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Autres articles (79)
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D’autres logiciels intéressants
12 avril 2011, parOn ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
Videopress
Site Internet : (...) -
MediaSPIP Player : problèmes potentiels
22 février 2011, parLe lecteur ne fonctionne pas sur Internet Explorer
Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...) -
L’agrémenter visuellement
10 avril 2011MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté.
Sur d’autres sites (5409)
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Brute Force Dimensional Analysis
15 juillet 2010, par Multimedia Mike — Game Hacking, PythonI was poking at the data files of a really bad (is there any other kind ?) interactive movie video game known simply by one letter : D. The Sega Saturn version of the game is comprised primarily of Sega FILM/CPK files, about which I wrote the book. The second most prolific file type bears the extension ’.dg2’. Cursory examination of sample files revealed an apparently headerless format. Many of the video files are 288x144 in resolution. Multiplying that width by that height and then doubling it (as in, 2 bytes/pixel) yields 82944, which happens to be the size of a number of these DG2 files. Now, if only I had a tool that could take a suspected raw RGB file and convert it to a more standard image format.
Here’s the FFmpeg conversion recipe I used :
ffmpeg -f rawvideo -pix_fmt rgb555 -s 288x144 -i raw_file -y output.png
So that covers the files that are suspected to be 288x144 in dimension. But what about other file sizes ? My brute force approach was to try all possible dimensions that would yield a particular file size. The Python code for performing this operation is listed at the end of this post.
It’s interesting to view the progression as the script compresses to different sizes :
That ’D’ is supposed to be red. So right away, we see that rgb555(le) is not the correct input format. Annoyingly, FFmpeg cannot handle rgb555be as a raw input format. But this little project worked well enough as a proof of concept.
If you want to toy around with these files (and I know you do), I have uploaded a selection at : http://multimedia.cx/dg2/.
Here is my quick Python script for converting one of these files to every acceptable resolution.
work-out-resolution.py :
PYTHON :-
# !/usr/bin/python
-
-
import commands
-
import math
-
import os
-
import sys
-
-
FFMPEG = "/path/to/ffmpeg"
-
-
def convert_file(width, height, filename) :
-
outfile = "%s-%dx%d.png" % (filename, width, height)
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command = "%s -f rawvideo -pix_fmt rgb555 -s %dx%d -i %s -y %s" % (FFMPEG, width, height, filename, outfile)
-
commands.getstatusoutput(command)
-
-
if len(sys.argv) <2 :
-
print "USAGE : work-out-resolution.py <file>"
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sys.exit(1)
-
-
filename = sys.argv[1]
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if not os.path.exists(filename) :
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print filename + " does not exist"
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sys.exit(1)
-
-
filesize = os.path.getsize(filename) / 2
-
-
limit = int(math.sqrt(filesize)) + 1
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for i in xrange(1, limit) :
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if filesize % i == 0 and filesize & 1 == 0 :
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convert_file(i, filesize / i, filename)
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convert_file(filesize / i, i, filename)
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-
Compile Shotdetect on CentOS 7
14 septembre 2015, par BitLegacy01I’m migrating a service from a Debian server to a CentOS 7 one.
The service needs the Shotdetect command (github , official site).
I could not make it work on CentOS though I followed all steps :
-
Compile ffmpeg compilation guide
# ffmpeg
ffmpeg version git-2015-08-21-7a806c6 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-9)
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --disable-libmp3lame --disable-libopus --disable-libvorbis --disable-libvpx --enable-libx264 --disable-libx265 --disable-lzma
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 58.100 / 56. 58.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 36.100 / 5. 36.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...-
Install needed packages
# yum install gd-devel libxml2-devel libxslt-devel clang libvpx libvorbis
-
Add pthread in the CMakeList file, in TARGET_LINK_LIBRARIES, because it throws an lpthread missing in linker error
-
Compile Shotdetect
# FFMPEG_DIR="/root/ffmpeg_build" ./compile.sh cmd
-
5.Lost in contemplation
-- avformat library found: /root/ffmpeg_build/lib/libavformat.a
-- avcodec library found: /root/ffmpeg_build/lib/libavcodec.a
-- avutil library found: /root/ffmpeg_build/lib/libavutil.a
-- swscale library found: /root/ffmpeg_build/lib/libswscale.a
Found all FFmpeg libraries in /root/ffmpeg_build/lib/libavformat.a;/root/ffmpeg_build/lib/libavdevice.a;/root/ffmpeg_build/lib/libavcodec.a;/root/ffmpeg_build/lib/libavutil.a;/root/ffmpeg_build/lib/libswscale.a.
