> On Dec 1, 2014, at 2:41 PM, Thilo Borgmann <[email protected]> wrote:
>
> Am 01.12.14 um 07:39 schrieb Thilo Borgmann:
>> Hi,
>>
>>> There is no documents for the OS X desktop screen recording by ffmpeg,
>>> http://trac.ffmpeg.org/wiki/Capture/Desktop
>>> Is there have any ways for this operation?
>>
>> you're right there is nothing on that wiki page and I'm adding it to my todo
>> list. For the time being, you'll find the information you're looking for at
>> the
>> documentation page of the avfoundation input device:
>>
>> http://ffmpeg.org/ffmpeg-devices.html#avfoundation
>
> p.s. Screen capturing comes as a usual video input, so use -list_devices to
> query your screens.
>
> -Thilo
Hi Thilo,
I’ve list_devices the devices;but there have no screen option, just
only camera option;
Perhaps i have using the wrong parameters?
[StevenLiu@localhost ~]$ ffmpeg -f avfoundation -list_devices 1 -i ""
ffmpeg version N-65018-gad91bf8 Copyright (c) 2000-2014 the FFmpeg developers
built on Jul 27 2014 20:36:24 with Apple LLVM version 5.1 (clang-503.0.40)
(based on LLVM 3.4svn)
configuration: --enable-opengl --enable-libx265 --enable-libx264
--enable-libmp3lame --enable-gpl --enable-libfaac --enable-nonfree
--prefix=/usr/ --enable-libfreetype --enable-libass
libavutil 52. 92.101 / 52. 92.101
libavcodec 55. 69.100 / 55. 69.100
libavformat 55. 49.100 / 55. 49.100
libavdevice 55. 13.102 / 55. 13.102
libavfilter 4. 11.102 / 4. 11.102
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
libpostproc 52. 3.100 / 52. 3.100
[AVFoundation input device @ 0x7fb8125038a0] AVFoundation video devices:
[AVFoundation input device @ 0x7fb8125038a0] [0] FaceTime HD Camera (Built-in)
: Input/output error
[StevenLiu@localhost ~]$ ffmpeg -f avfoundation -list_devices 0 -i ""
ffmpeg version N-65018-gad91bf8 Copyright (c) 2000-2014 the FFmpeg developers
built on Jul 27 2014 20:36:24 with Apple LLVM version 5.1 (clang-503.0.40)
(based on LLVM 3.4svn)
configuration: --enable-opengl --enable-libx265 --enable-libx264
--enable-libmp3lame --enable-gpl --enable-libfaac --enable-nonfree
--prefix=/usr/ --enable-libfreetype --enable-libass
libavutil 52. 92.101 / 52. 92.101
libavcodec 55. 69.100 / 55. 69.100
libavformat 55. 49.100 / 55. 49.100
libavdevice 55. 13.102 / 55. 13.102
libavfilter 4. 11.102 / 4. 11.102
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
libpostproc 52. 3.100 / 52. 3.100
[avfoundation @ 0x7f967881f000] Selected pixel format (yuv420p) is not
supported by the input device.
[avfoundation @ 0x7f967881f000] Supported pixel formats:
[avfoundation @ 0x7f967881f000] uyvy422
[avfoundation @ 0x7f967881f000] yuyv422
[avfoundation @ 0x7f967881f000] nv12
[avfoundation @ 0x7f967881f000] 0rgb
[avfoundation @ 0x7f967881f000] bgr0
[avfoundation @ 0x7f967881f000] Overriding selected pixel format to use uyvy422
instead.
Input #0, avfoundation, from '':
Duration: N/A, start: 2.710000, bitrate: N/A
Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1280x720, 100
tbr, 100 tbn, 100 tbc
At least one output file must be specified
[StevenLiu@localhost ~]$
Thanks,
Steven
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