Category: Software

FFmpeg to infinity and beyond!

My love for FFmpeg knows no bounds and whenever I need to do some slick slicing & splicing I always go with FFmpeg (or Avidemux).

Command line is bash and you’ll obviously need FFmpeg.

Turning a video into a high quality GIF

Turning a video that is over 256 colors into a GIF is an impossible task if you wish to keep all the color information, the GIF format just isn’t designed for that at all.
But what if there was a way to still convert the video into an acceptable GIF?

ffmpeg -i input.mp4 \
    -vf "split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" \
    -loop 0 output.gif

It is possible to generate a color palette with FFmpeg and use it (thanks to a SuperUser post).

The explanation for the video filters used boils down to:

  • palettegen & paletteuse generate and use the generated custom palette;
  • split helps making this command a one liner because the usual way would be to output the palette to a file before using it;
  • loop set to 0 means we have a repeating GIF, otherwise it will loop with the provided number (and no loop is playing only once).

With a complex filter it’s possible accelerate the gif too:

ffmpeg -i input.mp4 \
    -filter_complex "split[s0][s1];[s0]palettegen[p];[s1]setpts=0.5*PTS[s1_fast];[s1_fast][p]paletteuse" \
    -loop 0 output.gif

But my source is high resolution, can I scale it down? Yes!

ffmpeg -i input.mp4 \
    -vf "scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" \
    -loop 0 output.gif

The scale filter can be set to keep the aspect ratio with -1 like in this case with 320:-1 but that’s not all ! We can also reduce the framerate by prepending fps=10.

While I understand that 10 FPS is pretty low, this is GIF territory so it’s not the best thing ever en 2024+.

Keep in mind that GIFs at 60FPS don’t perform well and are pretty heavy on space. So that why you should reduce the framerate with the -r parameter or in the -vf parameter.

Scroll text on a video

This is one part of the thing I do on the music videos I download from YouTube to use while I’m streaming (of course the audio never makes it in the VOD for obvious DMCA reasons).

For the story I decided to display part of the video on my overlay but have the title scroll (when it’s wider than the video). I won’t be sharing my script but I will be sharing the command line I use with FFmpeg to make text scroll.

# Do not forget to escape quotes, commas and colons too
TITLE="My super song\\: Ayyy LMAO - By the \\\"Senpai\\\""

ffmpeg -i input.mp4 \
    -acodec copy -vcodec h264_nvenc \
    -vf "drawtext=text=\'${TITLE}\':fontfile=./NotoSansJP-VariableFont_wght.ttf:y=(h-text_h)/2:x=w-mod(max(t-0\\,0)*(120)\\, 2*(tw+150)):fontcolor=ffcc00:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#000000AA" \
    -b:v 8M -rc vbr -cq 19 -preset slow -profile:v main \
    output.mp4

To avoid a gap in the scrolling it’s possible to add a second filter that will be delayed to avoid having a small gap:

# Do not forget to escape quotes, commas and colons too
TITLE="My super song\\: Ayyy LMAO - By the \\\"Senpai\\\""

ffmpeg -i input.mp4 \
    -acodec copy -vcodec h264_nvenc \
    -vf "drawtext=text=\'${TITLE}\':fontfile=./NotoSansJP-VariableFont_wght.ttf:y=(h-text_h)/2:x=w-mod(max(t\\,0)*(120)\\, 2*(tw+150)):fontcolor=ffcc00:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#000000AA,drawtext=text=\'${TITLE}\':fontfile=./NotoSansJP-VariableFont_wght.ttf:y=(h-text_h)/2:x=w-mod(max(t-(tw+150)/(120)-0\\,0)*(120)\\, 2*(tw+150)):fontcolor=ffcc00:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#000000AA" \
    -b:v 8M -rc vbr -cq 19 -preset slow -profile:v main \
    output.mp4

Of course you’ll need to encode the video and have the appropriate fonts installed for this to work. The original audio has been kept because we do not need to re-encode it.

