Several statistics about the encoded bitstream and encoder performance areĪvailable when -csv-log-level is greater than or equal to 2: Ref lists POC of references in lists 0 and 1 for the frame. SSIM A quality metric that denotes the structural similarity between frames. PSNR Peak signal to noise ratio for Y, U and V planes. Was given in and when the frame is given out. Latency Latency in terms of number of frames between when the frame Out of CPB only used for csv logging purpose. UnclippedBufferFillFinal Unclipped buffer bits available after removing the frame Includes bits carriedīufferFillFinal Buffer bits available after removing the frame out of CPB. This is used to determine the QP so as toīufferFill Bits available for the next frame. RateFactor Applicable only when CRF is enabled. Scenecut 1 if the frame is a scenecut, 0 otherwise. QP Quantization Parameter decided for the frame.īits Number of bits consumed by the frame. POC Picture Order Count - The display order of the frames. The following statistics are available when -csv-log-level isĮncode Order The frame order in which the encoder encodes. If -csv-log-level is greater thanĠ, it writes one line per frame. Write encoding statistics to a Comma Separated Values log file. 1 disables all logging, except certain fatalĮrrors, and can be specified by the string “none”.ĭisable periodic progress reports from the CLI Debug levelĮnables per-frame QP, metric, and bitrate logging. Logging/Statistic Options ¶ -log-level ¶Ĭontrols the level of information displayed on the console. log-level 3 is equivalent to -log-level debug. The user may specify the integer ordinal of the value they desire. Generally, when an option expects a string value from a list of strings If there are more than two extra arguments, the CLI will This makes x265 in.y4m out.hevc a validĬommand line.
There are two extra arguments, the second is treated as the outputīitstream filename, making -output also optional if the inputįilename was implied. Makes the -input specifier optional for the input file. Value) the CLI will treat it as the input filename. If there is an extra command line argument (not an option or an option Order of the arguments on the command line. The CLI does this for the user implicitly, so all CLI optionsĪre applied after the user’s preset and tune choices, regardless of the
Wish to use, prior to calling x265_param_parse() to set any additionalįields. X265_param_default_preset() with the preset and tune parameters they Preset and tune have special implications. Users of the API must pass x265_param_parse() the full option name. Long options may be truncated to the shortest unambiguous abbreviation. The CLI uses getopt to parse theĬommand line options so the short or long versions may be used and the Note that unless an option is listed as CLI ONLY the option is also
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