Windows server 2016 64bit
Clean installation (delete all old files and folders Program files, Appdata Local/Roaming)
Kdenlive Version 22.07.70 (rev. 8fa796356)
Error rendering:

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[mp4 @ 00000000064c7480] Timestamps are unset in a packet for stream 1. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mp4 @ 00000000064c7480] Encoder did not produce proper pts, making some up.
[mp4 @ 00000000064c7480] Application provided invalid, non monotonically increasing dts to muxer in stream 1: 1477632 >= 1477632
Current Position:        769

My command:

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"C:\Program Files\kdenlive\bin\melt.exe" C:\Users\Administrator\Videos\kdenlive-renderqueue\test1.mlt

MP4 file playing Ok. But different size compared to files not generated through the console.

I found opinion:

If the files play fine, you don't have to worry about it.

It means that in the input file, the timestamps associated with samples are not increasing monotonically. That shouldn't be the case, but I think that ffmpeg will usually correct these problems on its own.

If you are using an outdated ffmpeg version, updating to a newer one may help resolve these issues, in case it's a problem with the decoder rather than the actual input files.

https://superuser.com/questions/978888/ ... -in-ffmpeg

I found several solutions on stackoverflow. Example: https://stackoverflow.com/questions/665 ... -transcode

I edit or add parameters to .mlt file .
Consumer:
use_wallclock_as_timestamp="1" fflag="+genpts" vsync="0" enc_time_base="-1" video_track_timescale="1000"

Profile:
frame_rate_num="25" to r="25" or re="25"

No new errors, but old errors remain

Help me, please. I would really like it to work without errors. Thanks