Let’s breakdown the filter element by element as it is really messy:

drawtext=
  text=\'${TITLE}\'
  fontfile=./NotoSansJP-VariableFont_wght.ttf
  y=(h-text_h)/2
  x=w-mod(max(t\\,0)*(120)\\, 2*(tw+150))

First we use the filter called drawtext and it will take multiple parameters:

  • text will be the input text, as we are passing it from the command line we need to escape the quotes, colons and commas.
  • fontfile is a relative path to a font, in my case I went with NotoSansJP as it has support for Japanese characters too;
  • x & y are the position of the text and instead of using a static position we pass a formula:
    • w stands for the width of the video;
    • tw or text_widthis the width of the rendered text;
    • text_h or th is the height of the rendered text;
    • t represents the timestamp in seconds and can be used for math operations, in this case we use it make the text scroll at a proper speed;
    • Doing (h-text_h)/2 simply means we are centering text horizontally.
  • The other parameters are not really important.

The trick to having scrolling text with no gap if by having the same filter repeated a second time but with a delayed x parameter as such:

x=w-mod(max(t-(tw+150)/(120)\\,0)*(120)\\, 2*(tw+150))

In this case the 150 we had as the second parameter to mod is used in the first parameter with the text width parameter. In fact there’s no delay, the text is just positioned off screen. The following values can be called:

  • 150: Margin;
  • 120: Speed;
  • 0: Start time offset.

For a simplified x parameter (pseudo code explanation):

MARGIN=150
SPEED=120

# First title
x=
  w-mod(
    max(t, 0) * (${SPEED}), 2 * (tw+${MARGIN})
  )

# Second title
x=
  w-mod(
    max(t - (tw + ${MARGIN}) / (${SPEED}), 0) * (${SPEED}), 2 * (tw + ${MARGIN})
  )

It’s confusing but that’s how it works:

# Do not forget to escape quotes, commas and colons too
TITLE="My super song\\: Ayyy LMAO - By the \\\"Senpai\\\""
MARGIN=150
SPEED=120

ffmpeg -i input.mp4 \
    -acodec copy -vcodec h264_nvenc \
    -vf "drawtext=text=\'${TITLE}\':fontfile=./NotoSansJP-VariableFont_wght.ttf:y=(h-text_h)/2:x=w-mod(max(t-0\\,0)*(${SPEED})\\, 2*(tw+${MARGIN})):fontcolor=ffcc00:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#000000AA,drawtext=text=\'${TITLE}\':fontfile=./NotoSansJP-VariableFont_wght.ttf:y=(h-text_h)/2:x=w-mod(max(t-(tw+${MARGIN})/(${SPEED})-0\\,0)*(${SPEED})\\, 2*(tw+${MARGIN})):fontcolor=ffcc00:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#000000AA" \
    -b:v 8M -rc vbr -cq 19 -preset slow -profile:v main \
    output.mp4

In testing it appeared that sometimes long titles might glitch out a bit and not have a background. Please do some testing and tweak the commands as needed to fill your needs.

Two scrolling titles might not be needed anyway!

Resize the video

Part two of what I do the YouTube music video I use on my stream, I resize them to an appropriate size so it doesn’t take all the screen but still keeps the proper aspect ratio.

ffmpeg input.mp4 \
    -acodec copy -vcodec h264_nvenc \
    -vf "scale=640:-1,crop=in_w:120:0:in_h/2" \
    -b:v 8M -rc vbr -cq 19 -preset slow -profile:v main \
    output.mp4

In this case I’ve used my GPU to do some encoding, feel free to encode however you want. The original audio has been kept because we do not need to re-encode it.

You can combine the filter that adds the scrolling text with the resized output but ordering as follows:

  • Resize the video;
  • Use a comma , to separate filters;
  • Add the scrolling text.

