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cat 1.mp4 | ffmpeg -hide_banner  -i -  -c:a aac -strict -2  -c:s copy -c:v libx265 -preset medium  -x265-params crf=24:ref=5:rd=5:rdoq-level=1:psy-rd=3:psy-rdoq=10 -f matroska - | cat > 2.mkv
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55ad9fe16060] stream 1, offset 0x20: partial file
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55ad9fe16060] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 1920x1080, 17012 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'pipe:':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2016-05-01T15:30:57.000000Z
  Duration: 00:00:33.05, bitrate: N/A
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 1920x1080, 17012 kb/s, 30.02 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : SoundHandle
[buffer @ 0x55ad9fe4fe80] Unable to parse option value "-1" as pixel format
    Last message repeated 1 times
[buffer @ 0x55ad9fe4fe80] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:0 @ 0x55ad9fe4fd80] Error applying options to the filter.
Error opening filters!

ffmpeg -hide_banner  -i 1.mp4  -c:a aac -strict -2  -c:s copy -c:v libx265 -preset medium  -x265-params crf=24:ref=5:rd=5:rdoq-level=1:psy-rd=3:psy-rdoq=10 -f matroska - | cat > 2.mkv
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2016-05-01T15:30:57.000000Z
  Duration: 00:00:33.05, start: 0.000000, bitrate: 17058 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17012 kb/s, 30.02 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : SoundHandle
x265 [info]: HEVC encoder version 0.0
x265 [info]: build info [Linux][GCC 6.3.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x265 [info]: Main profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices                              : 1
x265 [info]: frame threads / pool features       : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 2
x265 [info]: Keyframe min / max / scenecut       : 25 / 250 / 40
x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 5 / on / on
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 1 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress            : CRF-24.0 / 0.60
x265 [info]: tools: rd=5 psy-rd=3.00 rdoq=1 psy-rdoq=10.00 rskip signhide tmvp
x265 [info]: tools: strong-intra-smoothing lslices=6 deblock sao
Output #0, matroska, to 'pipe:':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    encoder         : Lavf57.56.101
    Stream #0:0(eng): Video: hevc (libx265), yuv420p, 1920x1080, q=2-31, 30 fps, 1k tbn, 30 tbc (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : VideoHandle
      encoder         : Lavc57.64.101 libx265
    Stream #0:1(eng): Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2016-05-01T15:30:57.000000Z
      handler_name    : SoundHandle
      encoder         : Lavc57.64.101 aac
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
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cat zdroj| ssh server "ffmpeg" | cat > cil