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DM365 MJPEG Encoder minimum possible bitrate

Jayakrishnan
Expert 2790 points

Hi

I want to know the  minimum  possible  bitrate output of MJPEG Encoder (on DM365 platform)  for D1,30fps, and  how  to  achieve  this  with acceptable visual quality.

Often customers  want to set  limit on the bitrate output, so that the  encoder never crosses  this limit.

 Regards

JK

  • 0
    Intellectual 385 points

    Hi,

     

    In DM365 MJPEG encoder, output birate varies based on Qvalue (a parameter in IJPEGENC _DynamicParams/IIMGENC1_DynamicParams).

    Qvalue -- Quality factor for encoder (2: Lowest quality, 97 Highest quality) i.e 2 gives best compression/minimum bit rate, 97 gives best quality/maximum bit rate.

    For a reasonable quality and compression - a value of 50 can be used.

     

    As there is no rate control implementation in MJPEG encoder, output bit rate can't be predicted/controlled. It depends on complexity of image sequence and Qvalue.

    Regards, RSV