|
@TrueIndigo,
You may have to prebatch your scripts into segments of approx 50 input clips, output intermediate lossless workfiles .AVI's then do your master edit, inputing from the 4 intermediate workfiles .AVI's.
Until you try on your PC with your codecs you won't know if you will have problems.
AviSource() uses Video for Windows (VfW) codecs, some formats do not have a VfW codec. It is guarenteed to provide frame accurate seeking. If you have an appropriate VfW codec it just works.
DirectShowSource() uses M$ DirectShow API's intended for writing Media Players. It is NOT guarenteed to provide frame accurate seeking, although many formats actually do get it right. Nearly all formats provide DirectShow codecs, so you can actually decode your stream without a VfW codec. If your format does not implement frame accurate seeking and your encoder app plus your script require it, then you may need to preprocess your stream out to a lossless intermediate format like Huffyuv or raw uncompressed .AVI's.
People do not use DirectShowSource() always because it so often sucks. There are many format specific *Source() filters available like Mpeg2Source(), etc. Generally if your format has a custom source pluggin use it.
|