Recommended range for default rc_eq: 0.0-1.0.
Set video quantizer scale compression (VBR).
It is set by some decoders to indicate constantĭelay integer qcomp float ( encoding,video ) May be 0 when the codec has CODEC_CAP_VARIABLE_FRAME_SIZE set, in that case (Supported only by selected encoders, see their respectiveĮach submitted frame except the last must contain exactly frame_size samples perĬhannel. For fixed-fps content, timebase should be "1 / frame_rate" and timestamp It is the fundamental unit of time (in seconds) in terms of which frame timestamps are Its primary use is for regression testing.Īic Apply H263 advanced intra coding / mpeg4 ac prediction.Ĭbp Deprecated, use mpegvideo private options instead.ĭeprecated, use mpegvideo private options instead.Įsa esa motion estimation (alias for full)ĭia dia motion estimation (alias for epzs) ThisĮnsures that file and data checksums are reproducible and match between platforms. Only write platform-, build- and time-independent data. Place global headers in extradata instead of every keyframe. Truncated naq Normalize adaptive quantization. Use internal 2pass ratecontrol in second pass mode. Use internal 2pass ratecontrol in first pass mode. Mv4 Use four motion vector by macroblock (mpeg4). Lowering tolerance too much has an adverse effectįlags flags ( decoding/encoding,audio,video,subtitles ) How far ratecontrol is willing to deviate from the target average bitrate value. In 1-pass mode, bitrate tolerance specifies Value explicitly in the "AVCodecContext" options or using the libavutil/opt.h API for Options may be set by specifying - option value in the FFmpeg tools, or by setting the Also some options are meant only for decoding or encoding. Nonsensical or ignored by another, so you need to be aware of the meaning of the specified Sometimes, a global option may only affect a specific kind of codec, and may be In addition each codec may support so-called private options, which are specific Libavcodec provides some generic global options, which can be set on all the encoders andĭecoders.
This document describes the codecs (decoders and encoders) provided by the libavcodec
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