How to put black colour on screen without re-encoding?

[swalih]

I have videos. I just want to remove some scenes from the video without re-encoding. But removing it cause the change in subtitles. If i removed that, i would have to change the subtitles. So instead of it, without re-encoding i need to put black colour on the screen(fully or partially- partially means to put squares of black colour in a region. Audio should be enabled. The video is mkv, with h264 audio aac format. Is there a software to do it or how to do it maually?

[Baldrick]

You must reconvert if you want black boxes in the video.


It might be possible to add some kind of ssa/ass subtitles with black background images/overlay. But you can turn of the subtitles then.

[swalih]

is there a way then to just encode the black coloured part in the whole video? i want to put these black boxes not just for a frame, i need it for a minute or more.

[Baldrick]

Nope.

[swalih]

Then, can you suggest a software which will put black colour in the video in mkv with h264 and aac format and encode it in the same format.

Also, i need for a software which will rip my dvd movies fastly into mkv with h264 and aac format with good quality?

[Baldrick]

1. I don't know any easy method using free software. Maybe using avisynth and http://avisynth.org/mediawiki/Overlay
2. Rip with DVDFabDecrypter(free) or install AnyDVD or DVDFab Passkey and convert with VidCoder.

[swalih]

Thanks for your help, Baldrick