Leif Andersen LeifAndersen
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| #lang scratch | |
| (module untyped racket | |
| (provide u) | |
| (define (u . x) | |
| x)) | |
| (module typed typed/racket | |
| (require/typed (submod ".." untyped) | |
| [u Any]) |
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| #lang video | |
| (require video/core) | |
| (define screen | |
| (make-producer #:type 'avformat | |
| #:source "test.mov" | |
| #:prop (hash "video_index" | |
| 0))) |
LeifAndersen
/ gist:86bc3a2d55357b4ec83adeae12be414d
Created
June 11, 2017 03:41
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| libavcodec.dylib: | |
| /opt/ffmpeg/lib/libavcodec.57.dylib (compatibility version 57.0.0, current version 57.89.100) | |
| /opt/ffmpeg/lib/libswresample.2.dylib (compatibility version 2.0.0, current version 2.7.100) | |
| /opt/ffmpeg/lib/libavutil.55.dylib (compatibility version 55.0.0, current version 55.58.100) | |
| /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore (compatibility version 1.2.0, current version 1.11.0) | |
| /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 1404.47.0) | |
| /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0) | |
| /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo (compatibility version 1.2.0, current version 1.5.0) | |
| /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation (compatibility version 300.0.0, current version 1259.0.0) | |
| /System/Library/Frameworks/AVFoundation.framework/Versions/A/AVFoundation (compatibility version 1.0.0, curre |
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| digraph G { | |
| node0 [label="(filter-node\n '#:filters\n (hash\n 'audio\n (filter \"asetpts\" '#hash((\"expr\" . \"PTS-STARTPTS\")) #f)\n 'video\n (filter \"setpts\" '#hash((\"expr\" . \"PTS-STARTPTS\")) #f))\n '#:props\n #<void>\n '#:counts\n '#hash((audio . 1) (video . 1)))\n"]; | |
| node1 [label="(filter-node\n '#:filters\n (hash\n 'audio\n (filter \"concat\" '#hash((\"v\" . 0) (\"a\" . 1) (\"n\" . 1)) #f)\n 'video\n (filter \"concat\" '#hash((\"v\" . 1) (\"a\" . 0) (\"n\" . 1)) #f))\n '#:props\n '#hash((\"width\" . 1920)\n (\"end\" . 20)\n (\"fps\" . 30)\n (\"height\" . 1080)\n (\"start\" . 0))\n '#:counts\n '#hash((audio . 1) (video . 1)))\n"]; | |
| node2 [label="(filter-node\n '#:filters\n (hash 'audio (filter \"afifo\" '#hash() #f) 'video (filter \"fifo\" '#hash() #f))\n '#:props\n '#hash()\n '#:counts\n '#hash((audio . 1) (video . 1)))\n"]; | |
| node3 [label="(filter-node\n '#:filters\n (hash 'audio (filter \"afifo\" '#hash() #f) 'video (filter \"fifo\" '#hash() #f))\n '#:props\n |
LeifAndersen
/ gist:74a0eeff053ee6f425a3c87b681c73ed
Created
July 5, 2017 21:13
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| $ racket -l errortrace -t render.rkt | |
| digraph G { | |
| node0 [label="#<sink-node>\n"]; | |
| node1 [label="#<source-node>\n"]; | |
| subgraph U { | |
| edge [dir=none]; | |
| } | |
| subgraph D { | |
| node1 -> node0 [label="1"]; | |
| } |
LeifAndersen
/ gist:4ad123e2bf3b528f5d13b10d4f78d973
Created
July 6, 2017 20:32
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| $ ffmpeg -i demo.mp4 -filter_complex "[a:0]asetpts=2*(PTS-STARTPTS)[fa]" -map "[fa]" out.mp3 | |
| ffmpeg version 3.3.2 Copyright (c) 2000-2017 the FFmpeg developers | |
| built with Apple LLVM version 8.0.0 (clang-800.0.42.1) | |
| configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda | |
| libavutil 55. 58.100 / 55. 58.100 | |
| libavcodec 57. 89.100 / 57. 89.100 | |
| libavformat 57. 71.100 / 57. 71.100 | |
| libavdevice 57. 6.100 / 57. 6.100 | |
| libavfilter 6. 82.100 / 6. 82.100 | |
| libavresample 3. 5. 0 / 3. 5. 0 |
LeifAndersen
/ gist:a2a3892d5aa1c2c7a48a735087ad0bad
Created
July 6, 2017 20:57
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| leif@FATT ~ $ ffprobe out.mkv | |
| ffprobe version 3.3.2 Copyright (c) 2007-2017 the FFmpeg developers | |
| built with Apple LLVM version 8.0.0 (clang-800.0.42.1) | |
| configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda | |
| libavutil 55. 58.100 / 55. 58.100 | |
| libavcodec 57. 89.100 / 57. 89.100 | |
| libavformat 57. 71.100 / 57. 71.100 | |
| libavdevice 57. 6.100 / 57. 6.100 | |
| libavfilter 6. 82.100 / 6. 82.100 | |
| libavresample 3. 5. 0 / 3. 5. 0 |
LeifAndersen
/ gist:81f3dcd5f3e4bd69955afbcf127b23e5
Created
July 8, 2017 19:54
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| $ ffprobe test.mp4 | |
| ffprobe version 3.3.2 Copyright (c) 2007-2017 the FFmpeg developers | |
| built with Apple LLVM version 8.0.0 (clang-800.0.42.1) | |
| configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda | |
| libavutil 55. 58.100 / 55. 58.100 | |
| libavcodec 57. 89.100 / 57. 89.100 | |
| libavformat 57. 71.100 / 57. 71.100 | |
| libavdevice 57. 6.100 / 57. 6.100 | |
| libavfilter 6. 82.100 / 6. 82.100 | |
| libavresample 3. 5. 0 / 3. 5. 0 |
LeifAndersen
/ gist:7b59aa17c96956038aaa685c38dd7ebc
Created
July 8, 2017 21:40
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| # ./configure --enable-shared --disable-sdl2 --disable-indev=jack --libdir='@loader_path' --enable-libopenh264 --pkgconfigdir=/Users/leif/src/openh264 | |
| ALL_COMPONENTS=' | |
| aac_adtstoasc_bsf | |
| chomp_bsf | |
| dump_extradata_bsf | |
| dca_core_bsf | |
| extract_extradata_bsf | |
| h264_mp4toannexb_bsf | |
| hevc_mp4toannexb_bsf | |
| imx_dump_header_bsf |
LeifAndersen
/ gist:353e0da21d9213dcd6a79cbd9b8c94ee
Created
July 12, 2017 14:26
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| #lang racket | |
| (require ffi/unsafe | |
| ffi/unsafe/define | |
| ffi/unsafe/define/conventions | |
| ffi/unsafe/alloc | |
| setup/dirs) | |
| (define-ffi-definer define-avutil (ffi-lib "libavutil" "55") | |
| #:make-c-id convention:hyphen->underscore) |