尝试将音频 CD 转换为 mp3。
ubuntu 说ffmpeg已被弃用，我应该使用avconv
以下是编解码器后我安装了所有我能找到aptitude的库提供编解码器。
sellout$ avconv -codecs
avconv version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Apr 2 2013 17:00:59 with gcc 4.6.3
Codecs:
D..... = Decoding supported
.E.... = Encoding supported
..V... = Video codec
..A... = Audio codec
..S... = Subtitle codec
...S.. = Supports draw_horiz_band
....D. = Supports direct rendering method 1
.....T = Supports weird frame truncation
------
D V D 4xm 4X Movie
D V D 8bps QuickTime 8BPS video
D A D 8svx_exp 8SVX exponential
D A D 8svx_fib 8SVX fibonacci
D V D FRWU Forward Uncompressed
EV a64multi Multicolor charset for Commodore 64
EV a64multi5 Multicolor charset for Commodore 64, extended with 5th color (colram)
DEA D aac Advanced Audio Coding
D A D aac_latm AAC LATM (Advanced Audio Codec LATM syntax)
D V D aasc Autodesk RLE
DEA D ac3 ATSC A/52A (AC-3)
EA ac3_fixed ATSC A/52A (AC-3)
D A D adpcm_4xm ADPCM 4X Movie
DEA D adpcm_adx SEGA CRI ADX ADPCM
D A D adpcm_ct ADPCM Creative Technology
D A D adpcm_ea ADPCM Electronic Arts
D A D adpcm_ea_maxis_xa ADPCM Electronic Arts Maxis CDROM XA
D A D adpcm_ea_r1 ADPCM Electronic Arts R1
D A D adpcm_ea_r2 ADPCM Electronic Arts R2
D A D adpcm_ea_r3 ADPCM Electronic Arts R3
D A D adpcm_ea_xas ADPCM Electronic Arts XAS
D A D adpcm_ima_amv ADPCM IMA AMV
D A D adpcm_ima_dk3 ADPCM IMA Duck DK3
D A D adpcm_ima_dk4 ADPCM IMA Duck DK4
D A D adpcm_ima_ea_eacs ADPCM IMA Electronic Arts EACS
D A D adpcm_ima_ea_sead ADPCM IMA Electronic Arts SEAD
D A D adpcm_ima_iss ADPCM IMA Funcom ISS
DEA D adpcm_ima_qt ADPCM IMA QuickTime
D A D adpcm_ima_smjpeg ADPCM IMA Loki SDL MJPEG
DEA D adpcm_ima_wav ADPCM IMA WAV
D A D adpcm_ima_ws ADPCM IMA Westwood
DEA D adpcm_ms ADPCM Microsoft
D A D adpcm_sbpro_2 ADPCM Sound Blaster Pro 2-bit
D A D adpcm_sbpro_3 ADPCM Sound Blaster Pro 2.6-bit
D A D adpcm_sbpro_4 ADPCM Sound Blaster Pro 4-bit
DEA D adpcm_swf ADPCM Shockwave Flash
D A D adpcm_thp ADPCM Nintendo Gamecube THP
D A D adpcm_xa ADPCM CDROM XA
DEA D adpcm_yamaha ADPCM Yamaha
DEA D alac ALAC (Apple Lossless Audio Codec)
D A D als MPEG-4 Audio Lossless Coding (ALS)
D A D amrnb Adaptive Multi-Rate NarrowBand
D A D amrwb Adaptive Multi-Rate WideBand
D V amv AMV Video
D V D anm Deluxe Paint Animation
D V D ansi ASCII/ANSI art
D A D ape Monkey's Audio
DES ass Advanced SubStation Alpha subtitle
DEV D asv1 ASUS V1
DEV D asv2 ASUS V2
D A D atrac1 Atrac 1 (Adaptive TRansform Acoustic Coding)
D A D atrac3 Atrac 3 (Adaptive TRansform Acoustic Coding 3)
D V D aura Auravision AURA
D V D aura2 Auravision Aura 2
D V D avs AVS (Audio Video Standard) video
D V D bethsoftvid Bethesda VID video
D V D bfi Brute Force & Ignorance
D A D binkaudio_dct Bink Audio (DCT)
D A D binkaudio_rdft Bink Audio (RDFT)
D V binkvideo Bink video
DEV D bmp BMP image
D A D bmv_audio Discworld II BMV audio
D V bmv_video Discworld II BMV video
D V D c93 Interplay C93
D V D camstudio CamStudio
D V D camtasia TechSmith Screen Capture Codec
D V D cavs Chinese AVS video (AVS1-P2, JiZhun profile)
D V D cdgraphics CD Graphics video
D V D cinepak Cinepak
DEV D cljr Cirrus Logic AccuPak
D A D cook COOK
D V D cyuv Creative YUV (CYUV)
D A D dca DCA (DTS Coherent Acoustics)
D V D dfa Chronomaster DFA
DEV D dnxhd VC3/DNxHD
