Date: Mon, 24 Jan 2011 20:13:56 +1000 From: Da Rock <freebsd-questions@herveybayaustralia.com.au> To: freebsd-questions@freebsd.org Subject: Re: TV test image generator using mencoder Message-ID: <4D3D50E4.8070604@herveybayaustralia.com.au> In-Reply-To: <20110124084544.579885f9.freebsd@edvax.de> References: <20110124084544.579885f9.freebsd@edvax.de>
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On 01/24/11 17:45, Polytropon wrote: > For an amateur TV (ham) project, I'm searching for a > convenient way to create a test image DVD or CD using > FreeBSD's port mencoder. But I can't get this working. > Maybe somebody on list has an idea of how to accomplish > this. > > Input: a still image (jpg, gif, png) of a test picture, > as shown on TV, already available > > Output: a VCD-compatible MPEG video file which shows the > picture (which does not change) and plays a 1 kHz > testing sound (sine wave); the length of "video" > should be given in minutes > > More: a DVD-compatible output could be provided for > better quality if needed > > The idea is this: With a set of, let's say 5 of such > MPEG files, each lasting 10 minutes, I want to burn a > VCD because that's what the player in use can play best. > If it plays the in "repeat mode", every 10 minutes the > test image will change, the sound will stay the same. > The VCD can be done with mkvcdfs, I've already done > that for other purposes, works good. As this player > is a stand-alone device, there's no trouble getting > a TV (video or even antenna) signal out of a PC. :-) > > Background: The test VCD can be played in continuous loop > while the transmitter is running. This way, receiving > tests can be done, as there is a good testing signal > for making statements about video and audio quality. > The combination of both, also using something standar- > dized (instead of a camera input, showing the town > from above or a look out of the window across the > street) is buch better for making QUALIFIED statements > about signal quality. Adjustments to the equipment > can be done more easily. > > I've tried to do this with mencoder, but can't get any > usable results. > > How would you suggest to get this done? > > > > http://mplayerhq.hu The docs cover all that, and mencoder can output in vcd or dvd format.
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