Hi,

I'm trying to decode a video file using Tao.FFMpeg, but am hitting what seems to be a very basic problem.

This is my code:


int ret;
IntPtr pFormatContext;
ret = FFmpeg.av_open_input_file(out pFormatContext, path, IntPtr.Zero, 0, IntPtr.Zero);
if (ret < 0)
throw new Exception("couldn't open input file");
ret = FFmpeg.av_find_stream_info(pFormatContext);
if (ret < 0)
throw new Exception("couldnt find stream informaion");
formatContext = (FFmpeg.AVFormatContext)Marshal.PtrToStructure(pFormatContext, typeof(FFmpeg.AVFormatContext));
if (formatContext.nb_streams == 0)
throw new Exception("No streams found!");


The problem is that formatContext.nb_streams is always 0!
I've tested it on various files, video and audio, but it's always the same.

I'm using my own windows build of ffmpeg. This problem goes away when I use the default ffmpeg dlls in win32deps, but I need it to work with my own build.

Any help is appreciated.

Thanks,
klk