The improvement is mostly gained from better ratecontrol. See also: -- pass. Disable macroblock tree ratecontrol. Using macroblock tree ratecontrol overall improves the compression by keeping track of temporal propagation across frames and weighting accordingly.
Requires a new large statsfile in addition to the already existing for multipass encodes. See Also: -- rc-lookahead. See Also: -- cplxblur , -- qblur. Apply a gaussian blur with the given radius to the quantizer curve. This means that the quantizer assigned to each frame is blurred temporally with its neighbours to limit quantizer fluctuations.
See also: -- qcomp , -- qblur. Apply a gaussian blur with the given radius to the quantizer curve, after curve compression. Not a very important setting. See also: -- qcomp , -- cplxblur. These two options are special. You can only set one per zone, and if you set one, it must be the first option listed for the zone:. Manual override to standard ratecontrol. Specify a file that gives the quantizer and frametype for specified frames.
The format is 'framenum frametype quantizer'. For example:. These blocks can be further split up into smaller partitions, which is what this option controls. With this option, you enable individual partitions. Partitions are enabled per-frametype i. The available partitions are p8x8, p4x4, b8x8, i8x8, and i4x4.
See also: -- no-8x8dct. Set prediction mode for 'direct' motion vectors. There are two modes available: spatial and temporal.
You can also select none to disable direct MVs, and auto to allow x to swap between them as it sees fit. If you set auto, x outputs information on the usage at the end of the encode. In first-pass auto mode, x keeps a running average of how well each method has so far performed, and picks the next prediction mode from that. Note that you should only enable auto on the second pass if it was enabled on the first pass; if it wasn't, the second pass will default to temporal.
Direct none wastes bits and is strongly discouraged. This disables that feature. Enables use of explicit weighted prediction to improve compression in P-frames. Higher modes are slower. Flash See also: -- merange.
For hex and dia, the range is clamped to , with a default of For umh and esa, it can be increased beyond the default 16 to allow for a wider-range motion search, which is useful on HD footage and for high-motion footage.
Note that for umh, esa, and tesa, increasing merange will significantly slow down encoding. See also: -- me. Set the maximum vertical range of any one motion vector in pixels. The default value is level-dependent:. Note: if you want to manually override the mvrange, subtract 0.
Set the subpixel estimation complexity. Higher numbers are better. Levels simply control the subpixel refinement strength.
RDO levels are significantly slower than the previous levels. Using a value less than 2 will enable a faster, and lower quality lookahead mode, as well as cause poorer -- scenecut decisions to be made, and thus it is not recommended.
Alias of -- subme. Note that Trellis is still considered 'experimental', and almost certainly is a Bad Thing for at least cartoons. See this thread on doom9 for an explanation of psy-rd. This also disables some internal psy optimizations that aren't settable via x's command line arguments. Mixed refs will select refs on a per-8x8 partition, rather than per-macroblock basis.
This improves quality when using multiple reference frames, albeit at some speed cost. Setting this option will disable it. See also: -- ref. Normally, motion estimation works off both the luma and chroma planes. This disables chroma motion estimation for a small speed boost. Adaptive 8x8 DCT enables the intelligent adaptive use of 8x8 transforms in I-frames. This disables the feature. On Macroblock provides a good compromise between speed and efficiency.
On all decisions reduces speed further. See: Trellis Quantization. Note: Requires -- cabac. Disables early skip detection on P-frames. Very slightly increases quality at a large speed cost. This will improve coding efficiency, with a usually negligible loss in quality. Performs fast noise reduction. Estimates film noise based on this value and attempts to remove it by dropping small details before quantization.
This may not match the quality of a good external noise reduction filter, but it performs very fast. Deadzones should be in the range of 0 to The deadzone value sets the level of fine detail that x will arbitrarily drop without attempting to preserve.
Very fine detail is both hard to see and expensive to encode, dropping this detail without attempting to preserve it stops wasting bits on such a low-return section of the video.
Deadzone is incompatible with Trellis. Sets all custom quantization matrices to those of a built-in preset. The built-in presets are flat or JVT. See also: -- cqmfile. Sets custom quantization matrices from a specified JM-compatible file. See also: -- cqm.
These options set a flag in the output stream that can be read by the decoding application and possibly acted on. It's worth noting that most of these options in most scenarios are pointless, and are usually ignored by software decoders. How to handle overscan. Overscan is used here in the sense of a device only displaying part of an image. Recommendation: Crop before encoding and use show if your device supports it, otherwise ignore.
Indicates whether to use the full range of luma and chroma levels. If set to off, the limited ranges will be used. See this page for a simple description. Recommendation: If your source is digitized from analog video, then set this to off. Otherwise, set it to on. Set the opto-electronic transfer characteristics to use. Sets the gamma curve to use for correction.
See: Gamma Correction. See: YCbCr. Sets the chroma sample location. See x's vui. Signal HRD information. Required for Blu-ray streams, television broadcast and a few other specialist areas. Acceptable values are:. See also: -- vbv-bufsize , -- vbv-maxrate , -- aud. Specifies output filename. The extension you specify determines the output format of your video. If the extension is not recognised the default output format is the raw video stream generally stored with the.
