[FFmpeg-devel] Developer needed for applying watermark onto video on server

[chuck]

Hi, I am looking for a developer for hire to help us with an issue 
applying a watermark to videos after they are uploaded and converted on 
the server. I am the project manager and do not have much technical 
information but you will be able to speak with our coders directly. Our 
deadline is roughly 10 days. Please respond with an approximate cost 
for this project.


Thanks,

Chuck P.
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[FFmpeg-devel] Codec Routing

[Chuck Burfoot]

I have been investigating the ways and means of the 'routing' of FFMPEG
internally. I've built from source binaries with Windows and C99to89.

I build with --enable-libvpx. I was keenly interested in the ability of
libvpx to create/encode "webm" with alpha.

( output from ffprobe 

ffprobe version 2.3.git Copyright (c) 2007-2014 the FFmpeg developers

  built on Aug 21 2014 09:14:40 with Microsoft (R) 32-bit C/C++ Optimizing
Compi

ler Version 16.00.40219.01 for 80x86

  configuration: --toolchain=msvc --enable-shared --enable-libvpx
--enable-libvo

rbis --disable-pthreads

  libavutil  54.  5.100 / 54.  5.100

  libavcodec 56.  0.101 / 56.  0.101

  libavformat56.  1.100 / 56.  1.100

  libavdevice56.  0.100 / 56.  0.100

  libavfilter 5.  0.100 /  5.  0.100

  libswscale  3.  0.100 /  3.  0.100

  libswresample   1.  1.100 /  1.  1.100

)

 

Hey, it built and it 'seemed'  to work. So I started digging in and then
discovered that it doesn't decode alpha yet. HA, that was a surprise.

 

So I started examining the "FFmpeg codec HOWTO"
(http://wiki.multimedia.cx/index.php?title=FFmpeg_codec_HOWTO) and
instrumented some 

printf instructions into libvpxdec.c in vpx_init() and vp8_decode().

 

These don't ever appear, so I also tried to do a fopen("abc.txt") and that
doesn't get created. So WHAT routes the linkage to 

Where?

 

So I dumped --codecs and low and behold

DEV.L. vp8  On2 VP8 (decoders: vp8 libvpx ) (encoders:
libvpx )

DEV.L. vp9  Google VP9 (decoders: vp9 libvpx-vp9 )
(encoders: libvpx-vp9 )

 

There's 2 DECODERS for vp8 and vp8 and the 'internal' one is used first !

Isn't that a build bug?

 

Do I need to do a --disable-vp8, etc?

 

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