It’s important to keep things in order and you’ll have this big fat command that I’ve reworked a bit to make it easier to appreciate:

# Do not forget to escape quotes, commas and colons too
TITLE="My super song\\: Ayyy LMAO - By the \\\"Senpai\\\""
MARGIN=150
SPEED=120

# Font and box parameters
FONTFILE="./NotoSansJP-VariableFont_wght.ttf"
FONTCOLOR="ffcc00"
BOXCOLOR="000000AA"
FONTPARAMS="fontcolor=${FONTCOLOR}:fontsize=70:shadowx=2:shadowy=2:box=1:boxborderw=3:boxcolor=#${BOXCOLOR}"

# Title scrolling
TITLE_ONE="y=(h-text_h)/2:x=w-mod(max(t-0\\,0)*(${SPEED})\\, 2*(tw+${MARGIN}))"
TITLE_TWO="y=(h-text_h)/2:x=w-mod(max(t-(tw+${MARGIN})/(${SPEED})-0\\,0)*(${SPEED})\\, 2*(tw+${MARGIN}))"

# Scaling (+lanczos as an example) and cropping
RESIZE_LANCZOS="scale=640:-1,crop=in_w:120:0:in_h/2"
RESIZE="scale=640:-1:flags=lanczos,crop=in_w:120:0:in_h/2"

ffmpeg -i input.mp4 \
    -acodec copy -vcodec h264_nvenc \
    -vf "${RESIZE},drawtext=text=\'${TITLE}\':fontfile=${FONTFILE}:${TITLE_ONE}:${FONTPARAMS},drawtext=text=\'${TITLE}\':fontfile=${FONTFILE}:${TITLE_TWO}:${FONTPARAMS}" \
    -b:v 8M -rc vbr -cq 19 -preset slow -profile:v main \
    output.mp4

And this was my secret behind the resized, cropped music videos with scrolling text.

Homework: Combine EVERYTHING into a GIF

It’s as simple as adding the full filter for generating the palette and the gif from the palette. I kid you not! But this is your homework on how to make that work: just don’t forget to remove audio and video encoding.

Beyond infinity

I’d recommend to check ffmprovisr which is a very good guide on how to do some things.

As I don’t support AI I can’t really recommend using ChatGPT to write FFmpeg commands. It might help you with some stuff keep in mind that it can be confidently wrong.

Disable NVIDIA overlay only in certain apps

Having the NVIDIA overlay be enabled on unwanted apps can have one of two unwanted side effects:

  • The overlay can’t be used for games: no ShadowPlay recording is possible;
  • A folder will be created in the folder where you save your recordings.

This can get very annoying very quickly when using apps such as Godot, Elgato’s Stream Deck and Wave Link software and such…

NVidia Profile Inspector

To tweak what app should use the overlay you will need the NVidia Profile Inspector.

Select a profile or create one and add the executables to it.

Editing setting 0x809D5F60 and setting it to 0x10000000 will disable the overlay for the given apps. If the setting doesn’t appear you will need to click the button to show the unknown settings.

The overlay should no longer hook into the app on the next launch.

Conclusion

It’s a shame to have to use the NVIDIA Profile Inspector to disable the overlay in some apps.

Source: https://redd.it/89mtzr

Stop upscaling video to 4K60FPS

Updated 2023/01/03: Added a bit about Frieren EP9.

On YouTube there’s always someone using AI to upscale to 4K and interpolate frames in anime openings. Some people think it looks good because it “moves” more and they are wrong.

I like referencing the video of Noodle on Smoother animation ≠ Better animation. You do not need to watch this video to understand this post but I still recommend watching it as Noodle is an actual animator as I don’t plan on just repeating what this video says.
I’ll be using my own words and examples.

What is upscaling?

When it comes to images and videos upscaling is increasing the dimension of the frame. To illustrate this example let’s take a 102 by 102 pixel image and upscale it using Photoshop and Waifu2x:

Click to enlarge

Doubling the image’s dimension does harm the quality of the image by doubling and softening the pixels. The 4 times image is unusable and down right bad.

Waifu2x uses a deep convolutional neural network to try minimize the quality loss and retain the detail from the original image. It works quite nicely bit but it far from perfect. Other AI enhancements can be used to upscale images.

In all the illustrated cases we are taking an image that is 102 pixels by 102 and adding more pixels. The only thing we can do is thus interpolating.

What is interpolating?

Interpolation is a very complicated subject that can be basically watered down to estimating new data based on existing data.

In the case of this post I already referenced interpolating pixels to fill in the blanks when upscaling an image. If we took an image and did not interpolate pixels we would retain the original pixels but spaced out in a grid like this:

Click to enlarge

Since I’m increasing the size from 102 by 102 pixels to 408 by 408 pixels I’ve blacked out the pixels that will have to be estimated. Different sharpening and scaling algorithms will process the images differently and alter the output.
This example is only illustrating what is missing and what needs to be generated.

The same can be explained for increasing the framerate from 23.976 to 60FPS. Wait a second, 23.976FPS to 60FPS. Decimal numbers?

That’s a fun framerate to multiply to 60. Where are my comfy integer numbers? I like whole numbers. Anything that floats is complicated and scary.

Why interpolating DOESN’T work?

If upscaling images with AI can work pretty well, on the other hand the frame rate interpolation doesn’t work.

First of all the video frame rate needs to be constant, if it’s defined as 23.976FPS we would need multiply it by 2.5 to reach 59.94FPS to get as close to 60FPS as possible but it is not a whole number so we will need to alter existing frames while generating 1.5 frames for each existing frames.

And this breaks everything. Here are two 5 seconds sequences taken from the opening of Zom 100 on YouTube.

Original video:

AI enhanced video:

Let’s get the total number of frames the lazy way:

ffprobe -v error -select_streams v:0 -count_packets \
    -show_entries stream=nb_read_packets -of csv=p=0 \
    zom100_original_start_5sec.webm
# 127

ffprobe -v error -select_streams v:0 -count_packets \
    -show_entries stream=nb_read_packets -of csv=p=0 \
    zom100_ai_start_5sec.webm
# 323

If my math is right 323 / 127 = 2.543307086614173 making us close to the 2.5 multiplier. But let’s forget numbers because what really counts is the visuals.

Why is it ugly?

The gist of it is that we a creating new frames based on the previous and next frame while also altering existing frames to target the 60FPS that is being uploaded.

Let’s take a look frame by frame, each origin frame lasts for 2 seconds while AI enhanced frames last for 1/3 of a second. Left and right video isn’t synchronized as the frame rate cannot be divided by an integer value.

Obvious artifacting appears very early on around anything that moves. Sometimes it’s just blurring just like if motion blur (on the bike) was introduced and sometimes the shapes are deformed (such as the numbers).

Another example:

The upscaled image is also sharpened and denoised to some degree which ends up messing up the contrast on the line art.

But 60FPS is nice when gaming

Yes, when playing 3D games each frame is rendered before being displayed on the screen. Videos are different because each frames are already rendered.

This is like the difference between pre-rendered cutscenes and in-engine cutscenes. Pre-rendered cutscenes are designed in a way to be of a certain resolution, frame rate, compression and colorspace.

In-engine cutscenes on the other hand will usually target the game’s resolution, framerate, colorspace without applying any compression. Usually because some game engines will lock the frame rate to a lower value such as 30FPS because of engine limitations bad engine programming and design.

Rendering 30, 60, 120 or 144 frames a second by taking a picture of a 3D scene that is built right before being displayed is the key to fluidity.
Already rendered content will never be able to do such thing because of the missing information.

Real world example from 60 to 23.976 to 60

Here is NieR Automata at 60FPS:

Reducing the frame rate to 23.976FPS makes the motion look less satisfying:

Now let’s interpolate the framerate to 71.92806FPS and limit it to 60FPS with Flowframes that permits me to double or triple the frame rate (not set it to 60 directly) and notice how the video is choppy:

Here are the settings used:

This is exactly what is being done to those anime openings… Disgusting.

