After uploading videos to Cloudinary, they can be transformed in many ways.
The syntax for transforming and delivering videos is generally the same as that for images, and you can apply the majority of available image transformations to video as well. For example, you can resize, crop, rotate, set video quality and format or use auto quality and/or auto_format, add text or image overlays to your videos, and more.
There are also a number of special options you can use for transforming and delivering video content. For example, you can adjust their size, shape, speed, duration, quality, and appearance. There are also some features that are specific to audio.
This section introduces you to the basics of PHP video streaming and transformation. For complete details on all video transformation functionality, see Video transformations and the Transformation URL API Reference.
In addition to transformation features that are equally relevant for images and video, such as resizing, cropping, rotating, adding text or image overlays, and setting video quality or format, there are a variety of special transformations you can use for video. For example, you can:
- Transcode videos from one format to another
- Apply video effects such as fade-in/out, accelerating or decelerating, adjusting volume, playing in reverse
- Play video-in-video, trim videos, or concatenate multiple videos
- Set video and audio quality options such as bitrate, video codec, audio sampling frequency, or audio codec
- Adjust the visual tone of your video with 3D LUTs
- Generate thumbnails or animated images from video
- Deliver your video using adaptive bitrate streaming in HLS or MPEG-DASH
You can optionally specify all of the above transformations within a
VideoTag method, which automatically generates an HTML5 video tag including the transformation URL sources for the main formats supported by web browsers, as well as a poster thumbnail image. This enables the browser to automatically select and play the video format it supports. The video files are created dynamically when first accessed by your users.
For details, see the video tag documentation.
This section provides examples of using PHP to apply some of the video transformation features mentioned in the previous section.
The following example resizes the
dog video to 40% of it's original size and rotates it by 20 degrees. It also adds a semi-transparent cloudinary logo in the bottom right corner, using a southeast gravity with adjusted x and y coordinates to reach the corner of the rotated video.
(new VideoTag('dog.mp4')) ->rotate(Rotate::byAngle(20)) ->resize(Resize::scale()->width(0.4)) ->overlay( Overlay::source(Source::image('cloudinary_icon_white') ->transformation((new ImageTransformation()) ->resize(Resize::scale()->width(60)) ->adjust(Adjust::opacity(50)))) ->position((new Position()) ->gravity(Gravity::compass(Compass::southEast())) ->offsetX(60)->offsetY(15) ));
The following example adjusts the brightness of a skiing video, and sets its radius to max in order to give a telescope-like effect. It then appends a copy of the video in reverse, and then plays it forwards again in slow motion.
(new VideoTag('ski_jump.mp4')) ->videoEdit( VideoEdit::concatenate(Concatenate::videoSource('ski_jump') ->transformation((new VideoTransformation()) ->effect(Effect::reverse())))) ->videoEdit( VideoEdit::concatenate(Concatenate::videoSource('ski_jump') ->transformation((new VideoTransformation()) ->effect(Effect::accelerate()->rate(-50))))) ->roundCorners(RoundCorners::max()) ->adjust(Adjust::brightness()->level(10));
The following example generates a
<video> tag for a video that will loop continuously in an HTML5 video player with default controls. When the video loads a default poster is displayed based on the middle frame of the video. The tag automatically includes the source URLs for all supported formats, with the requested transformations: use the first 10 seconds of the original video, pad to 480x360, and generate at 70 quality to control file size.
(new VideoTag('dog')) ->resize(Resize::pad(480, 360)) ->videoEdit(VideoEdit::trim()->duration(10)) ->quality(70) ->fallback('Your browser does not support HTML5 video tags.') ->setAttributes(['controls', 'loop']);
The above code results in the following HTML:
<video controls loop poster="https://res.cloudinary.com/demo/video/upload/c_pad,h_360,w_480/du_10/q_70/dog.jpg"> Your browser does not support HTML5 video tags. <source src="https://res.cloudinary.com/demo/video/upload/c_pad,h_360,w_480/du_10/q_70/vc_h265/dog.mp4" type="video/mp4; codecs=hev1"> <source src="https://res.cloudinary.com/demo/video/upload/c_pad,h_360,w_480/du_10/q_70/vc_vp9/dog.webm" type="video/webm; codecs=vp9"> <source src="https://res.cloudinary.com/demo/video/upload/c_pad,h_360,w_480/du_10/q_70/vc_auto/dog.mp4" type="video/mp4"> <source src="https://res.cloudinary.com/demo/video/upload/c_pad,h_360,w_480/du_10/q_70/vc_auto/dog.webm" type="video/webm"> </video>
- Get an overview of the PHP SDK, and the various configuration options.
- Learn more about uploading images and videos using the PHP SDK.
- See examples of powerful image transformations using PHP code
and see our image transformations and video transformation docs.
- Check out Cloudinary's asset administration capabilities, for example, renaming and deleting assets, adding tags and metadata to assets, and searching for assets.
- See the PHP SDK Migration guide for more information on migrating to version 2 of the PHP SDK.