2010/4/17 David Liontooth <lionteeth@xxxxxxxxxx>: > HoP wrote: >> >> 2010/4/17 Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx>: >> >>> >>> On Fri, Apr 16, 2010 at 7:19 PM, David Liontooth <lionteeth@xxxxxxxxxx> >>> wrote: >>> >>>> >>>> I'm using a HVR-1850 in digital mode and get good picture and sound >>>> using >>>> >>>> mplayer -autosync 30 -cache 2048 dvb://KCAL-DT >>>> >>>> Closed captioning works flawlessly with this command: >>>> >>>> zvbi-atsc-cc -C test-cc.txt KCAL-DT >>>> >>>> However, if I try to run both at the same time, I get a device node >>>> conflict: >>>> >>>> zvbi-atsc-cc: Cannot open '/dev/dvb/adapter0/frontend0': Device or >>>> resource >>>> busy. >>>> >>>> How do I get video and closed captioning at the same time? >>>> >>> >>> To my knowledge, you cannot run two userland apps streaming from the >>> frontend at the same time. Generally, when people need to do this >>> sort of thing they write a userland daemon that multiplexes. >>> Alternatively, you can cat the frontend to disk and then have both >>> mplayer and your cc parser reading the resulting file. >>> >>> >> >> Usually there is some way, for ex. command line option, >> how to say to "second" app that frondend is already locked. >> Then second app simply skips tuning at all. >> >> Rest processing is made using demux and dvr devices, >> so there is not reason why 2 apps should tune in same >> time. >> >> /Honza >> > > Thanks! I'm trying to create separate recordings of the video/audio file on > the one hand and the closed captioning on the other. > > In one console, I issue > > azap -r KOCE-HD > > In a second, I issue > > cat /dev/dvb/adapter0/dvr0 > test-cat3.mpeg > > I cannot at the same time run this in a third: > > zvbi-atsc-cc -C test-cc.txt KOCE-HD > > because of resource conflict. > > Using cat works, but how do I get closed captioning from the resulting mpeg > file? > Very dump way is simply feed zvbi with resulting test-cat3.mpeg. If this page is correct: http://www.digipedia.pl/man/doc/view/zvbi-atsc-cc.1/ using -t command line option you can get CC by issuing something like "cat test-cat3.mpeg > zvbi-atsc-cc -ts -C test-cc.txt" Of course I'm assuming that CC pid is included in recording. But dunno if azap is demuxing pids others then A/V. /Honza -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