Let’s compare the original native 60FPS footage with the interpolated to 60FPS from 23.976FPS:

Click to enlarge
Click to enlarge
Click to enlarge

The screenshots talk by themselves and expression the difference in a much more obvious way, but let’s go a bit further and slow down the video clips while having them side by side and centered on 2B:

Slowed down to 25% does show how bad it gets. Same goes for that Jujutsu Kaisen S2 opening:

It jitters, the text is deformed… I hate it. Anime is not drawn for 60FPS.

Misguided demande exists

Sadly TVs are being sold with some smoothing technology and marketed as good looking. Not sure how people really perceive it as something nice while it should be weirding them out.

I also remember that the Hobbit being 48FPS at the movie theatre was something that did weird out people quite a bit, but was it because of the 3D effect included too? No idea.

NVidia is also working on adding frame rate smoothing to their GPUs when encoding, weird idea…

The reason I made this post is that I’m tired of seeing openings such as Zom100 and Jujutsu Kaisen S2 being upscaled, sharpened to hell and then interpolated to get weird motion and no improvement.

Conclusion

Most people that aim for +60FPS content do so because fluidity is important and enhances the pleasure of the visuals. Sadly most people don’t seem to actually pay attention to the composition and missout on the botched detail and weird movements.

Do I envy people that are not able to perceive what’s wrong with frame rate interpolating? No I don’t. I just think it’s sad that they are missing out on the destroyed detail.

This trend of upscaling and interpolating the framerate will not die anytime soon and this makes me sad because we have some very nice animations that are design for low framerate and will only work like so.

Spoilers ahead but here are some nice animations:

In all of the above scenes we have animations that are not 60FPS and do not need to be. Motion is properly conveyed through direction and effects.

As a closing note I suggest watching Satoshi Kon Editing Space & Time by Every Frame a Painting. At the 4:47 mark they talk about motion, it’s interesting to see how animation can convey more actions with less frames than live action.

Sousou no Frieren EP9

If Japanese animation proved anything in 2023 it’s that anime still doesn’t need to by high framerate. In Sousou no Frieren episode 9 we have multiple fights happening at the same time in the second half of the episode and the animation is perfect.

The fights are either fast paced and smooth or detailed and smooth. No frame is out of place. This is the standard of animation that we would expect from a full blown movie.

Since it’s copyrighted and I don’t want to stretch faire use (especially because Japan doesn’t really practice that) I will only be posting one clip.

Mad House published some tweets to show the behind the scenes for the keyframes:

Those keyframes are so clean the finished version can only be the best:

Full animated scene from Sakugabooru.

Windows 10’s image viewer is trash, bugged and won’t ever be fixed

I’ve been running Windows 10 since the end of 2017 and while it has worked fine most of the time I still get annoyed by the many quirks and bugs that Windows has had over the years even before Windows 10.

One of those issues is the the IME keyboard listing that automatically adds back English US at random times for no good reason, I’ve had that bug since Windows 8 and I want it to just not be a thing anymore. But this post isn’t about this bug.

This post if about the Windows 10 image viewer and how it consistently fails at doing what you would expect from a basic feature such as an image viewer.

Scrolling images through folders doesn’t work

I use the Windows image viewer to browse folder images, it’s integrated into Windows and should be able to handle the kind of files I throw at it such as PNGs, JPEGs and sometimes my CR3 RAWs.

It does need to be perfect when it comes to display images as it is a basic feature of any operating system.

When I open a image from within a folder I usually scroll through the pictures with the mouse wheel. So what’s wrong?

Basically what’s wrong is that if I stop scrolling for a couple of seconds, when I start scrolling the pictures again I’ll be starting back from the picture I first opened in the image viewer.
The image viewer loses track of where it last was. This happens consistently in folders with over 3000 media files…

I’m not the only one

Searching for it brings up a post about the same issue:

The usual response from the Independent Advisor is to reset the apps, then we are told to run DISM and update our system. The Microsoft forums have once again let down the whole world and not one managed to act surprised.

