Remove station logo from video using FFmpeg

FFmpeg delivers a lot of video filters including a filter called “delogo”. This one can be used to remove a station logo from a video. How it works First we need to define a square that contains the logo. Then the filter uses surrounding pixels outside of...

ran.de Livestream API

ran.de provides for some sport events a live stream in Germany. This article shows you the API behind it (tested only with the NFL streams). Since it is undocumented it can change anytime. What livestreams are planned? First we need to know, if a stream is currently...

NFL Public API

This article is a short summary about all public available and machine readable data of the NFL. Scores A good entry for this is the following URL: https://feeds.nfl.com/feeds-rs/scores.json The root node contains metadata about the current week. This information will...

gzip compression for HLS playlists

We have used in the last article the mediastreamvalidator from Apple to create a report of recommendations for our stream. Now we start fixing this by starting with the following message: The server MUST deliver playlists using gzip content-encoding All Variants...

HLS Stream validation

Apple provides a bunch of tools to create and (more important for me) to validate HLS streams. Media Stream Validator (mediastreamvalidator) simulates an HTTP Live Streaming session and verifies that the index file and media segments conform to the HTTP Live Streaming...