> compressed file format such as jpeg. I am trying hard to avoid the > rather expensive yuv->rgb conversions. Can anyone recommend a > compressed output file format (such as jpeg) that most browsers can > recognize & decode, and if it is possible to create it from a yuv420p > image (without the compressor converting to rgb first)? Thanks! jpeg works, you can feed libjpeg directly with yuv data. xawtv does this (see xawtv-3.69/libng/plugins/conv-mjpeg.c), libjpeg also comes with good documentation which describes how to do it. Gerd -- #define ENOCLUE 125 /* userland programmer induced race condition */