Alexei Kouprianov @ LJ | History of Taxonomy | Entomology

The best solution ever:

https://devforum.zoom.us/t/how-to-convert-local-recording-zoom-files-into-mp4-m4a-and-m3u/1324/28

TrueIslandNobility
May '20

To anyone on a MAC here is what happened to me…

My first EVER zoom meeting recording and it error’d out and I was stuck with the “.zoom” files and couldn’t get it to recognize my scheduled recording in the app. I needed it to convert and followed the guidance to upload to my Google Drive and then contact support. They told me that due to the current situation, their support is overwhelmed and could not convert it for me.

I really needed the video file and I am going to edit it in Premier anyways so I just need it converted, no real metadata needs to come along with it. So I just tried my hand at this:

1.) Take the “.zoom” files and copied them
2.) Open Zoom and START a new recording
3.) Pause the recording
4.) Go to the LOCAL directory where the recordings are being saved as “.zoom” files
5.) Pasted the OLD “.zoom” files that I needed converted over the top of the newly created ones
6.) Without UNPAUSING the recording, STOP the recording and then end the call
7.) Zoom will start to convert the old files
8.) DONE

Once it was converted, all video and sound was there and I got my one hour video converted.

Not sure if that helps anyone and have not tested this on a WIN machine.

То, что они оба одной длины, это так случайно получилось после отсмотра.

ffmpeg -i DSC_0748.MOV -ss 00:00:00 -t 00:00:24 -c:v copy -c:a copy DSC_0748.cut.MOV
ffmpeg -i DSC_0749.MOV -ss 00:00:00 -t 00:00:24 -c:v copy -c:a copy DSC_0749.cut.MOV

Затем создается файл, скажем, combine со списком сливаемых файлов в виде:

file ./DSC_0748.cut.MOV
file ./DSC_0749.cut.MOV

Затем:

ffmpeg -safe 0 -f concat -i combine -vcodec copy -acodec copy merged.MOV

$ ./words
./words: error while loading shared libraries: libgcc_s.so.1: wrong ELF class: ELFCLASS64

$ readelf -d ./words

Dynamic section at offset 0xa95a0 contains 21 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libgcc_s.so.1]
 0x00000001 (NEEDED)                     Shared library: [libc.so.6]
 0x0000000c (INIT)                       0x8049530
 0x0000000d (FINI)                       0x80cd710
 0x00000004 (HASH)                       0x8048168
 0x00000005 (STRTAB)                     0x8048ba0
 0x00000006 (SYMTAB)                     0x80484b0
 0x0000000a (STRSZ)                      1282 (bytes)
 0x0000000b (SYMENT)                     16 (bytes)
 0x00000015 (DEBUG)                      0x0
 0x00000003 (PLTGOT)                     0x80f26d8
 0x00000002 (PLTRELSZ)                   656 (bytes)
 0x00000014 (PLTREL)                     REL
 0x00000017 (JMPREL)                     0x80492a0
 0x00000011 (REL)                        0x80491d0
 0x00000012 (RELSZ)                      208 (bytes)
 0x00000013 (RELENT)                     8 (bytes)
 0x6ffffffe (VERNEED)                    0x8049180
 0x6fffffff (VERNEEDNUM)                 2
 0x6ffffff0 (VERSYM)                     0x80490a2
 0x00000000 (NULL)                       0x0

$ sudo apt install libc.so.6
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libc.so.6

$ sudo apt install libgcc_s.so.1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libgcc_s.so.1

$ sudo apt-get install gcc-multilib

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <PUBKEY>

sudo apt-get update

sudo gpg --keyserver pgpkeys.mit.edu --recv-key  
sudo gpg -a --export  | sudo apt-key add -
sudo apt-get update

sudo snap install skype --classic

Надо было извлечь ряд страниц подряд из PDF. Раньше использовал для этого печать в файл из штатного GUI viewer'а (которая на этот раз не могла правильно обработать некоторые страницы, добавляя к ним белое поле) или pdftk. Pdftk однако в новых версиях Ubuntu прибили. Некоторое время назад нашел было замену -- qpdf. Так вот, на этой простейшей задаче чуть голову не сломал. Оказывается, зачем-то надо писать имя входного файла дважды. Да, версия qpdf, которая в Ubuntu 18.04 вставлена, -- 8.0.2 (это значит, что использование точки в качестве заместителя ранее упомянутого имени файла, рекламируемое на Sourceforge, в ней еще не появилось, но, вообще-то, все остальное -- как у людей).

qpdf infile.pdf --pages infile.pdf 1-22 -- outfile.pdf

В общем, при pdftk такого не было...

# QGIS 3 install
deb https://qgis.org/ubuntugis/ bionic main
deb-src https://qgis.org/ubuntugis/ bionic main

configure: error: in `/home/tinea/Downloads/medit-1.2.0':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details

sudo apt-get install build-essential

configure: error: The intltool scripts were not found. Please install intltool or use --disable-nls to ignore.

sudo apt-get install intltool

configure: error: in `/home/tinea/Downloads/medit-1.2.0':
configure: error: The pkg-config script could not be found or is too old.  Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.

Alternatively, you may set the environment variables GTK_CFLAGS
and GTK_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

To get pkg-config, see <http://pkg-config.freedesktop.org/>.
See `config.log' for more details

sudo apt-get install pkg-config

configure: error: Package requirements (gtk+-2.0) were not met:

No package 'gtk+-2.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables GTK_CFLAGS
and GTK_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

sudo apt-get install libgtk2.0-dev

configure: error: Package requirements (libxml-2.0) were not met:

No package 'libxml-2.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables XML_CFLAGS
and XML_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.

sudo apt-get install libxml2-dev

sudo photorec

identify -format '%[colorspace]' image.tiff

identify -format '%[colorspace]\n' *.tiff

identify -verbose image.tiff | grep Colorspace