Invert the colors of a Video File Online

Why invert the colors of a video file?

Inverting the colors of a video file transforms the visual data into its negative image, flipping brightness values and swapping hues for their chromatic complements—such as turning white to black and blue to orange. While often used as a creative tool to evoke a surreal, psychological, or otherworldly atmosphere in film and music videos, you should also consider this technique for its practical accessibility benefits. Inverting colors can significantly reduce eye strain in low-light environments by eliminating harsh white backgrounds (simulating a "dark mode") and can assist viewers with specific visual impairments, such as photophobia or cataracts, by creating a high-contrast viewing experience that makes details easier to distinguish. 

Example of the invert colors filter on sintel.

Image from sintel video file after applying the invert video filter

 

Image from sintel video file before applying the invert video filter

How can i invert the colors of a video file? 

You can invert a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

In this example i used the video converter at https://webmconverter.app/mkv-to-webm once you have selected your video file the video information will be displayed.

 

If the video file was correctly detected then you should scroll down to the organized video filters section below and select the "negate - Invert the colors" filter press add and enable it, then the configuration of the video filter will be shown. 

 

 

 

There are no configuration setting for the negate filter only enable and disable.

 

 

Video Conversion

Once you are happy with your settings scroll down to the convert button and click it, to start the conversion process.

 

when the progress bar reaches 100% a download button will appear so that you can download the output to your storage device.

 

In this example i used the video converter at https://webmconverter.app/mkv-to-webm and sintel video file from the Blender foundation.

 

 

Sharpen a Video File Online

Why sharpen a video file online?

Sharpening a video file is a subtle yet transformative post-production technique that enhances the perceived resolution of your footage by increasing the contrast along the edges of objects and textures. You should apply this adjustment to counteract the inherent softness often introduced by digital camera sensors, lens limitations, or aggressive file compression, effectively restoring clarity and "pop" to a muddy image. By carefully refining these fine details, you not only salvage visuals that might otherwise feel slightly out of focus but also create a more professional, high-definition aesthetic that helps guide the viewer’s eye to the most important elements of the frame. 

 

video stream after the sharpener video filter was applied

 

video stream before the sharpener video filter was applied

How can a sharpen a video file online? 

You can sharpen a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

 

In this example i used the video converter at https://webmconverter.app/mp4-to-webm once you have selected your video file the video information will be displayed.

In this example i chose a low resolution video file to try an demonstrate the effect of the cas - Contrast Adaptive Sharpener video filter. 

If the video file was correctly detected then you should scroll down to the organized video filters section below and select the "cas - Contrast Adaptive Sharpener" filter press add and enable it, then the configuration of the video filter will be shown. 

 

 

 

These are the settings i used to create the effect of the example shown above, but every circumstance will be different.  

 

 

Now you need to figure out what the strength setting should be, i chose 0.92 but every instance will be different it's best to truncate your video file first to a few seconds and do a trial and error to figure out the best setting.

Video Conversion

Once you are happy with your settings scroll down to the convert button and click it, to start the conversion process.

 

when the progress bar reaches 100% a download button will appear so that you can download the output to your storage device.

 

 

In this example i used the video converter at https://webmconverter.app/mp4-to-webm and sintel trailer video file of low resolution from the Blender foundation.

 

Color Hold a Video File Online

Why color hold a video file online?

The Color Hold filter (often referred to as Selective Color or Color Pass) is a striking post-production effect that desaturates the majority of a scene into black-and-white while keeping a specific hue vibrant and untouched. You should use this tool when you want to force the viewer's perspective, isolating a key narrative element—like a red umbrella in a grey storm or a yellow taxi on a dark street—to ensure it cannot be ignored. By eliminating the distraction of surrounding colors, you not only create a sophisticated, high-contrast aesthetic but also attach intense symbolic importance to the subject, instantly guiding the audience’s focus to exactly where the emotional or narrative weight of the story lies.

Example of the color hold effect on sintel.

This is a screen shot of the video stream after the filter was applied.

This is a screen shot of the video stream before the filter was applied.

 

How can i color hold a video file?

You can color hold a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

 

In this example i used the video converter at https://webmconverter.app/mkv-to-webm once you have selected your video file the video information will be displayed.

 

If the video file was correctly detected then you should scroll down to the organized video filters section below and select the "colorhold - Remove all colors except for one" filter press add and enable it, then the configuration of the video filter will be shown. 

 

These are the settings i used to create the effect of the example shown above, but every circumstance will be different.  

 

 

 

I used a screenshot of the video stream which can be extracted using a video player or at https://webmconverter.app/screenshot-extractor if the format is supported. Then i took a sample of my desired color using the eye dropper tool from The Gimp.

 

You need to the the Hexadecimal representation of the color for the color hold filter, in this case it was #EAB088. Which was selected from the characters face.

