Please forgive the broad mailing. I am using a modified ffmpeg (I pulled in motion detection stuff from the motion project, and insert text into the image before compression) to read 30 fps from a v4l device (bt878) and render to MPEG. The chip is initialized in yuv420p format, which is what the mpeg encoder wants to see so the real-time encoding process can keep up with the frame rate (i.e., no conversions). However, I need to periodically (once or twice per second) create a snapshot and save it as a commonly recognizable 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! Joe Briggs
