Thanks for your reply.
>>>>> Florent <
[hidden email]> writes:
> Hi
>> Now, videorate plugin only supports "video/x-raw-yuv" and
>> "video/x-raw-rgb", can it support "image/jpeg" (mjpeg)?
>>
>> if it can support, how to modify the videorate source code to
>> support it?
> You might want to use it after the decoder. I didn't manage to do
> so myself though (got some "Got segment but doesn't have
> GST_FORMAT_TIME value" errors -- even with source that has a
> do-timestamp=true property)...
I use a camera that support "image/jpeg"(mjpeg), I use follow pipeline
to record video to avi files. this pipeline directly save jpeg encoded
frame to avi file.
gst-launch v4l2src queue-size=2 ! \
image/jpeg,width=640,height=480 ! tee name=vsrc vsrc. ! queue \
! jpegdec ! ffmpegcolorspace ! timeoverlay ! gconfvideosink \
vsrc. ! videorate ! queue ! muxer. avimux name=muxer ! filesink \
location=x.avi alsasrc ! \
'audio/x-raw-int,rate=8000,channels=1,width=8,signed=false' ! \
queue ! muxer.
I modify videorate make it support "image/jpeg", it works. at least,
uitil now, no problem found. following is the patch:
--- gst-plugins-base-0.10.19/gst/videorate/gstvideorate.c 2007-08-10 18:08:05.000000000 +0800
+++ gst-plugins-base-0.10.19.new/gst/videorate/gstvideorate.c 2008-06-12 14:06:40.000000000 +0800
@@ -120,14 +120,14 @@
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb")
+ GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb; image/jpeg")
);
static GstStaticPadTemplate gst_video_rate_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb")
+ GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb; image/jpeg")
);
static void gst_video_rate_swap_prev (GstVideoRate * videorate,
> For instance, the following pipeline doesn't work: gst-launch-0.10
> -vvv gnomevfssrc location=
http://192.168.40.137/image > do-timestamp=true ! jpegdec ! capsfilter caps = "video/x-raw-yuv,
> format=(fourcc)I420, width=(int)640, height=(int)480,
> framerate=(fraction)25/1" ! videorate ! xvimagesink
> (with or without the capsfilter)
> Flo
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