[gst-devel] Erroneous pipeline

[ved kpl]

Hi,

>From the logs (Warning: AVFrame.pts=? trying to guess (1)),it seemed
that the ffmpeg part needs  timestamped data and since the frames were
coming directly from filesrc (without any timestamping), it was trying
to guess and probably dropping the frames (i think!! :) ), making the
pipeline race to EOS quickly.

Inserting the identity will timestamp the frames as per the framerate.
This is usually helpful, when reading from a file or so. Not when a
live source is involved. (as live source may drop the frames, or will
not always yield the frames as per the expected fps)

~ Regards
Ved

On Wed, Apr 15, 2009 at 3:10 PM, nikhil almalkar
<nikhil.almalkar at gmail.com> wrote:
> Hi ,
>
> It worked,...
>
> Thanks alot....
>
> (btw, gst-ffmpeg : : 0.10.7 )
>
> What do you think was the reason for the pipeline not working without the
> identity element  ?
> If you can spare some time, ill be very thankful.
>
> Regards,
>
> Nikhil.
>
>
> On Wed, Apr 15, 2009 at 2:08 PM, ved kpl <ved.kpl at gmail.com> wrote:
>>
>> gst-ffmpeg version?
>>
>> try putting identity after the filesrc with datarate property set to
>> framesize * fps.
>>
>> ~ Regards
>> Ved
>>
>> On Wed, Apr 15, 2009 at 1:58 PM, nikhil almalkar
>> <nikhil.almalkar at gmail.com> wrote:
>> > The GStreamer version im using :
>> >
>> > Name       : gstreamer
>> > Arch       : i386
>> > Version    : 0.10.21
>> >
>> >
>> > On Wed, Apr 15, 2009 at 1:18 PM, ved kpl <ved.kpl at gmail.com> wrote:
>> >>
>> >> Hi,
>> >>
>> >> The same pipeline worked for me.
>> >> What version are you using?
>> >>
>> >> ~Regards
>> >> Ved
>> >>
>> >> On Tue, Apr 14, 2009 at 7:42 PM, nikhil almalkar
>> >> <nikhil.almalkar at gmail.com> wrote:
>> >> > gst-launch-0.10 filesrc
>> >> > location="/home/nikhil/project/Bitstream/foreman_part_cif.yuv"
>> >> > blocksize=152064 ! video/x-raw-yuv,format = \(fourcc\)I420, width
>> >> > =352,height=288, framerate=30/1 ! ffenc_mpeg2video ! ffdec_mpeg2video
>> >> > !
>> >> > ffmpegcolorspace ! videoscale ! ximagesink
>> >> >
>> >> >
>> >> > I am rying to execute above pipeline. The problem is only two frames
>> >> > are
>> >> > displayed. In the log there are :;;
>> >> >
>> >> >  ffmpeg :0:: Warning: AVFrame.pts=? trying to guess (1)
>> >> > .............for
>> >> > every frame.
>> >> >
>> >> >
>> >> > also...
>> >> >
>> >> > basesrc gstbasesrc.c:2185:gst_base_src_loop:<filesrc0> pausing after
>> >> > gst_base_src_get_range() = unexpected
>> >> > Got EOS from element "pipeline0".
>> >> >
>> >> >
>> >> > the help will be appreciated..
>> >> >
>> >> > I have already put up this query.. but I put it again with the
>> >> > pipeline
>> >> > here. Sorry for the inconvenience.
>> >> >
>> >> > Regards,
>> >> >
>> >> > Nikhil.
>> >> >
>> >> >
>> >> >
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