When preparing to upload a video to Vidyard, there isn't necessarily a "best format" to deliver your video in. Each file type comes with its own pros and cons when it comes to how you encode your video. Vidyard's encoder is incredibly robust and encodes a large number of different video file formats. That said, there are a few things to consider when uploading a video to Vidyard.
Naturally, the higher quality the file, the larger the file size will be. Ideally, this should not be a limiting factor when you are encoding your source. A higher bitrate video file will always look better than a lower bitrate file at the expense of having a larger file size. If possible, it's better not to limit your bitrate only for the sake of reducing the file size. If you can afford the bandwidth to upload a large file, set your bitrate to be as high as possible. That said, a 5GB file will take a lot longer to upload and subsequently encode than a 500MB file, so use your best judgement.
The best way to preserve the quality of your videos is to upload a source file that has the same or higher resolution than what you think you'll need. Most video editing software packages have encoding pre-sets that you can use to output large HD videos, or smaller videos intended for mobile devices. These pre-sets generally work well with Vidyard and can be used safely.
If possible, it is recommended that you upload video files in H.264 format to ensure minimal disruption during the encoding process. Vidyard encodes videos to be H.264 mp4 files, so it's not a bad idea to upload your videos in this format. To ensure that the format you are uploading is supported by Vidyard, take a look at our list of supported video formats.
If possible, it is recommended that you encode your video to a constant frame rate before uploading to Vidyard. Videos with variable frame rates often run into playback issues. It's also a good idea to apply a deinterlace filter if your file has been interlaced.