Filtering an Xvid file

[the gladiator]

I would introduce myself as an “advanced newbie” (I know the basics of audio-video and the main tools but I’m not mastering them).

I’m know facing this issue for which I look for your help: I have a number of xvid files that I would like to filter (I forgotten to do that when I encoded them and I don’t have now the original files). The “simple” solution would be to decode them, apply the filters and re-encode but I would have loss of quality and loose of time. Is there any other solution ?

(I really hope this wouldn’t be a trivial question !!!)

[redwudz]

Just drop them into VirtualDub and apply filters as needed. You don't have to 'decode' them, but you will have to re-encode them after filtering. For filters, see: http://neuron2.net/

And welcome to our forums.

[manono]

Hi-

If you install ffdshow and allow it to decode your videos, you can do quite a lot of different kinds of filtering during playback, limited only by the power of your CPU. For a permanent fix, you'll have to reencode.

[the gladiator]

thanks a lot for the clear directions... and the welcome

[guns1inger]

What sort of problems are you hoping to fix ?

[the gladiator]

I need mainly to deinterlace some of my clips.

If I'll use ffdshow to decode (manono's way) my fear is that the filter won't be clever enough to ignore the xvid clips that don't need to be deinterlaced and will lower their quality.

If I'll use VirtualDub to filter them (redwudz's way) I also need to re-encode them and I would avoid to go through the parameters selection process and, again, my fear (workload apart) is about the result of a xvid re-encoded.

[jagabo]

Reencoding with Xvid can be as good as you want it to be. Use single pass quantization mode (constant quality). Set the quality you want and encode.

There are many players that have deinterlace options that you can enable/disable as necessary. VLC, Media Player Classic...

[manono]

If some idiot resized them improperly and didn't IVTC/Deinterlace, you won't be able to get them deinterlaced anyway.