@nwrks/webp-converter

IMG2WEBP(1) General Commands Manual IMG2WEBP(1) 1mNAME0m img2webp - create animated WebP file from a sequence of input images. 1mSYNOPSIS0m 1mimg2webp 22m[file_options] [[frame_options] frame_file]... [-o webp_file] 1mimg2webp argument_file_name0m 1mDESCRIPTION0m This manual page documents the 1mimg2webp 22mcommand. 1mimg2webp 22mcompresses a sequence of images using the animated WebP for- mat. Input images can either be PNG, JPEG, TIFF or WebP. If a single file name (not starting with the character '-') is supplied as the ar- gument, the command line arguments are actually tokenized from this file. This allows for easy scripting or using a large number of argu- ments. 1mFILE-LEVEL OPTIONS0m The file-level options are applied at the beginning of the compression process, before the input frames are read. 1m-o 4m22mstring0m Specify the name of the output WebP file. 1m-min_size0m Encode images to achieve smallest size. This disables key frame insertion and picks the parameters resulting in the smallest output for each frame. It uses lossless compression by default, but can be combined with -q, -m, -lossy or -mixed options. 1m-kmin 4m22mint0m 1m-kmax 4m22mint0m Specify the minimum and maximum distance between consecutive key frames (independently decodable frames) in the output animation. The tool will insert some key frames into the output animation as needed so that this criteria is satisfied. 1m-mixed 22mMixed compression mode: optimize compression of the image by picking either lossy or lossless compression for each frame heuristically. This global option disables the local option 1m-lossy 22mand 1m-lossless 22m. 1m-near_lossless 4m22mint0m Specify the level of near-lossless image preprocessing. This op- tion adjusts pixel values to help compressibility, but has mini- mal impact on the visual quality. It triggers lossless compres- sion mode automatically. The range is 0 (maximum preprocessing) to 100 (no preprocessing, the default). The typical value is around 60. Note that lossy with 1m-q 100 22mcan at times yield better results. 1m-sharp_yuv0m Use more accurate and sharper RGB->YUV conversion if needed. Note that this process is slower than the default 'fast' RGB->YUV conversion. 1m-loop 4m22mint0m Specifies the number of times the animation should loop. Using '0' means 'loop indefinitely'. 1m-v 22mBe more verbose. 1m-h, -help0m A short usage summary. 1m-version0m Print the version numbers of the relevant libraries used. 1mPER-FRAME OPTIONS0m The per-frame options are applied for the images following as arguments in the command line. They can be modified any number of times preceding each particular input image. 1m-d 4m22mint24m Specify the image duration in milliseconds. 1m-lossless, -lossy0m Compress the next image(s) using lossless or lossy compression mode. The default mode is lossless. 1m-q 4m22mfloat0m Specify the compression factor between 0 and 100. The default is 75. 1m-m 4m22mint24m Specify the compression method to use. This parameter controls the trade off between encoding speed and the compressed file size and quality. Possible values range from 0 to 6. Default value is 4. 1mEXAMPLE0m img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp 1mBUGS0m Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp Patches welcome! See this page to get started: https://www.webmpro- ject.org/code/contribute/submitting-patches/ 1mAUTHORS0m 1mimg2webp 22mis a part of libwebp and was written by the WebP team. The latest source tree is available at https://chromium.google- source.com/webm/libwebp This manual page was written by Pascal Massimino <pascal.mas- simino@gmail.com>, for the Debian project (and may be used by others). 1mSEE ALSO0m 1mwebpmux22m(1), 1mgif2webp22m(1) Please refer to https://developers.google.com/speed/webp/ for addi- tional information. March 17, 2023 IMG2WEBP(1)