-- Found GD: /usr/lib64/libgd.so
Found libgd: /usr/lib64/libgd.so;/usr/lib64/libpng.so;/usr/lib64/libz.so;/usr/lib64/libjpeg.so in /usr/include
Found libxml2: /usr/lib64/libxml2.so in /usr/include/libxml2
Found libxslt: /usr/lib64/libxslt.so in /usr/include
-- Configuring done
-- Generating done
-- Build files have been written to: /root/Shotdetect-master/build
[ 71%] Built target shotdetect
Linking CXX executable shotdetect-cmd
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « fdk_aac_decode_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:323: undefined reference to « aacDecoder_Fill »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:329: undefined reference to « aacDecoder_DecodeFrame »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « get_stream_info »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:88: undefined reference to « aacDecoder_GetStreamInfo »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « fdk_aac_decode_close »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:201: undefined reference to « aacDecoder_Close »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « fdk_aac_decode_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:214: undefined reference to « aacDecoder_Open »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:221: undefined reference to « aacDecoder_ConfigRaw »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:228: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:252: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:270: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:277: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:284: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o):/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:291: encore plus de références indéfinies suivent vers « aacDecoder_SetParam »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « fdk_aac_decode_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:261: undefined reference to « aacDecoder_AncDataInit »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacdec.o): in the function « fdk_aac_decode_flush »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacdec.c:367: undefined reference to « aacDecoder_SetParam »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacenc.o): in the function « aac_encode_close »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:97: undefined reference to « aacEncClose »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacenc.o): in the function « aac_encode_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:357: undefined reference to « aacEncEncode »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacenc.o): in the function « aac_encode_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:114: undefined reference to « aacEncOpen »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:123: undefined reference to « aacEncoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:130: undefined reference to « aacEncoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:138: undefined reference to « aacEncoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:172: undefined reference to « aacEncoder_SetParam »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:179: undefined reference to « aacEncoder_SetParam »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacenc.o):/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:197: encore plus de références indéfinies suivent vers « aacEncoder_SetParam »
/root/ffmpeg_build/lib/libavcodec.a(libfdk-aacenc.o): in the function « aac_encode_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:276: undefined reference to « aacEncEncode »
/root/ffmpeg_sources/ffmpeg/libavcodec/libfdk-aacenc.c:282: undefined reference to « aacEncInfo »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « X264_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:260: undefined reference to « x264_picture_init »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:262: undefined reference to « x264_bit_depth »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « reconfig_encoder »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:246: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « X264_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:283: undefined reference to « x264_encoder_encode »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:289: undefined reference to « x264_encoder_delayed_frames »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:283: undefined reference to « x264_encoder_encode »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « reconfig_encoder »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:173: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:178: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:185: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:205: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:211: undefined reference to « x264_encoder_reconfig »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o):/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:191: encore plus de références indéfinies suivent vers « x264_encoder_reconfig »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « X264_init_static »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:806: undefined reference to « x264_bit_depth »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « X264_close »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:339: undefined reference to « x264_encoder_close »
/root/ffmpeg_build/lib/libavcodec.a(libx264.o): in the function « X264_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:413: undefined reference to « x264_param_default »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:418: undefined reference to « x264_param_default_preset »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:440: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:470: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:514: undefined reference to « x264_levels »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:516: undefined reference to « x264_levels »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:540: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:541: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:542: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:543: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:601: undefined reference to « x264_param_apply_fastfirstpass »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:651: undefined reference to « x264_param_apply_profile »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:703: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:705: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:717: undefined reference to « x264_param_parse »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:735: undefined reference to « x264_encoder_open_148 »
/root/ffmpeg_sources/ffmpeg/libavcodec/libx264.c:744: undefined reference to « x264_encoder_headers »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_subpacket »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:379: undefined reference to « swr_is_initialized »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:220: undefined reference to « swr_is_initialized »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_init_resample »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:161: undefined reference to « swr_init »
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:167: undefined reference to « swr_convert »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_frame »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:234: undefined reference to « swr_convert »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_flush_resample »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:115: undefined reference to « swr_convert »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_subpacket »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:411: undefined reference to « swr_close »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_flush »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:614: undefined reference to « swr_close »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_close »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:638: undefined reference to « swr_free »
/root/ffmpeg_build/lib/libavcodec.a(opusdec.o): in the function « opus_decode_init »:
/root/ffmpeg_sources/ffmpeg/libavcodec/opusdec.c:705: undefined reference to « swr_alloc »
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [shotdetect-cmd] Error 1
make[1]: *** [CMakeFiles/shotdetect-cmd.dir/all] Error 2
make: *** [all] Error 2I’ve done a lot of research about the above errors but I didn’t find any clue.
