On Mon, 2014-09-29 at 12:41 +0200, raf wrote: > Le 29 sept. 2014 à 12:34, Ralf Mardorf <ralf.mard...@rocketmail.com> a écrit : > > > On Mon, 2014-09-29 at 12:22 +0200, Florian Paul Schmidt wrote: > >> On 27.09.2014 16:59, Ralf Mardorf wrote: > >>>> A lot of consumer audio-video stand alone gear is using Linux, > >>>> e.g. television satellite receivers. IMO this market might be > >>>> more interesting when searching for a job, than the pro-audio > >>>> market or Internet presences are. > >>> > >>> Lip-sync is an issue, assumed you should have the abilities to fix > >>> it, you likely would find a job. > >>> > >> > >> Can you elaborate on that? What exactly is the problem? And what kind > >> of solutions are people looking for? > > > > I don't know if the Linux kernels used for audio-video consumer gear are > > used for audio and video processing, perhaps they are just used to > > provide menus etc., but since the end of the 90s I never experienced the > > good audio and video sync we had with German terrestrial analog > > television. All analog and digital satellite and digital terrestrial > > receivers I've seen didn't provide acceptable sync. Assumed at least > > some of those receiver should do the audio and video processing using > > Linux too, a smart solution to fix such issues, not by just providing > > fixed delays, but by detecting the exact drift and automatically fixing > > it, might be from interest for the consumer gear companies. Perhaps, > > they wouldn't care about a smart way to fix it, OTOH for colour > > correctness at least Germany cared, so we once upon a time got PAL. > > > > you did see that ? I'm surprised. Which brand ? > I've worked for two years on the A/V testbenches for sagemcom making a > whole lot of digital satellite receivers and never noticed that. > Until two years ago they used an RT system on STM32 processors. The > move to embedded linux was quite new, maybe introducing this issue.
I don't remember the brands of the satellite receivers I owned (discounter thingies), but a friend repairs receivers, so I've seen a lot. Many people in German switched to DVB-T, I can see it on my THOMSON DTI series 500. It could differ for different broadcasts of the same station. My claim isn't that the receivers cause the sync issue. I remember that at least some satellite receivers provided to manually set a delay, but AFAIK no auto-syncing option does exist (similar as PAL to ensure colour stability). My DVB-T receiver seems even not to provide to set a delay manually. _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev