我有 2 个 ffmpeg 命令单独工作正常
ffmpeg -i test_video.mp4 -vcodec libx264 -filter_complex "drawtext=fontfile=test.ttf:text=awesome:fontcolor=white:fontsize=20:x=0:y=10+th" test_video_text.mp4 -y
和
ffmpeg -i test_video.mp4 -vcodec libx264 -filter_complex "volume=0" test_video_text.mp4 -y
当将这些命令合并为
ffmpeg -i test_video.mp4 -vcodec libx264 -filter_complex "drawtext=fontfile=Lato-Light.ttf:text=awesome:fontcolor=white:fontsize=20:x=0:y=10+th,volume=0" test_video_text.mp4 -y
收到以下错误：
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test_video.mp4':
Metadata:
major_brand : mp42
minor_version : 1
compatible_brands: mp41mp42isom
creation_time : 2015-09-24 18:32:33
Duration: 00:00:09.87, start: 0.068254, bitrate: 235 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x320, 183 kb/s, 29.67 fps, 29.67 tbr, 29673 tbn, 59.35 …