How to compile successfully Shotdetect on CentOS7 ?
Thanks to tryp here is a working CMakelist file :
# CMake integration by Christian Frisson
cmake_minimum_required(VERSION 2.8)
PROJECT(shotdetect)
SET(CMAKE_C_COMPILER "/usr/bin/clang")
SET(CMAKE_CXX_COMPILER "/usr/bin/clang++")
SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
# Get git version information for automatic embedding in version string:
include(GetGitRevisionDescription)
get_git_head_revision(GIT_REFSPEC GIT_SHA1)
# Take the first 12 characters of the SHA1 as short identifier:
STRING(SUBSTRING ${GIT_SHA1} 0 11 GIT_SHA1_SHORT)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/src/version.cc.in" "${CMAKE_CURRENT_BINARY_DIR}/version.cc" @ONLY)
list(APPEND SOURCES "${CMAKE_CURRENT_BINARY_DIR}/version.cc" src/version.h)
# Miscellaneous compilation options:
OPTION(USE_WXWIDGETS "Compile GUI app with wxWidgets, otherwise commandline app" ON)
OPTION(USE_POSTGRESQL "Compile with PostgreSQL support" OFF)
# Dependency: pkg-config (required if cross-compiling with MXE)
IF ( MINGW AND CMAKE_TOOLCHAIN_FILE)
FIND_PACKAGE (PkgConfig)
IF(NOT PKG_CONFIG_FOUND)
MESSAGE(FATAL_ERROR "pkgconfig required for cross-compiling with MXE for windows")
ENDIF()
SET(PKG_CONFIG_EXECUTABLE ${PKG_CONFIG_EXECUTABLE} CACHE STRING "pkg-config")
ENDIF()
# Dependency: FFmpeg (required)
FIND_PACKAGE( FFmpeg )
IF ( MINGW AND CMAKE_TOOLCHAIN_FILE)
PKG_CHECK_MODULES (FFMPEG_PKG REQUIRED libavcodec libavfilter libavutil libavdevice libavformat libavformat libswscale)
IF (FFMPEG_PKG_FOUND)
MESSAGE( "FFmpeg cflags found through pkg-config: ${FFMPEG_PKG_CFLAGS}" )
MESSAGE( "FFmpeg ldflags found through pkg-config: ${FFMPEG_PKG_LDFLAGS}" )
STRING(REGEX REPLACE ";" " " FFMPEG_PKG_CFLAGS "${FFMPEG_PKG_CFLAGS}")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FFMPEG_PKG_CFLAGS}")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FFMPEG_PKG_CFLAGS}")
SET(FFMPEG_LIBRARIES ${FFMPEG_LIBRARY} ${FFMPEG_PKG_LDFLAGS})
MESSAGE("FFMPEG_LIBRARIES ${FFMPEG_LIBRARIES}")
ELSE (FFMPEG_PKG_FOUND)
MESSAGE( FATAL_ERROR "FFmpeg cflags/ldflags not found through pkg-config." )
ENDIF (FFMPEG_PKG_FOUND)
ENDIF()
IF(FFMPEG_LIBAVFORMAT_FOUND)
MESSAGE(STATUS "avformat library found: ${FFMPEG_LIBAVFORMAT_LIBRARIES}")
ELSE()
MESSAGE(STATUS "avformat library not found.")
ENDIF()
IF(FFMPEG_LIBAVCODEC_FOUND)
MESSAGE(STATUS "avcodec library found: ${FFMPEG_LIBAVCODEC_LIBRARIES}")
ELSE()
MESSAGE(STATUS "avcodec library not found.")
ENDIF()
IF(FFMPEG_LIBAVUTIL_FOUND)
MESSAGE(STATUS "avutil library found: ${FFMPEG_LIBAVUTIL_LIBRARIES}")
ELSE()
MESSAGE(STATUS "avutil library not found.")
ENDIF()
IF(FFMPEG_LIBSWSCALE_FOUND)
MESSAGE(STATUS "swscale library found: ${FFMPEG_LIBSWSCALE_LIBRARIES}")
ELSE()
MESSAGE(STATUS "swscale library not found.")
