Add a watermark to .avi x Reencoding

[dexter30]

Is there a way (using VDub or other), to insert a watermark in several parts of an .avi file (e.g. a logo appearing every ten minutes with a duration of 10 seconds), so that I only have to reencode those parts where the watermark goes, leaving untouched the rest of the file?

Having to reencode large portions of a video that haven't even been touched sounds kinda silly to me...

I did a search but find no answers to this particular question.

Thanks in advance.

[jagabo]

You can do it in VirtualDub by splitting the file into parts. Direct Stream copy the parts without the logo. Reencode the parts with the logo (same codec, similar settings). Then append them all together.

[dexter30]

You can do it in VirtualDub by splitting the file into parts. Direct Stream copy the parts without the logo. Reencode the parts with the logo (same codec, similar settings). Then append them all together.

I tried it, but VDub says it can´t append the files because of the different data rates.

[poisondeathray]

You can do it in VirtualDub by splitting the file into parts. Direct Stream copy the parts without the logo. Reencode the parts with the logo (same codec, similar settings). Then append them all together.

I tried it, but VDub says it can´t append the files because of the different data rates.

What that the exact error message? If not, please post it.

Are you doing this video only (no audio)?

Did you use similar encoding settings?

You can try avidemux as another option to append

[dexter30]

You can do it in VirtualDub by splitting the file into parts. Direct Stream copy the parts without the logo. Reencode the parts with the logo (same codec, similar settings). Then append them all together.

I tried it, but VDub says it can´t append the files because of the different data rates.

What that the exact error message? If not, please post it.

Are you doing this video only (no audio)?

Did you use similar encoding settings?

You can try avidemux as another option to append

This is the error I get:




This is the part1, the segment I applied the logo filter:




This is the part2, the segment that remains untouched:


[/img]

[poisondeathray]

The streams have to be encoded with same specs. Even something like packed bitstream vs. non packed can screw up the append

Use mediainfo and gspot for more information on each section

Did you try avidemux? It's sometimes less picky

[dexter30]

The streams have to be encoded with same specs. Even something like packed bitstream vs. non packed can screw up the append

Use mediainfo and gspot for more information on each section

Did you try avidemux? It's sometimes less picky

Avidemux seems to do the job. However the audio came up with a little gap in every joining point. Thanks a lot for your help.

[jagabo]

the audio came up with a little gap in every joining point

That might mean you marked in and out on inappropriate frames. When using Direct Stream Copy a segment you keep must always start on a key frame. Keep in mind that the frame at the mark-in point is included in the segment. The frame at the mark-point is not included. So if you mark in at frame 100 (and this is a key frame) and mark out at frame 200 the saved segments will frames 100 to 199. For your purposes (mixed Direct Stream Copy and reencoding) you should stick to marking in and out only on key frames. You can move directly to key frames in VirtualDub by holding down the shift key while moving the frame slider or arrow keys. A [K] appears in the status area at the bottom of VirtualDub's window to indicate a key frame.

[poisondeathray]

However the audio came up with a little gap in every joining point.

And in avidemux, did you try audio=> build vbr time map ?

[dexter30]

the audio came up with a little gap in every joining point

That might mean you marked in and out on inappropriate frames. When using Direct Stream Copy a segment you keep must always start on a key frame. Keep in mind that the frame at the mark-in point is included in the segment. The frame at the mark-point is not included. So if you mark in at frame 100 (and this is a key frame) and mark out at frame 200 the saved segments will frames 100 to 199. For your purposes (mixed Direct Stream Copy and reencoding) you should stick to marking in and out only on key frames. You can move directly to key frames in VirtualDub by holding down the shift key while moving the frame slider or arrow keys. A [K] appears in the status area at the bottom of VirtualDub's window to indicate a key frame.

It does make sense, i´ll try it, thank you for your help.

[dexter30]

However the audio came up with a little gap in every joining point.

And in avidemux, did you try audio=> build vbr time map ?

You mean do this after appending all segments? Yes, I tried it and the now there is sound at the joining points but it is screwed up.

Anyway, I found that demuxing the audio from the original file and adding it to the new one with all segments together, the result is perfect.

Thank you very much for your help.

[jagabo]

Anyway, I found that demuxing the audio from the original file and adding it to the new one with all segments together, the result is perfect.

Good idea.

[sambat]

In VirtualDub, if you use the logo filter with 'blending' and Smart Rendering, would that not limit the encoding to the parts with the logo?

[jagabo]

In VirtualDub, if you use the logo filter with 'blending' and Smart Rendering, would that not limit the encoding to the parts with the logo?

I don't think so. If you do any filtering VirtualDub will decompress every frame, send it through the filter chain, then recompress. It has no way of knowing beforehand if the Logo filter is going to do anything with any particular frame.

[Gavino]

If you set an 'opacity curve' on the filter (also known as 'blending') and select Smart Rendering, then VirtualDub will not re-render regions where the opacity is set to zero. In that case, it does know that the filter has no effect on those frames. Note that Smart Rendering is a different mode from Direct Stream Copy - in the latter, the filter chain is completely switched off.

[jagabo]

If you set an 'opacity curve' on the filter (also known as 'blending') and select Smart Rendering, then VirtualDub will not re-render regions where the opacity is set to zero.

I didn't even know that ability had been added to VirtualDub!

[sambat]

There's a Jimmy Ruska clip that shows how - it doesn't mention Smart Rendering;I assume that was subsequent to the video.

http://www.youtube.com/watch?v=2MWoVY9mYbk

[jagabo]

Funny. I couldn't figure out how do use the blender (didn't know about shift click) and I happened to stumble across that help video while searching for instructions! Thanks.

[pepegot1]

Use Videostudio X2 Pro. You just add an overlay(containing your watermark-with desired duration) to any places you want on the overlay track. You can lighten the watermark, if you desire using the transparency slider. Quick and simple, unlike VD.

[dexter30]

Use Videostudio X2 Pro. You just add an overlay(containing your watermark-with desired duration) to any places you want on the overlay track. You can lighten the watermark, if you desire using the transparency slider. Quick and simple, unlike VD.

This proggy is nice but makes video choppy right at the point where the logo appears, it lasts milisseconds but it´s noticeable.

Any ideas to get around this?

[jagabo]

This proggy is nice but makes video choppy right at the point where the logo appears, it lasts milisseconds but it´s noticeable.

Are you talking about previewing within VideoStudio? That's probably because it's stopping to render the effect. It shouldn't happen in the encoded output.

[dexter30]

This proggy is nice but makes video choppy right at the point where the logo appears, it lasts milisseconds but it´s noticeable.

Are you talking about previewing within VideoStudio? That's probably because it's stopping to render the effect. It shouldn't happen in the encoded output.

No, it´s just the opposite: in the preview, the video runs smoothly. When playing the encoded output, there is a little stop just at the point the logo appears!

I tried with two different videos and several kinds of effects for logos/titles and no success..

Now that is important: this problem only happens when I check 'Smart Render' option. But skipping that option will cause the whole video to be reencoded which is exactly what I don´t want.