Log in

View Full Version : Comparing 2 video streams

Afrinux
17th January 2007, 08:33
Hi all!

I would like to know if there is someone out there who knows an easy way to compare 2 video(mpeg2) streams.
I want to compare 2 video streams. The first one is the original, and the second one is the original with few changes. I want to know which part and how the data are different.
I was using a binary editor to compare, but I realize it is just time consuming and cant lead to a good conclusion.
Thanks in advance.
Guest
17th January 2007, 08:40
Are you just wanting to know what binary data is changed, or do you want its meaning in MPEG2 syntax as well? The former is easy, the latter is hard.
jongov
17th January 2007, 08:46
Hi,
Try my MPEG TS Utils for MPEG2 transport streams:
http://tsviatko.jongov.com/index_prj_mpegtsutils.htm

or

MPEG PS Utils for MPEG2 program streams:
http://tsviatko.jongov.com/index_prj_mpegpsutils.htm

or

MPEG Video ES Utils for MPEG2 video elementary streams:
http://tsviatko.jongov.com/index_prj_mpegvideoesutils.htm

Maybe these will help.

Regards,
Tsviatko Jongov
http://tsviatko.jongov.com
Afrinux
17th January 2007, 10:41
Are you just wanting to know what binary data is changed, or do you want its meaning in MPEG2 syntax as well? The former is easy, the latter is hard.
I just want to know which binary data have changed(from which address to which address ). Of course knowing the syntax as well would help me a lot.

jongov, thanks for the tools. I will use them and I will give you feedbacks.
Thank you, both of you for your time.
Regards,
Guest
17th January 2007, 15:38
@Tsviatko

That's an interesting project page you have there! Thank you for telling us about it. Any chance of getting source code for all the DirectShow filters (some have no source code)?
hank315
17th January 2007, 18:22
@Tsviatko
Thanks for the changes you made to the MPEG2 ES program.
Matrices are shown nicely now and the GROUP_START_CODE shows all necessary information :)
Also the added slice/slice_details info is pretty cool...
jongov
17th January 2007, 21:18
Hi,
I'm glad that I can help.
About the filters with no sources - they are part of commercial future project.

Regards,
Tsviatko Jongov
http://tsviatko.jongov.com
Afrinux
18th January 2007, 02:01
Hi jongov!
Nice tools you have there. They are pretty handy to see what's inside the MPEG stream with the visuals.
Thank you for sharing.