Now I must admit that the wording is not ideal and it also contains another issue that I do not care for. I still want to be able to scroll through my meme collection without going back to the very start and this is kinda forcing me into thinking about what it takes to make a proper image viewer.

I have not done C# in a long time and I think I would enjoy making a lightweight basic image viewer.

IrfanView always works

Back in the early 2000s I came across IrfanView, a graphic viewer that supports many formats and plugins. It’s a very powerful too that can view, convert, batch process and basically save your day when it comes to media files.
It’s a graphic viewer that even plays music! Talk about going above and beyond.

When I open an image I can scroll through the folder’s images with the mouse wheel AND ALSO the previous and next mouse buttons. I could do that on Windows 7, 8 and 8.1. How come this isn’t a thing anymore on Windows 10?!

It also can rotate images based on EXIF data and it just works. The only thing I need it an image viewer that just works!

Conclusion

Windows is a total let down when it comes to basic features but the good thing is that for now we can still install third party soft such as IrfanView, MPC-BE, ShareX and many more.

I hope Microsoft won’t kill this anytime soon but they are kinda hinting at taking control over what can be installed with their Microsoft Store, just by letting such an abomination exist.

I trust Microsoft will do what’s wrong for their consumers because we live in the era of SaaS and never ending advertising.

Export video with alpha channel in Davinci Resolve

A great alternative to the Adobe video editing suite is Davinci Resolve because it’s free (paid version exists, locks just a bit of features).

Exporting in Davinci Resolve

Let’s say you have a timeline with your elements places and transparency set. You will now go to the deliver tab, select Quicktime as the format and GoPro Cineform as the codec.

The most important thing is to select RGB-16 in the type and tick export Alpha.

This is the final step unless you need to publish the file as a WebM.

Convert the MOV to WEBM

When building alerts and overlays, certain services like StreamElements won’t accept the Quicktime file, you will need to convert it to a WebM with the VP9 codec to retain the transparency.

Use FFmpeg with the following command line:

ffmpeg -i inputmove.mov -c:v libvpx -pix_fmt yuva420p -b:v 2000k -auto-alt-ref 0 output.webm

Keep in my you can change the bitrate and increase it by tweaking the value following -b:v.

Conclusion

This small trick is something I spent a long time looking for and I have had mixed results with it. But lately I’ve been getting into preparing custom alerts on StreamElements for my own streams and I was hoping to add something nice.

Adding subtitles to your stream

Ever wanted to subtitle your stream in your language and add one or two other languages with automatic translation? Looks like there’s a tool for that.

Step 1: Setting up a Apps Script (Google)

Setting up the Apps Script start with creating a new script on Apps Script: https://script.google.com

In the editor you will need to paste the following code:

function doGet(e) {
  const params = e.parameter
  var translatedText = LanguageApp.translate(params.text, params.source, params.target);
  const output = ContentService.createTextOutput();
  output.setMimeType(ContentService.MimeType.JSON);
  output.setContent(translatedText);
  return output;
}

The code will need to be deployed by click on the deploy menu on the top left:

The app must be deployed as a web app:

In the form you must let anyone access it:

When it’s deployed you will be provided the app key, this is what you will need for the next steps:

Step 2: Setting up the page

This is where the fun begins. There’s a form that is totally in Japanese that will require a couple of edits to be usable. Go here to start filling the form: https://sayonari.coresv.com/ninshikiChan/20210822_config.html

In the input field for Google Script API-KEY paste the one from your Apps Script. If you didn’t copy the key in the previous step you can retrieve if by going into the editor, in the deploy menu you need to click on manage deployments and you’ll find it under deployment ID:

Change the languages you want to use lower on the page, feel free to use Google Translate to find out what is what:

On the bottom of the page you will find the URL that you can copy and paste in your web browser, Google Chrome might be the only supported browser at the time of writting.

