This longplay was rejected because it did not meet the following requirements:
=> The required signature is missing from the video or is not properly formatted.
=> Longplays of "older" consoles need to have their resolution doubled with no smoothing.
In this case, the submitted video was 160x144, and needed to be 320x288.
=> Video quality was unsufficient. Compression was set too high.
=> Texts in the game were garbled. Emulation issue? Bad ROM dump?
=> Oh, yeah! I almost forgot: the longplay is incomplete. You didn't reach the end of the game.
You can refer to the attached screenshot for evidence.
Here are some pieces of advice to help fix the errors:
You need to do the MeGUI / mkvmerge GUI part in the following FAQ:
Feel free to join our IRC channel
for specific help.
Hope to hear from you soon. ;-)