ENDIF()
IF(FFMPEG_FOUND)
INCLUDE_DIRECTORIES(${FFMPEG_INCLUDE_DIR} ${FFMPEG_INCLUDE_DIRS})
SET(FFMPEG_LIBRARIES "${FFMPEG_LIBRARIES};/root/ffmpeg_build/lib/libswresample.a;/root/ffmpeg_build/lib/libx264.a;/lib64/libdl.so.2;/root/ffmpeg_build/lib/libfdk-aac.a;/root/ffmpeg_build/lib/libswresample.a")
MESSAGE("Found all FFmpeg libraries in ${FFMPEG_LIBRARIES}.")
ELSE()
MESSAGE(FATAL_ERROR "Some FFmpeg libraries are missing.")
ENDIF()
# Dependency: GD (required)
FIND_PACKAGE(GD REQUIRED)
IF ( MINGW AND CMAKE_TOOLCHAIN_FILE)
EXEC_PROGRAM(${CMAKE_FIND_ROOT_PATH}/bin/gdlib-config ARGS "--cflags" OUTPUT_VARIABLE GD_PKG_CFLAGS)
EXEC_PROGRAM(${CMAKE_FIND_ROOT_PATH}/bin/gdlib-config ARGS "--libs" OUTPUT_VARIABLE GD_PKG_LDFLAGS)
MESSAGE( "gd cflags found through gdlib-config: ${GD_PKG_CFLAGS}" )
MESSAGE( "gd ldflags found through gdlib-config: ${GD_PKG_LDFLAGS}" )
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GD_PKG_CFLAGS}")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GD_PKG_CFLAGS}")
SET(GD_LIBRARIES ${GD_LIBRARY} ${GD_PKG_LDFLAGS})
MESSAGE("GD_LIBRARIES ${GD_LIBRARIES}")
ENDIF()
IF(GD_FOUND)
INCLUDE_DIRECTORIES(${GD_INCLUDE_DIR})
MESSAGE("Found libgd: ${GD_LIBRARIES} in ${GD_INCLUDE_DIR}")
ELSE()
MESSAGE(FATAL_ERROR "Couldn't find libgd")
ENDIF()
# Dependency: libxml2 (required)
FIND_PACKAGE(LibXml2 2.7 REQUIRED)
IF ( MINGW AND CMAKE_TOOLCHAIN_FILE)
PKG_CHECK_MODULES (LIBXML2_PKG REQUIRED libxml-2.0)
IF (LIBXML2_PKG_FOUND)
MESSAGE( "LibXml2 cflags found through pkg-config: ${LIBXML2_PKG_CFLAGS}" )
MESSAGE( "LibXml2 ldflags found through pkg-config: ${LIBXML2_PKG_LDFLAGS}" )
STRING(REGEX REPLACE ";" " " LIBXML2_PKG_CFLAGS "${LIBXML2_PKG_CFLAGS}")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBXML2_PKG_CFLAGS}")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${LIBXML2_PKG_CFLAGS}")
SET(LIBXML2_LIBRARIES ${LIBXML2_LIBRARY} ${LIBXML2_PKG_LDFLAGS})
MESSAGE("LIBXML2_LIBRARIES ${LIBXML2_LIBRARIES}")
ELSE (LIBXML2_PKG_FOUND)
MESSAGE( FATAL_ERROR "LibXml2 cflags/ldflags not found through pkg-config." )
ENDIF (LIBXML2_PKG_FOUND)
ENDIF()
IF(LIBXML2_FOUND)
MESSAGE("Found libxml2: ${LIBXML2_LIBRARIES} in ${LIBXML2_INCLUDE_DIR}")
INCLUDE_DIRECTORIES(${LIBXML2_INCLUDE_DIR})
ELSE()
MESSAGE(FATAL_ERROR "Couldn't find libxml2")
ENDIF()
# Dependency: libxslt (required)
FIND_PACKAGE(LibXslt REQUIRED)
IF(LIBXSLT_FOUND)
MESSAGE("Found libxslt: ${LIBXSLT_LIBRARIES} in ${LIBXSLT_INCLUDE_DIR}")
INCLUDE_DIRECTORIES(${LIBXSLT_INCLUDE_DIR})
ELSE()
MESSAGE(FATAL_ERROR "Couldn't find libxslt")
ENDIF()
# Dependency: wxWidgets (optional)
IF(USE_WXWIDGETS)
FIND_PACKAGE(wxWidgets)# COMPONENTS core base)
IF(wxWidgets_FOUND)
MESSAGE("Found wxWidgets: ${wxWidgets_LIBRARIES} in ${wxWidgets_INCLUDE_DIRS}")
INCLUDE_DIRECTORIES(${wxWidgets_INCLUDE_DIRS})
ADD_DEFINITIONS(-DWXWIDGETS)
INCLUDE("${wxWidgets_USE_FILE}")
ELSE()
MESSAGE(FATAL_ERROR "Couldn't find wxWidgets. Set USE_WXWIDGETS to OFF or install wxWidgets.")
