The GPAC team at Telecom ParisTech has two new open positions:
- C/C++ multimedia developper, job description available here
- Web multimedia developper, job description available here
We also have an open PhD position on peer-to-peer streaming in web browsers, description available here.
If you would like to join us in our offices in Paris and participate in our open-source and R&D activities, don’t hesitate to contact us!
We have introduced support for 10 bit HEVC profile last week in GPAC, using the great openHEVC decoder. Doing so, we also introduced support for 10 bit display. The support requires a graphics card capable of driving a 10 bit display; this support is usually enabled via the control application of your GPU. Do not worry, 10-bit video will still show in 8 bit if your graphics card doesn’t handle 10 bit output !
The setup currently requires manual configuration of the player. Edit the GPAC configuration file and set the following keys:
[Compositor] OpenGLMode=always [Video] GLNbBitsPerComponent=10 [Systems] Output8bit=no
You can also enable it from the command line:
MP4Client -opt Compositor:OpenGLMode=always -opt Video:GLNbBitsPerComponent=10 -opt Systems:Output8bit=no
This has only been successfully tested on windows, using the “DirectX Video Output” module of GPAC. It has been tested on a ATI FirePro W5000 GPU but should work the same on other ATI models or NVidia ones.
Support for 10 bit is also enabled on X11 (same config) but doesn’t seem to work with the FirePro W5000.
We welcome any feedback you may give on the compatibility of GPAC’s 10bit support on any GPUs !
As part of the 4Ever project, GPAC is currently on-air at Roland Garros, the French Tennis Open, for a world premiere live broadcast of 720p50 HEVC over DVB-T2 (broadcasted in Rennes through ImaginLab), IPTV and MPEG-DASH ! If you’re in town and want to check it out, drop us a line or stop at the RGLab booth !
Release 0.5.0 of GPAC is finally out, with many new features and bug fixes, including:
– MPEG-DASH and HLS support (players and MP4Box)
– MPEG-U Widgets and UPnP support in the player
– Stereo and multiview display support
– Better AVC and SVC support including OpenSVC decoder integration
– More live tools: RTP, MPEG-TS, T-DMB support, scene encoders (BIFS and RME/DIMS)
– iOS and Android support
– and many other good things
Find out more at https://gpac.wp.imt.fr/downloads/
Enjoy and spread the news!
We have a few R&D positions opening this spring (home networking, hybrid broadcast/brodband delivery, next-generation TV services…), so feel free to contact us if you are interested (M.Sc. or equivalent, PhD candidates welcome).
NOTE: This post is not the most up-to-date documentation of DASH support in GPAC. For the latest information on DASH, check out these pages:
We have been updating the support for DASH Streaming (ISO/IEC 23009-1) in GPAC as of revision 3849. The update covers both content generation tools and player, and both DASH and HLS support.