I have two video clips of the same music video. Both are made of the same video and audio tracks but of different sources and quality.
One of them is a rip from an officially released media, so the video/audio synchronization in it can be used as reference.
The other was made by muxing video and audio streams from different unrelated sources. Whereas they appear perfectly in sync to human eye and ear resembling the original, I would like to somehow gauge it with sample-perfect precision to see how close the sync to the original actually is.
I can use some video players to nagivate frame-by-frame to the same frame in both clips. But I don't know how to see the accurate position in the audio waveform which that frame corresponds to (to be perfectly clear, the brackets encompassing the audio fragment corresponding to a particular video frame). What tools can I use for this?
Ideally I want the tool to tell me something like "your second clip's audio is muxed 0.0005 seconds behind comparing to the reference clip". I will then use that 0.0005 seconds result to correct the second clip by re-muxing it with the right offset.