FFmpeg 1 and 2 Pass Encoding. 2 pass encoding, one of the multi-pass encoding, is a technique for encoding video into another format using two passes to keep the best quality.wo-pass encoding will not make such mistakes. Using statistics of the 1st pass the encoder can estimate the value of each frame in bits. It results in a better distribution of bits between two parts of the video clip. The first dynamic part will get more bits while the second part will get less bits.
The definition of a phylum is a major category of living organisms, or a group of genetically related language families. 1  An example of a phylum is Mollusca which means an invertebrate animal such as an octopus.
In biology, a phylum (/ËfaÉªlÉm/ ; plural: phyla) is a taxonomic rank below kingdom and above class. Traditionally, in botany the term division was used instead of phylum, although from 1993 the International Code of Nomenclature for algae, fungi, and plants accepted the designation phylum.raditionally, in botany the term division was used instead of phylum, although from 1993 the International Code of Nomenclature for algae, fungi, and plants accepted the designation phylum.