There is often a lot of confusion from people using MP4Box to create MP4 files or DASH content with a specific aspect ratio. This confusion often comes from badly-chosen acronyms in the MP4/DASH standards. In this post, we clarify what MP4Box uses and does. Continue reading Aspect Ratios
Dear adaptive streaming followers,
Many of you reported issues when packaging your encoded content to respectively HLS or MPEG-DASH using GPAC (resp. the MP42TS and MP4Box tools). Most of the time, this is due to misalignment of key-frames across the different encoded qualities. In this article, we are going to show how to check key-frame alignment.
Continue reading Check key-frame alignment with MP4Box
We’ve recently improved the language tagging in GPAC, and in particular in MP4Box and in MP4Client. This posts gives details about how to use these new features. Continue reading Improved language tagging in GPAC
The 105th MPEG meeting was held in Vienna, Austria. The GPAC team presented many contributions (see below) to the Systems group related to the ISO Base Media File Format, the MPEG-2 Transport Stream or the MPEG-DASH standards. The contributions were largely well received. This post gives some details. Continue reading GPAC’s contributions to MPEG 105th meeting
Dear GPAC users,
We’ve just released a new application which might be of interest to some (hopefully many) of you. It’s called DashCast. It’s an application which allows you to:
- transcode a live/non-live stream in multiple qualities (eg. bitrate and resolution).
- segment a continuous stream in small chunks and packetize them for delivery via Dynamic Adaptive Streaming over HTTP (DASH) standard.
For more information, check out the dedicated page.