Bug#693554: libav-tools: avconv X11 grabbing example from the man doesn't work

[Reinhard Tartler]

Control: tag -1 moreinfo upstream

Sorry for not replying earlier.

On Sat, Nov 17, 2012 at 3:23 PM, Lorenzo Sutton
<lorenzofsutton at gmail.com> wrote:
> Package: libav-tools
> Version: 6:0.8.4-1
> Severity: normal
>
> Dear Maintainer,
>
> Running:
>
> avconv -f x11grab -s cif -r 25 -i :0.0 out.mpg
>
> which is exactly the same as the manual entry example under "X11 grabbing"
> (but for the output file)
>
> generates a 0 bytes file and the following output:
>
> avconv: Symbol `av_pix_fmt_descriptors' has different size in shared object, consider re-linking
> avconv version 0.8.4-6:0.8.4-1, Copyright (c) 2000-2012 the Libav developers
>   built on Oct 23 2012 07:29:48 with gcc 4.7.2
> [x11grab @ 0x8b953e0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 352 height: 288
> [x11grab @ 0x8b953e0] shared memory extension found
> [x11grab @ 0x8b953e0] Estimating duration from bitrate, this may be inaccurate
> Input #0, x11grab, from ':0.0':
>   Duration: N/A, start: 1353183611.469278, bitrate: 81100 kb/s
>     Stream #0:0: Video: rawvideo (BGRA / 0x41524742), bgra, 352x288, 81100 kb/s, 25 tbr, 1000k tbn, 25 tbc
> File 'out.mpg' already exists. Overwrite ? [y/N] y
> Incompatible pixel format 'bgra' for codec 'mpeg1video', auto-selecting format 'yuv420p'
> [buffer @ 0x8ba77a0] w:352 h:288 pixfmt:bgra tb:1/1000000 sar:0/1 sws_param:
> [avsink @ 0x8b930e0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
> [scale @ 0x8b93520] w:352 h:288 fmt:bgra sar:0/1 -> w:352 h:288 fmt:yuv420p sar:0/1 flags:0x4
> [mpeg @ 0x8b8f800] VBV buffer size not set, muxing may fail
> Output #0, mpeg, to 'out.mpg':
>   Metadata:
>     encoder         : Lavf53.32.100
>     Stream #0:0: Video: mpeg1video, yuv420p, 352x288, q=2-31, 200 kb/s, 90k tbn, 25 tbc
> Stream mapping:
>   Stream #0:0 -> #0:0 (rawvideo -> mpeg1video)
> Press ctrl-c to stop encoding
> [buffer @ 0x8ba77a0] Changing frame properties on the fly is not supported.
>     Last message repeated 31 times
> Changing frame properties on the fly is not supported.0000.00 bitrate=   0.0kbits/s
>
> Last 3 lines is repeated continuously, with only the number for "repeated #
> times" changed.

Do you still experience this problem? I just tried it on my laptop
(with libav 9.13, actually), and it works for me just fine.