--- mp42mp3.bat & webm2mp3.bat ---
@echo off
ffmpeg -i "%~f1" "%~n1.mp3"
---

&

--- gif2mp4.bat ---
@echo off
ffmpeg -i "%~f1" -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -c:v libx264 -c:a aac -strict experimental -loglevel error -max_muxing_queue_size 1024 "%~n1.mp4"
---

&

--- gif2webm.bat ---
@echo off
ffmpeg -i "%~f1" -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -c:v libvpx -b:v 1M -c:a libvorbis "%~n1.webm"
---

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