我花了几个小时研究，但仍然有问题...... 我想将 .mkv 文件转换为带有水印和字幕的 .mp4（来自 mkv）。
我尝试了几个命令，但总是错误或成功，带有水印没有字幕。 以下是我尝试过的一些命令（不是全部）：
部分成功 - 有些文件转换为带字幕，但我有 153 个文件转换为不带字幕...（都是从 .mkv 到 .mp4）：
ffmpeg -i 025.mkv -vf "movie=logovideo2.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10,subtitles=025.mkv [out]" 25.mp4
ffmpeg -i 001.mkv -i logovideo2.png -filter_complex "[0:v][1:v]overlay=0:0,subtitles=001.mkv[out]" -map "[out]" -map 0:a -c:s ass 001.mp4
失败 - 命令有错误：
ffmpeg -i 001.mkv -i logovideo2.png -filter_complex "[0:v][1:v]overlay=0:0[out]" -map "[out]" -map 0:a -map 0:s -c:s ass 001.mp4
代码（有错误）：
ffmpeg version N-81036-g2b14204 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libass
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 42.100 / 57. 42.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, matroska,webm, from '001.mkv':
Metadata:
title : DB
encoder : libebml v1.2.1 + libmatroska v1.1.1
creation_time : 2011-09-15 16:44:37
Duration: 00:24:39.37, start: 0.000000, bitrate: 1429 kb/s
Stream #0:0(jpn): Audio: vorbis, 48000 Hz, stereo, fltp (default)
Stream #0:1: Video: h264 (High), yuv420p, 720x540 [SAR 1:1 DAR 4:3], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Stream #0:2(pol): Subtitle: ass (default)
Metadata:
title : Grupa
Input #1, png_pipe, from 'logovideo2.png':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: png, rgba(pc), 235x50 [SAR 2835:2835 DAR 47:10], 25 tbr, 25 tbn, 25 tbc
File '001.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x43c7a80] using SAR=1/1
[libx264 @ 0x43c7a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x43c7a80] profile High, level 3.0
[libx264 @ 0x43c7a80] 264 - core 148 r2 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
**[mp4 @ 0x442c9e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 2 times
[mp4 @ 0x442c9e0] Could not find tag for codec ass in stream #2, codec not currently supported in container**
Output #0, mp4, to '001.mp4':
Metadata:
title : DB
encoder : Lavf57.42.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x540 [SAR 1:1 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
Metadata:
encoder : Lavc57.50.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(jpn): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
encoder : Lavc57.50.100 aac
Stream #0:2(pol): Subtitle: ass (default)
Metadata:
title : Grupa
encoder : Lavc57.50.100 ass
Stream mapping:
Stream #0:1 (h264) -> overlay:main (graph 0)
Stream #1:0 (png) -> overlay:overlay (graph 0)
overlay (graph 0) -> Stream #0:0 (libx264)
Stream #0:0 -> #0:1 (vorbis (native) -> aac (native))
Stream #0:2 -> #0:2 (ass (ssa) -> ass (native))
**Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument**
[aac @ 0x43bf600] Qavg: -nan
2024 更新 - 解决方案： 命令可以正常工作，但在我的服务器上不起作用，因为我没有安装任何字体哈哈...所以我必须安装字体然后它就可以工作...:D
命令
ffmpeg -i 001.mkv -i logovideo2.png -filter_complex "[0:v][1:v]overlay=0:0,subtitles=001.mkv[out]" -map "[out]" -map 0:a 001.mp4没有字幕...这是输出：
ffmpeg version N-81036-g2b14204 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libass
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 50.100 / 57. 50.100
libavformat 57. 42.100 / 57. 42.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, matroska,webm, from '001.mkv':
Metadata:
title : Dragon Ball #1
encoder : libebml v1.2.1 + libmatroska v1.1.1
