Avisynth: Append mpg script ?

[zzyzx2]

Hey all. I have seen somewhere that someone posted an avisynth script to append an mpeg clip. So instead of loading just 1 mpeg, it would load 2, and then use the processing settings to edit both back to back as one clip.

I have a script alread, but doesnt seem to work:

FFMpegSource2("%1",atrack=-1)++\
FFMpegSource2("buffer.mts",atrack=-1)
DelayAudio(1.2)


I have edited it to load mpegs but cant load mpegs with ffmpegsource, but I can with DirectShowSource. So I have tried this script:

DirectShowSource("%1")
DirectShowSource("buffer.mpg")
DelayAudio(1.2)


When I use the above script, I am only loading and editing the second clip. I cant seem to get an mpeg to do the same trick as the sample on top does with MTS files.

[AlanHK]

You forgot the ++ to join them.
You were loading one, then throwing it away when you loaded the second one.

DirectShowSource("%1") ++\
DirectShowSource("buffer.mpg") 
DelayAudio(1.2)

See Splice.

However, it's not really a good idea to join MPEGs with Avisynth. It decodes the input and you have to reencode to make a new MPEG, which is pretty slow and will cause a quality loss.
There are MPEG editors listed here in the tools section that can join without reencoding. I like MPEG-VCR but it isn't free.

But if you want to do any filtering beyond a simple join, then you'll need to reencode, so go ahead.

The usual way to load MPEG though is to use the DGMPGDec plugin.

[zzyzx2]

I am sure I tried it with the ++\, but maybe I will try it again. I will be using some filters, so I need to recode the entire thing again. Thanks for the reply!!

Will let you know how it works.

[jagabo]

DirectShowSource() isn't always frame accurate. Use DgIndex to build an index (.d2v) file of all your MPEG sources, then use Mpeg2Source("filename.d2v") instead.

[zzyzx2]

Thanks for all the replys guys. I will look into your info jagabo if I encounter any problems, but for now its working great. What I am doing is batch encoding a bunch of movie clips on a crappy camcorder. It had digital image stabilization, but wasnt very good. I am using a script I found from another member on this forum (MJ Peg, thanks, I should remember to thak you on the other forum. BTW its working!!!). Its around 11;30pm, so maybe I should post a topic how its working, it could help other people how to do a batchlist with vdub and deshaker.