[gst-devel] v4l2src and RTSP streaming

[Andoni Morales]

El día 18 de junio de 2010 07:45, José Luis Segura Lucas
<josel.segura at gmx.es> escribió:
> 2010/6/18 Andoni Morales <ylatuya at gmail.com>
>>
>> That's true, but it only supports a set of width/height combinations,
>> so you will need a videoscale element before the encoder. Do
>> 'gst-inspect ffenc_h263' to check the accepted combinations.
>>
>> Cheers,
>> Andoni
>
> First of all, thanks Anthony for your quick answer :)
> When I run gst-inspect-0.10 ffenc_h263 I get the following (summarized):
> $ gst-inspect-0.10 ffenc_h263
> ...
> ...
> Pad Templates:
>   SINK template: 'sink'
>     Availability: Always
>     Capabilities:
>       video/x-raw-rgb
>       video/x-raw-yuv
>       video/x-raw-gray
>   SRC template: 'src'
>     Availability: Always
>     Capabilities:
>       video/x-h263
>                   width: 352
>                  height: 288

As you see (and as I told you in the first reply) width and height are
not a range and you need a videoscale before the encoder. Your
pipeline should look like:
$ gst-launch-0.10 v4l2src device=/dev/video1 ! ffmpegcolorspace !
video/x-raw-yuv,width=320,height=240 ! videoscale ! ffenc_h263 !
fakesink

Andoni

>               framerate: [ 0/1, 2147483647/1 ]
>                 variant: itu
>             h263version: h263
>       video/x-h263
> ......
> ...... (and so on).


> I tried with ffenc_h263p and, surprisingly, it worked! But with h263p
> encoder I get another problem: when I play the RTSP with Gstreamer or VLC y
> get a codec error message.
> I was successful using theora codec, and I will try with another codecs like
> x264 or MPEG.
> Can anybody give me a pipeline definition that connects a v4l2src with
> ffenc_h263 in some way (I know, using ffcolorspace, videoscale or another
> elements...). I tried to read some documentation bout de ffenc_h263, but the
> only one I can found was the gst-inspect output... :(
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
> lucky parental unit.  See the prize list and enter to win:
> http://p.sf.net/sfu/thinkgeek-promo
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>



-- 
Andoni Morales Alastruey

LongoMatch:The Digital Coach
http://www.longomatch.ylatuya.es