[0:00] [Music]
[0:12] in this video we'll explore h.264
[0:16] encoding and decoding all made possible
[0:18] by a single matrox Mira ipx 4K capture
[0:21] and IP encode decode card because h.264
[0:25] both encodes and decodes content it is
[0:28] referred to as a codec an algorithm
[0:31] which packages and unpackaged content
[0:34] for further streaming or recording
[0:37] encoding is another term for compression
[0:39] which reduces the size of a file making
[0:42] it easier to transmit over a distance
[0:45] and or to be disseminated to multiple
[0:48] endpoints or nodes as part of a network
[0:51] decoding on the other hand reverses this
[0:54] process and decompresses the
[0:58] content h.264 4 is just one of many
[1:00] codecs designed to package together
[1:03] content for the purpose of streaming or
[1:05] recording also known as EG 4 AVC it is
[1:08] the most universally deployed codec in
[1:11] use today as a result of this h.264 is
[1:14] the optimal codec choice right now
[1:17] different levels of h.264 encoding and
[1:20] decoding are available with the highest
[1:23] level being
[1:25] 5.2 h.264 predicts the makeup of frames
[1:29] comprising the con content assessing
[1:31] information or areas that require more
[1:33] or less compression for example during a
[1:37] video of a press conference a relatively
[1:39] stationary subject stands between a
[1:42] Podium and a backdrop both of which are
[1:45] even more static h.264 deduces which
[1:48] areas will not change from frame to
[1:49] frame and acts to compress accordingly
[1:53] it does this more efficiently than other
[1:55] codecs would in its place h.264
[1:59] effectively balance bces a tight RPP
[2:01] between visual quality and file size for
[2:04] costeffective bit rate management as a
[2:06] result bandwidth consumption is reduced
[2:09] when Distributing and recording content
[2:12] and the amount of space when storing it
[2:14] as a result it all costs less bit rate
[2:18] is defined as the amount of data encoded
[2:21] per second the higher the bit rate the
[2:23] higher the quality of the video because
[2:26] more data is transmitted at a higher bit
[2:28] rate it ALS also means a higher cost as
[2:31] well for example take two videos that
[2:34] are showing exactly the same content one
[2:37] has a resolution of 1080P and the other
[2:40] is a larger 4K video both can be
[2:44] streamed at the same bit rate however
[2:46] the 4K content will require more
[2:48] compression to accomplish this and look
[2:51] worse as a result in order to maintain
[2:54] the same quality for the 4K video the
[2:56] bit rate will have to increase similarly
[2:59] image quality shares an inverse
[3:01] relationship with frame rate the higher
[3:03] the frame rate the more data there is to
[3:06] encode with a 60 HZ video possessing
[3:09] twice the number of frames per second as
[3:12] a 30 HZ
[3:13] clip when there are more frames there's
[3:16] more data to encode for example in high
[3:19] frequency content like live sports
[3:22] higher frame rates are required for the
[3:24] video to be watchable and in turn higher
[3:27] bit rates are needed to transmit this
[3:30] video meanwhile bit rate control can be
[3:32] described as either constant or variable
[3:35] bit rates can either maintain a constant
[3:37] flow of data for consistent quality or
[3:40] have the codec determine how much
[3:42] compression is needed for each frame for
[3:45] greater efficiency remember the example
[3:47] of the press conference imagine that as
[3:49] one scene in a longer video and one
[3:52] which could employ a fair amount of
[3:54] compression in contrast a car chase
[3:57] scene with multiple camera angles and
[3:59] constantly changing motion would involve
[4:02] far more unique frames and therefore be
[4:05] less able to employ compression the
[4:08] highly efficient h.264 codec is in part
[4:12] what separates matrox mura ipx cards
[4:15] from the competition able to record and
[4:18] stream highquality h.264 encoded video
[4:21] to any device with h.264 decoding
[4:24] capabilities over IP at low bit rates
[4:28] Mira ipx creates Network enabled video
[4:30] walls with a single addin
[4:34] card to learn more about mura ipx
[4:37] features and how they relate to
[4:39] h.264 view the second part of this video
[4:42] or visit mat.com
[4:44] graphics /a ipx