How to install OpenH264 on Ubuntu 16.04

Install the openh264 package in the sytem using the apt-get command and press enter.

root@linuxhelp1:~# apt-get install openh264
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
gcc-5-base:i386 libstdc++6:i386
Use ' sudo apt autoremove'  to remove them.
The following additional packages will be installed:
libopenh264-3
The following NEW packages will be installed:
libopenh264-3 openh264
0 upgraded, 2 newly installed, 0 to remove and 452 not upgraded.
Need to get 358 kB of archives.
After this operation, 1,079 kB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 http://ppa.launchpad.net/djcj/hybrid/ubuntu xenial/main amd64 libopenh264-3 amd64 1.6.0-0ppa1~xenial2 [337 kB]
Get:2 http://ppa.launchpad.net/djcj/hybrid/ubuntu xenial/main amd64 openh264 amd64 1.6.0-0ppa1~xenial2 [21.0 kB]
Fetched 358 kB in 6s (59.1 kB/s)
Selecting previously unselected package libopenh264-3.
(Reading database ... 176918 files and directories currently installed.)
Preparing to unpack .../libopenh264-3_1.6.0-0ppa1~xenial2_amd64.deb ...
Unpacking libopenh264-3 (1.6.0-0ppa1~xenial2) ...
Selecting previously unselected package openh264.
Preparing to unpack .../openh264_1.6.0-0ppa1~xenial2_amd64.deb ...
Unpacking openh264 (1.6.0-0ppa1~xenial2) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libopenh264-3 (1.6.0-0ppa1~xenial2) ...
Setting up openh264 (1.6.0-0ppa1~xenial2) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...

For using the package, enter the openh264enc command and run the command as follows. It shows the options about encoding.

root@linuxhelp1:~# openh264enc
Wels SVC Encoder Usage:
Syntax: openh264enc -h
openh264enc welsenc.cfg [options]
Supported Options:
-bfBit Stream File
-orgOriginal file, example: -org src.yuv
-swthe source width
-sh the source height
-utypeusage type
-savcsimulcast avc
-frmsNumber of total frames to be encoded
-frininput frame rate
-numtlTemporal layer number (default: 1)
-iperIntra period (default: -1) : must be a power of 2 of GOP size (or -1)
-nalsizethe Maximum NAL size. which should be larger than the each layer slicesize when slice mode equals to SM_SIZELIMITED_SLICE
-spsidEnable id adding in SPS/PPS per IDR
-cabacEntropy coding mode(0:cavlc 1:cabac
-denoisControl denoising(default: 0)
-sceneControl scene change detection (default: 0)
-bgdControl background detection (default: 0)
-aqControl adaptive quantization (default: 0)
-ltrControl long term reference (default: 0)
-ltrnumControl the number of long term reference((1-4):screen LTR,(1-2):video LTR
-threadIdc0: auto(dynamic imp. internal encoder)  1: multiple threads imp. disabled  >  1: count number of threads
-loadbalancing0: turn off loadbalancing between slices when multi-threading available  1: (default value) turn on loadbalancing between slices when multi-threading available
-deblockIdcLoop filter idc (0: on, 1: off,
-alphaOffset AlphaOffset(-6..+6): valid range
-betaOffsetBetaOffset (-6..+6): valid range
-rcrate control mode: 0-quality mode  1-bitrate mode  2-bitrate limited mode  -1-rc off
-tarbOverall target bitrate
-maxbrTotalOverall max bitrate
-maxqpMaximum Qp
-minqpMinimum Qp
-numlNumber Of Layers: Must exist with layer_cfg file and the number of input layer_cfg file must equal to the value set by this command
The options below are layer-based: (need to be set with layer id)
-lconfig(Layer) (spatial layer configure file)
-drec(Layer) (reconstruction file) example: -drec 0 rec.yuv.Setting the reconstruction file, this will only functioning when dumping reconstruction is enabled
-dw(Layer) (output width)
-dh(Layer) (output height)
-frout(Layer) (output frame rate)
-lqp(Layer) (base quality layer qp : must work with -ldeltaqp or -lqparr)
-ltarb(Layer) (spatial layer target bitrate)
-lmaxb(Layer) (spatial layer max bitrate)
-slcmd(Layer) (spatial layer slice mode): pls refer to layerX.cfg for details ( -slcnum: set target slice num  -slcsize: set target slice size constraint   -slcmbnum: set the first slice mb num under some slice modes)
-trace(Level)

To know about the options relating to decoding, run the following command.

root@linuxhelp1:~# openh264dec
Syntax: openh264dec welsdec.cfg
openh264dec welsdec.264 out.yuv
openh264dec welsdec.264

root@linuxhelp1:~# apt-get remove openh264 -y
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
gcc-5-base:i386 libopenh264-3 libstdc++6:i386
Use ' sudo apt autoremove'  to remove them.
The following packages will be REMOVED:
openh264
0 upgraded, 0 newly installed, 1 to remove and 452 not upgraded.
After this operation, 103 kB disk space will be freed.
(Reading database ... 176940 files and directories currently installed.)
Removing openh264 (1.6.0-0ppa1~xenial2) ...
Processing triggers for man-db (2.7.5-1) ...