5782ENC-H264HD-IPASI
Professional Contribution H.264 and MPEG-2 Encoder
Page - 36
Revision 1.0
Audio Encoding Mode:
This control allows the user to specify the type of encoding for the audio.
There are four default selections to choose from:
•
Mpeg-1 Audio Layer II
•
Dolby E Bypass
•
PCM Passthrough
•
Dolby Digital Bypass
There are also other possibilities that can be that can be selected:
•
AAC-LC-2.0
•
AAC-LC-5.1
•
Dolby Digital AC3-2.0
•
Dolby Digital AC3-5.1
•
Dolby Digital Plus-2.0
•
Dolby Digital Plus-5.1
•
Dolby E-5.1+2
•
Dolby E-5.1
•
Dolby Digital Plus-7.1
Advanced Video Settings
GOP Size:
This parameter allows the user to set the GOP (Group of Pictures) size of the compressed
stream. The range is from 15 to 60.
Deblocking:
This parameter allows the user to set a Deblocking level to the stream. Possible values
are Off, Low, Medium and High. A deblocking filter is a filter applied to blocks of video. This can
improve visual quality and prediction performance by smoothing sharp edges that can form between
macro blocks when block coding techniques are used. The filter aims to improve the appearance of
decoded pictures
IDR Pictures:
This parameter allows the user to enable / disable insertion of IDR (Instantaneous
Decoder Refresh) frames. An IDR frame is a special type of I-frame in H.264. An IDR frame specifies
that no frame after the IDR frame can reference any frame before it. This makes seeking the H.264
frames easier and more responsive for the decoder.
Latency Mode:
This parameter allows the user to set the latency mode. Possible values are ULL
(ultra low latency), Low.
Closed GOP:
This parameter allows the user to set the closed GOP. Possible values are open or
closed. A closed GOP cannot contain any frame that refers to a frame in the previous/next GOP.
I-P interval:
This control allows the user to set the intervals between the I and P frames, range is 1 to
4.
