我实际上使用此命令在视频上叠加文字，但它无效。
String[] cmd = new String[]{ "-i", path.mp4, "-vf", "drawtext=fontfile=/home/mobihouse/hemanth-work-files/TwoTHumbSeekbarTest/app/src/main/assets/loto.ttf: text=hello","-preset", "-strict", destinationpath.mp4};
执行此命令时，我正面临：
08-03 14:42:28.133 32021-32021/test.mobihouse.twothumbseekbartest I/Choreographer: Skipped 1325 frames! The application may be doing too much work on its main thread.
[ 08-03 14:42:28.167 32021:32021 D/ ]
onProgressffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
[ 08-03 14:42:28.167 32021:32021 D/ ]
onProgress built with gcc 4.8 (GCC)
[ 08-03 14:42:28.169 32021:32021 D/ ]
onProgress configuration: --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 -fstack-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=
[ 08-03 14:42:28.170 32021:32021 D/ ]
onProgress libavutil 55. 17.103 / 55. 17.103
[ 08-03 14:42:28.170 32021:32021 D/ ]
onProgress libavcodec 57. 24.102 / 57. 24.102
[ 08-03 14:42:28.171 32021:32021 D/ ]
onProgress libavformat 57. 25.100 / 57. 25.100
[ 08-03 14:42:28.172 32021:32021 D/ ]
onProgress libavdevice 57. 0.101 / 57. 0.101
[ 08-03 14:42:28.172 32021:32021 D/ ]
onProgress libavfilter 6. 31.100 / 6. 31.100
[ 08-03 14:42:28.176 32021:32021 D/ ]
onProgress libswscale 4. 0.100 / 4. 0.100
[ 08-03 14:42:28.176 32021:32021 D/ ]
onProgress libswresample 2. 0.101 / 2. 0.101
[ 08-03 14:42:28.176 32021:32021 D/ ]
onProgress libpostproc 54. 0.100 / 54. 0.100
[ 08-03 14:42:28.216 32021:32021 D/ ]
onProgressInput #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Sample2.mp4':
[ 08-03 14:42:28.217 32021:32021 D/ ]
onProgress Metadata:
[ 08-03 14:42:28.218 32021:32021 D/ ]
onProgress major_brand : isom
[ 08-03 14:42:28.219 32021:32021 D/ ]
onProgress minor_version : 512
[ 08-03 14:42:28.219 32021:32021 D/ ]
onProgress compatible_brands: isomiso2avc1mp41
[ 08-03 14:42:28.220 32021:32021 D/ ]
onProgress encoder : Lavf57.25.100
[ 08-03 14:42:28.221 32021:32021 D/ ]
onProgress Duration: 00:01:06.52, start: 0.023220, bitrate: 2357 kb/s
[ 08-03 14:42:28.222 32021:32021 D/ ]
onProgress Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 1:1 DAR 3:2], 2275 kb/s, 12 fps, 12 tbr, 12288 tbn, 24 tbc (default)
[ 08-03 14:42:28.223 32021:32021 D/ ]
onProgress Metadata:
[ 08-03 14:42:28.228 32021:32021 D/ ]
onProgress handler_name : VideoHandler
[ 08-03 14:42:28.229 32021:32021 D/ ]
onProgress Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
[ 08-03 14:42:28.229 32021:32021 D/ ]
onProgress Metadata:
[ 08-03 14:42:28.229 32021:32021 D/ ]
onProgress handler_name : SoundHandler
[ 08-03 14:42:28.231 32021:32021 D/ ]
onProgressFontconfig error: Cannot load default config file
[ 08-03 14:42:28.232 32021:32021 D/ ]
onProgress[Parsed_drawtext_0 @ 0xadd991e0] impossible to init fontconfig
[ 08-03 14:42:28.234 32021:32021 D/ ]
onProgress[AVFilterGraph @ 0xadd8b080] Error initializing filter 'drawtext' with args 'Pthof ttf file: text=hello'
[ 08-03 14:42:28.235 32021:32021 D/ ]
onProgressError opening filters!
[ 08-03 14:42:28.239 32021:32021 D/ ]
onFailureffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --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 -fstack-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=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Sample2.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.25.100
Duration: 00:01:06.52, start: 0.023220, bitrate: 2357 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 1:1 DAR 3:2], 2275 kb/s, 12 fps, 12 tbr, 12288 tbn, 24 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
Metadata:
handler_name : SoundHandler
Fontconfig error: Cannot load default config file
[Parsed_drawtext_0 @ 0xadd991e0] impossible to init fontconfig
[AVFilterGraph @ 0xadd8b080] Error initializing filter 'drawtext' with args 'Pthof ttf file: text=hello'
Error opening filters!
08-03 14:42:32.653 32021-32026/test.mobihouse.twothumbseekbartest I/art: Do partial code cache collection, code=50KB, data=62KB
08-03 14:42:32.654 32021-32026/test.mobihouse.twothumbseekbartest I/art: After code cache collection, code=50KB, data=62KB
08-03 14:42:32.654 32021-32026/test.mobihouse.twothumbseekbartest I/art: Increasing code cache capacity to 256KB
答案 0 :(得分：0)
Android 设备上的字体存储在“/system/fonts/Roboto-Regular.ttf”。所以命令看起来像这样。这在 Android 设备上对我有用。
val subtitlecommand = arrayOf(
"-y",
"-i",
videoPath,
"-vf",
"drawtext=fontfile=/system/fonts/Roboto-Regular.ttf:text='Super User':x=(w-text_w)/2:y=(h-text_h)/2:fontsize=24:fontcolor=white",
"-c:a",
"copy",
appDir
)