[Libav-user] filtering_audio.c example not working

Ron Woods rwoods at vaytek.com
Wed Nov 14 04:17:21 CET 2012

Per your recommendation, I tried the following:
	filtering_audio test.mp4 > test_audio
	ffplay -f s16le -ar 8000 -ac 1 test_audio
but with no better luck than with:
	filtering_audio test.mp4 | ffplay -f s16le -ar 8000 -ac 1 -

Where to search "trac tickets"?

-----Original Message-----
From: libav-user-bounces at ffmpeg.org [mailto:libav-user-bounces at ffmpeg.org] On Behalf Of Stefano Sabatini
Sent: Tuesday, November 13, 2012 5:29 PM
To: This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter.
Subject: Re: [Libav-user] filtering_audio.c example not working

On date Tuesday 2012-11-13 16:26:13 -0600, Ron Woods wrote:
> I have tried it on AVI or MOV input file as well -- same result; so, no, it doesn't seem to depend on input file.
> I am using same filter technique in another context to transcode audio from input movie to WAV output file, and it works fine there.
> Maybe it is something to do with the piping to ffplay that is not working right in Windows?

Possible. Try to put the output in a file, and then read it with ffplay. IIRC there was an issue with Windows and pipes (and I'm not sure cmd.com really supports them), you may want to search in trac tickets.
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