removing an overlay advertisement in ts file

[video-phile]

Hi! I 'd like to do a little editing to a DVB recording (ts consisting of h.264 video and mp2 audio).
Actually I wish to hide an annoying advertisement over the video (at the corner of frame) occurring a
couple of times, by smudging it, overlaying it or painting on it.
To avoid reencoding the whole file, I am thinking of splitting it, importing the parts to be proccessed
to an editor, editing as appropriate and saving them as ts (or m2ts maybe) h.264, identical to the
original. Then I could hopefully rejoin parts. Can anyone recommend the proper video editor?
Thank you

[Baldrick]

Cut without reconverting with latest videoredo. Delogo with...hmm...maybe avidemux.

But you will probably get sync problems.

[video-phile]

Oh yes. Thanks for the idea. I did it with virtualdub finally (logoaway filter) and the whole trick seems to be working. I had of course to convert virtualdubs's x264 avi output to ts. I somehow extracted its elementary streams and just remuxed them to ts with tsmuxer Gui. Then I rejoined some parts with videoredo to check and the output file seems to be OK.

[video-phile]

Hm... I tried another movie today without luck at all. And the problem is not the sync; it's the merging. Rejoining pieces is not always achievable.