[Libav-user] Recent ffmpeg version doesn't support v4l2

Leandro Santiago leandrosansilva at gmail.com
Fri Jul 1 20:23:58 CEST 2011




Sorry for the delay (I was busy these days and couldn't answer). I
continue having problems with ffmpeg from trunk. The last which worked
with me is 0.7rc
the pastebin is in:
http://pastebin.com/rLL2jBUp

and the error, when I call av_open_input_file is:
[video4linux2 @ 0xa904180] ioctl set time per frame(7/8560628) failed

this call returns a valid value, but so I can't find any streams in
the input. With 0.7rc everything works fine.

The information about the camera:
05:08.0 Multimedia video controller: Brooktree Corporation Bt878 Video
Capture (rev 11)
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium
>TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 32 (4000ns min, 10000ns max)
        Interrupt: pin A routed to IRQ 21
        Region 0: Memory at 9000f000 (32-bit, prefetchable) [size=4K]
        Capabilities: [44] Vital Product Data
                Unknown small resource type 00, will not decode more.
        Capabilities: [4c] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Kernel driver in use: bttv
        Kernel modules: bttv



2011/6/18 Nicolas George <nicolas.george at normalesup.org>:
> Le decadi 30 prairial, an CCXIX, Alex Cohn a écrit :
>> Could this be related to the requirement to build ffmpeg as superuser?
>
> There is no requirement to build ffmpeg as superuser.
>
>> On Saturday, June 18, 2011, Leandro Santiago <leandrosansilva-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
>
> Please do not top-post on these mailing-lists.
>
> Regards,
>
> --
>  Nicolas George
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.11 (GNU/Linux)
>
> iEYEARECAAYFAk38WVgACgkQsGPZlzblTJMiqQCcDSxEbh0iw5GsenGbT/OR8ZDB
> Hw8AoLcNsQWOxMm7eExtUFBLGPiPcvk3
> =tDs+
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
>
>




More information about the Libav-user mailing list