使用 ffmpeg 复制 mp3，QuickTime 无法播放
Copy mp3 with ffmpeg not playable by QuickTime
我正在尝试用一张图片创建视频并在上面复制音频。在 this（最后一节）之后，我尝试了：
$ ffmpeg -loop 1 -i img.jpg -i audio.mp3 -c:v libx264 -c:a copy -shortest h264.mp4
ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
built on Feb 23 2015 10:29:52 with Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.5.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 ' --enable-nonfree --enable-vda
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.102 / 56. 15.102
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, image2, from 'img.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 123986 kb/s
Stream #0:0: Video: mjpeg, yuvj440p(pc, bt470bg/unknown/unknown), 1440x900 [SAR 72:72 DAR 8:5], 25 fps, 25 tbr, 25 tbn, 25 tbc
[mp3 @ 0x7f94d2034600] Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from 'audio.mp3':
Metadata:
genre : Other
Duration: 00:00:03.25, start: 0.000000, bitrate: 130 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, mono, s16p, 128 kb/s
[swscaler @ 0x7f94d2800000] deprecated pixel format used, make sure you did set range correctly
No pixel format specified, yuvj444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7f94d281b200] using SAR=1/1
[libx264 @ 0x7f94d281b200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x7f94d281b200] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x7f94d281b200] 264 - core 142 r2455 021c0dc - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=4 threads=6 lookahead_threads=1 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=25 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
Output #0, mp4, to 'h264.mp4':
Metadata:
encoder : Lavf56.15.102
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj444p(pc), 1440x900 [SAR 1:1 DAR 8:5], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc56.13.100 libx264
Stream #0:1: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 64 fps= 30 q=28.0 size= 332kB time=00:00:00.48 bitrate=5670.9kbits/frame= 80 fps= 30 q=28.0 size= 344kB time=00:00:01.12 bitrate=2514.2kbits/frame= 96 fps= 30 q=28.0 size= 356kB time=00:00:01.76 bitrate=1655.1kbits/frame= 112 fps= 30 q=28.0 size= 367kB time=00:00:02.40 bitrate=1252.1kbits/frame= 129 fps= 31 q=28.0 size= 378kB time=00:00:03.08 bitrate=1006.5kbits/frame= 134 fps= 26 q=-1.0 Lsize= 386kB time=00:00:03.28 bitrate= 963.5kbits/s
video:331kB audio:51kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.120110%
[libx264 @ 0x7f94d281b200] frame I:1 Avg QP:19.84 size:329471
[libx264 @ 0x7f94d281b200] frame P:34 Avg QP:16.64 size: 189
[libx264 @ 0x7f94d281b200] frame B:99 Avg QP:25.33 size: 48
[libx264 @ 0x7f94d281b200] consecutive B-frames: 1.5% 0.0% 0.0% 98.5%
[libx264 @ 0x7f94d281b200] mb I I16..4: 2.8% 70.0% 27.3%
[libx264 @ 0x7f94d281b200] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 1.2% 0.0% 0.0% 0.0% 0.0% skip:98.8%
[libx264 @ 0x7f94d281b200] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0% 0.0% direct: 0.0% skip:100.0% L0: 1.6% L1:98.4% BI: 0.0%
[libx264 @ 0x7f94d281b200] 8x8 transform intra:70.0% inter:95.0%
[libx264 @ 0x7f94d281b200] coded y,u,v intra: 96.4% 73.8% 72.9% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7f94d281b200] i16 v,h,dc,p: 37% 4% 1% 58%
[libx264 @ 0x7f94d281b200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 27% 8% 3% 5% 5% 8% 4% 9%
[libx264 @ 0x7f94d281b200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 18% 5% 3% 7% 7% 10% 5% 7%
[libx264 @ 0x7f94d281b200] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7f94d281b200] ref P L0: 20.0% 0.4% 42.4% 37.2%
[libx264 @ 0x7f94d281b200] ref B L0: 0.0% 100.0%
[libx264 @ 0x7f94d281b200] ref B L1: 90.9% 9.1%
[libx264 @ 0x7f94d281b200] kb/s:508.50
但是我在 QuickTime 中得到了一个没有音频的视频。我认为这是输出容器 (mp4) 不支持 mp3 的问题。什么输出容器可能是最好的？由于质量损失，我不愿意将 mp3 转换为另一种格式。如果我的音频是 mp3，我可以更改此 ffmpeg 命令的哪些内容？
最终目的地是 YouTube。
因为 YouTube 是您可以忽略其他玩家的最终位置：
大多数非基于 FFmpeg 的播放器无法解码 yuvj444p。如果您希望这些其他播放器中的视频正常工作，请添加 -pix_fmt yuv420p 作为控制台输出中提到的输出选项。
有些播放器在解码 MP4 中的 MP3 时遇到问题，例如 QuickTime 和 WMP，具有特定的音频速率。如果您需要它在这些播放器中工作，您需要通过将 -c:a copy 更改为 -c:a aac 来重新编码为 AAC 音频。
由于输入是单个图像，您可以通过添加 -framerate 1 作为输入选项来降低帧速率以获得更快的编码。再次声明，部分玩家可能无法解码此帧率。
