Render Image + Audio (Zoom 1/2)

ffmpeg -i bground.mp4 -i input.mp4 -filter_complex "nullsrc=size=1280x720 [vmain]; [0:v] setpts=PTS-STARTPTS, scale=1280:720 [vback]; [1:v] setpts=PTS-STARTPTS, scale=640:468 [video]; [vmain][vback] overlay=shortest=1 [vid]; [vid][video] overlay=shortest=0:x=320:y=180 [vout]; [1:a] aformat=sample_fmts=fltp:sample_rates=44100:channel_layouts=stereo, volume=1.5, atempo = 1.01, aecho=0.8:0.88:6:0.4,compand=.3|.3:1|1:-90/-60|-60/-40|-40/-30|-20/-20:6:0:-90:0.2, equalizer = f = 1000: width_type = q: width = 1: g = 2, equalizer = f = 100: width_type = q: width = 2: g = -5, chorus=0.2:0.4:20|20:0.4|0.12:0.12|0.4:2|1.2 [aout]" -map "[vout]" -map "[aout]" -async 1 -copyts -start_at_zero -b:a 128k -vcodec libx264 -profile:v high -level 4.0 -coder 1 -refs 3 -preset ultrafast -b:v 1500k -minrate 1500k -maxrate 1500k -bufsize 0k outinput.mp4 ffmpeg -i outinput.mp4 -vf "zoompan=z='min(max(zoom,pzoom)+0.0015,2)':d=1:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)'" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1500k -c:a copy -metadata title="" -metadata artist="" -metadata album_artist="" -metadata album="" -metadata date="" -metadata track="" -metadata genre="" -metadata publisher="" -metadata encoded_by="" -metadata copyright="" -metadata composer="" -metadata performer="" -metadata TIT1="" -metadata TIT3="" -metadata disc="" -metadata TKEY="" -metadata TBPM="" -metadata language="eng" -metadata encoder="" -preset superfast output.mp4