代码： 全选
000: 46 4C 56 01 05 00 00 00 FLV.....
008: 09 00 00 00 00 12 00 01 ........
016: 11 00 00 00 00 00 00 00 ........
024: 02 00 0A 6F 6E 4D 65 74 ...onMet
032: 61 44 61 74 61 08 00 00 aData...
040: 00 0C 00 08 64 75 72 61 ....dura
048: 74 69 6F 6E 00 40 6D C6 tion.@m.
056: 14 7A E1 47 AE 00 05 77 .z.G...w
064: 69 64 74 68 00 40 7E 00 idth.@~.
072: 00 00 00 00 00 00 06 68 .......h
080: 65 69 67 68 74 00 40 76 eight.@v
088: 80 00 00 00 00 00 00 0D ........
096: 76 69 64 65 6F 64 61 74 videodat
104: 61 72 61 74 65 00 40 6E arate.@n
112: 84 80 00 00 00 00 00 0C ........
120: 76 69 64 65 6F 63 6F 64 videocod直接用ffmpeg来提取呢？ffmpeg -i a.flv -acodec copy output.mp3TeliuTe 写了：提取网易bobo录制的flv视频里音频，用Audacity导入只有前几秒，用pitivi可以导入，但是渲染的是视频
不知道Ubuntu除了audacity以外还有没有其他类似的音频工具，小巧易用的
用wine goldwave打开也提示无法识别，但是在winxp下正常打开代码： 全选
000: 46 4C 56 01 05 00 00 00 FLV..... 008: 09 00 00 00 00 12 00 01 ........ 016: 11 00 00 00 00 00 00 00 ........ 024: 02 00 0A 6F 6E 4D 65 74 ...onMet 032: 61 44 61 74 61 08 00 00 aData... 040: 00 0C 00 08 64 75 72 61 ....dura 048: 74 69 6F 6E 00 40 6D C6 tion.@m. 056: 14 7A E1 47 AE 00 05 77 .z.G...w 064: 69 64 74 68 00 40 7E 00 idth.@~. 072: 00 00 00 00 00 00 06 68 .......h 080: 65 69 67 68 74 00 40 76 eight.@v 088: 80 00 00 00 00 00 00 0D ........ 096: 76 69 64 65 6F 64 61 74 videodat 104: 61 72 61 74 65 00 40 6E arate.@n 112: 84 80 00 00 00 00 00 0C ........ 120: 76 69 64 65 6F 63 6F 64 videocod
代码： 全选
teliute@1-Teacher:~/音乐/2016/饼$ ffmpeg -i 20160606154615饼痛哭的人.flv -acodec copy output.mp3
ffmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.2, Copyright (c) 2000-2014 the Libav developers
built on Apr 1 2016 14:28:02 with gcc 4.6.3
The ffmpeg program is only provided for script compatibility and will be removed
in a future release. It has been deprecated in the Libav project to allow for
incompatible command line syntax improvements in its replacement called avconv
(see Changelog for details). Please use avconv instead.
[aac @ 0x807f5c0] channel element 0.0 is not allocated
Last message repeated 111 times
[flv @ 0x807baa0] max_analyze_duration reached
[flv @ 0x807baa0] Estimating duration from bitrate, this may be inaccurate
Input #0, flv, from '20160606154615饼痛哭的人.flv':
Metadata:
encoder : Lavf56.25.101
Duration: 00:02:26.51, start: 0.000000, bitrate: 282 kb/s
Stream #0.0: Video: h264 (Main), yuv420p, 480x360, 250 kb/s, 12 tbr, 1k tbn, 24 tbc
Stream #0.1: Audio: aac, 44100 Hz, stereo, s16, 32 kb/s
Output #0, mp3, to 'output.mp3':
Metadata:
TSSE : Lavf53.21.1
Stream #0.0: Audio: aac, 44100 Hz, stereo, 32 kb/s
Stream mapping:
Stream #0.1 -> #0.0
Press ctrl-c to stop encoding
size= 572kB time=146.51 bitrate= 32.0kbits/s
video:0kB audio:572kB global headers:0kB muxing overhead 0.023385%
代码： 全选
[aac @ 0x8ea25c0]
[mp4 @ 0x8ea6020] track 0: codec frame size is not set
代码： 全选
$ avconv -i 20160609214626.flv -vn -acodec copy output.mp4
avconv version 9.18-6:9.18-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers
built on Mar 16 2015 13:19:10 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
[flv @ 0xd53020] max_analyze_duration reached
Input #0, flv, from '20160609214626.flv':
Metadata:
encoder : Lavf56.25.101
Duration: 00:00:12.37, start: 0.000000, bitrate: N/A
Stream #0.0: Video: h264 (Main), yuv420p, 480x360, 250 kb/s, 12 fps, 1k tbn, 24 tbc
Stream #0.1: Audio: aac, 44100 Hz, stereo, fltp, 32 kb/s
Output #0, mp4, to 'output.mp4':
Metadata:
encoder : Lavf54.20.4
Stream #0.0: Audio: aac, 44100 Hz, stereo, 32 kb/s
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Press ctrl-c to stop encoding
size= 51kB time=12.37 bitrate= 33.7kbits/s
video:0kB audio:46kB global headers:0kB muxing overhead 10.166480%
代码： 全选
teliute@1-Teacher:~/下载/ffmpeg-git-20160614-32bit-static$ ./ffmpeg -i 20160609214626.flv -vn -acodec copy output.mp4