Step 3: Setting up OBS

Now comes the less fun part. Since the web page needs to listen to your voice you will have to run the page in your own Google Chrome instance, I’m unsure if it works on other browser since I wasn’t able to make the web app perform every single time.

To set it up all you need is a window capture and some filters. If the content of the web browser doesn’t appear you might need to disable hardware acceleration.

For the filters I usually just crop the top and a bit of the bottom, then I apply a chroma key filter to remove the screen background:

Congratulations, you are know streaming while subtitling at the same time. Subs are the way to go and this is what it looks like:

Troubleshooting

Refreshing the tab might help making the web app work, but if your speech isn’t appearing on screen you should instead try closing and reopening your browser.

I kept the tab loaded before closing Google Chrome and when I opened it again it was working.

Once again this isn’t flawless and some words might appear wrong or be heard wrong, these are the limits of speech recognition. Unless we slap some machine learning over your accent.

It might also strain your performances and require relaunching Google Chrome once in a while.

Credits

This is basically a translation of a Japanese page that was shared with me: http://www.sayonari.com/trans_asr/index_asr.html

This is a very useful tool for hearing impaired viewers and to enable people to appreciate better a stream in another language.

No ShadowPlay overlay in games, no recording after install a Stream Deck

I’ve recently purchased a Stream Deck MK2 by Elgato (Corsair) after playing around with the mobile app for a while and planning out some profiles for stuff like video editing and streaming.

It’s honestly a nice piece of equipment but I’ve had it for less than 24 hours and I’ve already found some problems.

Symptoms

After running the Stream Deck software to configure the keys and browse the plugins that are available I noticed that my ShadowPlay overlay isn’t showing in the critically acclaimed Final Fantasy XIV, which is unusual.

I closed the game, relaunched it, even rebooted and nothing. Time to try another game like Monster Hunter World, same. I confirmed that the main menu would show up but I had no overlay showing the replay buffer running.

Weirder was when I attempted to record it would ask me if I wanted to enable desktop recording. That’s when I started thinking that some software was grabbing ShadowPlay and keeping it to itself without ever releasing it.

I was looking for the icons on the bottom right

How to blacklist apps from ShadowPlay

The only way to fix this is to find a way to forbid ShadowPlay from hooking into it and of course Nvidia doesn’t give us tools to deal with that.
But on the bright side we have third party tools and I used the NVIDIA Profile Inspector, download a release here.

Download it, run it and the in the box on top search for Discord:

We will now add the StreamDeck.exe utility to that list by clicking on the add application to current profile button, browse to your Stream Deck installation folder and add StreamDeck.exe to it.

You might need to relaunch the Stream Deck utility, relaunch ShadowPlay through GeForce Experience or even reboot.
After that the utility will no longer trigger the overlay notification you get when you run a game and you should be able to record gameplay without enabling desktop recording.

Closing notes

I’ll make a proper post about how I use it at a later date (maybe) but for now I’m pretty much pleased with how easy it is to configure and I have started experimenting with some plugins such as Discord (mute/deafen toggle), iCUE profile changer (for my Corsair iCUE H150i RGB PRO XT) and a plugin to show CPU and GPU temps with HWiNFO.

I’ll get started with streaming a bit more often I guess and will improve my general workflow and battlestation setup.

Discord animated voice PNGs

Update 2023/05/03

Use Reactive.Fugi.Tech instead, it’s easier. You can setup your profile pictures and share a link to be integrated into OBS. It just works.

Original post

When building your streaming overlay you might want to add the other users that are in your current vocal chat but you want to customize a bit the way it’s displayed.

Discord doesn’t offer any of those options natively but with OBS Studio it’s possible to use some tricks.

CSS & web knowledge required to understand how to use CSS and how to link images.

Setting up the widget

Nothing really hard here, got to the Stream Kit page for Discord in the overlay section.

Setting up the server and the voice channel to be used will alter the URL so make sure you are using the right channel, but it’s possible to use a personal and private channel to use for PNG VTubing.

