Mencoder – movie encoder software

Mencoder is a simple movie encoder, designed to encode MPlayer-playable movies (AVI/ASF/OGG/DVD/VCD/VOB/MPG/MOV/VIV/FLI/RM/NUV/NET) to other MPlayer-playable formats. It can encode with various codecs, like DivX4 (1 or 2 passes), libavcodec, PCM/MP3/VBRMP3 audio.

It also has stream copying and video resizing abilities.

Since it uses the same code as MPlayer, it also features the same huge number of highly-configurable video and audio filters to transform the video and audio stream.

Mencoder does not come with a graphical interface, and therefore some users may also want to use a graphical frontend.

Features include:

  • Wide support for Video and audio codecs:
    • Video:
      • MPEG-1 (VCD) and MPEG-2 (SVCD/DVD/DVB) video.
      • MPEG-4 ASP in all variants including DivX ;-), OpenDivX (DivX4), DivX 5 (Pro), Xvid.
      • MPEG-4 AVC aka H.264.
      • Windows Media Video 7/8 (WMV1/2).
      • Windows Media Video 9 (WMV3) (using x86 DLL).
      • RealVideo 1.0, 2.0 (G2).
      • RealVideo 3.0 (RP8), 4.0 (RP9) (using Real libraries).
      • Sorenson v1/v3 (SVQ1/SVQ3), Cinepak, RPZA and other QuickTime codecs.
      • DV video.
      • 3ivx.
      • Intel Indeo3 (3.1, 3.2).
      • Intel Indeo 4.1 and 5.0 (using x86 DLL or XAnim codecs).
      • VIVO 1.0, 2.0, I263 and other H.263(+) variants (using x86 DLL).
      • MJPEG, AVID, VCR2, ASV2 and other hardware formats.
      • FLI/FLC.
      • HuffYUV.
      • various old simple RLE-like formats.
    • Audio:
      • MPEG layer 1, 2, and 3 (MP3) audio.
      • AC3/A52 (Dolby Digital) audio (software or SP/DIF).
      • AAC (MPEG-4 audio).
      • WMA (DivX Audio) v1, v2.
      • WMA 9 (WMAv3), Voxware audio, etc (using x86 DLLs).
      • RealAudio: COOK, SIPRO, ATRAC3 (using Real libraries).
      • RealAudio: DNET and older codecs.
      • QuickTime: Qclp, Q-Design QDMC/QDM2, MACE 3/6 (using QT libraries), ALAC.
      • Ogg Vorbis audio.
      • VIVO audio (g723, Vivo Siren) (using x86 DLL).
      • alaw/ulaw, (ms)gsm, pcm, *adpcm and other simple old audio formats.
  • Stream copying.
  • Powerful filter system (crop, expand, flip, postprocess, rotate, scale, noise, RGB/YUV conversion).

Developer: Sergio Costas
License: GNU GPL v3


Mencoder is written in C. Learn C with our recommended free books and free tutorials.

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