DEV dpx DPX image
D A D dsicinaudio Delphine Software International CIN audio
D V D dsicinvideo Delphine Software International CIN video
DES dvbsub DVB subtitles
DES dvdsub DVD subtitles
DEV D dvvideo DV (Digital Video)
D V D dxa Feeble Files/ScummVM DXA
D V D dxtory Dxtory
DEA D eac3 ATSC A/52 E-AC-3
D V D eacmv Electronic Arts CMV video
D V D eamad Electronic Arts Madcow Video
D V D eatgq Electronic Arts TGQ video
D V eatgv Electronic Arts TGV video
D V D eatqi Electronic Arts TQI Video
D V D escape124 Escape 124
DEV D ffv1 FFmpeg video codec #1
DEVSD ffvhuff Huffyuv FFmpeg variant
DEA D flac FLAC (Free Lossless Audio Codec)
DEV D flashsv Flash Screen Video
D V D flashsv2 Flash Screen Video v2
D V D flic Autodesk Animator Flic video
DEVSD flv Flash Video (FLV) / Sorenson Spark / Sorenson H.263
D V D fraps Fraps
DEA D g722 G.722 ADPCM
DEA D g726 G.726 ADPCM
DEV D gif GIF (Graphics Interchange Format)
D A D gsm GSM
D A D gsm_ms GSM Microsoft variant
DEV D h261 H.261
DEVSDT h263 H.263 / H.263-1996
D VSD h263i Intel H.263
EV h263p H.263+ / H.263-1998 / H.263 version 2
D V D h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
D V D h264_vdpau H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)
DEVSD huffyuv Huffyuv / HuffYUV
D V D idcinvideo id Quake II CIN video
D V D iff_byterun1 IFF ByteRun1
D V D iff_ilbm IFF ILBM
D A D imc IMC (Intel Music Coder)
D V D indeo2 Intel Indeo 2
D V indeo3 Intel Indeo 3
D V indeo4 Intel Indeo Video Interactive 4
D V indeo5 Intel Indeo Video Interactive 5
D A D interplay_dpcm DPCM Interplay
D V D interplayvideo Interplay MVE video
DEV D jpegls JPEG-LS
D V D jv Bitmap Brothers JV video
D V kgv1 Kega Game Video
D V D kmvc Karl Morton's video codec
D V D lagarith Lagarith lossless
DEA D libgsm libgsm GSM
DEA D libgsm_ms libgsm GSM Microsoft variant
DEV libschroedinger libschroedinger Dirac 2.2
DEA D libspeex libspeex Speex
EV libtheora libtheora Theora
EA libvorbis libvorbis Vorbis
DEV libvpx libvpx VP8
EV ljpeg Lossless JPEG
D V D loco LOCO
D A D mace3 MACE (Macintosh Audio Compression/Expansion) 3:1
D A D mace6 MACE (Macintosh Audio Compression/Expansion) 6:1
D V D mdec Sony PlayStation MDEC (Motion DECoder)
D V D mimic Mimic
DEV D mjpeg MJPEG (Motion JPEG)
D V D mjpegb Apple MJPEG-B
D A D mlp MLP (Meridian Lossless Packing)
D V D mmvideo American Laser Games MM Video
D V D motionpixels Motion Pixels video
D A D mp1 MP1 (MPEG audio layer 1)
D A D mp1float MP1 (MPEG audio layer 1)
DEA D mp2 MP2 (MPEG audio layer 2)
D A D mp2float MP2 (MPEG audio layer 2)
D A D mp3 MP3 (MPEG audio layer 3)
D A D mp3adu ADU (Application Data Unit) MP3 (MPEG audio layer 3)
D A D mp3adufloat ADU (Application Data Unit) MP3 (MPEG audio layer 3)
D A D mp3float MP3 (MPEG audio layer 3)
D A D mp3on4 MP3onMP4
D A D mp3on4float MP3onMP4
D A D mpc7 Musepack SV7
D A D mpc8 Musepack SV8
DEVSDT mpeg1video MPEG-1 video
D V DT mpeg1video_vdpau MPEG-1 video (VDPAU acceleration)
DEVSDT mpeg2video MPEG-2 video
DEVSDT mpeg4 MPEG-4 part 2
D V DT mpeg4_vdpau MPEG-4 part 2 (VDPAU)
D V DT mpegvideo_vdpau MPEG-1/2 video (VDPAU acceleration)
D VSDT mpegvideo_xvmc MPEG-1/2 video XvMC (X-Video Motion Compensation)
DEVSD msmpeg4 MPEG-4 part 2 Microsoft variant version 3
D VSD msmpeg4v1 MPEG-4 part 2 Microsoft variant version 1
