How do I blank a few frames of MPEG-2 video?

[SteveDimond]

Hi,

I have a DVD-compatible MPEG-2 system stream with AC3 audio which I created myself using a stand alone DVD recorder. Unfortunately, the first few frames of video (approx 0.5 seconds worth) show an image which I would like to remove. Initially, I just cut these frames out using the TMPGENC MPEG Editor, but this meant I lost the first three words of narration. Is there a way with TMPGENC Plus, TMPGENC Express or TMPGENC MPEG Editor (I have all these products) or a freeware program to turn these few erroneous frames black while keeping the audio synced?

BTW, I have tried searching these forums for an answer, but a search for "mpeg frame blank" and variants thereof returns an esoteric bunch of completely irrelevant matches. If I knew what to call what I'm looking for I'm sure I'd have found an answer already!

Many thanks,
Steve

[Baldrick]

Maybe MPEG Video Wizard, but check so it doesn't reencode the entire video.

Or the complex way:
Demultiplex the video to mpv and ac3(split the audio and video) using for example tmpgenc under file->mpeg tools.
Use cuttermaran and cut the start, insert a new clip from something else(cut out a black part from the video or something). Save as a new mpv.
Multiplex the new video and ac3, you can do that when you author to dvd.

[SteveDimond]

Thanks. I will try your complex method, although I am a little bit worried about losing audio sync. I think I will just demux and remux the MPEG first and see whether any audio sync issues arise before I cut and join.

Steve