我正在努力使用 Drupal 视频模块中的 FFmpeg 将文件生成与 IOS 和 Flash Player10 及更高版本兼容的 MP4。 到目前为止我已经使用了以下命令，请注意以“!”开头的变量是占位符，将被替换为适当的项目:
FFmpeg -strict experimental -y -i !videofile -pass 1 -s !widthx!height -b:v 500k -threads 0 -vcodec libx264 -vf "pad=!paddingwidth:!paddingheight:!paddingleft:!paddingtop:000000" -preset slow -an !convertfile
FFmpeg -strict experimental -y -i !videofile -pass 2 -s !widthx!height -b:v 500k -threads 0 -vcodec libx264 -vf "pad=!paddingwidth:!paddingheight:!paddingleft:!paddingtop:000000" -preset slow -acodec aac -ab 128k !convertfile
上述命令产生错误:
执行渲染预设 HTML5 MP4 的命令时出错，命令 #1:
nice -n 19 /usr/bin/ffmpeg/ffmpeg -y -i '80137db8c3_1334836277_int_tr_19.mp4' -s 176x100 -b:v 500k -threads 0 -vcodec libx264 -preset slow -acodec aac -ab 128k '/converted/80137db8c3_1334836277_int_tr_19.mp4' 2>&1
Output:
ffmpeg version git-2013-02-01-5a67e30 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 1 2013 14:23:14 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
libavutil 52. 17.100 / 52. 17.100
libavcodec 54. 91.100 / 54. 91.100
libavformat 54. 61.104 / 54. 61.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 35.100 / 3. 35.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '80137db8c3_1334836277_int_tr_19.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2011-03-28 00:12:26
Duration: 00:02:01.14, start: 0.000000, bitrate: 703 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 601 kb/s, 29.96 fps, 29.92 tbr, 1k tbn, 59.83 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s
Metadata:
creation_time : 2011-03-28 00:12:27
handler_name : (C) 2007 Google Inc. v08.13.2007.
[libx264 @ 0x34ec060] using SAR=100/99
[libx264 @ 0x34ec060] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x34ec060] profile High, level 2.0
[libx264 @ 0x34ec060] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.
Alternatively use the non experimental encoder 'libfaac'.
我使用的另一个命令是:
FFmpeg -i !videofile -an -pass 1 -vcodec libx264 -preset slow -b 500k -threads auto !convertfile
FFMpeg -y -i !videofile -acodec libfaac -ab 128k -pass 2 -vcodec libx264 -preset slow -b 500k -threads auto !convertfile
第一遍的输出:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'comiccon.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
creation_time : 2012-08-15 17:12:37
Duration: 01:17:15.93, start: 0.000000, bitrate: 706 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 636 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 63 kb/s
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : SoundHandler
Please use -b:a or -b:v, -b is ambiguous
using SAR=1/1
[libx264 @ 0x1c39be0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x1c39be0] profile Main, level 3.0
[libx264 @ 0x1c39be0] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'comiccon.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
encoder : Lavf54.61.104
Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, pass 1, 500 kb/s, 15360 tbn, 30 tbc
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : VideoHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Press [q] to stop, [?] for help
frame=139078 fps=279 q=32766.0 Lsize= 286145kB time=01:17:15.86 bitrate= 505.6kbits/s
video:284758kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.487000%
[libx264 @ 0x1c39be0] frame I:656 Avg QP:19.51 size: 21457
[libx264 @ 0x1c39be0] frame P:76006 Avg QP:22.19 size: 3141
[libx264 @ 0x1c39be0] frame B:62416 Avg QP:26.38 size: 621
[libx264 @ 0x1c39be0] consecutive B-frames: 32.3% 17.5% 18.6% 31.6%
[libx264 @ 0x1c39be0] mb I I16..4: 24.5% 0.0% 75.5%
[libx264 @ 0x1c39be0] mb P I16..4: 7.5% 0.0% 0.0% P16..4: 40.5% 0.0% 0.0% 0.0% 0.0% skip:52.1%
[libx264 @ 0x1c39be0] mb B I16..4: 1.4% 0.0% 0.0% B16..8: 12.0% 0.0% 0.0% direct: 2.9% skip:83.7% L0:41.1% L1:41.6% BI:17.3%
[libx264 @ 0x1c39be0] final ratefactor: 23.45
[libx264 @ 0x1c39be0] direct mvs spatial:95.3% temporal:4.7%
[libx264 @ 0x1c39be0] coded y,uvDC,uvAC intra: 37.6% 42.8% 11.8% inter: 8.9% 8.2% 0.5%
[libx264 @ 0x1c39be0] i16 v,h,dc,p: 43% 28% 19% 10%
