On Saturday 08 December 2001 17:28, Karsten M. Self wrote: > on Fri, Dec 07, 2001 at 10:27:48PM +0800, csj ([EMAIL PROTECTED]) wrote: > > lav2wav +p /xb/base/input-20011207-1948.avi | mp2enc -o audio.mp2 > > INFO: Norm set to PAL > > **ERROR: Error opening /xb/base/input-20011207-1948.avi: File too > > large **ERROR: EOF in WAV header > > **ERROR: failure reading WAV file > > > > The program comes from a package which claims to have large file > > support, which I enabled at compilation: > > > > mjpegtools-1.5-20011611$ ./configure --help | grep large > > --disable-large-file, disable large file support > > (>2GB) > > > > My question: is it the OS or the program's fault? If it means > > anything, other programs (all encoders) return a more generic > > "Could not open" error message. What puzzles me is that I was able > > to create the file thru another program (xawtv's streamer). > > > > I'm running kernel 2.4.16 with libc6 (2.2.4-5). What do I need to > > do to eliminate this error? Any tips appreciated. The multi-GB file > > is desperately awaiting compression. > > Large file support is a complex situation, not something you can just > turn on and off. Essentially, the problem is that all parts of the > process chain have to support it. > > Not familiar with the tools you're using, but you might want to try > doing other operations on a large file or files to see what does or > doesn't work with it. Is your program invoking another application > which may not have LF support?
Let me see. I tried something like (actual bash session is now fuzzy): mkfifo movie.avi dd if=original-4GB-capture.avi of=movie.avi ffmpeg [option, options] movie.avi This lets ffmpeg encode half of the one hour and a half test movie. Several retries convince me that it's not a random segfault. I even diff'ed the resulting files, same tropical fruit. Since 4GB * half = magic 2GB limit, I have the suspicion that it's either an error in the video stream (say an EOF inserted in the middle of the file by the capture program, streamer) or a problem with the OS. What may be of further interest: applying ffmpeg on the raw file (original-4GB-capture.avi) results in an error message (to the effect) that the file can't be found. Side question: are the GNU utilities afflicted by the 2 GB limit? Can dd properly handle 2GB+ files. -- Sir Isaac Newton: "If I have seen further, it is by standing on the shoulders of giants."
