Updated a bit .... https://www.dpreview.com/forums/post/5394197 - see for LZW patent, I tested rgba-float project rendering one frame into LZW-compressed tiff, and it worked, at least I can see image/alpha in GIMP (2.10.18). I wonder how many tiff readers today ready to deal with lzma2 compressed tiffs? I wonder if I should try to add png compression level to GUI :} ---------- Пересланное сообщение ---------- Тема: filetiff patch Дата: Воскресенье 15 марта 2020 Отправитель: Andrew Randrianasulu <[email protected]> Получатель: "Cinelerra.GG" <[email protected]> I tried few more compression schemas from libtiff 4.0.10 tiff.h: #define TIFFTAG_COMPRESSION 259 /* data compression technique */ #define COMPRESSION_NONE 1 /* dump mode */ #define COMPRESSION_CCITTRLE 2 /* CCITT modified Huffman RLE */ #define COMPRESSION_CCITTFAX3 3 /* CCITT Group 3 fax encoding */ #define COMPRESSION_CCITT_T4 3 /* CCITT T.4 (TIFF 6 name) */ #define COMPRESSION_CCITTFAX4 4 /* CCITT Group 4 fax encoding */ #define COMPRESSION_CCITT_T6 4 /* CCITT T.6 (TIFF 6 name) */ #define COMPRESSION_LZW 5 /* Lempel-Ziv & Welch */ #define COMPRESSION_OJPEG 6 /* !6.0 JPEG */ #define COMPRESSION_JPEG 7 /* %JPEG DCT compression */ #define COMPRESSION_T85 9 /* !TIFF/FX T.85 JBIG compression */ #define COMPRESSION_T43 10 /* !TIFF/FX T.43 colour by layered JBIG compression */ #define COMPRESSION_NEXT 32766 /* NeXT 2-bit RLE */ #define COMPRESSION_CCITTRLEW 32771 /* #1 w/ word alignment */ #define COMPRESSION_PACKBITS 32773 /* Macintosh RLE */ #define COMPRESSION_THUNDERSCAN 32809 /* ThunderScan RLE */ /* codes 32895-32898 are reserved for ANSI IT8 TIFF/IT <[email protected]) */ #define COMPRESSION_IT8CTPAD 32895 /* IT8 CT w/padding */ #define COMPRESSION_IT8LW 32896 /* IT8 Linework RLE */ #define COMPRESSION_IT8MP 32897 /* IT8 Monochrome picture */ #define COMPRESSION_IT8BL 32898 /* IT8 Binary line art */ /* compression codes 32908-32911 are reserved for Pixar */ #define COMPRESSION_PIXARFILM 32908 /* Pixar companded 10bit LZW */ #define COMPRESSION_PIXARLOG 32909 /* Pixar companded 11bit ZIP */ #define COMPRESSION_DEFLATE 32946 /* Deflate compression */ #define COMPRESSION_ADOBE_DEFLATE 8 /* Deflate compression, as recognized by Adobe */ /* compression code 32947 is reserved for Oceana Matrix <[email protected]> */ #define COMPRESSION_DCS 32947 /* Kodak DCS encoding */ #define COMPRESSION_JBIG 34661 /* ISO JBIG */ #define COMPRESSION_SGILOG 34676 /* SGI Log Luminance RLE */ #define COMPRESSION_SGILOG24 34677 /* SGI Log 24-bit packed */ #define COMPRESSION_JP2000 34712 /* Leadtools JPEG2000 */ #define COMPRESSION_LERC 34887 /* ESRI Lerc codec: https://github.com/Esri/lerc */ /* compression codes 34887-34889 are reserved for ESRI */ #define COMPRESSION_LZMA 34925 /* LZMA2 */ #define COMPRESSION_ZSTD 50000 /* ZSTD: WARNING not registered in Adobe-maintained registry */ #define COMPRESSION_WEBP 50001 /* WEBP: WARNING not registered in Adobe-maintained registry */ Sadly, only deflate worked with 32-bit floating point session. Others complained like FileTIFF: Compression scheme 32908 scanline encoding is not implemented. Also, GIMP complained a bit, but allow me to open image anyway: tiff_io_warning: [TIFFReadDirectory] Sum of Photometric type-related color channels and ExtraSamples doesn't match SamplesPerPixel. Defining non-color channels as ExtraSamples. tiff_io_warning: [TIFFReadDirectory] Sum of Photometric type-related color channels and ExtraSamples doesn't match SamplesPerPixel. Defining non-color channels as ExtraSamples. tiff_io_warning: [TIFFReadDirectory] Sum of Photometric type-related color channels and ExtraSamples doesn't match SamplesPerPixel. Defining non-color channels as ExtraSamples. tiff_io_warning: [TIFFReadDirectory] Sum of Photometric type-related color channels and ExtraSamples doesn't match SamplesPerPixel. Defining non-color channels as ExtraSamples. bps: 32 load_contiguous bytes_per_pixel: 16, format: 16 Probably for other compression schemas differet, non-scanline method of calling libtiff must be used? Also, a bit of nipicking (?) but Cinelerra doesn' show single-frame rendering correctly in stats: ** rendered 0 frames in 14.170 secs, 0.000 fps Render::render_single: Session finished. ** rendered 355 frames in 249.619 secs, 1.422 fps Render::render_single: Session finished. ** rendered 0 frames in 3.640 secs, 0.000 fps Shouldn't it be 1 frame, at least? -------------------------------------------------------