[FFmpeg-user] Recording logitech ultra vison,

[Sw@g]

Right, tried to play the file on window with VLC and the file isn't 
readable so I don't know what to do now....

On 06/07/2011 07:27 PM, Sw at g wrote:
> well it did, now the command ffmpeg -f video4linux2 -i /dev/video0 
> -pix_fmt yuv420p -s 800x600 -vcodec libx264 -preset medium -profile 
> high -crf 18 -r 15 -t 20 cam_`date +%F_%T`.avi
>
> works, but I cannot open it, I suspect is because x264-git isn't link 
> and gnome-mplayer doesn't see the codec.
>
> regards,
>
> On 06/07/2011 07:24 PM, Lou wrote:
>> On Tue, 07 Jun 2011 19:07:10 +0100
>> "Sw at g"<sweetthdevil at gmail.com>  wrote:
>>
>>> Right,
>>>
>>> me again, installing ffmpeg-git from aur didn't change any outcome, I
>> What outcome? You didn't show your command and the complete output.
>>
>>> am now recompiling the latest git with  ./configure --enable-gpl
>>> --enable-libx264 --enable-x11g is there any other option I should add?
>> ffmpeg-git and ffmpeg from the repository already use these options.
>> Re-compiling probably won't help you.
>>
>>> regards,
>>>
>>> On 06/07/2011 06:50 PM, Sw at g wrote:
>>>> Many thanks for your replies,
>>>>
>>>> I am now installing x264 and ffmpeg from aur, will let you know the
>>>> outcome
>>>>
>>>>
>>>> On 06/07/2011 06:39 PM, Etienne Buira wrote:
>>>>> On Tue, Jun 07, 2011 at 06:18:50PM +0100, Sw at g wrote:
>>>>>> Right,
>>>>>>
>>>>>> so I have compile the latest git to try resolving the issue and
>>>>>> now nothing work, for example the command I was using to record
>>>>>> my desktop return the following errors:
>>>>>>
>>>>>> [sweetth at myhost test]$ ffmpeg -s 2720x1024 -r 25 -f x11grab
>>>>>> -i :0.0 -acodec libmp3lame -ab 128k -vcodec mpeg4 -sameq -y -t 60
>>>>>> /media/z/.cam/screen/screen_`date +%F_%T`.avi
>>>>>> ffmpeg version git-N-30610-g1929807, Copyright (c) 2000-2011 the
>>>>>> FFmpeg developers
>>>>>>      built on Jun  7 2011 18:01:52 with gcc 4.6.0 20110513
>>>>>> (prerelease) configuration:
>>>>>>      libavutil    51.  6. 1 / 51.  6. 1
>>>>>>      libavcodec   53.  6. 1 / 53.  6. 1
>>>>>>      libavformat  53.  2. 0 / 53.  2. 0
>>>>>>      libavdevice  53.  1. 1 / 53.  1. 1
>>>>>>      libavfilter   2. 14. 0 /  2. 14. 0
>>>>>>      libswscale    0. 14. 1 /  0. 14. 1
>>>>>> Unknown input format: 'x11grab'
>>>>> You need to give --enable-gpl --enable-x11grab to configure script.
>>>>>
>>>>>> and while trying to capture the webcam using the mpeg4 codec or
>>>>>> the libx264 then the terminal just hang:
>>>>>>
>>>>>> [sweetth at myhost test]$ ffmpeg -f video4linux2 -i /dev/video0 -b
>>>>>> 64m -crf
>>>>>> 22 -s 640x480 -vcodec mpeg4 -t 20  cam_`date +%F_%T`.mp4
>>>>>> ffmpeg version git-N-30610-g1929807, Copyright (c) 2000-2011 the
>>>>>> FFmpeg developers
>>>>>>      built on Jun  7 2011 18:01:52 with gcc 4.6.0 20110513
>>>>>> (prerelease) configuration:
>>>>>>      libavutil    51.  6. 1 / 51.  6. 1
>>>>>>      libavcodec   53.  6. 1 / 53.  6. 1
>>>>>>      libavformat  53.  2. 0 / 53.  2. 0
>>>>>>      libavdevice  53.  1. 1 / 53.  1. 1
>>>>>>      libavfilter   2. 14. 0 /  2. 14. 0
>>>>>>      libswscale    0. 14. 1 /  0. 14. 1
>>>>>> [video4linux2 @ 0xa75c360] The driver changed the time per frame
>>>>>> from 1228/32 to 1/5
>>>>> For that I don't know.
>>>>>
>>>>>> [sweetth at myhost test]$ ffmpeg -f video4linux2 -i /dev/video0
>>>>>> -pix_fmt yuv420p -s 800x600 -vcodec libx264 --preset medium -crf
>>>>>> 18 -r 15 -t 20 cam_`date +%F_%T`.mp4
>>>>>> ffmpeg version git-N-30610-g1929807, Copyright (c) 2000-2011 the
>>>>>> FFmpeg developers
>>>>>>      built on Jun  7 2011 18:01:52 with gcc 4.6.0 20110513
>>>>>> (prerelease) configuration:
>>>>>>      libavutil    51.  6. 1 / 51.  6. 1
>>>>>>      libavcodec   53.  6. 1 / 53.  6. 1
>>>>>>      libavformat  53.  2. 0 / 53.  2. 0
>>>>>>      libavdevice  53.  1. 1 / 53.  1. 1
>>>>>>      libavfilter   2. 14. 0 /  2. 14. 0
>>>>>>      libswscale    0. 14. 1 /  0. 14. 1
>>>>>> [video4linux2 @ 0x9287360] The driver changed the time per frame
>>>>>> from 1228/32 to 1/5
>>>>>>
>>>>>>
>>>>>> Any help would be appreciated,
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 06/07/2011 04:52 PM, Paul Gardiner wrote:
>>>>>>> On 07/06/2011 16:35, Sw at g wrote:
>>>>>>>> Hi again,
>>>>>>>>
>>>>>>>> Well with " " or ` ` it doesn't work "Unrecognized option
>>>>>>>> 'preset medium'" only the -vpre works.
>>>>>>> -vpre is a completely different thing. You definitely need
>>>>>>> -preset. If that's not accepted, then it has to be that you have
>>>>>>> a version of ffmpeg that is too old.
>>>>>>>
>>>>>>> -vpre is just a way to provoke long lists of ffmpeg paramaters
>>>>>>> stored in a preset file. It is -preset that communicates to
>>>>>>> libx264. There's never been a time when -vpre did what -preset
>>>>>>> does now, so it will not help to try using it.
>>>>> vpre was just a way to do the same thing as preset does now.
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