In OBS within your scene you need to create a browser source and use the provided link as such (no preview until it’s saved):

This is the basic setup. Next we will need a way to get the user ID on Discord.

Setting up Discord

To be able to get the user IDs we need to enable the developer options within Discord. Go to your settings within Discord and in the advanced tab you’ll find the developer toggle:

Getting the user’s ID is as simple as right clicking a name in the chat and clicking on the Copy ID button:

Customizing the widget

Since the widget is a web page within a web view in OBS Studio it’s easy to customize through CSS. Here’s the code to copied & pasted into the custom CSS text area in the browser source:

/*
To be used with the Voice Widget from the Discord Stream Kit
https://streamkit.discord.com/overlay

Do not hotlink images, please rehost them to avoid stealing
bandwidth and keep control over your images, Imgur is a fine
option for this.

Credits:
- Generator by kukushie: https://www.reddit.com/r/VirtualYoutubers/comments/k4q8jw/css_generator_for_discord_reactionary_images_that/
- Edited & improved by SenpaiSilver: https://twitter.com/SenpaiSilver

Please keep the credit chain when making & publishing your changes.
*/

@keyframes speak-now {
    0%  { bottom:0px; }
    15% { bottom:15px; }
    30% { bottom:0px; }
}

body {
    background-color: rgba(0, 0, 0, 0);
    margin: 0px auto;
    overflow: hidden;
}

/* Aligning everything on the same line */
.voice-state {
    display: inline-block;
}

/* Images must be square, change height for it to be scaled
back to 128px wide, or else deal with bad alignments */
.avatar {
    height: 128px !important;
    width: auto !important;
    border-radius: 0% !important;
    filter: brightness(50%);
}

.speaking {
    border-color: rgba(0,0,0,0) !important;
    position: relative;
    animation-name: speak-now;
    animation-duration: 1s;
    animation-fill-mode: forwards;
    filter: brightness(100%);
}

/* Hiding names because the discord parameter on the streamkit
doesn't seem to be taken into account correctly */
.name { display: none; }

/* Default avatar */
.avatar {
    content: url("https://link-to-image.png");
}

/* Users go here: */

.avatar[data-reactid*="new"] {
    content: url("https://link-to-image.png");
}
.speaking[data-reactid*="new"] {
    content: url("https://link-to-image.png");
}

The result is an overlay, where the images change went talking in some way:

  • Brightness is increased;
  • The image is bumped 15 pixels higher;
  • The image changes depending if an image is set for talking only.

Explaining some parts of the code further

It’s important to understand some parts of the properly before running this code, even though it’s just CSS.

First of all you cannot trust users, I recommend using a default image for users that are not part of the CSS to avoid displaying potentially unwanted profile pictures:

/* Default avatar */
.avatar {
    content:url("https://link-to-image.png");
}

This code will replace the img tag’s content with the provided image for everyone that connects to the voice channel. After that it will be possible to set below the specific users with their IDs:

.avatar[data-reactid*="user discord id"] {
    content:url("https://link-to-image.png");
}
.speaking[data-reactid*="user discord id"] {
    content:url("https://link-to-image.png");
}

When we override .avatar we are already setting the default image for the user, by specifying that the attribute data-reactid contains a certain string we can refine our selector and make it target a specific user ID (since they are unique).

In this case the same applies when .speaking is added to the user .avatar.

If you wish to retain round avatar you will need to tweak the border-radius within the first definition of .avatar.

Possible improvements

Since we are dealing with images, animated GIFs are an option and could be used to display an animation with transparency.

If the GIF format doesn’t provide enough colors then it’s possible to fallback to something like the animated WebP or APNG format.

Credits, warranties & notes

This code is based on a generator found on reddit, I’ve changed it to make it work better and fit my own settings. If you modify the code please keep the credit list and add yourself to it.

The code is provided as is and might break one day if the Stream Kit is updated.

This code can be used for son PNG VTubing too.