Date: Thu, 18 Oct 2001 10:54:21 -0700 (PDT) From: bruno schwander <bschwand@dvart.com> To: multimedia@freebsd.org Subject: Re: fxtv and real-time mpeg capture (status) Message-ID: <Pine.BSF.4.21.0110181029420.73452-100000@mail.dvart.com> In-Reply-To: <20011017205612.A2891@otto.oss.qwest.net>
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I am to the point where I can successfully grab an mpeg1 1152Kbit/s and mp2 224Kbit/s stream at 20fps with fxtv piping into ffmpeg. This on an AMD duron 750MHz, with fxtv and ffmpeg taking together ~75% cpu time. So, it falls short of 30fps VCD quality, but it worked well last night to record southpark... gotta get a 1.4 GHz :-) Fxtv is actually consuming twice as much cpu time as ffmpeg (probably because of the conversion to ppm, and because I do some inefficient things) Currently it uses aio_xx calls, so the kernel must have AIO_VFS compiled in. (it was an easy hack. the whole thing is a hack anyway...) TBD: - audio/video sync (not tested extensively, there may be some drift) - replace aio_xx with select()/poll() - clean memory/proc handling to reduce hangs and crashes ! - add other available ffmpeg options in the GUI (currently only format and bitrate) - speed up if possible I'll post a link when I get there. Probably some time next week. bruno To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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