Video scan time vs. Video+Audio scan time
Posted: Mon May 04, 2026 8:06 pm
Video scan time vs. Video+Audio scan time.
Video mode.
Hash - Video -vs.- Hash - Video+Audio / Music
Why is Video only so much faster compared to Video+Audio?
We're talking seconds vs. minutes.
(Depending on file sizes... & granted that you're hashing two streams vs. 1... But still V+A takes significantly longer then the V alone.)
i assume you're using ffmpeg
& using a, -f streamhash -hash md5 -map 0:v, for the Video alone?
not sure what you're doing for the V+A?
maybe you're doing a framehash, & then generating a single hash'd output value from that?
-f framehash -hash md5... & then ... ???
but, if so, is there any reason for that, as opposed to using streamhash for both the V & A
(& then generating a hash on that, if you're looking for only a single output result)
streamhash on V+A takes only slightly longer then streamhash on V alone, & both are far quicker then framehash.
(& granted, I don't really understand such things, but I can see the time differences involved.)
Video mode.
Hash - Video -vs.- Hash - Video+Audio / Music
Why is Video only so much faster compared to Video+Audio?
We're talking seconds vs. minutes.
(Depending on file sizes... & granted that you're hashing two streams vs. 1... But still V+A takes significantly longer then the V alone.)
i assume you're using ffmpeg
& using a, -f streamhash -hash md5 -map 0:v, for the Video alone?
not sure what you're doing for the V+A?
maybe you're doing a framehash, & then generating a single hash'd output value from that?
-f framehash -hash md5... & then ... ???
but, if so, is there any reason for that, as opposed to using streamhash for both the V & A
(& then generating a hash on that, if you're looking for only a single output result)
streamhash on V+A takes only slightly longer then streamhash on V alone, & both are far quicker then framehash.
(& granted, I don't really understand such things, but I can see the time differences involved.)