Re: libv4l2: error dequeuing buf: Resource temporarily unavailable

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> 
> >> Your driver load may not be quite right or got some conflicts. According
> >> to:
> >> http://www.kernel.org/doc/Documentation/video4linux/CARDLIST.saa7134,
> >> the Terratec Cinergy 400 TV should be card=8. Have you tried: restart,
> >> "modprobe -r saa7134", "modprobe saa7134 card=8", "dmesg | grep
> >> saa7134", and checked if the Terratec Cinergy 400 TV showed up
> >> correctly? If right, it should be Ok:
> >>
> >> ffmpeg -f video4linux2 -i /dev/video0 out.mpg
> >> ffmpeg -t 30 -f video4linux2 -s vga -r 30 -b 2000k -i /dev/video0
> >> out-vga-2M-30sec.mpg
> >> ffmpeg -t 60 -f video4linux2 -s vga -r 30 -b 2000k -i /dev/video0
> >> out-vga-2M-60sec.avi
> >> ..., etc.
> >
> > Thanks a lot for your help. The card is loaded OK. I tried it with the
> > card=8 parameter in a newly created file /etc/modprobe.d/saa7134.conf.
> >
> > It seems to be loaded properly:
> >
> > dmesg | grep saa7134
> > [   24.978050] saa7134[0]: found at 0000:04:01.0, rev: 1, irq: 17,
> > latency: 32, mmio: 0xfe500000
> > [   24.978058] saa7134[0]: subsystem: 153b:1142, board: Terratec Cinergy
> > 400 TV [card=8,insmod option]
> > [   24.978073] saa7134[0]: board init: gpio is 50000
> > [   25.053979] input: saa7134 IR (Terratec Cinergy 40
> > as
> > /devices/pci0000:00/0000:00:1c.4/0000:03:00.0/0000:04:01.0/rc/rc0/input6
> > [   25.054018] rc0: saa7134 IR (Terratec Cinergy 40
> > as /devices/pci0000:00/0000:00:1c.4/0000:03:00.0/0000:04:01.0/rc/rc0
> > [   25.187509] saa7134[0]: i2c eeprom 00: 3b 15 42 11 ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187517] saa7134[0]: i2c eeprom 10: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187523] saa7134[0]: i2c eeprom 20: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187529] saa7134[0]: i2c eeprom 30: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187535] saa7134[0]: i2c eeprom 40: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187541] saa7134[0]: i2c eeprom 50: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187547] saa7134[0]: i2c eeprom 60: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187553] saa7134[0]: i2c eeprom 70: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187559] saa7134[0]: i2c eeprom 80: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187566] saa7134[0]: i2c eeprom 90: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187571] saa7134[0]: i2c eeprom a0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187577] saa7134[0]: i2c eeprom b0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187583] saa7134[0]: i2c eeprom c0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187589] saa7134[0]: i2c eeprom d0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187595] saa7134[0]: i2c eeprom e0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.187601] saa7134[0]: i2c eeprom f0: ff ff ff ff ff ff ff ff ff ff
> > ff ff ff ff ff ff
> > [   25.716134] saa7134[0]: registered device video0 [v4l2]
> > [   25.716157] saa7134[0]: registered device vbi0
> > [   25.998624] saa7134 ALSA driver for DMA sound loaded
> > [   25.998650] saa7134[0]/alsa: saa7134[0] at 0xfe500000 irq 17
> > registered as card -1
> >
> >
> > ffmpeg -f video4linux2 -i /dev/video0 test.mpg
> >
> > gives still the error mentioned in the subject,
> >
> > ffmpeg -t 30 -f video4linux2 -s vga -r 30 -b 2000k -i /dev/video0
> > out-vga-2M-30sec.mpg
> >
> > gives an I/O error while setting the framerate
> >
> > ffmpeg version 0.10.4 Copyright (c) 2000-2012 the FFmpeg developers
> >   built on Jun 13 2012 09:51:06 with gcc 4.7.0 20120507 (Red Hat
> > 4.7.0-5)
> >   configuration: --prefix=/usr --bindir=/usr/bin
> > --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
> > --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
> > --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
> > -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic'
> > --enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass
> > --enable-libcdio --enable-libcelt --enable-libdc1394
> > --disable-indev=jack --enable-libfreetype --enable-libgsm
> > --enable-libmp3lame --enable-openal --enable-libopenjpeg
> > --enable-libpulse --enable-librtmp --enable-libschroedinger
> > --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
> > --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
> > --enable-avfilter --enable-postproc --enable-pthreads --disable-static
> > --enable-shared --enable-gpl --disable-debug --disable-stripping
> > --shlibdir=/usr/lib64 --enable-runtime-cpudetect
> >   libavutil      51. 35.100 / 51. 35.100
> >   libavcodec     53. 61.100 / 53. 61.100
> >   libavformat    53. 32.100 / 53. 32.100
> >   libavdevice    53.  4.100 / 53.  4.100
> >   libavfilter     2. 61.100 /  2. 61.100
> >   libswscale      2.  1.100 /  2.  1.100
> >   libswresample   0.  6.100 /  0.  6.100
> >   libpostproc    52.  0.100 / 52.  0.100
> > Please use -b:a or -b:v, -b is ambiguous
> > [video4linux2,v4l2 @ 0x9bd440] ioctl set time per frame(1/30) failed
> > /dev/video0: Input/output error
> >
> > While we have PAL here I tried
> >
> > ffmpeg -t 30 -f video4linux2 -s vga -r 25 -b 2000k -i /dev/video0
> > out-vga-2M-30sec.mpg
> >
>"ffmpeg -t 30 -f video4linux2 -s vga -r 25 -b 2000k -i /dev/video0
> out-vga-2M-30sec.mpg" works, right? If PAL, you may add "-tvstd pal"
> option.

Sorry, I didn't finish my last sentence. No, it does not work. Even if I
choose the framerate for PAL, I get the error.

To summarize my results:

* The SAA7134 is recognized by the kernel (right?).
* The right module is properly loaded (right?).
* The card parameter is card=8 (right?).
* tvtime, mplayer, mencoder, and xawtv work with the card
* ffmpeg does not, showing the error in the subject.



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