Publitio’s video format converter

Video file formats

Publitio supports MP4, WebM and OGV video formats:

MP4 is one of the earliest video file formats introduced in 2001. It can store video files, audio files, text and images. MP4 provides high quality while maintaining small file sizes.

WebM is intended for use with HTML5. It requires minimal computer power to compress and unzip the files. The aim of this format is to enable online video streaming on any device such as, desktop, smartphones, tablets and smart TV.

OGV files are open source and are used for streaming high-quality videos on the internet. Though OGV files are used for streaming, they are higher in quality than WebM files which means it will take longer for them to be delivered to the user. OGV is recommended for streaming high quality videos or art.

Video quality

Video quality depends on many factors such as resolution, aspect ratio and frame rate as well as the details such as colors, shadows, lighting etc. Most of the time, higher resolution means higher video quality. Publitio allows you to create video transformations while retaining the quality of your video.

Convert your videos in a few steps

Before you start converting your videos via Publitio, have in mind that there are 2 different ways to do this. The first method is via Publitio dashboard. If you have uploaded your files to your account, you can head straight to the “Versions” page. Select the previously uploaded video from the dropping menu and click the New Version (+) button. The menu will pop-up and from there you will be able to select the features you wish to convert (output format, resolution, quality, trimming and watermark).

Another method of achieving this is through URL-based transformations. Publitio offers a URL-based form of API which enables all file transformations to be done through the browser, by simply changing parameters in the file URL. You can use it to transcode your files between formats, for resizing, cropping, watermarking, trimming and/or quality adjustment.

Convert video to mp3

Any video that you upload can be converted to mp3, wav and ogg audio formats. This can simply be done from the dashboard by setting the output format as well as via URL-based transformations. Video to audio transformations also support trimming for audio both from the menu and by changing the parameters in the file URL. You can also convert: audio to video, audio to image (waveform), image to video, image to audio, document to image etc.

Image upload, storage, manipulation and optimization

URL-based video transformations

To perform a URL-based video transformation, you simply need to adjust or include certain elements into the URL of your file. These are the following parameters you need to include in your file URL in order to change your video options:

  • w and h for resizing (width and height);
  • c is used for cropping in combination with width and height parameters;
  • wm for watermarking;
  • q for quality adjustment;
  • for trimming, use t (time) and so (start offset) / eo (end offset).

Here is an example of a file converted via URL-based transformation:,eo_2,h_480/tummy.mp4

Here, so_ indicates from which second of the original video the new one begin, eo_2 makes the video 2 seconds long and h_480 defines the resolution of the video (480p).

You can find more detailed info on how to execute URL-based transformation for video processing on Publitio documentation.

Image formatting

Supported formats

With Publitio you can easily transcode your files between formats. Supported extensions (output formats) are listed below:

  • For videos use mp4, webm and ogv format extensions. You can transcode videos to images via image formats listed below.
  • For images use jpg, jpeg, png, webp, gif, bmp, svg and ico format extensions. You can transcode images to mp4, webm and ogv video format extensions.
  • For audio use mp3, wav and ogg. You can transcode audio to image and create waveforms using image formats listed above. We also support audio to video transcoding via mp4, webm and ogv video format extensions.
  • For documents use pdf format. You can also transcode documents to image files via jpg, jpeg, png, webp, gif, bmp, svg and ico image format extensions.
Image manipulation

Resizing and cropping videos

Resizing and cropping are the most common use of video converters. Resizing a video means adjusting its resolution, while cropping adjusts the edges of a video. To resize a video within URL, you need to change its width and height by changing the right parameters (h and w). For cropping use c in combination with width and height parameters. Supported values are c_fit; c_fill and c_limit.

Fill will resize the video to exact given width and height while retaining the original aspect ratio.

Fit will resize the file so that it takes up as much space as possible within a bounding box defined by the given width and height parameters. Original aspect ratio is retained and all of the original file is visible.

Limit acts the same as Fit, but only if the original file is larger than the given limit (width and height), in which case the video is scaled down so that it takes up as much space as possible within a bounding box defined by the given width and height parameters.

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Image resizer

Aspect ratio

Video aspect ratio is the proportion of video width and video height. Video resolution and aspect ratio are in close relation to each other. Common aspect ratios are 1:1, 4:3, 3:2, 21:9, 9:16 and 16:9. The 16:9 is commonly used for video making and is usually capable of supporting the highest resolution for horizontal videos, while 9:16 is typically used for vertical videos.

Image Watermarking - Protect your intellectual property

Video hosting and storage

Publitio offers video content hosting and while providing the storage of your files it also allows you to work with them. It features automatic backup as well as unlimited URL-based file transformations for all types of user accounts. Whether you choose the Starter plan which is completely free or the most advanced Pro plan, you will be able to do file transformations as much as you want.

Responsive images for best mobile performance

Compress video files without losing quality

Video compression is a process of reducing the size of a video. Compression decreases and removes unwanted data and recodes the actual images of the video. Publitio video compression features compression levels from 1 (smallest file size possible) and 100 (highest video quality).

Note that some videos are too large in size to be uploaded or loaded quickly so you will need to compress them before you put them to use. Publitio offers the option to compress your video to a degree of your choice without losing quality.

Image optimization for websites


What is video conversion?

Video conversion is the process of converting a video into another format and changing its resolution, aspect ratio, codecs etc. Video conversion also compresses the size of a video so it can be easily uploaded, streamed, shared and/or played.

What are the main features of a video converter?

The main features of a video converter are:

  • Changing the output format (mp4, ogv, webm...)
  • Resizing, cropping and adjusting the quality of the video
  • Trimming and watermarking the video
  • Compressing the video’s size to enable uploading and sharing and speed up loading times

Can I convert a video to an audio file?

Yes. Publitio’s video converter supports video to audio conversion into mp3, wav and ogg audio formats. Other conversions include: audio to video, audio to image, video to image and many more and can be performed interchangeably.

Who should use Publitio’s video hosting solution?

Anyone in need of file hosting and storage. Starter plan is free and includes 10GB of storage and an unlimited number of file transformations on the fly. If you are not a user already, we recommend creating a Publitio account here. It is free and you can upgrade to another plan anytime you want!

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