YouTube 可以处理这些潜在的问题，所以请随意上传。有关详细信息，请参阅 FFmpeg Wiki: YouTube。
我正在尝试用一张图片创建视频并在上面复制音频。在 this（最后一节）之后，我尝试了：
$ ffmpeg -loop 1 -i img.jpg -i audio.mp3 -c:v libx264 -c:a copy -shortest h264.mp4
ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
built on Feb 23 2015 10:29:52 with Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.5.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 ' --enable-nonfree --enable-vda
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.102 / 56. 15.102
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, image2, from 'img.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 123986 kb/s
Stream #0:0: Video: mjpeg, yuvj440p(pc, bt470bg/unknown/unknown), 1440x900 [SAR 72:72 DAR 8:5], 25 fps, 25 tbr, 25 tbn, 25 tbc
[mp3 @ 0x7f94d2034600] Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from 'audio.mp3':
Metadata:
genre : Other
Duration: 00:00:03.25, start: 0.000000, bitrate: 130 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, mono, s16p, 128 kb/s
[swscaler @ 0x7f94d2800000] deprecated pixel format used, make sure you did set range correctly
No pixel format specified, yuvj444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7f94d281b200] using SAR=1/1
[libx264 @ 0x7f94d281b200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x7f94d281b200] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x7f94d281b200] 264 - core 142 r2455 021c0dc - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=4 threads=6 lookahead_threads=1 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=25 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
Output #0, mp4, to 'h264.mp4':
Metadata:
encoder : Lavf56.15.102
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj444p(pc), 1440x900 [SAR 1:1 DAR 8:5], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc56.13.100 libx264
Stream #0:1: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 64 fps= 30 q=28.0 size= 332kB time=00:00:00.48 bitrate=5670.9kbits/frame= 80 fps= 30 q=28.0 size= 344kB time=00:00:01.12 bitrate=2514.2kbits/frame= 96 fps= 30 q=28.0 size= 356kB time=00:00:01.76 bitrate=1655.1kbits/frame= 112 fps= 30 q=28.0 size= 367kB time=00:00:02.40 bitrate=1252.1kbits/frame= 129 fps= 31 q=28.0 size= 378kB time=00:00:03.08 bitrate=1006.5kbits/frame= 134 fps= 26 q=-1.0 Lsize= 386kB time=00:00:03.28 bitrate= 963.5kbits/s
video:331kB audio:51kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.120110%
[libx264 @ 0x7f94d281b200] frame I:1 Avg QP:19.84 size:329471
[libx264 @ 0x7f94d281b200] frame P:34 Avg QP:16.64 size: 189
[libx264 @ 0x7f94d281b200] frame B:99 Avg QP:25.33 size: 48
[libx264 @ 0x7f94d281b200] consecutive B-frames: 1.5% 0.0% 0.0% 98.5%
[libx264 @ 0x7f94d281b200] mb I I16..4: 2.8% 70.0% 27.3%
[libx264 @ 0x7f94d281b200] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 1.2% 0.0% 0.0% 0.0% 0.0% skip:98.8%
[libx264 @ 0x7f94d281b200] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0% 0.0% direct: 0.0% skip:100.0% L0: 1.6% L1:98.4% BI: 0.0%
[libx264 @ 0x7f94d281b200] 8x8 transform intra:70.0% inter:95.0%
[libx264 @ 0x7f94d281b200] coded y,u,v intra: 96.4% 73.8% 72.9% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7f94d281b200] i16 v,h,dc,p: 37% 4% 1% 58%
[libx264 @ 0x7f94d281b200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 27% 8% 3% 5% 5% 8% 4% 9%
[libx264 @ 0x7f94d281b200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 18% 5% 3% 7% 7% 10% 5% 7%
[libx264 @ 0x7f94d281b200] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7f94d281b200] ref P L0: 20.0% 0.4% 42.4% 37.2%
[libx264 @ 0x7f94d281b200] ref B L0: 0.0% 100.0%
[libx264 @ 0x7f94d281b200] ref B L1: 90.9% 9.1%
[libx264 @ 0x7f94d281b200] kb/s:508.50
但是我在 QuickTime 中得到了一个没有音频的视频。我认为这是输出容器 (mp4) 不支持 mp3 的问题。什么输出容器可能是最好的？由于质量损失，我不愿意将 mp3 转换为另一种格式。如果我的音频是 mp3，我可以更改此 ffmpeg 命令的哪些内容？
最终目的地是 YouTube。
因为 YouTube 是您可以忽略其他玩家的最终位置：
大多数非基于 FFmpeg 的播放器无法解码
yuvj444p。如果您希望这些其他播放器中的视频正常工作，请添加-pix_fmt yuv420p作为控制台输出中提到的输出选项。有些播放器在解码 MP4 中的 MP3 时遇到问题，例如 QuickTime 和 WMP，具有特定的音频速率。如果您需要它在这些播放器中工作，您需要通过将
-c:a copy更改为-c:a aac来重新编码为 AAC 音频。由于输入是单个图像，您可以通过添加
-framerate 1作为输入选项来降低帧速率以获得更快的编码。再次声明，部分玩家可能无法解码此帧率。
YouTube 可以处理这些潜在的问题，所以请随意上传。有关详细信息，请参阅 FFmpeg Wiki: YouTube。