Zms/videostream improvements

[Sune1337]

Support streaming with zms (using ffmpeg) better …

* ZoneMinder compiles with ffmpeg 0.5..master
* Make VideoStream class able to stream through ffmpeg better.
* Ability to use fixed quality instead of fixed bitrate (by specifying bitrate 0...100)
* Format url parameter supports <format>/<encoder> syntax

See commit message for details.

[knight-of-ni]

Sometimes learning the hard way is a good way to learn. I've made many github mistakes and have learned from it. honestly, I have learned to really like github.
As far as I know the only way to resolve the issue is to either close that open pull request or merge it... but I think we are going to hold that off until after 1.28.0 is released

[Sune1337]

the commit messages for easy reviwing:

6e77632

• use AV_CODEC_ID_MPEG4 instead of CODEC_ID_MPEG4

4b47336

• fix compilation issues with libav: … Sune1337 authored an hour ago
• use AV_CODEC_ID_MPEG4 instead of CODEC_ID_MPEG4
• added missing #include <libavutil/opt.h>
• fixed with "LIBAVFORMAT_VERSION_MICRO >= 100": libav does not support avformat_alloc_output_context2. libav does not support avcodec_get_name.

df4a9f2

• bugfix; coredump if no codec name was specified in url.

0555068

• compile with ffmpeg <= 0.8

[knight-of-ni]

@connortechnology is building it now. Sounds like it worked. He is just going to merge the changes directly into master.

[Sune1337]

sounds great

[Sune1337]

I checked out the commits; the commit "bugfix; coredump if no codec name was specified in url. " is missing from the master branch. Its not really related to compilation issues; just a bugfix i sneaked in there :) just wanted to point it out.

[connortechnology]

I've got it now. Now sure how I missed it. Thanks for your efforts on these.

[knight-of-ni]

Just confirmed that master (still) builds fine on Fedora & CentOS using ffmpeg. Also built Fedora with the NO_FFMPEG flag. We are green.

[Sune1337]

i wish i had champagne