[FFmpeg-user] libdc1394 troubles

[Bryan Goldstein]

Okay, it worked when I manually set the fps inside of <libavdevice/libdc1394.c>
to the right framerate object. What I don't get is why it didn't just work
to use `-r 7500`, anyone know what I'm doing wrong?

Thanks,
Bryan


On Mon, Dec 3, 2012 at 12:33 PM, Bryan Goldstein <brysgo at gmail.com> wrote:

> If it helps, the error is being thrown in libavdevice/libdc1394.c when a
> sanity check is reached and the fps->framerate appears to be zero (which
> I'm guessing it shouldn't be).
>
> - Bryan
>
>
> On Sun, Dec 2, 2012 at 11:13 AM, Bryan Goldstein <brysgo at gmail.com> wrote:
>
>> Hi Lou,
>>
>> Here it is uncut:
>> ---
>> omap3-multi:~$ sudo ffmpeg -loglevel debug -v verbose -f libdc1394 -i
>> hw:0,0 -vcodec mpeg4 -b:v 10000k -bufsize 150000k -r 640x480
>> http://127.0.0.1:8090/feed1.ffm
>> Password:
>> ffmpeg version N-47291-g0b14c19 Copyright (c) 2000-2012 the FFmpeg
>> developers
>>   built on Nov 30 2012 01:11:28 with gcc 4.5.3 (GCC) 20110311 (prerelease)
>>   configuration: --enable-libdc1394
>>   libavutil      52.  9.102 / 52.  9.102
>>   libavcodec     54. 77.100 / 54. 77.100
>>   libavformat    54. 40.100 / 54. 40.100
>>   libavdevice    54.  3.100 / 54.  3.100
>>   libavfilter     3. 23.104 /  3. 23.104
>>   libswscale      2.  1.103 /  2.  1.103
>>   libswresample   0. 17.101 /  0. 17.101
>> [libdc1394 @ 0x1cdc520] Can't find matching camera format for uyvy422,
>> 320x240 at 29970:1000fps
>> hw:0,0: Operation not permitted
>> ---
>> However, I can still get the same output by just doing `ffmpeg -f
>> libdc1394 -i hw:0,0`
>>
>> Thanks,
>> Bryan
>>
>>
>> On Fri, Nov 30, 2012 at 7:41 PM, Lou <lou at lrcd.com> wrote:
>>
>>> On Fri, 30 Nov 2012 16:03:31 -0500
>>> Bryan Goldstein <brysgo at gmail.com> wrote:
>>>
>>> > Hello,
>>> >
>>> > I am new to ffmpeg and I am having some trouble using my libdc1394
>>> > supported webcam with it. I keep getting the same error:
>>> > ----
>>> > [libdc1394 @ 0x1722520] Can't find matching camera format for uyvy422,
>>> > 320x240 at 29970:1000fps
>>> > hw:0,0: Operation not permitted
>>> > ----
>>> >
>>> > Here is some build info:
>>> >
>>> > ffmpeg version N-47291-g0b14c19 Copyright (c) 2000-2012 the FFmpeg
>>> > developers
>>> >   built on Nov 30 2012 01:11:28 with gcc 4.5.3 (GCC) 20110311
>>> (prerelease)
>>> >   configuration: --enable-libdc1394
>>> >   libavutil      52.  9.102 / 52.  9.102
>>> >   libavcodec     54. 77.100 / 54. 77.100
>>> >   libavformat    54. 40.100 / 54. 40.100
>>> >   libavdevice    54.  3.100 / 54.  3.100
>>> >   libavfilter     3. 23.104 /  3. 23.104
>>> >   libswscale      2.  1.103 /  2.  1.103
>>> >   libswresample   0. 17.101 /  0. 17.101
>>> >
>>> > libdc1394 version is 2.2.0
>>> >
>>> > Camera is Chameleon CMLN-13S2C
>>> >
>>> > Does anyone have any idea as to what I could be doing wrong?
>>> >
>>> > Thanks,
>>> > Bryan
>>>
>>> Please provide the complete ffmpeg command line and the complete, uncut
>>> console output.
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>>
>>
>