How to set exec args make it faster??[WEB]

[nenge123]

{method: 'progress', progress: 0.06321697043031083, time: 835918}

{method: 'progress', progress: 1, time: 13235374}

'0.ts' is only 13s size 3.44MB

        this.upload(async files=>{
            const worker = new MyWorker({url:self.jspath+'Worker/WorkerAppFFmpeg.js',type:'module',install:true});
            worker.methods.set('log',function(data,port){
                console.log(data.message);
            });
            worker.methods.set('wasmload',function(data,port){
                console.log(data);
            });
            worker.methods.set('progress',function(data,port){
                console.log(data);
            });
            await worker.setMethod();
            await worker.ready;
            await worker.callMethod('writeFile','0.ts',files[0]);
            await worker.callMethod('exec',['-i','0.ts','0.mp4'],-1);
            const file = await worker.callMethod('readFile','0.mp4');
            worker.terminate();
            this.downURL(URL.createObjectURL(new Blob([file])),'0.mp4');
        });

otherfile.zip

[nenge123]

['-i','0.ts', '-preset','ultrafast','0.mp4']