Convert your video to a file format that Instagram will accept. Instagram makes it easy to upload videos filmed on your phone, but if you have a video filmed with another camera, the format might not be one that Instagram allows on its platform. Use this free file converter to switch your video's format to an Instagram-friendly extension. Link or upload your file on this page, set the optional presets for size, start and end times, and audio or no audio, and hit Start to convert video for Instagram. The converter will do the rest. Once you have the file in its new format, follow Instagram's instructions for uploading it to your account there.