[gst-devel] Gstreamer transcoding Flash FLV in 0.10

[Coffman, S. <ge...@um...>]

Hi,
I'm trying to convert a script that uses ffmpeg to one using Gstreamer
for transcoding to Flash (VP6 codec FLV format) from pretty much any
source format.

Currently I do this:
 1. ffmpeg -i movie.[avi] -s 320x240 -ar 44100 -r 12 movie.flv
 2. cat movie.flv | flvtool2 -U stdin movie.flv=20

(s =3D size, ar=3D sample rate, r=3Dframe rate, and flvtool2 =3D adds =
the video
duration into the FLV's metadata)

ffenc_flv doesn't seem to offer arguments that are direct equivalents of
size, sample rate, and frame rate, and I can't find the arguments list
for ffmux_flv.=20

I don't know if it's helpful, but I do have a Gstreamer pipeline that
transcodes to OGG without specifying the resulting size:

gst-launch-0.10  oggmux name=3D"mux" ! filesink location=3D"output.ogg"  =
\
       filesrc location=3D"input.ext" ! decodebin name=3D"d" \
           { d. ! queue ! ffmpegcolorspace ! theoraenc ! queue ! mux. }
\
           { d. ! queue ! audioconvert ! audioresample ! vorbisenc !
queue ! mux. }



However, this doesn't seem to translate directly for some reason:

gst-launch-0.10 ffmux_flv name =3D"mux" ! filesink =
location=3D"output.flv" \
filesrc location=3D"input.ext" ! decodebin name=3D"d" \
           { d. ! queue ! ffmpegcolorspace ! ffenc_flv ! queue ! mux. }
\
           { d. ! queue ! audioconvert ! audioresample ! ffenc_flv !
queue ! mux. }


Has anyone done something similar in the past?
-Steve