Troubleshooting of FFmpeg: Difference between revisions
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(Created page with "Troubleshooting of FFmpeg issues {{Draft}} == File Overwrite Issue When Integrating FFmpeg with PHP == '''Error condition''': When integrating FFmpeg commands with PHP scripts, if the output file already exists, FFmpeg displays an overwrite confirmation prompt. However, this prompt is not visible in the PHP execution environment. This causes the PHP script to pause, waiting for user input, without any visible prompt. Original command: <pre> ffmpeg -i input.mp4 -vf sc...") |
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Revision as of 12:30, 7 April 2025
Troubleshooting of FFmpeg issues
 This article "Troubleshooting of FFmpeg" is still being written. If there are any incomplete parts, you are welcome to directly edit them. 這篇文章「Troubleshooting of FFmpeg」內容還在撰寫中，如果有不完整的部分，歡迎你直接動手修改。
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File Overwrite Issue When Integrating FFmpeg with PHP
Error condition: When integrating FFmpeg commands with PHP scripts, if the output file already exists, FFmpeg displays an overwrite confirmation prompt. However, this prompt is not visible in the PHP execution environment. This causes the PHP script to pause, waiting for user input, without any visible prompt.
Original command:
ffmpeg -i input.mp4 -vf scale=720:404 -c:v libx264 -crf 23 -preset fast -c:a aac -b:a 128k output.mp4
Prompt in terminal environment:
File 'output.mp4' already exists. Overwrite? [y/N]
Solution: Add parameters to the FFmpeg command to control file overwrite behavior:
First option: Auto-overwrite option:
ffmpeg -y -i input.mp4 -vf scale=720:404 -c:v libx264 -crf 23 -preset fast -c:a aac -b:a 128k output.mp4
Second option: Skip if file exists option:
ffmpeg -n -i input.mp4 -vf scale=720:404 -c:v libx264 -crf 23 -preset fast -c:a aac -b:a 128k output.mp4
Or implement the file overwrite control directly in your PHP script logic.