ffmpeg -i '/var/www/laloee-cours.fr/social-media-generator/uploads/clipmaker/sequences/R_MAR_SEQ_001.mp4' -i '/var/www/laloee-cours.fr/social-media-generator/uploads/clipmaker/sequences/R_MAR_SEQ_001.mp4' -filter_complex "[0:v][0:a][1:v][1:a]concat=n=2:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" -c:v libx264 -preset medium -crf 23 -c:a aac -b:a 128k -movflags +faststart -y '/var/www/laloee-cours.fr/social-media-generator/uploads/clipmaker/exports/Project_1_2025-07-19_09-02-04.mp4' 2>&1