Hello everybody,
I got no answer one week ago, but I'm sure some of you have done
something similar. ;-)
I need help with a transcoding pipeline video->flash. Only audio or
video transcoding is simple but video with audio does not work for me.
I have written the code in C but for better understanding I post the
command-line version here:
filesrc location=input.mpg \
! decodebin2 name=decode \
decode. \
! queue \
! videoscale \
! capsfilter caps='video/x-raw-yuv,width=160,height=128' \
! ffmpegcolorspace \
! ffenc_flv \
! flvmux name=mux \
decode. \
! queue \
! audioconvert \
! audioresample \
! lame \
! mux.
mux. \
! filesink location=out.flv \
Transcoding without audio works well, but with audio I get an empty
file, so I assume that there are some elements/pads not linked,
although the debug-messages say nothing about that linking has failed.
The GST_DEBUG=3 log is in the previous mail:
http://article.gmane.org/gmane.comp.video.gstreamer.devel/27366In the C code
- I link all elements with static pads
- then request pads on the muxer
- and link the two encoders to the muxer
- Linking the decodebin to the both queues is done in the callback of
the decodebin.
- All elements are in the main pipeline - do I have to make sub-bins?
The used input file is a PAL MPEG2 video, MPEG1 L2 48kHz audio, 25fps
I'm on ubuntu 9.10 with the ubuntu packages (0.10.25-2).
thanks
lukas
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