Adding Black Bars only to Bottom

[kookee]

Hi, I have a widescreen video. I want to convert it to full screen letterbox. When i convert widescreen to full screen, it automatically converts so that there are equal black bars on the top and the bottom. I want the black bars to be all on the bottom and then have subtitles inside the black bars. I've tried looking through winavi and virtualdub options with no success. it seems rather simple and yet i cannot do it. can you tell me how i can do it with winavi? if not, any other program will do. thanks in advance!!

[AlanHK]

What are you starting with? A DVD? An AVI file?

Do you want to make a standard DVD to watch on a player, or on a PC monitor?

When i convert widescreen to full screen, it automatically converts

What is "it", how are you making this conversion?


Well, if we assume you have an AVI file, and VDUB, you also need AVisynth. If you don't have that, install it.

Now you can create a simple Avisynth script to do what you want.
Avisynth functions are detailed in a "docs" folder under its install directory.

You can do it by hand, but a useful tool is "FitCD".
In FitCD select "Source" as your AVI file.
You want full screen, so deselect "anamorphic".

If NTSC, you probaly want to make a 720x480 DVD.

From these settings FitCD will give you a script like:

AVISource("P:\S60-104.avi")
LanczosResize(720,368,0,0,624,352)
AddBorders(0,56,0,56)

This is for an AVI file with dimensions 624x352.
Notice the last line: the AddBorders command.

That puts 56 pixels on both top and bottom.

You can change this: eg to
AddBorders(0,12,0,100)
putting 12 at the top, 100 at the bottom.

(Note that he height = 368 + 12 + 100 = 480 pixels)

Save the script as an AVS file.
Open in VDUBMOD to preview. You can edit the script there, use F5 to save and reload.
Then feed the AVS to your encoder -- most encoders that accept AVI also accept AVS files.

[The Chaos Chief]

You're right. It is simple... No scripting needed if you use Sony Vegas:

Add the clip to the timeline and click 'Event/Pan Crop', then select a preset that automatically alters the aspect ratio. You can also create your own setup though; I always have success in aspect ratio restoration or modification when I use Sony Vegas. You can pan the video up so that your bar is only on the bottom, and if you're still unhappy, you can use 3D track motion to further get the results you want... within seconds.

[kookee]

thanks!! i can't try it right now, but i will tonight. i'll tell u how it goes.

[kookee]

i have an avi file and i want to convert it to 3gp with winavi mp4 converter.

i'm new to scripting. here's what my script was:
AVISource("<filename>.avi")
AddBorders(0,0,0,250)
TextSub("<file name>.srt")
i preview it in virtualdub and there is sound, but when i convert with winavi, there is no audio. do i need to make a filter for audio too?

[AlanHK]

I don't use WinAVI.

Normally I just use BeSweet (Wizard) to extract audio directly from the AVI and convert it to MP2 at 48000 sample rate.

You only need to worry about commands that affect the sequence or length of the file, mainly trim(). But you don't appear to do that.

[kookee]

nvm about the audio, i got it. thanks for all ur help.
i added a wavsource filter and now there is sound. thanks again!