DEVSD msmpeg4v2 MPEG-4 part 2 Microsoft variant version 2
D V D msrle Microsoft RLE
D V D msvideo1 Microsoft Video 1
D V D mszh LCL (LossLess Codec Library) MSZH
D V D mxpeg Mobotix MxPEG video
DEA D nellymoser Nellymoser Asao
D V D nuv NuppelVideo/RTJPEG
DEV D pam PAM (Portable AnyMap) image
DEV D pbm PBM (Portable BitMap) image
D A D pcm_alaw PCM A-law
D A D pcm_bluray PCM signed 16|20|24-bit big-endian for Blu-ray media
D A D pcm_dvd PCM signed 20|24-bit big-endian
D A D pcm_f32be PCM 32-bit floating point big-endian
D A D pcm_f32le PCM 32-bit floating point little-endian
D A D pcm_f64be PCM 64-bit floating point big-endian
D A D pcm_f64le PCM 64-bit floating point little-endian
D A D pcm_lxf PCM signed 20-bit little-endian planar
D A D pcm_mulaw PCM mu-law
D A D pcm_s16be PCM signed 16-bit big-endian
D A D pcm_s16le PCM signed 16-bit little-endian
D A D pcm_s16le_planar PCM 16-bit little-endian planar
D A D pcm_s24be PCM signed 24-bit big-endian
D A D pcm_s24daud PCM D-Cinema audio signed 24-bit
D A D pcm_s24le PCM signed 24-bit little-endian
D A D pcm_s32be PCM signed 32-bit big-endian
D A D pcm_s32le PCM signed 32-bit little-endian
D A D pcm_s8 PCM signed 8-bit
D A D pcm_s8_planar PCM signed 8-bit planar
D A D pcm_u16be PCM unsigned 16-bit big-endian
D A D pcm_u16le PCM unsigned 16-bit little-endian
D A D pcm_u24be PCM unsigned 24-bit big-endian
D A D pcm_u24le PCM unsigned 24-bit little-endian
D A D pcm_u32be PCM unsigned 32-bit big-endian
D A D pcm_u32le PCM unsigned 32-bit little-endian
D A D pcm_u8 PCM unsigned 8-bit
D A D pcm_zork PCM Zork
DEV D pcx PC Paintbrush PCX image
DEV D pgm PGM (Portable GrayMap) image
DEV D pgmyuv PGMYUV (Portable GrayMap YUV) image
D S pgssub HDMV Presentation Graphic Stream subtitles
D V D pictor Pictor/PC Paint
DEV D png PNG image
DEV D ppm PPM (Portable PixelMap) image
D V D prores Apple ProRes (iCodec Pro)
D V D ptx V.Flash PTX image
D A D qcelp QCELP / PureVoice
D A D qdm2 QDesign Music Codec 2
D V D qdraw Apple QuickDraw
D V D qpeg Q-team QPEG
DEV D qtrle QuickTime Animation (RLE) video
D V D r10k AJA Kona 10-bit RGB Codec
D V D r210 Uncompressed RGB 10-bit
DEV rawvideo raw video
DEA D real_144 RealAudio 1.0 (14.4K) encoder
D A D real_288 RealAudio 2.0 (28.8K)
D V D rl2 RL2 video
DEA D roq_dpcm id RoQ DPCM
DEV D roqvideo id RoQ video
D V D rpza QuickTime video (RPZA)
DEV D rv10 RealVideo 1.0
DEV D rv20 RealVideo 2.0
D V D rv30 RealVideo 3.0
D V D rv40 RealVideo 4.0
D A D s302m SMPTE 302M
DEV sgi SGI image
D A D shorten Shorten
D A D sipr RealAudio SIPR / ACELP.NET
D A D smackaud Smacker audio
D V D smackvid Smacker video
D V D smc QuickTime Graphics (SMC)
DEV D snow Snow
D A D sol_dpcm DPCM Sol
D V D sp5x Sunplus JPEG (SP5X)
D S srt SubRip subtitle
D V D sunrast Sun Rasterfile image
DEV D svq1 Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
D VSD svq3 Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3
DEV D targa Truevision Targa image
D VSD theora Theora
D V D thp Nintendo Gamecube THP video
D V D tiertexseqvideo Tiertex Limited SEQ video
DEV D tiff TIFF image
D V D tmv 8088flex TMV
D A D truehd TrueHD
D V D truemotion1 Duck TrueMotion 1.0
D V D truemotion2 Duck TrueMotion 2.0
D A D truespeech DSP Group TrueSpeech
D A D tta True Audio (TTA)
D A D twinvq VQF TwinVQ
