The reason is that the more I-frames you have, the larger the file is, and the goal of delivery codecs like H.264 or WMV is to compress the video as much as possible. Int er-frame codecs, alternatively, use very few I-frames. Every frame is encoded and decoded individually. Int ra-frame codecs use I-frames exclusively.
I-frames, also known as keyframes, contain all the information for a frame on each individual frame. Inter-frame codecs use three different types of video frames: I-frames, P-frames, and B-frames. To get a little technical, here’s how it works: Inter-frame codecs take advantage of redundant information on neighboring frames, and save space by storing the changes between frames. Inter-frame codecs, on the other hand, rely on information in preceding and occasionally upcoming frames. As the name suggests, you are basically encoding each separate frame as its own picture. Intra-frame codecs store all the video information for each frame on every individual frame. To handle these two scenarios, there are two distinct codec types: Intra-frame codecs (best for editing) and Inter-frame codecs (best for delivery). This can result in large, uncompressed files with lots of video data.Īlternatively, when delivering a digital video, you want your file to be compressed and as easy as possible for your video player to access, read and display. So, ideally, all the data or information for each frame should be easily accessible to the editing program. When editing digital video, non-linear editing programs work by accessing and changing the individual frames of that digital file. If you use a “delivery” format in an editing program (such as ScreenFlow), it can behave distinctly BADLY, causing all sorts of problems that, if you don’t know what’s going on, can appear to be caused by your editing program. In the world of digital video there are formats that are designed for editing, and then there are formats that are designed for delivery (or distribution). One of the first questions we ask (after “did you spill a cold beverage on your keyboard?”) is:ĭo you have imported video in your projects and if so what format/codecs are those imported videos? Editing formats vs. Rendezvous Videoconferencing feature allows users to bring in live video feeds from multiple sources, including remote locations.We occasionally get support calls from people that are experiencing strange lagging, stuttering, or freezing of ScreenFlow when they are trying to edit their projects.Encoding support for Nvidia NVENC and Intel Quick Sync Video.Adds a built-in streaming service access from Ustream.A direct integration with Limelight Networks, adds support for Flash streaming.Multiple Broadcast Support, when ready to go live, it provides direct integration with a number of streaming service providers.
Wirecast 10 supported video files windows#
Desktop Presenter - makes Macintosh or Windows Desktop available as a source.Can broadcast to multiple services at once.
Wirecast 10 supported video files software#
Wirecast is a software video switcher, controlling real-time switching between multiple live video cameras, while dynamically mixing in other source media, such as QuickTime movies, music, audio and slides to create professional broadcast productions for live or on-demand distribution on the web. It allows users to create live or on-demand broadcasts for the web.
Wirecast is a live video streaming production tool by Telestream.
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