Hi, I tried MLP/trueHD audio encoding in CinGG, but it was failing even with "strict -2" set in option files, probably need this patch: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/808a6717e0c584738c60a109afd6... avformat/movenc: add muxing support for Dolby TrueHD streams committer James Almer <[email protected]> Sun, 25 Aug 2019 04:42:34 +0300 (22:42 -0300) DCA stuff apparently working: mplayer /dev/shm/div3.qt -quiet MPlayer SVN-r38152-5.5.0 (C) 2000-2019 MPlayer Team 224 audio & 466 video codecs Playing /dev/shm/div3.qt. libavformat version 58.33.100 (internal) libavformat file format detected. [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5756f9e0]Protocol name not provided, cannot determine if input is local or a network protocol, buffers and access patterns cannot be configured optimally without knowing the protocol [lavf] stream 0: video (msmpeg4), -vid 0 [lavf] stream 1: audio (dca), -aid 0, -alang rus VIDEO: [3IVD] 720x400 24bpp 25.000 fps 2182.0 kbps (266.4 kbyte/s) ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family libavcodec version 58.59.102 (internal) Selected video codec: [ffdivx] vfm: ffmpeg (FFmpeg DivX ;-) (MSMPEG-4 v3)) ========================================================================== Clip info: major_brand: qt minor_version: 512 compatible_brands: qt encoder: Lavf58.29.100 Load subtitles in /dev/shm/ ========================================================================== Forced audio codec: mad Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders AUDIO: 48000 Hz, 2 ch, floatle, 1411.2 kbit/45.94% (ratio: 176400->384000) Selected audio codec: [ffdca] afm: ffmpeg (FFmpeg DTS) ========================================================================== AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample) Starting playback... Movie-Aspect is 1.80:1 - prescaling to correct movie aspect. VO: [vdpau] 720x400 => 720x400 Planar YV12 Movie-Aspect is 1.80:1 - prescaling to correct movie aspect. VO: [vdpau] 720x400 => 720x400 Planar YV12 Exiting... (End of file) https://en.wikipedia.org/wiki/Dolby_TrueHD - lossless multichannel codec https://forum.doom9.org/showthread.php?p=1862941 - doom9 thread from early 2019 https://en.wikipedia.org/wiki/DTS_(sound_system) saw it used on few DVDs ....