sampling factors used by JPEG or MPEG-2 encoder and
YUV decoder/encoder.
This attribute specifies the sampling factors to be used
by the JPEG encoder for chroma downsampling.
If this attribute is omitted, the JPEG library will use its
own default values. When reading or writing the YUV format and
when writing the M2V (MPEG-2) format, use sampling-factor="2x1"
to specify the 4:2:2 downsampling method.
sampling factors used by JPEG or MPEG-2 encoder and YUV decoder/encoder.
This attribute specifies the sampling factors to be used by the JPEG encoder for chroma downsampling. If this attribute is omitted, the JPEG library will use its own default values. When reading or writing the YUV format and when writing the M2V (MPEG-2) format, use sampling-factor="2x1" to specify the 4:2:2 downsampling method.