WebP Encoding

This wiki/Encoding has two encoders:

• a Cython based encoder using the ​Advanced Encoding API (only available in version 0.13 onwards) which is faster
• a python-webm fallback

Be aware that although webp offers efficient compression, it can be quite slow at times, especially in "lossless" mode.

Updated python-webm

We carry a modified version of python-webm, with the following changes:

• ​support for lossless modes
• memory leak fixed
• removed buggy code in YUV to RGB conversion files - which we don't need since we have our own colourspace conversion modules.

You can find source snapshots here: ​http://xpra.org/src/

Links and Tickets

• ​WebP upstream: A new image format for the Web
• ​python-webm upstream
• #491: webp is leaking memory (same bug in Python Pillow: ​Pillow issue 586)
• 419#comment:4: better/faster lossless encoding selection: webp lossless can be extremely slow!