使用ffmpeg和xfade滤镜合并多个视频文件

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ffmpeg \
-i v0.mp4 \
-i v1.mp4 \
-i v2.mp4 \
-i v3.mp4 \
-i v4.mp4 \
-filter_complex \
"[0][1]xfade=transition=fade:duration=0.5:offset=3.5[V01]; \
 [V01][2]xfade=transition=fade:duration=0.5:offset=32.75[V02]; \
 [V02][3]xfade=transition=fade:duration=0.5:offset=67.75[V03]; \
 [V03][4]xfade=transition=fade:duration=0.5:offset=98.75[video]; \
 [0:a][1:a]acrossfade=d=0.5:c1=tri:c2=tri[A01]; \
 [A01][2:a]acrossfade=d=0.5:c1=tri:c2=tri[A02]; \
 [A02][3:a]acrossfade=d=0.5:c1=tri:c2=tri[A03]; \
 [A03][4:a]acrossfade=d=0.5:c1=tri:c2=tri[audio]" \
-vsync 0 -map "[video]" -map "[audio]" out.mp4

# Prepare the filter graph
video_fades = ""
audio_fades = ""
last_fade_output = "0:v"
last_audio_output = "0:a"
video_length = 0
for i in range(len(segments) - 1):
    # Video graph: chain the xfade operator together
    video_length += file_lengths[i]
    next_fade_output = "v%d%d" % (i, i + 1)
    video_fades += "[%s][%d:v]xfade=duration=0.5:offset=%.3f[%s]; " % \
        (last_fade_output, i + 1, video_length - 1, next_fade_output)
    last_fade_output = next_fade_output
    # Audio graph:
    next_audio_output = "a%d%d" % (i, i + 1)
    audio_fades += "[%s][%d:a]acrossfade=d=1[%s]%s " % \
        (last_audio_output, i + 1, next_audio_output, ";" if (i+1) < len(segments)-1 else "")
    last_audio_output = next_audio_output

[0:v][1:v]xfade=duration=0.5:offset=42.511[v01]; 
[v01][2:v]xfade=duration=0.5:offset=908.517[v12]; 
[v12][3:v]xfade=duration=0.5:offset=1098.523[v23]; 
[v23][4:v]xfade=duration=0.5:offset=1234.523[v34]; 
[v34][5:v]xfade=duration=0.5:offset=2375.523[v45]; 
[v45][6:v]xfade=duration=0.5:offset=2472.526[v56]; 
[v56][7:v]xfade=duration=0.5:offset=2659.693[v67]; 
[0:a][1:a]acrossfade=d=1[a01];

使用ffmpeg和xfade滤镜合并多个视频文件 内容来源于 Stack Overflow，遵循 CC BY-SA 4.0 许可协议进行翻译与使用。IT领域专用引擎提供翻译支持 腾讯云小微IT领域专用引擎提供翻译支持

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