FFMPEG 将视频分割成带有音频的片段
FFMPEG split video to segments with audio
我想用 m3u8 播放列表将 mov 文件拆分为 .ts 片段。
除音频外一切正常。音频不工作，而且 ffmpeg 似乎忽略了音频流。
这是我的命令：
ffmpeg -i stepteen2.mov
-c:a aac
-c:v libx264
-an
-map 0
-muxdelay 0
-muxpreload 0
-output_ts_offset 0
-segment_time 2
-segment_wrap 1000
-segment_list_size 0
-segment_list temp.m3u8
-segment_list_flags +cache
-segment_list_type m3u8
-f segment
temp-%03d.ts
执行此命令后，我收到 5 个 ts 片段和带有片段路径列表的 m3u8 播放列表。
如果我打开片段文件的属性，音频和视频选项卡中没有任何信息（尽管视频有效）
这是输出：
ffmpeg version n4.1.4 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-avisynth --enable-cuda --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'stepteen2.mov':
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
Duration: 00:00:28.60, start: 0.000000, bitrate: 111 kb/s
Stream #0:0(eng): Video: svq1 (SVQ1 / 0x31515653), yuv410p, 160x120, 90 kb/s, 7.52 fps, 7.50 tbr, 600 tbn, 600 tbc (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Video Media Handler
encoder : Sorenson Video
Stream #0:1(eng): Audio: qdmc (QDMC / 0x434D4451), 44100 Hz, mono, s16, 20 kb/s (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Sound Media Handler
Stream mapping:
Stream #0:0 -> #0:0 (svq1 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x55a5a80b8dc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55a5a80b8dc0] profile High, level 1.0
[libx264 @ 0x55a5a80b8dc0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=4 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=7 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
[segment @ 0x55a5a7fd2e00] Opening 'temp-000.ts' for writing
Output #0, segment, to 'temp-%03d.ts':
Metadata:
encoder : Lavf58.20.100
Stream #0:0(eng): Video: h264 (libx264), yuv420p, 160x120, q=-1--1, 7.50 fps, 90k tbn, 7.50 tbc (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Video Media Handler
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-001.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-002.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-003.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-004.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-005.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
frame= 215 fps=0.0 q=-1.0 Lsize=N/A time=00:00:28.26 bitrate=N/A speed= 162x
video:217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0x55a5a80b8dc0] frame I:8 Avg QP:14.15 size: 2625
[libx264 @ 0x55a5a80b8dc0] frame P:93 Avg QP:21.28 size: 1295
[libx264 @ 0x55a5a80b8dc0] frame B:114 Avg QP:24.62 size: 703
[libx264 @ 0x55a5a80b8dc0] consecutive B-frames: 27.0% 2.8% 12.6% 57.7%
[libx264 @ 0x55a5a80b8dc0] mb I I16..4: 28.3% 23.0% 48.8%
[libx264 @ 0x55a5a80b8dc0] mb P I16..4: 1.5% 6.2% 7.0% P16..4: 21.3% 17.8% 15.1% 0.0% 0.0% skip:31.1%
[libx264 @ 0x55a5a80b8dc0] mb B I16..4: 1.2% 1.8% 1.5% B16..8: 28.1% 16.0% 10.0% direct:11.0% skip:30.4% L0:43.4% L1:31.9% BI:24.8%
[libx264 @ 0x55a5a80b8dc0] 8x8 transform intra:35.9% inter:39.5%
[libx264 @ 0x55a5a80b8dc0] coded y,uvDC,uvAC intra: 73.6% 71.0% 48.2% inter: 34.9% 32.7% 4.3%
[libx264 @ 0x55a5a80b8dc0] i16 v,h,dc,p: 61% 12% 26% 2%
[libx264 @ 0x55a5a80b8dc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 14% 23% 5% 4% 5% 4% 7% 6%
[libx264 @ 0x55a5a80b8dc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 16% 15% 6% 5% 8% 6% 7% 7%
[libx264 @ 0x55a5a80b8dc0] i8c dc,h,v,p: 53% 17% 21% 9%
[libx264 @ 0x55a5a80b8dc0] Weighted P-Frames: Y:14.0% UV:9.7%
[libx264 @ 0x55a5a80b8dc0] ref P L0: 65.2% 16.8% 12.2% 5.4% 0.4%
[libx264 @ 0x55a5a80b8dc0] ref B L0: 92.3% 6.2% 1.4%
[libx264 @ 0x55a5a80b8dc0] ref B L1: 97.3% 2.7%
[libx264 @ 0x55a5a80b8dc0] kb/s:61.84
我看到到 'temp-%03d.ts' 的输出 #0，段仅包含视频流：
Stream #0:0(eng): Video: h264 (libx264), yuv420p, 160x120, q=-1--1, 7.50 fps, 90k tbn, 7.50 tbc (default)
...
