This is closely related to constant quantizer encoding, though CRF mode generally achieves better compression than constant Q encoding by reducing the quantizer quality on "less important" frames. H.264 and general optionsĬrf: CRF is a bitrate-control setting, and sets a constant ratefactor.
f4v is preferred.ĪAC and MP3 audio codecs are valid alongside H.264. flv is not a recommended file extension for H.264 Flash video. H.264 is typically deployed in the MP4 file container. H.264 is the dominant video codec today for web and mobile video. Zencoder encodes H.264 content using a variety of software, but our core encoder is the excellent x264, the best H.264 encoder available, and one of the best video encoding implementations for any codec. It is also an excellent codec for desktop video. H.264 can be played in 99.9% of web browsers, on many mobile devices (including the iPhone/iPad, Android), as well as many connected television and streaming devices. Its compression quality ranks among the best of the modern codecs along with HEVC and VP9. The dominant video codec today for web and mobile video is H.264. H.264 Advanced Guide This page documents H.264-specific encoding with Zencoder.
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