On 4/29/16, Robin Stevens <[email protected]> wrote: > I am having trouble to get ffmpeg write to a named pipe in windows. I know > it's possible to write to a anonymous pipe with the command: > > ffmpeg.exe -vsync passthrough -f dshow -i video="AVerMedia SD 1 > Capture":audio="AVerMedia SD Audio Cap 1 (AVerM" -vcodec rawvideo -f > matroska - > > And I can read the pipe with ffplay.exe -i - > > But is it possible to write to a named pipe? > > I tried to by creating a named pipe with the following c# code: > > NamedPipeServerStream p_from_ffmpeg = new NamedPipeServerStream("tmp_pipe1", > PipeDirection.In, > 1, > PipeTransmissionMode.Byte, > PipeOptions.WriteThrough, > 1000, 1000); > > I checked if the pipe really exist with the pipelist.exe from > https://technet.microsoft.com/en-us/sysinternals/dd581625.aspx. > > Then I tried to write the output data from ffmpeg to the pipe by using the > following command: > > ffmpeg.exe -vsync passthrough -f dshow -i video="AVerMedia SD 1 > Capture":audio="AVerMedia SD Audio Cap 1 (AVerM" -vcodec rawvideo -f > matroska tmp_pipe1 > > and the following: > > ffmpeg.exe -vsync passthrough -f dshow -i video="AVerMedia SD 1 > Capture":audio="AVerMedia SD Audio Cap 1 (AVerM" -vcodec rawvideo -f > matroska pipe:1 > tmp_pipe1 > > Both commands are adding a file named "tmp_pipe1" to the directory of the > ffmpeg executable while the anonymous pipe isn't adding a file and is > working perfectly for me. The only problem is that I would like to > deinterlace, record with a codec and render/view more than one channel. So I > thought to run one instance of ffmpeg and pipe the outputs to multiple > instances of ffplay. I don't know whether it's possible to write the output > of ffmpeg to a named pipe in windows. Does someone has an answer?
I think you have to name it something like \\pipe_name or some odd... _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
