# Basic info <!--- Add commit SHA used to reproduce --> - Encoder and decoder (float): fffce66f - Decoder fixed-point : 6ce1f51f # Bug description sometime after the decoder verification, a new issue appeared in bitrate switching and frame lost for the stereo mode. The decoder is switching from 96 kbps to 128 kbps and then it loses 2 frames consecutively. The second lost frame shows a major artefact. on the image below, from top to bottom, - 1: Bad frame indicator (1 = frame lost) - 2: element bit rate - 3: float decoder around verification time, left channel - 4: fixed point decoder around verification time, left channel - 5: current float decoder, left channel - 6: current fixed point decoder, left channel - 7: diff between 3 and 4 - 8: diff between 5 and 6  # Ways to reproduce both the bitstreams with and without frame lost are uploaded to Box at : _EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1048 dp03a6s07_-dtx_-stereo_sw_13k2_to_128k_10fr.bin_48.bit (no frame lost) dp03a6s07_-dtx_-stereo_sw_13k2_to_128k_10fr.bin_48_eid.bfi (problematic bitstream) command line : IVAS_dec stereo 48 bit syn <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary. -->