This is particularly useful when using pass 1, as the only output you care about is that from stats. See also: -- output. If the input file has an extension of raw, y4m or avs, x will use the relevant demuxer to read the file. Standard input uses the raw demuxer. Otherwise, x will attempt to open the file with ffms, then lavf, and then fail. The 'lavf' and 'ffms' options require x to be compiled with the respective libraries.
If either is used, x will carry over the timecodes from the input file, provided you don't output to raw. This effectively makes x VFR-aware. The other options can have a constant framerate specified with -- fps or a variable framerate with -- tcfile-in. See also: -- input , -- muxer. Tell x what colourspace your raw video input is with this switch. Supported colourspaces are listed in x --fullhelp. See Also: -- input-res , -- fps. Specify the input resolution of raw video input. Use the syntax --input-res x See Also: -- input-csp , -- fps.
An optional setting that only takes effect when using the ffms -- demuxer. Specifies a file for ffms to write out indexing data for the input file to, which can be referred to in a future encode to remove the need to reindex the video.
Generally not needed -- indexing is not a slow process relative to video encoding. See Main Article here Recommendation: You might need to set this if you're using the resize filter and encoding with anamorphic input.
Specifies video framerate as either a float Setting this implies force-cfr. If you are using raw YUV input and -- bitrate -based ratecontrol, you need to specify the correct framerate using this parameter or -- tcfile-in. Specifies the maximum number of frames to encode, allowing the encode to finish at any point before the end of the source. Sets the level flag in the output bitstream as defined by Annex A of the H.
Permissible levels are:. If you do not specify --level on the commandline, x will attempt to autodetect the level. This detection is not perfect and may underestimate the level if you are not using VBV. Level 4. Blu-ray Discs only support level 4. Wikipedia has a nice chart detailing the restrictions for each level, if you want to read it. Enables PSNR calculations that are reported on completion at the cost of a small decrease in speed.
Enables SSIM calculations that are reported on completion at the cost of a small decrease in speed. Default: auto frame based threads: 1. Enables parallel encoding by using more than 1 thread to increase speed on multi-core systems. The quality loss from multiple threads is mostly negligible unless using very high numbers of threads say, above The speed gain should be slightly less than linear until you start using more than 1 thread per 40px of vertical video, at which point the gain from additional threads sharply decreases.
See also: thread-input , sliced-threads. Enables slice-based threading. This threading method produces lower quality results than the default method both compression and efficiency-wise, but adds no encoding latency.
Recommendation: Default off , unless you are doing some sort of realtime streaming or low latency is important. Sets the number of frames to be used as a buffer for threaded lookahead. Maximum Value is Automatically disabled during the 2nd or greater pass or when using sliced threads. Setting this to 0 disables threaded lookahead, which allows lower latency at the cost of reduced performance. This enables multi-threaded mv and uses the entire lookahead buffer in slicetype decisions when slicetype is threaded -- rather than just the minimum amount known to be available.
Enables Macroblock Type visualizations over the encoded video. Useful for frame by frame debugging or analysis. Dumps the reconstructed YUV frames to the specified file. Useful mostly for debugging. Not for general use. If using ffms2 or lavf demuxers, timecodes are copied from the input file, provided the output file is not raw. This option disables this, and forces x to generate its own.
When using this you probably also want to set -- fps. Specify a timecodes file which should be used to interpret the framerate of the input video. The timecode file can be in either v1 or v2 format which are described in the mkvmerge documentation. See Also: tcfile-out , force-cfr , fps. Output a timecode file v2 format based on the input timestamps. For use when you're encoding a VFR input video and want to dump the timecodes. For details on the file format, see tcfile-in. The numerator is 'seconds', and the denominator is 'ticks'.
Means how many seconds one tick takes. Not compatible with -- force-cfr mode. As per the commit message for this change, use at your own risk. Each frame is allocated a DTS that reflects its position in the 'coded order' of the stream, as opposed to the 'display order' of the stream, which is specified by the P resentation T ime S tamp. The order frames are stored in the stream is different to the order they are displayed due to compression techniques such as B-frames, which result in frames requiring data from frames that will be displayed after.
The x filtering system is used to process the input video before encoding. Multiple filters can also be applied sequentially to the input video. Requires x to be compiled with libswscale. Every step frames, take only the frames specified with an offset.
For example: To encode every second frame:. You can see more examples at the Avisynth wiki which has an identical filter. X Settings From MeWiki.
Jump to: navigation , search. Contents [ hide ]. Views Page Discussion Edit History. Contents [ hide ] 1 x Settings 1. Q: How do I know that this guide will work for me? A: Sure I and other members can, just post a screenshot of your dxcpl. A: Turn all display settings to there lowest. How big of a download is warp? I was able to download the small file from the first link, but when I went to the second one and tried to download the full file Windows 7 and.
NET Framework 4 it told me the link was no longer available. So I clicked the install on and it took me to the first link you sent. At first I thought this link was Warp, but now I am not so sure. So can anyone please tell me where I can find a full download version of this please? Thank you! This is a lifesaver!
Maniac Gamer 12 Feb, am. Im trying to do this with the steam vr compositor, got any ideas? Evident [author] 25 Apr, pm. This guide is intended only for Watch Dogs and is not guarenteed to work for any other game. MR F 21 Apr, pm.
I'm trying to play Scrap Mechanic on a DX10 card. It requires a DX11 card. Plz help! Raymond 11 Feb, pm. Does anybody know how to use this app on games like Space engineer or Civ VI.
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