Lossless export has different specs?

BBE

Hello,

As a test I saved this video as a H.264 mp4. The bitrate came out to be 23903kbps and the audio is 129kbps. Frame rate 30. File size is 40.1 MB (42,068,111 bytes).

Here is the link to the original: https://drive.google.com/open?id=1zVEKfpgiOlPESz1X-kbXU5gl5Bf2uoG8

I then took this exact video and resaved it as a lossless export. No editing or modifying in any way. The copy came out with the same bitrate of 23903kbps but the audio is 156kbps. Frame rate 29. File size is 40.1 MB (42,111,908 bytes).

Here is the link to the lossless export: https://drive.google.com/open?id=1-YfTvLYP_r_QTzcTu_W8gn1WaY9yFxvY

How exactly did the frame rate drop down to 29 and the audio jumped up to 156? Shouldn't lossless be an exact copy?

Please take the first file and export it as lossless if you don't believe me. You will get the same results. I have also saved files and had the second copy come out with slightly lower specs. Each and every time it's either less or more. Close file size but never an exact match. Always something different. This can't truly be 100% lossless if the specs are off?

borate

Not the case here. Using FILE menu|EXPORT LOSSLESS VIDEO, the output was named "test." Identical.

BBE

Well, I'm even more confused now. We are getting different results.

Test 2:

Video #1

https://drive.google.com/open?id=1zaVF0GOBH5hlmm2mYSgtORLwlUb9nX7i

Video #2, resaved as lossless. Comes out with different frame rate and audio. Again, the same problem here.

https://drive.google.com/open?id=1eYJ1zld6Xo60mli6kufxJV8n0toOgWCf

I even took a screenshot showing that I am using lossless export as well as a screenshot showing the two files not matching.

Screens:

https://drive.google.com/open?id=1QkZmjh0b5b9FL7ZL6W-b6kYRjBTz-Qr3 saving

https://drive.google.com/open?id=1Ab_yZNmhOfMIZ2KQSYsPwmXUBthmoPGT comparison, does not match

Is it possible windows explorer is not reading the second file right?

borate

Exporting your original as lossless resulted in a slight change. But exporting that result as lossless once again did not.

BBE

Odd stuff! The original was made with VideoPad.

So the question is, is there a real difference in the two files or are the properties simply displaying wrong? I would think if the video was actually being rerendered then it wouldn't process so quickly. Lossless exports are immediate jobs. When I make these copies they process immediately like they should. I would know if it was rerendering just due to the time that takes. I don't see why Windows would be displaying inaccurate data though... but that's the only thing I can figure if there is not any real loss going on.

Appreciate you trying to help.

Dangerfreak

I just downloaded your original mp4 and made a losless export. The export file is slighty smaller (losless file: 42067995 bytes, original 42068111 bytes), the frame rate and the bitrates for video and audio are identical (Videopad version 6.02 beta).