#!/bin/bash
cat "$1" | ffmpeg \
    -vsync cfr \
    -c:v rawvideo\
    -top:v 1 \
    -video_size 640x360 \
    -pixel_format yuv420p \
    -f rawvideo \
    -fflags nobuffer \
    -i - \
    -c:a pcm_s16le \
    -ac 2 \
    -ar 55296000 \
    -f s16le \
    -fflags nobuffer \
    -analyzeduration 0 \
    -i - \
    -c:v libx264 \
    -thread_type:v slice+frame \
    -map 0:0,1:0 \
    -map 1:0 \
    -loglevel info \
    -vf "scale=1280:720" \
    -af "aresample=async=1" \
    -profile:v main \
    -preset:v faster \
    -tune zerolatency \
    -g 60 \
    -x264opts level=3.1:bitrate=1000:vbv-bufsize=2000:vbv-maxrate=1000 \
    -strict -2 \
    -acodec aac \
    -ab 192000 \
    -ac 2 \
    -ar 44100 \
    -r 30 out.mp4