creation_time : 2011-09-15 16:44:37
Duration: 00:24:39.37, start: 0.000000, bitrate: 1429 kb/s
Stream #0:0(jpn): Audio: vorbis, 48000 Hz, stereo, fltp (default)
Stream #0:1: Video: h264 (High), yuv420p, 720x540 [SAR 1:1 DAR 4:3], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Stream #0:2(pol): Subtitle: ass (default)
Metadata:
title : Grupa
Input #1, png_pipe, from 'logovideo2.png':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: png, rgba(pc), 235x50 [SAR 2835:2835 DAR 47:10], 25 tbr, 25 tbn, 25 tbc
[Parsed_subtitles_1 @ 0x459aaa0] Shaper: FriBidi 0.19.4 (SIMPLE) HarfBuzz-ng 0.9.36 (COMPLEX)
[Parsed_subtitles_1 @ 0x459aaa0] Using font provider fontconfig
File '001_Dragon_Ball_NapisyPL.mp4' already exists. Overwrite ? [y/N] y
[Parsed_subtitles_1 @ 0x4542f80] Shaper: FriBidi 0.19.4 (SIMPLE) HarfBuzz-ng 0.9.36 (COMPLEX)
[Parsed_subtitles_1 @ 0x4542f80] Using font provider fontconfig
[libx264 @ 0x44fe7a0] using SAR=1/1
[libx264 @ 0x44fe7a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x44fe7a0] profile High, level 3.0
[libx264 @ 0x44fe7a0] 264 - core 148 r2 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[mp4 @ 0x453ad80] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, mp4, to '001.mp4':
Metadata:
title : Dragon Ball #1
encoder : Lavf57.42.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x540 [SAR 1:1 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
Metadata:
encoder : Lavc57.50.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(jpn): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
encoder : Lavc57.50.100 aac
Stream mapping:
Stream #0:1 (h264) -> overlay:main (graph 0)
Stream #1:0 (png) -> overlay:overlay (graph 0)
subtitles (graph 0) -> Stream #0:0 (libx264)
Stream #0:0 -> #0:1 (vorbis (native) -> aac (native))
Press [q] to stop, [?] for help
frame=34743 fps=108 q=-1.0 Lsize= 150041kB time=00:24:39.38 bitrate= 830.8kbits/s speed=4.59x
video:125218kB audio:23557kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.851010%
[libx264 @ 0x44fe7a0] frame I:340 Avg QP:19.82 size: 38155
[libx264 @ 0x44fe7a0] frame P:13109 Avg QP:22.20 size: 6213
[libx264 @ 0x44fe7a0] frame B:21294 Avg QP:25.43 size: 1588
[libx264 @ 0x44fe7a0] consecutive B-frames: 14.3% 9.7% 7.2% 68.9%
[libx264 @ 0x44fe7a0] mb I I16..4: 4.2% 61.7% 34.0%
[libx264 @ 0x44fe7a0] mb P I16..4: 1.9% 7.1% 2.0% P16..4: 38.2% 12.2% 7.9% 0.0% 0.0% skip:30.5%
[libx264 @ 0x44fe7a0] mb B I16..4: 0.2% 0.8% 0.3% B16..8: 34.2% 2.9% 0.5% direct: 1.4% skip:59.6% L0:45.0% L1:52.1% BI: 2.9%
[libx264 @ 0x44fe7a0] 8x8 transform intra:63.3% inter:77.4%
[libx264 @ 0x44fe7a0] coded y,uvDC,uvAC intra: 55.9% 74.8% 36.6% inter: 10.9% 18.1% 1.0%
[libx264 @ 0x44fe7a0] i16 v,h,dc,p: 39% 24% 13% 24%
[libx264 @ 0x44fe7a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 17% 27% 5% 5% 6% 5% 5% 6%
[libx264 @ 0x44fe7a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 20% 14% 6% 7% 8% 6% 6% 5%
[libx264 @ 0x44fe7a0] i8c dc,h,v,p: 48% 24% 22% 6%
[libx264 @ 0x44fe7a0] Weighted P-Frames: Y:5.3% UV:1.0%
[libx264 @ 0x44fe7a0] ref P L0: 65.0% 13.3% 15.4% 6.1% 0.3%
[libx264 @ 0x44fe7a0] ref B L0: 89.1% 8.4% 2.5%
[libx264 @ 0x44fe7a0] ref B L1: 97.2% 2.8%
[libx264 @ 0x44fe7a0] kb/s:707.89
[aac @ 0x45939e0] Qavg: 654.550