[LAU] screencasting with ffmpeg

Jeremy Jongepier jeremy at autostatic.com
Fri Nov 5 19:15:41 UTC 2010


On 11/05/2010 06:50 PM, Rustom Mody wrote:
>>> That is because you're trying to capture a 1280x720 screensize with
>>> ffmpeg while the Xephyr screensize is 1024x768.
>>
>> Ok matched the resolutions.
>> The segmentation fault remains but all the other X error stuff has gone
>>
>
> Well the seg fault has gone but now I am getting
>
> [x11grab @ 0x9bb2c30] device: :2 ->  display: :2 x: 0 y: 0 width: 1024
> height: 768
> [x11grab @ 0x9bb2c30] shared memory extension  found
> [x11grab @ 0x9bb2c30] All info found
> [x11grab @ 0x9bb2c30] Estimating duration from bitrate, this may be inaccurate
> Input #0, x11grab, from ':2':
>    Duration: N/A, start: 1288979305.393176, bitrate: 754974 kb/s
>      Stream #0.0, 1, 1/1000000: Video: rawvideo, bgra, 1024x768, 1/30,
> 754974 kb/s, 30 tbr, 1000k tbn, 30 tbc
> /home/siva/screencast/screencast_video_20101105-23h18.mkv: No such
> file or directory
>
>
> Tried sticking in a -t in at different points in the command line to no effect

The script assumes there is a directory Screencasts in your home 
directory. If you don't have it then create it first.

Best,

Jeremy


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