video:217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
删除 -an。此选项表示“无音频”。
我想用 m3u8 播放列表将 mov 文件拆分为 .ts 片段。 除音频外一切正常。音频不工作，而且 ffmpeg 似乎忽略了音频流。
这是我的命令：
ffmpeg -i stepteen2.mov
-c:a aac
-c:v libx264
-an
-map 0
-muxdelay 0
-muxpreload 0
-output_ts_offset 0
-segment_time 2
-segment_wrap 1000
-segment_list_size 0
-segment_list temp.m3u8
-segment_list_flags +cache
-segment_list_type m3u8
-f segment
temp-%03d.ts
执行此命令后，我收到 5 个 ts 片段和带有片段路径列表的 m3u8 播放列表。 如果我打开片段文件的属性，音频和视频选项卡中没有任何信息（尽管视频有效）
这是输出：
ffmpeg version n4.1.4 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-avisynth --enable-cuda --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'stepteen2.mov':
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
Duration: 00:00:28.60, start: 0.000000, bitrate: 111 kb/s
Stream #0:0(eng): Video: svq1 (SVQ1 / 0x31515653), yuv410p, 160x120, 90 kb/s, 7.52 fps, 7.50 tbr, 600 tbn, 600 tbc (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Video Media Handler
encoder : Sorenson Video
Stream #0:1(eng): Audio: qdmc (QDMC / 0x434D4451), 44100 Hz, mono, s16, 20 kb/s (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Sound Media Handler
Stream mapping:
Stream #0:0 -> #0:0 (svq1 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x55a5a80b8dc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55a5a80b8dc0] profile High, level 1.0
[libx264 @ 0x55a5a80b8dc0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=4 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=7 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
[segment @ 0x55a5a7fd2e00] Opening 'temp-000.ts' for writing
Output #0, segment, to 'temp-%03d.ts':
Metadata:
encoder : Lavf58.20.100
Stream #0:0(eng): Video: h264 (libx264), yuv420p, 160x120, q=-1--1, 7.50 fps, 90k tbn, 7.50 tbc (default)
Metadata:
creation_time : 1998-11-12T18:28:20.000000Z
handler_name : Apple Video Media Handler
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-001.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-002.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-003.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-004.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp-005.ts' for writing
[segment @ 0x55a5a7fd2e00] Opening 'temp.m3u8.tmp' for writing
frame= 215 fps=0.0 q=-1.0 Lsize=N/A time=00:00:28.26 bitrate=N/A speed= 162x
video:217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0x55a5a80b8dc0] frame I:8 Avg QP:14.15 size: 2625
[libx264 @ 0x55a5a80b8dc0] frame P:93 Avg QP:21.28 size: 1295
[libx264 @ 0x55a5a80b8dc0] frame B:114 Avg QP:24.62 size: 703
[libx264 @ 0x55a5a80b8dc0] consecutive B-frames: 27.0% 2.8% 12.6% 57.7%
[libx264 @ 0x55a5a80b8dc0] mb I I16..4: 28.3% 23.0% 48.8%
[libx264 @ 0x55a5a80b8dc0] mb P I16..4: 1.5% 6.2% 7.0% P16..4: 21.3% 17.8% 15.1% 0.0% 0.0% skip:31.1%
[libx264 @ 0x55a5a80b8dc0] mb B I16..4: 1.2% 1.8% 1.5% B16..8: 28.1% 16.0% 10.0% direct:11.0% skip:30.4% L0:43.4% L1:31.9% BI:24.8%
[libx264 @ 0x55a5a80b8dc0] 8x8 transform intra:35.9% inter:39.5%
[libx264 @ 0x55a5a80b8dc0] coded y,uvDC,uvAC intra: 73.6% 71.0% 48.2% inter: 34.9% 32.7% 4.3%
[libx264 @ 0x55a5a80b8dc0] i16 v,h,dc,p: 61% 12% 26% 2%
[libx264 @ 0x55a5a80b8dc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 14% 23% 5% 4% 5% 4% 7% 6%
[libx264 @ 0x55a5a80b8dc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 16% 15% 6% 5% 8% 6% 7% 7%
[libx264 @ 0x55a5a80b8dc0] i8c dc,h,v,p: 53% 17% 21% 9%
[libx264 @ 0x55a5a80b8dc0] Weighted P-Frames: Y:14.0% UV:9.7%
[libx264 @ 0x55a5a80b8dc0] ref P L0: 65.2% 16.8% 12.2% 5.4% 0.4%
[libx264 @ 0x55a5a80b8dc0] ref B L0: 92.3% 6.2% 1.4%
[libx264 @ 0x55a5a80b8dc0] ref B L1: 97.3% 2.7%
[libx264 @ 0x55a5a80b8dc0] kb/s:61.84
我看到到 'temp-%03d.ts' 的输出 #0，段仅包含视频流：
Stream #0:0(eng): Video: h264 (libx264), yuv420p, 160x120, q=-1--1, 7.50 fps, 90k tbn, 7.50 tbc (default)
...
video:217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
删除 -an。此选项表示“无音频”。