Re: [Motion-user] Move avi encoding to separate thread (or external process)

[tosiara <to...@gm...>]

Performance reasons. I use dual core ARM stick and only motion detection
itself uses 40-80 %%. When it comes to mpeg4 encoding cpu usage is 100% and
i get only 2-3fps of video (720p). Capturing directly from camera gives me
8-10 fps using mencoder.

That's why I want to offload encoding to another thread or process, the
second cpu core does nothing and remains 0%.

Actually I'm using 3.2.12 version and not sure if it contains the patch for
external pipe. Will try to build current trunk and see if I manage to pipe
video
On Dec 26, 2013 9:28 PM, "Mike Wilson" <kno...@gm...> wrote:

> I'm curious about what is so bad about letting motion write the avi. Is it
> just offloading the encoding to a different thread for performance reasons?
>
> On Dec 26, 2013, at 2:08 PM, tosiara <to...@gm...> wrote:
>
> I have tried mjpg_streamer to feed both motion and ffmpeg (motion triggers
> script which writes avi). Works fine, but not very stable and harder to
> maintain. With 720p there are sometimes noticeable picture corruptions
> which generates false motion detection.
>
> Has anyone tried this one?
> http://www.lavrsen.dk/foswiki/bin/view/Motion/DarkwindHackeronMotionPatching
>
> It looks exactly what I need, but has status PatchInProgress dated 2008...
>
>
> On Thu, Dec 26, 2013 at 1:31 PM, Heiko Finzel <hei...@go...>wrote:
>
>> Hi , yes . my setup consists of 2 webcams one for motion detection and
>> one for capturing . I use the event scripts to trigger recording and the
>> results are realy way better then with motion itself even though it uses
>> the same technology .
>> You could do the same thing with a single camera , if you get the
>> loopback device to work , which I was not able to ...
>>
>> Am 26.12.2013 12:13 schrieb tosiara <to...@gm...>:
>> >
>> > Hi,
>> >
>> > I wonder is it possible to move avi file encoding to another thread?
>> Has anyone (if ever) spent any efforts on investigating possibility to move
>> video encoding to an external encoder (piping to another process) or
>> separate thread?
>> >
>> > Please someone point me to the right direction on this question
>> >
>> > Thanks,
>> > Zydrunas
>>
>
>
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