[libx264 @ 0x1c39be0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 21% 11% 6% 4% 5% 4% 6% 6%
[libx264 @ 0x1c39be0] i8c dc,h,v,p: 57% 19% 20% 4%
[libx264 @ 0x1c39be0] Weighted P-Frames: Y:1.4% UV:0.5%
[libx264 @ 0x1c39be0] kb/s:503.18
第二遍的输出:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'comiccon.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
creation_time : 2012-08-15 17:12:37
Duration: 01:17:15.93, start: 0.000000, bitrate: 706 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 636 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 63 kb/s
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : SoundHandler
Please use -b:a or -b:v, -b is ambiguous
[libx264 @ 0x3247f80] using SAR=1/1
[libx264 @ 0x3247f80] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x3247f80] profile High, level 3.0
[libx264 @ 0x3247f80] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=2pass mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'comiccon.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
encoder : Lavf54.61.104
Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, pass 2, 500 kb/s, 15360 tbn, 30 tbc
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
Metadata:
creation_time : 2012-08-15 17:12:37
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
frame=139078 fps=206 q=32766.0 Lsize= 357252kB time=01:17:15.93 bitrate= 631.3kbits/s
video:282992kB audio:69592kB subtitle:0 global headers:0kB muxing overhead 1.324238%
[libx264 @ 0x3247f80] frame I:656 Avg QP:19.61 size: 20433
[libx264 @ 0x3247f80] frame P:76006 Avg QP:23.07 size: 2996
[libx264 @ 0x3247f80] frame B:62416 Avg QP:26.23 size: 780
[libx264 @ 0x3247f80] consecutive B-frames: 32.3% 17.5% 18.6% 31.6%
[libx264 @ 0x3247f80] mb I I16..4: 17.2% 37.8% 44.9%
[libx264 @ 0x3247f80] mb P I16..4: 2.9% 3.7% 1.2% P16..4: 30.3% 6.1% 3.4% 0.0% 0.0% skip:52.5%
[libx264 @ 0x3247f80] mb B I16..4: 0.5% 0.6% 0.3% B16..8: 25.9% 2.2% 0.5% direct: 0.9% skip:69.3% L0:51.4% L1:43.0% BI: 5.7%
[libx264 @ 0x3247f80] 8x8 transform intra:45.9% inter:51.5%
[libx264 @ 0x3247f80] direct mvs spatial:85.5% temporal:14.5%
[libx264 @ 0x3247f80] coded y,uvDC,uvAC intra: 47.3% 49.2% 13.5% inter: 9.0% 9.4% 0.5%
[libx264 @ 0x3247f80] i16 v,h,dc,p: 38% 27% 13% 22%
[libx264 @ 0x3247f80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 16% 14% 5% 5% 7% 7% 8% 9%
[libx264 @ 0x3247f80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 15% 9% 6% 7% 8% 7% 8% 8%
[libx264 @ 0x3247f80] i8c dc,h,v,p: 49% 22% 20% 8%
[libx264 @ 0x3247f80] Weighted P-Frames: Y:1.4% UV:0.5%
[libx264 @ 0x3247f80] ref P L0: 79.3% 10.4% 6.8% 1.6% 1.2% 0.7% 0.0%
[libx264 @ 0x3247f80] ref B L0: 93.6% 4.8% 1.2% 0.3%
[libx264 @ 0x3247f80] ref B L1: 96.6% 3.4%
[libx264 @ 0x3247f80] kb/s:500.06
上述命令正确生成文件，但无法在 Flash Player 中播放。我注意到的一件事是，如果输入文件也是 mp4，则可能会发生这种情况。该命令是针对用户上传文件执行的，因此输入文件可以是任意格式。
以下是有关我的 FFmpeg 版本的信息:
> ffmpeg 版本 git-2013-02-01-5a67e30 版权所有 (c) 2000-2013
> FFmpeg 开发人员于 2013 年 2 月 1 日 14:23:14 使用 gcc 4.6 构建
> (Ubuntu/Linaro 4.6.3-1ubuntu5) 配置:--enable-gpl
> --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable -libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3 libavutil 52.17.100/52.17.100
libavcodec 54.91.100/54.91.100
libavformat 54.61.104/54.61.104
libavdevice 54.3.103/54.3.103
libavfilter 3.35.100/3.35.100
libswscale 2.2.100/2.2.100
libsresample 0.17.102/0.17.102
libpostproc 52.2.100/52.2.1
最佳答案
一些注意事项:
二进制文件是
ffmpeg；不是 FFmpeg 或 FFMpeg。-strictexperimental应该用作输出选项。您将其用作输入选项并且被忽略。其他 AAC 编码器不需要它。-threads auto现在是默认值，添加它是多余的。您使用
--enable-libfdk-aac进行编译，因此您可以使用-codec:a libfdk_aac，这将提供比每个文件大小更好的质量其他 AAC 编码器。请参阅FFmpeg AAC Encoding Guide和 FFmpeg and x264 Encoding Guide .不应忽略消息
请使用 -b:a 或 -b:v，-b 不明确，以便 ffmpeg 知道您是否要将所需的比特率应用于音频或视频。我不明白为什么第二个命令不能在 Flash 播放器中运行。您可能只是在播放之前没有等待足够长的时间来完全下载文件。您可以添加
-movflags +faststart以允许在下载完成之前开始播放。将
-s替换为scale过滤，这样你就可以有一个合适的filterchain与pad。下次显示实际命令而不是带有变量的命令；否则我可以给出一个正确的过滤示例。
关于drupal - FFMPEG - 将任何类型的文件转换为与 IOS 和 Flash 兼容的 Mp4，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14694042/