ENDIF()
ENDIF()
# Dependency: PostgreSQL (optional)
IF(USE_POSTGRESQL)
FIND_PACKAGE(PostgreSQL)
IF(PostgreSQL_FOUND)
MESSAGE("Found PostgreSQL: ${PostgreSQL_LIBRARIES} in ${PostgreSQL_INCLUDE_DIR}")
INCLUDE_DIRECTORIES(${PostgreSQL_INCLUDE_DIR})
ELSE()
MESSAGE(FATAL_ERROR "Couldn't find PostgreSQL. Set USE_POSTGRESQL to OFF or install PostgreSQL.")
ENDIF()
ENDIF()
# shotdetect
SET(TARGET_NAME "shotdetect")
INCLUDE_DIRECTORIES(.)
# shotdetect library
SET(${TARGET_NAME}_LIBRARY_SRCS src/film.cc src/graph.cc src/image.cc src/shot.cc src/xml.cc)
SET(${TARGET_NAME}_LIBRARY_HDRS src/film.h src/graph.h src/image.h src/shot.h src/xml.h)
IF(USE_POSTGRESQL)
SET(${TARGET_NAME}_LIBRARY_SRCS ${${TARGET_NAME}_LIBRARY_SRCS} src/bdd.cc)
SET(${TARGET_NAME}_LIBRARY_HDRS ${${TARGET_NAME}_LIBRARY_HDRS} src/bdd.h)
ENDIF()
ADD_LIBRARY(${TARGET_NAME} ${${TARGET_NAME}_LIBRARY_SRCS} ${${TARGET_NAME}_LIBRARY_HDRS})
TARGET_LINK_LIBRARIES(${TARGET_NAME} ${FFMPEG_LIBRARIES} ${LIBXML2_LIBRARIES} ${LIBXSLT_LIBRARIES} ${GD_LIBRARIES} "pthread" "m" "z")
IF(USE_WXWIDGETS AND wxWidgets_FOUND)
TARGET_LINK_LIBRARIES(${TARGET_NAME} ${wxWidgets_LIBRARIES})
ENDIF()
IF(USE_POSTGRESQL AND PostgreSQL_FOUND)
TARGET_LINK_LIBRARIES(${TARGET_NAME} ${PostgreSQL_LIBRARY})
ENDIF()
# shotdetect application: gui or commandline
IF(APPLE)
SET(APP_TYPE "MACOSX_BUNDLE")
ELSEIF(WIN32)
SET(APP_TYPE "WIN32")
ENDIF()
IF(USE_WXWIDGETS AND wxWidgets_FOUND)
LIST(APPEND ${TARGET_NAME}_GUI_SRCS src/main.cc src/ui/dialog_help.cc src/ui/dialog_shotdetect.cc src/ui/process_video_thread.cc)
LIST(APPEND ${TARGET_NAME}_GUI_HDRS src/ui/dialog_help.h src/ui/dialog_shotdetect.h src/ui/process_video_thread.h)
ADD_EXECUTABLE(${TARGET_NAME}-gui ${APP_TYPE} ${SOURCES} ${${TARGET_NAME}_GUI_SRCS} ${${TARGET_NAME}_GUI_HDRS})
TARGET_LINK_LIBRARIES(${TARGET_NAME}-gui ${TARGET_NAME})
# Make this target optional to install:
SET(TARGETS_TO_INSTALL ${TARGET_NAME}-gui)
ELSE()
LIST(APPEND ${TARGET_NAME}_COMMANDLINE_SRCS src/commandline.cc)
ADD_EXECUTABLE(${TARGET_NAME}-cmd ${SOURCES} ${${TARGET_NAME}_COMMANDLINE_SRCS})
TARGET_LINK_LIBRARIES(${TARGET_NAME}-cmd ${TARGET_NAME})
# Make this target optional to install:
SET(TARGETS_TO_INSTALL ${TARGET_NAME}-cmd)
ENDIF()
# Routines for installing shotdetect.
# Taken from official documentation (http://www.cmake.org/cmake/help/cmake2.6docs.html#command:install)
install(
TARGETS ${TARGETS_TO_INSTALL}
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib/static
)the built binary will be in the built directory, you can move there and execute
make install
to make the binary system wide.
