can i show subtitles over video at the same time ?

Upload a tarball with debugging information

1. Run the command that produces the out-of-sync subtitle output, but with the additional --make-test-case flag, i.e.: subsync ref.mkv -i in.srt -o failed.srt --make-test-case
2. This results in a file of the form ref.mkv.$timestamp.tar.gz or similar.
3. Please upload this file using the "attach files" button at the bottom of the text prompt.

That's all! Thank you for contributing a test case; this helps me to continue improving the sync and to add additional integration tests once improvements have been made.

Additional context
Add any other context about the problem here that might be helpful.

i know after this proceess subtitles show slightly show earlier than video. but in some movies like having language which i know needs sync subs to video exact same time. so what i want is to make subs sync to video with exact same time. is that possible ?? thanks in advance.

Start by reproducing the reported behavior with the subsync ref.mkv -i in.srt -o failed.srt --make-test-case command and inspect the generated debugging tarball. Determine whether the requested exact subtitle timing is within the project's synchronization scope; done means a documented, reproducible outcome for this case.