Unscruffed
Programmer
Is there any way around the 2gb file size limit using VB6?
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File Size Limit
- Thread starter Unscruffed
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I wasn't aware that there was a file size limit. However, after a quick Google search to find out what you were talking about, I stumbled on this article:
It looks like it addresses your question.
It looks like it addresses your question.
dilettante
MIS
You'd need to do I/O using API calls. If you hunt around you may find a Class for doing this so you don't have to reinvent the wheel.
HughLerwill
Programmer
- Thread starter
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Unscruffed
Programmer
Thanks guys. The 2 links provided heaps of info that I couldn't find before.
The reason I asked this question was that I needed to join a couple of DVD Vob files, so I could edit a clip that ran across the Vob boundary. VB clapped out when the output file reached 2GB with an "Invalid File Handle" error. I remembered coming across this once before and found a simple solution, but couldn't remember what it was. About half a slab of beer later, I remembered it was the good ol' faithful Copy command from DOS. In the end, I "Shelled" out a "Copy" command to "CMD.EXE" like this:
Shell "CMD /C COPY ""C\PATH TO FILES\FILE1.EXT"" /B ""C\PATH TO FILES\FILE2.EXT"" /B ""C\OUTPUT.EXT""", vbHide
The CMD /C switch tells CMD to exit on completion.
Long filenames are enclosed in quotes, and the /B switches indicate the source files are binary (use /A for Ascii files).
Overall progress can be monitored from VB by using a timer to check the size of the output file. I used FSO for this, as VB's FileLen function has the same limitations. A few easy calculations enables monitoring the progress of each source file as well. As mentioned in the above linked documents, use Currency variable types for this.
The beauty is that VB is not doing the work, so the app runs freely without any freezing, and there is no need to deal with API. A simple, but effective solution with no size limits.
Be good. If you can't, don't get caught!
The reason I asked this question was that I needed to join a couple of DVD Vob files, so I could edit a clip that ran across the Vob boundary. VB clapped out when the output file reached 2GB with an "Invalid File Handle" error. I remembered coming across this once before and found a simple solution, but couldn't remember what it was. About half a slab of beer later, I remembered it was the good ol' faithful Copy command from DOS. In the end, I "Shelled" out a "Copy" command to "CMD.EXE" like this:
Shell "CMD /C COPY ""C\PATH TO FILES\FILE1.EXT"" /B ""C\PATH TO FILES\FILE2.EXT"" /B ""C\OUTPUT.EXT""", vbHide
The CMD /C switch tells CMD to exit on completion.
Long filenames are enclosed in quotes, and the /B switches indicate the source files are binary (use /A for Ascii files).
Overall progress can be monitored from VB by using a timer to check the size of the output file. I used FSO for this, as VB's FileLen function has the same limitations. A few easy calculations enables monitoring the progress of each source file as well. As mentioned in the above linked documents, use Currency variable types for this.
The beauty is that VB is not doing the work, so the app runs freely without any freezing, and there is no need to deal with API. A simple, but effective solution with no size limits.
Be good. If you can't, don't get caught!
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