 

Once you are happy with the color selection you need to figure out what the Similarity setting should be, i chose 0.22 but every instance will be different it's best to truncate your video file first to a few seconds and do a trial and error to figure out the best setting.

If you would like to generate the image from the example above enter the truncation values From:   00:03:24 and To: 00:03:24 which will get two seconds of video. The sintel video file can be found all over the internet.

 

Video Conversion

Once you are happy with your settings scroll down to the convert button and click it, to start the conversion process.

 

 

when the progress bar reaches 100% a download button will appear so that you can download the output to your storage device.

 

 

In this example i used the video converter at https://webmconverter.app/mkv-to-webm and sintel video file from the Blender foundation.
 

 

 

Edge Detect a Video File Online

Why Edge Detect a Video File?

The Edge Detect video filter acts as a digital stylization tool that transforms standard footage into an architectural abstraction by isolating and emphasizing the boundaries where sharp changes in brightness or contrast occur. By stripping away color, shading, and texture, it reduces a scene to its skeletal geometry, typically rendering the results as glowing, neon-like contours against a stark black background. This effect is frequently used to simulate robotic vision systems, evoke a retro-futuristic "wireframe" aesthetic, or create a surreal, pencil-sketch quality that focuses the viewer's attention purely on movement and shape rather than realistic detail.

The Source Video File before Edge Detect Filter 

 This is the source video file before the the edge detect filter was applied.

How can i Edge Detect a Video File?

You can edge detect a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

 

This should open the file selection dialog and limit your visible files to your selected format. In this example i selected the mp4 format as my source video file, but many other formats are also supported.

Input video information

Once the video file has been selected from your storage device, it's may take a few seconds for the video file to be inspected by the video processor. Once the file has been inspected you will be able to see some information about the video file. If the video file was correctly probed.

In this example we will be using a mp4 file named shot_0001(10).mp4 which was generated using amazon luma A.I.
 

Where is this Edge Detect Video Filter?

You can find the edge detect video filter  on a video converters page. Scroll down to the organized video filters section and select the "edgedetect - Detect and draw edges" filter.

Once you have found this option on the organized video filters drop down selection, click add and you will see the following options.

 

The output video files below used the following low and high settings using the edge detect filter

Video Conversion

Once you are happy with your settings scroll down to the convert button and click it, to start the conversion process.

when the progress bar reaches 100% a download button will appear so that you can download the output to your storage device.

In this example i used the video converter at https://webmconverter.app/mp4-to-webm and a sample file from Amazon A.I. luma

Example Outputs

Mode - Wires Edge Detect 

 Mode - Colormix Edge Detect

The canny setting is like the wires but green, so i didn't bother adding the to the example outputs.

 

 

Pixelate a Video File Online

Why Pixelate a Video File?

Pixelating an entire video file is most often a deliberate stylistic choice intended to evoke a retro, low-fidelity aesthetic reminiscent of early 8-bit gaming, data-moshing, or "glitch art" culture, effectively transforming standard footage into abstract digital impressionism. Beyond this artistic application, applying a global pixelation filter serves as a comprehensive privacy measure or censorship tool; it allows the viewer to perceive the general motion, pacing, and audio context of a scene while completely scrubbing all identifiable details—such as faces, license plates, or sensitive locations—ensuring total anonymity or masking graphic content that is unsuitable for clear viewing.

How can i Pixelate a Video File?

You can pixelate a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

This should open the file selection dialog and limit your visible files to your selected format. In this example i selected the mkv format as my source video file, but many other formats are also supported.

Input video information

Once the video file has been selected from your storage device, it's may take a few seconds for the video file to be inspected by the video processor. Once the file has been inspected you will be able to see some information about the video file. If the video file was correctly probed.

In this example we will be using a mkv file named sintel a free video file for proposes such as this.

Where is this Pixelate Video Filter?

You can find the pixelate video filter  on a video converters page. Scroll down to the organized video filters section and select the "pixelate - Pixelate" filter.

Once you have found this option on the organized video filters drop down selection, click add and you will see the following options.

Typically you would want pixels at the same aspect ratio of the video file, you can do this by entering the correct width and height values from the source input file. As shown in the video information table above. But there maybe some situation where this may not be relevant. By changing these values you can get different effect, it's up to you to experiment.

The scale setting on this form will change the actual relative size of the pixelation, typically you would want this to be on the higher size as the effect is far more noticeable.  

Video Conversion

Once you are happy with your settings scroll down to the convert button and click it, to start the conversion process.

when the progress bar reaches 100% a download button will appear so that you can download the output to your storage device.

This example was created using https://webmconverter.app/mkv-to-webm video converter using the sintel movie from the blender foundation.

 

 

Deinterlacing a Video File Online.

Why Deinterlace a video file?

Deinterlacing is the digital process of converting interlaced video—which displays images by rapidly alternating between sets of odd and even horizontal lines (fields)—into a progressive format, where each frame is rendered as a single, complete picture.

