Is there a way during the ffmpeg compression process to determine over various intervals the exact filesize that a video is at?
Such as a method to get current filesize during the process to use when comparing against the videos original filesize.
For example, a potential video being transcoded takes 5 minutes, but during the process, a function will check the file size on intervals of 100 frames or every 5 seconds to ensure that the filesize hasn't exceeded the original. If it has, it will kill the process with command.kill('SIGSTOP');
const transcodeVideo = () => {
return new Promise((resolve, reject) => {
ffmpeg("./video.mp4")
.setFfprobePath(pathToFfprobe.path)
.setFfmpegPath(pathToFfmpeg)
.videoCodec("libx264")
.audioCodec("libmp3lame")
.size("720x?")
.on("error", (err) => {
console.log(err);
})
.on("end", () => {
//irrelevant resolving code in here
})
.save("./transVideo.mp4");
});
};
transcodeVideo();You can use the targetSize property from the "progress" event to get the current size of the target file:
let command = ffmpeg
// ...
.on("progress", progress => {
if (progress.targetSize > originalSize) {
command.kill();
}
});
To get the original size, you can use the standard functions in Node's fs library, e.g. fs.stat.