LZMA | 7zip压缩官方的java sdk简单修改使用。 | Compression library

Your file seems to be missing some color information:

I found out it has been resolved in

https://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=a74428921f8bfb33cbe0340bfd810b6945e432d2#patch1

and it works fine in ffmpeg 5.0. You can also apply this patch to 4.4.

The forfiles command is a nasty beast, because there are several caveats:

• it is slow (particularly because it cannot run internal commands of the hosting command prompt);
• it handles wildcards differently than most other commands, hence /M *.* does not match all files but only such with an extension; to really match all files, use /M * or skip it since it is the default anyway;
• it applies backslash-escaping, which is particularly annoying with paths ending in \, like the root directory of a drive /P "D:\", which causes a syntax error since the closing quotation mark is considered as escaped; to work around that, preferably append a . like /P "D:\.", or remove the quotation marks like /P D:\, though this exposes potential whitespaces or special characters to the parser;
• all of the special @-variables that return the path and/or name of iterated items provide the values in quoted manner, which is particularly frustrating when it comes to concatenation;
• it iterates over both files and directories that match the given mask; to distinguish between them you could use the special @isdir variable, but you will need an if statement for this (like if @isdir==FALSE or if @isdir==TRUE), which is an internal cmd.exe command, requiring its explicit instantiation even when you would not need it else;
• handling of the command behind /C and its arguments is terribly implemented, leading to the problem that directly running external commands (so without cmd /C) may fail, unless you are aware of the mostly working fix by stating the command name twice (like /C "command.exe command.exe --parameter argument");
• even its basically nice /D option (which is the only reason why forfiles might suit better than for) to filter for the relative last modification date (but not time) is badly implemented when a positive number (like /D +1) is used, because this uselessly points to the future;

All of these issues lead me to the point that I suggest not to use forfiles and to use a standard for loop instead, like this (note also the changed mask *.flac):

• In a batch-file:

As you can see in strace, the execve command executes as: execve("/bin//nc", ["/bin//nc", "/bin//nc-e //bin/bash -nvlp 4455"], NULL) = 0 It seems to be taking the whole /bin//nc-e //bin/bash -nvlp 4455 as a single argument and thus thinks it's a hostname. In order to get around that, the three argv[] needed for execve() is pushed seperately. argv[]=["/bin/nc", "-e/bin/bash", "-nvlp4455"] These arguments are each pushed into edx, ecx, and ebx. since ebx needs to be /bin/nc, which was already done in the original code. we just needed to push 2nd and 3rd argv[] into ecx and edx and push it into stack. After that we just copy the whole stack into ecx, and then xor edx,edx to set edx as NULL.

Here is the correct solution:

For H.264, nvenc has a max. resolution limit of 4096x4096. Use a software encoder like libx264. But note that a resolution of 7200x3600 is beyond the limit of any valid H.264 level so hope your target player doesn't care. Or use HEVC with different parameters.

The "current working directory" of the Node process is important when using exec as it defaults to process.cwd()

The two commands:

Right-click your transparent .mov video on your Mac. Services -> Encode Selected Video Files -> set Apple ProRes -> tick Preserve Transparency -> Continue. Then run your command ffmpeg -i sprite/video.mov -r 24/1 sprite/output%03d.png. That will generate transparent pngs.

You forgot a ". Try:

Recompile rpy2 locally, with a linker flag to explicate which R library to link to.

Inspired by the blog post https://thomas-cokelaer.info/blog/2012/01/installing-rpy2-with-different-r-version-already-installed/ I decided to recompile rpy2 from source, and supply the R path as an environment variable to the compilation.