How Can I Execute Piped Commands (e.g., phantomjs | ffmpeg) in Golang?

Executing Piped Commands in Golang using exec.Command

The question arises from the need to seamlessly execute a lengthy piped command involving phantomjs and ffmpeg within a Golang program. The original command, directly run in the terminal, works flawlessly. However, recreating the same operation using the os/exec package proves challenging.

The provided solution revolves around utilizing the exec.Command function to initiate the desired command. However, this initial approach fails to account for the pipe delimiter, rendering it ineffective.

To address this limitation, the modified solution employs a more comprehensive approach by invoking a shell interpreter to handle the command. In this case, the Bash shell is invoked using bash, while the actual command is encapsulated within -c as its argument. This technique empowers the shell to interpret the command and execute it accurately, respecting the pipe delimiter.

The resulting code seamlessly executes the piped command and captures any stdout output, which can then be utilized within your Golang program. This approach eliminates the need to write intermediate image files, streamlining the process and ensuring optimal performance.

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