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    avthumb参数acodec格式及解释

    最近更新时间:2017-08-28 15:14:41

    http://developer.qiniu.com/code/v6/api/dora-api/av/avthumb.html

    参数 /acodec/<AudioCodec>:音频编码方案,支持方案:libmp3lame , libfaac , libvorbis ,libfdk_aac 等。

    audioEncoders description
    aac AAC (Advanced Audio Coding)
    libfaac
    ac3 ATSC A/52A (AC-3)
    ac3_fixed ATSC A/52A (AC-3) (codec ac3)
    adpcm_adx SEGA CRI ADX ADPCM
    g722 G.722 ADPCM (codec adpcm_g722)
    g726 G.726 ADPCM (codec adpcm_g726)
    adpcm_ima_qt ADPCM IMA QuickTime
    adpcm_ima_wav ADPCM IMA WAV
    adpcm_ms ADPCM Microsoft
    adpcm_swf ADPCM Shockwave Flash
    adpcm_yamaha ADPCM Yamaha
    alac ALAC (Apple Lossless Audio Codec)
    libopencore_amrnb OpenCORE AMR-NB (Adaptive Multi-Rate Narrow-Band) (codec amr_nb)
    comfortnoise RFC 3389 comfort noise generator
    dca DCA (DTS Coherent Acoustics) (codec dts)
    eac3 ATSC A/52 E-AC-3
    flac FLAC (Free Lossless Audio Codec)
    g723_1 G.723.1
    libilbc iLBC (Internet Low Bitrate Codec) (codec ilbc)
    mp2 MP2 (MPEG audio layer 2)
    libmp3lame libmp3lame MP3 (MPEG audio layer 3) (codec mp3)
    nellymoser Nellymoser Asao
    pcm_alaw PCM A-law / G.711 A-law
    pcm_f32be PCM 32-bit floating point big-endian
    pcm_f32le PCM 32-bit floating point little-endian
    pcm_f64be PCM 64-bit floating point big-endian
    pcm_f64le PCM 64-bit floating point little-endian
    pcm_mulaw PCM mu-law / G.711 mu-law
    pcm_s16be PCM signed 16-bit big-endian
    pcm_s16be_planar PCM signed 16-bit big-endian planar
    pcm_s16le PCM signed 16-bit little-endian
    pcm_s16le_planar PCM signed 16-bit little-endian planar
    pcm_s24be PCM signed 24-bit big-endian
    pcm_s24daud PCM D-Cinema audio signed 24-bit
    pcm_s24le PCM signed 24-bit little-endian
    pcm_s24le_planar PCM signed 24-bit little-endian planar
    pcm_s32be PCM signed 32-bit big-endian
    pcm_s32le PCM signed 32-bit little-endian
    pcm_s32le_planar PCM signed 32-bit little-endian planar
    pcm_s8 CM signed 8-bit
    pcm_s8_planar PCM signed 8-bit planar
    pcm_u16be PCM unsigned 16-bit big-endian
    pcm_u16le PCM unsigned 16-bit little-endian
    pcm_u24be PCM unsigned 24-bit big-endian
    pcm_u24le PCM unsigned 24-bit little-endian
    pcm_u32be PCM unsigned 32-bit big-endian
    pcm_u32le PCM unsigned 32-bit little-endian
    pcm_u8 PCM unsigned 8-bit
    real_144 RealAudio 1.0 (14.4K) (codec ra_144)
    roq_dpcm id RoQ DPCM
    s302m SMPTE 302M
    sonic Sonic
    sonicls Sonic lossless
    tta TTA (True Audio)
    vorbis Vorbis
    libvorbis ibvorbis (codec vorbis)
    wavpack 无损音频压缩格式
    wmav1 Windows Media Audio 1
    wmav2 Windows Media Audio 2
    copy 编码同原始音频
    以上内容是否对您有帮助?
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