公开(公告)号：US08824547B2

公开(公告)日：2014-09-02

申请号：US13977215

申请日：2011-12-20

申请人： Michael Erling Nilsson ,  Rory Stewart Turnbull ,  Christopher Mark Reason

发明人： Michael Erling Nilsson ,  Rory Stewart Turnbull ,  Christopher Mark Reason

IPC分类号： H04N7/26 ,  H04N7/40

CPC分类号： H04N19/00169 ,  H04N19/115 ,  H04N19/154 ,  H04N19/177 ,  H04N19/194

摘要： Methods and apparatus for video coding are disclosed, particularly for use in relation to video compression. Many commercially available video encoders support constant bit-rate encoding but not constant quality encoding. Aspects of the present invention are concerned with methods and apparatus for video coding, the methods involving the determination of bit-rates at which a constant bit-rate encoder may be operated such that segments of video can be chosen from files encoded at the bit-rates so-determined in order to produce an output bitstream in which the quality is nearly constant. Bit-stream segments may be chosen from a low bit-rate bitstream for easy-to-compress scenes, and from a high bit-rate bitstream for hard-to-compress scenes.

摘要翻译： 公开了用于视频编码的方法和装置，特别是用于视频压缩。 许多市售的视频编码器支持恒定的比特率编码，但不支持恒定的质量编码。 本发明的方面涉及用于视频编码的方法和装置，涉及确定可以操作恒定比特率编码器的比特率的方法，使得可以从比特率编码的文件中选择视频片段， 为了产生质量接近恒定的输出比特流而被确定的速率。 比特流片段可以从用于易压缩场景的低比特率比特流以及用于难以压缩场景的高比特率比特流中选择。

公开(公告)号：US20130279565A1

公开(公告)日：2013-10-24

申请号：US13977215

申请日：2011-12-20

申请人： Michael Erling Nilsson ,  Rory Stewart Turnbull ,  Christopher Mark Reason

发明人： Michael Erling Nilsson ,  Rory Stewart Turnbull ,  Christopher Mark Reason

IPC分类号： H04N7/26

CPC分类号： H04N19/00169 ,  H04N19/115 ,  H04N19/154 ,  H04N19/177 ,  H04N19/194

摘要： Methods and apparatus for video coding are disclosed, particularly for use in relation to video compression. Many commercially available video encoders support constant bit-rate encoding but not constant quality encoding. Aspects of the present invention are concerned with methods and apparatus for video coding, the methods involving the determination of bit-rates at which a constant bit-rate encoder may be operated such that segments of video can be chosen from files encoded at the bit-rates so-determined in order to produce an output bitstream in which the quality is nearly constant. Bit-stream segments may be chosen from a low bit-rate bitstream for easy-to-compress scenes, and from a high bit-rate bitstream for hard-to-compress scenes.

摘要翻译： 公开了用于视频编码的方法和装置，特别是用于视频压缩。 许多市售的视频编码器支持恒定的比特率编码，但不支持恒定的质量编码。 本发明的方面涉及用于视频编码的方法和装置，涉及确定可以操作恒定比特率编码器的比特率的方法，使得可以从比特率编码的文件中选择视频片段， 为了产生质量接近恒定的输出比特流而被确定的速率。 比特流片段可以从用于易压缩场景的低比特率比特流以及用于难以压缩场景的高比特率比特流中选择。