benefits of using this over a dedicated video switcher?
I would still use a video switcher, over this.
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Hi Paul,
Can you help me with my one 20x ndi camera in OBS?
I like to mask the camera Movement, but I can only find a lot of blank PNG files.
How to get the stinger in OBS?
Hello!
Certainly! To mask camera movement in OBS with a "stinger" transition (which uses a custom video or animation to smoothly transition between scenes), follow these steps. Note that "blank PNG files" won't work for this purpose; you need an animated transition file (typically a .webm or .mov format).
Step 1: Acquire a Stinger Transition
Create or Download: You need an animated transition file. This can be created using software like Adobe After Effects or downloaded from various online sources where custom stingers are available.
File Format: Ensure the file is in a compatible format (usually .webm for transparency support).
Step 2: Adding the Stinger Transition in OBS
Open OBS: Start OBS Studio on your computer.
Go to Scene Transitions: In the lower-right corner, you'll find the 'Scene Transitions' section.
Add a Stinger: Click the '+' icon to add a new transition and select 'Stinger'.
Choose Your File: In the properties window for the stinger transition, click on 'Browse' and select your stinger file.
Set Transition Point: This is the timing when the switch occurs. Adjust the 'Transition Point' (in milliseconds). It's when your stinger covers the whole screen, so the actual scene change happens invisibly behind it.
Preview and Adjust: You can preview the stinger and adjust the timing and other settings as needed.
Step 3: Using the Stinger Transition
When switching scenes in OBS (for example, moving from a full-screen view of your 20x NDI camera to another scene), the stinger transition you set up will automatically play, masking the camera movement.
Step 4: Additional Tips
Test Your Settings: Before going live, test the transition several times to ensure the timing and appearance are as you want them.
Custom Creation: If you’re creating a custom stinger, ensure it matches the theme and style of your stream for consistency.
Optimization: Be mindful of the file size and length of the stinger to ensure it doesn’t impact the performance of your stream.
Using a stinger transition in OBS is a professional way to enhance the production value of your stream and create a seamless viewing experience, especially when changing scenes or camera angles.
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Interesting concept for Vmix. Is it possible to do this in Wirecast_
Hi Mike, this is possible by using stingers to mask the movements. You can now add your custom stinger transitions to Wirecast 11 and higher. To add your created or downloaded transitions to Wirecast, click Switch > Manage Stinger Transitions in Wirecast.
I did watch your video, but I'm still not sure I understand just what you are calling a "stinger". I'll have to check into it. thanks.
@@PTZOptics
But still is it called ptz cause the presets will do pan first tilt and last zoom ,why can't all 3 happen at same time? I'm used to using the robotic camera heads where the presets will do all,you can even record a path to be used as a preset....also can and will the ip controller ever have like a accelerometer feel to the joystick so the outside movements are slower than the inside ones?
Joey Baron - I have to do some more testing but I believe slowing the Zoom function and increasing the pan and tilt may help. Also, if you are masking the PTZ you may only care about the ending movements.
But even in manual joystick you can't do all 3 at same time,? Maybe I'm wrong
Yes, they can do all at once. We just checked.
Yes, you can, by the connection by another way indeed, we can also do it
If you need, you can contact me, I will show to you, qiang@xanxusvision.com
Free Udemy course link goes to page not found.
Hello!
Here's the link: www.udemy.com/course/live-streaming-cameras/
hi can i have a legit link for vmix ty for response
Just Google it.
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