D V D txd Renderware TXD (TeXture Dictionary) image
D V D ultimotion IBM UltiMotion
D V D utvideo Ut Video
DEV D v210 Uncompressed 4:2:2 10-bit
D V D v210x Uncompressed 4:2:2 10-bit
DEV D v410 Uncompressed 4:4:4 10-bit
D V vb Beam Software VB
D V D vble VBLE Lossless Codec
D V D vc1 SMPTE VC-1
D V D vc1_vdpau SMPTE VC-1 VDPAU
D V D vc1image Windows Media Video 9 Image v2
D V D vcr1 ATI VCR1
D A D vmdaudio Sierra VMD audio
D V D vmdvideo Sierra VMD video
D V D vmnc VMware Screen Codec / VMware Video
DEA D vorbis Vorbis
D VSD vp3 On2 VP3
D V D vp5 On2 VP5
D V D vp6 On2 VP6
D V D vp6a On2 VP6 (Flash version, with alpha channel)
D V D vp6f On2 VP6 (Flash version)
D V D vp8 On2 VP8
D V D vqavideo Westwood Studios VQA (Vector Quantized Animation) video
D A D wavpack WavPack
D A D wmapro Windows Media Audio 9 Professional
DEA D wmav1 Windows Media Audio 1
DEA D wmav2 Windows Media Audio 2
D A D wmavoice Windows Media Audio Voice
DEVSD wmv1 Windows Media Video 7
DEVSD wmv2 Windows Media Video 8
D V D wmv3 Windows Media Video 9
D V D wmv3_vdpau Windows Media Video 9 VDPAU
D V D wmv3image Windows Media Video 9 Image
D V D wnv1 Winnov WNV1
D A D ws_snd1 Westwood Audio (SND1)
D A D xan_dpcm DPCM Xan
D V D xan_wc3 Wing Commander III / Xan
D V D xan_wc4 Wing Commander IV / Xxan
D V D xl Miro VideoXL
DES xsub DivX subtitles (XSUB)
D V yop Psygnosis YOP Video
DEV D zlib LCL (LossLess Codec Library) ZLIB
DEV D zmbv Zip Motion Blocks Video
Note, the names of encoders and decoders do not always match, so there are
several cases where the above table shows encoder only or decoder only entries
even though both encoding and decoding are supported. For example, the h263
decoder corresponds to the h263 and h263p encoders, for file formats it is even
worse.
仍然没有E为 mp3 提供 ncoding。（我会放弃这种格式，但两个设备只使用它）
因此我还是尝试使用ffmpeg。
sellout$ ffmpeg -formats | grep mp3
ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Apr 2 2013 17:00:59 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
DE mp3 MPEG audio layer 3
太棒了。它说它可以编码和解码 mp3。
sellout$ for f in *wav; do ffmpeg -i "$f" -f mp3 "$f.mp3"; done
ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Apr 2 2013 17:00:59 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[wav @ 0x8525aa0] max_analyze_duration reached
Input #0, wav, from 'Track 10.wav':
Metadata:
encoder : gvfs-cdda using libcdio 0.83 i686-pc-linux-gnu
Duration: 00:01:09.73, bitrate: 1411 kb/s
Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
File 'Track 10.wav.mp3' already exists. Overwrite ? [y/N] y
Output #0, mp3, to 'Track 10.wav.mp3':
Stream #0.0: Audio: [0][0][0][0] / 0x0000, 44100 Hz, 2 channels, s16, 200 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Encoder (codec id 86017) not found for output stream #0.0
显然它撒了谎...发生了什么事？我完全搞不懂。我以前只是简单地调用ffmpeg -i input.wav output.mp3，在以前的 ubuntu 版本上一切都正常。
答案1
您需要安装包含对其他libavcodec-extra-53编码器和解码器的支持的软件包。在 12.04 中，这些是：、、、、、和。libdirac安装或软件包不会有任何作用。较旧或较新 Ubuntu 版本的用户可能会拥有不同于的版本号。libmp3lamelibopenjpeglibvo_aacenclibvo_amrwbenclibx264libxvidlamelibmp3lame053
以下命令足以满足所有当前支持的 Ubuntu 版本：
sudo apt-get install libavcodec-extra-*
请注意，“弃用”消息仅指分叉的 Libav 版本，而不是仍然使用ffmpeg的原始 FFmpeg 版本ffmpeg很活跃正在开发中。请参阅谁能告诉我ffmpeg，libav和avconv之间的区别和关系？为了澄清。
答案2
我的 avconv 有其唯一的 MP3 编码器，形式为包libmp3lame0。