[segment @ 000001ec1ee5eb00] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[segment @ 000001ec1ee5eb00] Non-monotonous DTS in output stream 1:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.