Using enhancr: Upscaling
Upon opening the upscaling tab, you will notice that it bears a resemblance to the other tabs, with a significant amount of overlapping content. This is because it is assumed that you have not yet read the other pages. The upscaling tab is located between the interpolation and restoration tabs.
To upscale a video in enhancr, you have the option to drag and drop a file from your file explorer onto the GUI, or click on the designated area next to the text. This will trigger a prompt from your operating system to select a video. Simply navigate to the desired location and open the file:
After selecting a video, enhancr will display a preview thumbnail along with some information about the file directly below the preview. This allows you to confirm that the correct video has been chosen before proceeding.
The output location is where the processed video will be saved, though it may not be immediately visible while the video is being processed due to enhancr's caching feature. When you click on the area next to the text, your operating system will prompt you to select a save location and name for the output file.
This line is used to edit the parameters for encoding the video. If you are not familiar with encoding, we recommend using the presets provided in the codecs box to find a suitable option for your needs.
For those who are comfortable with editing the encoding parameters, it is worth noting that they follow the standard FFmpeg syntax. However, it is important to remember that audio is simply copied or "muxed" from the input video, so audio-specific parameters may not be necessary or applicable.
This dropdown menu allows to select which container you would like your output video to use. Default should be .mkv as it supports most codecs, however if you need to use another one then feel free to change it.
A video container, also known as a wrapper or file format, is a type of file that contains both audio and video data, as well as metadata such as subtitles and other information. The video container acts as a "wrapper" around the video and audio content, similar to how a container would hold and protect items being transported.
Just as there are different types of containers for transporting different types of items (e.g. a cardboard box for fragile items, a suitcase for clothing), there are also different types of video containers for storing and transporting different types of video and audio content. Some common examples of video containers include MP4, MOV, WEBM and MKV. Each container has its own set of features and limitations, and is often associated with specific types of video and audio codecs (compression and decompression algorithms).
In most cases, the MKV container will suffice, as it supports a wide range of codecs and is unlikely to cause errors when it comes to outputs. However, if you need to share a video file online, such as by embedding it in a Discord message, you may need to use a container like MP4 or WEBM. Be sure to use codecs that are compatible with these containers and the platform on which you will be hosting the video.
This is where enhancr really shines, offering a range of engines for you to choose from, including Real-ESRGAN and waifu2x. You may notice that each engine has different labels, such as NCNN and TensorRT.
In short, NCNN is compatible with all graphics cards, while TensorRT is only compatible with Nvidia cards. However, TensorRT has the advantage of allowing you to generaate an engine file for your specific graphics card, which significantly speeds up AI processes. However, it does require some initial training time to generate an engine file. It's also worth noting that certain engines using TensorRT may require you to train separate engine files for specific resolutions, as they do not support dynamic shapes. While this process is only required once for each resolution, it is worth considering when deciding which engine to use.
This dropdown menu allows you to select the scaling factor for your video. For instance, if you select 2x and your input video has dimensions of 960x540, the output video will be 1920x1080.
In addition to a few additional settings that can be accessed from the settings page, you may add a video to the queue by clicking on the designated button. If you wish to add multiple videos to the queue, simply repeat the same steps for each video. Once you are satisfied with the contents of your queue, click the "Enhance video(s)" button to initiate processing.