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打开输出流#0:0的编码器时淡入视频错误 - 可能是错误的参数,如bit_rate,rate,width或height

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我正在使用下面的命令将Fade In Fade Out效果添加到我的视频中

{"-y", "-ss", "" + startMs / 1000, "-t", "" + (endMs - startMs) / 1000, "-i", inputPath, "-acodec", "copy", "-vf", "fade=t=in:st=0:d=5,fade=t=out:st=" + String.valueOf((endMs - startMs) / 1000 - 5) + ":d=5", outputPath};

我收到以下错误 -

“Failure3.3 5 .3gpffmpeg版本n3.0.1版权所有(c)2000-2016 FFmpeg开发人员\ n使用gcc 4.8(GCC)构建\ n配置: - target-os = linux --cross-prefix = / home / vagrant / SourceCode / ffmpeg-android / toolchain-android / bin / arm-linux-androideabi- -arch = arm --cpu = cortex-a8 --enable-runtime-cpudetect --sysroot = / home / vagrant / SourceCode / ffmpeg-android / toolchain-android / sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable -ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable -shared --enable-static --pkg-config = / home / vagrant / SourceCode / ffmpeg-android / ffmpeg-pkg-config --prefix = / home / vagrant / SourceCode / ffmpeg-android / build / armeabi-v7a - -extra-cflags =' - I / home / vagrant / SourceCode / ffmpeg-android / toolchain-android / include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE = 2 -fno-strict-overflow -fstac k-protector-all'-extra-ldflags =' - L / home / vagrant / SourceCode / ffmpeg-android / toolchain-android / lib -Wl,-z,relro -Wl,-z,now -pie' - extra-libs =' - lpng -lexpat -lm'-- extra-cxxflags = \ n libavutil 55. 17.103 / 55. 17.103 \ n libavcodec 57. 24.102 / 57. 24.102 \ n libavformat 57. 25.100 / 57. 25.100 \ n libavdevice 57. 0.101 / 57. 0.101 \ n libavfilter 6. 31.100 / 6. 31.100 \ n libswscale 4. 0.100 / 4. 0.100 \ n libswresample 2. 0.101 / 2. 0.101 \ n libpostproc 54. 0.100 / 54. 0.100 \ nInput #0,mov,mp4,m4a,3gp,3g2,mj2,来自'/storage/emulated/0/DCIM/Camera/VID_20180825_071734915.3gp':\ n元数据:\ n major_brand:3gp4 \ n minor_version:0 \ n compatible_brands :isom3gp4 \ n creation_time:2018-08-25 01:47:47 \ n com.android.version:8.0.0 \ n持续时间:00:00:10.83,开始:0.000000,比特率:17217 kb / s \ n流#0:0(eng):视频:h264(高)(avc1 / 0x31637661),yuv420p(tv,unknown / bt470bg / unknown),1920x1080,16756 kb / s,SAR 1:1 DAR 16:9,29.49 fps, 29.58 tbr,90k tbn,180k tbc(默认)\ n元数据:\ n rotate:90 \ nc reation_time:2018-08-25 01:47:47 \ n handler_name:VideoHandle \ n边数据:\ n displaymatrix:旋转-90.00度\ n流#0:1(eng):音频:aac(LC)(mp4a / 0x6134706D),48000 Hz,mono,fltp,128 kb / s(默认)\ n元数据:\ n creation_time:2018-08-25 01:47:47 \ n handler_name:SoundHandle \ n [h263 @ 0xf49ff400] H. 263不支持2048x1152以上的分辨率\ n输出#0,3gp到'/storage/emulated/0/Movies/fade_video.3gp':\ n元数据:\ n major_brand:3gp4 \ n minor_version:0 \ n compatible_brands:isom3gp4 \ n com.android.version:8.0.0 \ n流#0:0(eng):视频:h263,无,q = 2-31,128 kb / s,SAR 1:1 DAR 0:0,29.58 fps(默认)\ n元数据:\ n handler_name:VideoHandle \ n creation_time:2018-08-25 01:47:47 \ n编码器:Lavc57.24.102 h263 \ n流#0:1(eng):音频:aac(LC) (mp4a / 0x6134706D),48000 Hz,单声道,128 kb / s(默认)\ n元数据:\ n creation_time:2018-08-25 01:47:47 \ n handler_name:SoundHandle \ nStream映射:\ n Stream#0 :0 - >#0:0(h264(原生) - > h263(原生))\ n Stre am#0:1 - >#0:1(复制)\ n打开输出流编码器时的错误#0:0 - 可能是不正确的参数,如bit_rate,rate,width或height \ n“

为什么在上面的命令中导致这个错误?欢迎任何帮助 .

1 回答

  • 1

    正如日志所说,H.263不支持2048x1152以上的分辨率 . 您的源流是1920x1080,但旋转90度,因此ffmpeg自动旋转到1080x1920,不符合限制 . 您可以在淡入淡出后添加缩放滤镜以有条件地缩小尺寸 .

    scale='if(lte(iw,2048)*lte(ih,1152),iw,if(gt(dar,2048/1152),2048,2*trunc(oh*dar/2)))':'if(lte(iw,2048)*lte(ih,1152),ih,if(gt(dar,2048/1152),2*trunc(ow/dar/2),1152))'

    x和y exprs的作用是首先检查输入是否大于2048x1152 . 如果不是,请保持原始分辨率 . 如果是,请检查输入的显示比例 . 如果大于2048:1152,将宽度缩小到2048并按比例调整高度,否则将高度缩小到1152并按比例调整宽度 . dar 代表显示宽高比 .

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