As I understand from the code, the Q value cannot be extracted from Jpeg header
and has to be specified manually. I noticed that image quality of the
transmitted JPEG video depends significantly on this value. But, as I
understand from reading libjpeg docs, there is no standart to scale of the Q,
and different applications can understand same value differently. So, is the Q
value I have to provide to live library the same that I specified to libjpeg to
compress the image? libjpeg uses 0-100 scale by default, but this can be
changed to (more standard?) 1-255 scale.
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