将amr转为语音板卡可以播放的alaw编码的wav文件
ffmpeg -i YY20121129_023829.amr -acodec pcm_alaw yuyin2.wav
其他可用编码器
用命令查看
ffmpeg -encoders
V..... a64multi Multicolor charset for Commodore 64 (codec a64_multi)
V..... a64multi5 Multicolor charset for Commodore 64, extended with 5th color (colram) (codec a64_multi5)
V..... amv AMV Video
V..... asv1 ASUS V1
V..... asv2 ASUS V2
V..... avrp Avid 1:1 10-bit RGB Packer
V..X.. avui Avid Meridien Uncompressed
V..... ayuv Uncompressed packed MS 4:4:4:4
V..... bmp BMP (Windows and OS/2 bitmap)
V..... cljr Cirrus Logic AccuPak
V.S... dnxhd VC3/DNxHD
V..... dpx DPX image
V.S... dvvideo DV (Digital Video)
V.S... ffv1 FFmpeg video codec #1
V..... ffvhuff Huffyuv FFmpeg variant
V..... flashsv Flash Screen Video
V..... flashsv2 Flash Screen Video Version 2
V..... flv FLV / Sorenson Spark / Sorenson H.263 (Flash Video) (codec flv1)
V..... gif GIF (Graphics Interchange Format)
V..... h261 H.261
V..... h263 H.263 / H.263-1996
V.S... h263p H.263+ / H.263-1998 / H.263 version 2
V..... huffyuv Huffyuv / HuffYUV
V..X.. j2k JPEG 2000 (codec jpeg2000)
V..... jpegls JPEG-LS
V..... ljpeg Lossless JPEG
VFS... mjpeg MJPEG (Motion JPEG)
V..... mpeg1video MPEG-1 video
V.S... mpeg2video MPEG-2 video
V.S... mpeg4 MPEG-4 part 2
V..... msmpeg4v2 MPEG-4 part 2 Microsoft variant version 2
V..... msmpeg4 MPEG-4 part 2 Microsoft variant version 3 (codec msmpeg4v3)
V..... msvideo1 Microsoft Video-1
V..... pam PAM (Portable AnyMap) image
V..... pbm PBM (Portable BitMap) image
V..... pcx PC Paintbrush PCX image
V..... pgm PGM (Portable GrayMap) image
V..... pgmyuv PGMYUV (Portable GrayMap YUV) image
VF.... png PNG (Portable Network Graphics) image
V..... ppm PPM (Portable PixelMap) image
VF.... prores Apple ProRes
VF.... prores_anatoliy Apple ProRes (codec prores)
V.S... prores_kostya Apple ProRes (iCodec Pro) (codec prores)
V..... qtrle QuickTime Animation (RLE) video
V..... r10k AJA Kona 10-bit RGB Codec
V..... r210 Uncompressed RGB 10-bit
V..... rawvideo raw video
V..... roqvideo id RoQ video (codec roq)
V..... rv10 RealVideo 1.0
V..... rv20 RealVideo 2.0
V..... sgi SGI image
V..... snow Snow
V..... sunrast Sun Rasterfile image
V..... svq1 Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
V..... targa Truevision Targa image
V..... tiff TIFF image
V..... utvideo Ut Video
V..... v210 Uncompressed 4:2:2 10-bit
V..... v308 Uncompressed packed 4:4:4
V..... v408 Uncompressed packed QT 4:4:4:4
V..... v410 Uncompressed 4:4:4 10-bit
V..... wmv1 Windows Media Video 7
V..... wmv2 Windows Media Video 8
V..... xbm XBM (X BitMap) image
V..... xwd XWD (X Window Dump) image
V..... y41p Uncompressed YUV 4:1:1 12-bit
V..... yuv4 Uncompressed packed 4:2:0
V..... zlib LCL (LossLess Codec Library) ZLIB
V..... zmbv Zip Motion Blocks Video
A..X.. aac AAC (Advanced Audio Coding)
A..... libfaac libfaac AAC (Advanced Audio Coding) (codec aac)
A..... ac3 ATSC A/52A (AC-3)
A..... ac3_fixed ATSC A/52A (AC-3) (codec ac3)
A..... adpcm_adx SEGA CRI ADX ADPCM
A..... g722 G.722 ADPCM (codec adpcm_g722)
A..... g726 G.726 ADPCM (codec adpcm_g726)
A..... adpcm_ima_qt ADPCM IMA QuickTime
A..... adpcm_ima_wav ADPCM IMA WAV
A..... adpcm_ms ADPCM Microsoft
A..... adpcm_swf ADPCM Shockwave Flash
A..... adpcm_yamaha ADPCM Yamaha
A..... alac ALAC (Apple Lossless Audio Codec)
A..... libopencore_amrnb OpenCORE AMR-NB (Adaptive Multi-Rate Narrow-Band) (codec amr_nb)
A..X.. dca DCA (DTS Coherent Acoustics) (codec dts)
A..... eac3 ATSC A/52 E-AC-3
A..... flac FLAC (Free Lossless Audio Codec)
A..... g723_1 G.723.1
A..... mp2 MP2 (MPEG audio layer 2)
A..... nellymoser Nellymoser Asao
A..... pcm_alaw PCM A-law / G.711 A-law
A..... pcm_f32be PCM 32-bit floating point big-endian
A..... pcm_f32le PCM 32-bit floating point little-endian
A..... pcm_f64be PCM 64-bit floating point big-endian
A..... pcm_f64le PCM 64-bit floating point little-endian
A..... pcm_mulaw PCM mu-law / G.711 mu-law
A..... pcm_s16be PCM signed 16-bit big-endian
A..... pcm_s16le PCM signed 16-bit little-endian
A..... pcm_s24be PCM signed 24-bit big-endian
A..... pcm_s24daud PCM D-Cinema audio signed 24-bit
A..... pcm_s24le PCM signed 24-bit little-endian
A..... pcm_s32be PCM signed 32-bit big-endian
A..... pcm_s32le PCM signed 32-bit little-endian
A..... pcm_s8 PCM signed 8-bit
A..... pcm_u16be PCM unsigned 16-bit big-endian
A..... pcm_u16le PCM unsigned 16-bit little-endian
A..... pcm_u24be PCM unsigned 24-bit big-endian
A..... pcm_u24le PCM unsigned 24-bit little-endian
A..... pcm_u32be PCM unsigned 32-bit big-endian
A..... pcm_u32le PCM unsigned 32-bit little-endian
A..... pcm_u8 PCM unsigned 8-bit
A..... real_144 RealAudio 1.0 (14.4K) (codec ra_144)
A..... roq_dpcm id RoQ DPCM
A..X.. sonic Sonic
A..X.. sonicls Sonic lossless
A..X.. vorbis Vorbis
A..... wmav1 Windows Media Audio 1
A..... wmav2 Windows Media Audio 2
S..... dvbsub DVB subtitles (codec dvb_subtitle)
S..... dvdsub DVD subtitles (codec dvd_subtitle)
S..... mov_text 3GPP Timed Text subtitle
S..... srt SubRip subtitle with embedded timing
S..... ass SSA (SubStation Alpha) subtitle (codec ssa)
S..... subrip SubRip subtitle
S..... xsub DivX subtitles (XSUB)