-
-
How to convert mkv to mp4 in ffmpeg losslessly
16 novembre 2022, par crsswrdzI'm trying to losslessly convert an .mkv to .mp4.
(For use in Premiere Pro for film analysis and teaching).


When I do so, I get a noticeable drop in file size (11gb to 2gb) and image quality.
The 5.1 streams are maintained but lose their mapping (everything seems displaced i.e. center channel now in the right channel) and the subtitles are lost.


Is it possible to losslessly remux this .mkv to .mp4 ?
I don't want to re-encode it.


E:\>ffmpeg -i Dune.mkv Dune.mp4
ffmpeg version 2022-11-03-git-5ccd4d3060-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 57. 40.100 / 57. 40.100
 libavcodec 59. 51.101 / 59. 51.101
 libavformat 59. 34.101 / 59. 34.101
 libavdevice 59. 8.101 / 59. 8.101
 libavfilter 8. 49.101 / 8. 49.101
 libswscale 6. 8.112 / 6. 8.112
 libswresample 4. 9.100 / 4. 9.100
 libpostproc 56. 7.100 / 56. 7.100
Input #0, matroska,webm, from 'Dune.mkv':
 Metadata:
 title : Dune
 encoder : libebml v1.4.2 + libmatroska v1.6.4
 creation_time : 2021-10-17T11:10:41.000000Z
 Duration: 02:28:56.16, start: 0.000000, bitrate: 10192 kb/s
 Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709, progressive), 1920x776, SAR 1:1 DAR 240:97, 25 fps, 25 tbr, 1k tbn (default)
 Metadata:
 BPS : 9806853
 DURATION : 02:28:56.160000000
 NUMBER_OF_FRAMES: 223404
 NUMBER_OF_BYTES : 10954451639
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s (default)
 Metadata:
 BPS : 384000
 DURATION : 02:28:56.128000000
 NUMBER_OF_FRAMES: 279254
 NUMBER_OF_BYTES : 428934144
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream #0:2(eng): Subtitle: subrip (forced)
 Metadata:
 title : FORCED
 BPS : 1
 DURATION : 01:49:04.860000000
 NUMBER_OF_FRAMES: 43
 NUMBER_OF_BYTES : 1104
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 Stream #0:3(eng): Subtitle: subrip (default)
 Metadata:
 BPS : 34
 DURATION : 02:20:49.064000000
 NUMBER_OF_FRAMES: 998
 NUMBER_OF_BYTES : 36676
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Stream #0:1 -> #0:1 (ac3 (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0000016e39c4a7c0] Using a PCE to encode channel layout "5.1(side)"
[libx264 @ 0000016e396ded40] using SAR=1/1
[libx264 @ 0000016e396ded40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000016e396ded40] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000016e396ded40] 264 - core 164 r3101 b093bbe - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'Dune.mp4':
 Metadata:
 title : Dune
 encoder : Lavf59.34.101
 Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x776 [SAR 1:1 DAR 240:97], q=2-31, 25 fps, 12800 tbn (default)
 Metadata:
 BPS : 9806853
 DURATION : 02:28:56.160000000
 NUMBER_OF_FRAMES: 223404
 NUMBER_OF_BYTES : 10954451639
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 encoder : Lavc59.51.101 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1(side), fltp, 394 kb/s (default)
 Metadata:
 BPS : 384000
 DURATION : 02:28:56.128000000
 NUMBER_OF_FRAMES: 279254
 NUMBER_OF_BYTES : 428934144
 _STATISTICS_WRITING_APP: mkvmerge v62.0.0.1 ('Apollo') 64-bit
 _STATISTICS_WRITING_DATE_UTC: 2021-10-17 11:10:41
 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
 encoder : Lavc59.51.101 aac
frame=115222 fps=216 q=28.0 00000000000000000000000004009000size= 1180416kB time=01:16:52.41 bitrate=2096.5kbits/s speed=8.65x