[Libav-user] the difference between mjpeg in ffmpeg and libjpeg

[qw]

Hi,


JPEG has adopted many standards. There are several jpeg codec in ffmpeg, such as mjpeg, mjpegb, ljpeg, jpegls. libjpeg is another open source of jpeg codec. what's difference between mjpeg in ffmpeg and libjpeg? Does libjpeg support all JPEG standards/algorithms? In libjpeg, jpeg encoder accepts quality level as input parameter, while mjpeg uses bit rate as input parameter in ffmpeg. Does mjpeg have quality level as input parameter instead of bit rate?



Thanks!


B.R.


Andrew
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