Format Basics
A filename extension names a container more often than it names the compression inside. That distinction decides whether a job can be copied quickly or must be re-encoded. These guides inspect streams first and avoid promising lossless results from a lossy transcode.
Burned-In vs Soft Subtitles: Tracks and Sidecars
Burned-in subtitles are part of the video image; soft subtitles remain separately selectable when the playback system supports them.
Convert Video Without Quality Loss: What Is Possible
Video conversion avoids image-quality loss only when compatible compressed streams can be copied into a new container without re-encoding, a process…
Pixel Aspect Ratio vs Display Aspect Ratio Explained
Pixel aspect ratio describes the shape used to display one pixel; display aspect ratio describes the width-to-height shape of the whole picture.
Variable vs Constant Frame Rate: Which to Use
Constant frame rate (CFR) gives every frame the same display interval, while variable frame rate (VFR) allows intervals to change.