: Switch from Waveform to Spectrogram. Flags are frequently drawn into the audio frequencies (Visual Audio Steganography).
If the metadata is clean, the "secret" is likely inside the video or audio streams. tango part3mp4
If the previous steps fail, the data is likely encoded using a specific steganographic algorithm. : Switch from Waveform to Spectrogram
Could you clarify if this is for a (like PicoCTF or HTB) so I can provide the exact solution? tango part3mp4
Metadata can often hide clues about the tool used to create the file or direct "leaks" of the flag. : Run exiftool tango_part3.mp4 .
: Use ffmpeg -i tango_part3.mp4 -vf "negate" output.mp4 to invert colors or extract every frame to a folder for automated scanning: ffmpeg -i tango_part3.mp4 thumb%04d.jpg -hide_banner Summary of Findings