You would primarily wish to do this because almost all modern screens (computer monitors, smartphones, and flat-panel TVs) display video progressively. If you watch older interlaced footage (such as broadcast TV recordings, VHS, or DVD rips) on these modern devices without deinterlacing, you will encounter distracting visual glitches known as "combing artifacts." These appear as jagged, horizontal lines sticking out of moving objects, making the video look blurry or glitchy. Deinterlacing smooths out these edges, restoring visual clarity and ensuring the video plays correctly on YouTube, media players, and editing software.

How can i deinterlace a video file?

You can delinterlace a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

This should open the file selection dialog and limit your visible files to your selected format. In this example i selected the vob format as my source video file, but many other formats are also supported.

Input video information

Once the video file has been selected from your storage device, it's may take a few seconds for the video file to be inspected by the video processor. Once the file has been inspected you will be able to see some information about the video file. If the video file was correctly probed.

 

In this example we will be using a vob file as most of the time when deinterlacing it will be from a source like a dvd.

Bob Weaver Deinterlacing Filter

The Bob Weaver Deinterlacing Filter (commonly abbreviated as bwdif) is a high-quality, motion-adaptive algorithm used to convert interlaced video into progressive scanning. Its whimsical name is almost certainly a pun on the two most fundamental deinterlacing techniques: "Bob" (which doubles lines to smooth motion but loses resolution) and "Weave" (which stitches fields together to preserve resolution but creates jagged artifacts in motion)—effectively implying it "bobs and weaves" to get the best of both worlds. Technically, it is an evolution of the popular yadif (Yet Another DeInterlacing Filter) algorithm, enhanced with methods from w3fdif and cubic interpolation to produce smoother edges and fewer artifacts. It is widely regarded as one of the best general-purpose deinterlacers available because it intelligently processes static areas of the image differently from moving ones, preserving maximum detail without requiring the intense computational power of neural network-based methods.

How can i use the Bob Weaver Deinterlacing Filter?

You can apply the Bob Weaver Deinterlacing filter by scrolling down to the Organized Video Filters on the page and selecting the "bwdif - Bob Weaver Deinterlacing" option and clicking add.

 

Once you click add a organized video filter will be added to the project. Typically the default values here should be correct for most users. If using the send_field option you should double the frame rate of the video.

Video Conversion

Once you are happy with the settings you should scroll down to the convert button and click it to start the conversion process.

 

When you click the convert button a progress bar will appear if all the setting are correct and the input video file is not corrupt. 

When the progress bar reaches 100% a download bar will be shown and the page will be unlocked once downloaded.

This example used a decrypted dvd video file from my storage device and used the video converter located at https://webmconverter.app/vob-to-webm

 

Change the Frame Rate of a Video File Online.

Why change the frame rate of a video file? 

Changing the frame rate of a video file involves altering the frequency at which consecutive images appear on screen, measured in frames per second (FPS). You typically change the frame rate to achieve a specific creative aesthetic or technical compatibility. For example, filmmakers often convert footage to 24 FPS to achieve a traditional "cinematic" motion blur, whereas gamers or sports broadcasters prefer 60 FPS or higher for crisp, hyper-realistic fluidity. A common creative reason is to create slow motion; by recording at a high frame rate (e.g., 120 FPS) and "conforming" it to play back at a standard speed (e.g., 30 FPS), you stretch the action without losing visual quality. On the technical side, you may need to adjust frame rates to match regional broadcast standards (like NTSC vs. PAL) or to reduce the file size for streaming by removing unnecessary frames from static footage.

 How can i change the frame rate of a video file.

You can change the frame rate of a video file using your web browser at http://webmconverter.app you just simply need to select your video file from the interface using the select button on the correct video conversion page.

 

This should open the file selection dialog and limit your visible files to your selected format. In this example i selected the gif format as my source video file, but many other format are also supported.

Input video information

Once the video file has been selected from your storage device, it's may take a few seconds for the video file to be inspected by the video processor. Once the file has been inspected you will be able to see some information about the video file. If the video file was correctly probed.

 In this example we will be using a gif file.

Video Frame Rate Adjustments. 

Scroll to the following form switch Framerate and select it. 

 

Once the form field has been selected, you should see a number form field which will allow for direct input of your new desired framerate. 

You can enter the values from between 1 to 60 in this form field which is the frames per second. Typically you would need to use this form field to lower the frame rate, but there are some circumstances where this can be used to increase the frame rate. Such as using video filters like motion blur or deinterlacing.

Video Conversion

Once you are happy with your chosen video frame rate you should scroll down to the convert button, which will have different text based on your chosen source video file format.

Once the progress bar reaches 100%, you will be able to download the converted video clip to your storage device.

 

This demonstration article was created from gif animation found online on the video converter page http://webmconverter.app/gif-to-webm