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    25 avril 2011, par

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    To get a working installation, you must manually install all-software dependencies on the server.
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    5 septembre 2013, par

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  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

Sur d’autres sites (10164)

  • encoding with ffmpeg libx265 -pix_fmt gray gives unplayable vid

    9 juin 2017, par netjiro

    What am I missing ?
    I encode an old black and white film clip with ffmpeg libx265 passing -pix_fmt gray. The output is unplayable in both vlc and mplayer (linux), so I assume I’m missing something...

    encoding :

    ffmpeg -i clip.mkv \
    
    -c:v libx265 -preset slow -x265-params "crf=24" -pix_fmt gray \
    
    -c:a libopus -b:a 64k \
    
    -c:s copy \
    
    out.mkv

    vlc errors :

    [00007f8a3ddfe328] blend blend error: no matching alpha blending routine (chroma: RGBA -> GREY)
    
[00007f8a3ddfe328] core blend error: blending RGBA to GREY failed
    
... repeated ...

    mplayer errors :

    Unexpected decoder output format Planar Y800
    
... repeated ...

    ffmpeg encoding output :

    ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 4.9.4 (Gentoo 4.9.4 p1.0, pie-0.6.4)
    
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --docdir=/usr/share/doc/ffmpeg-3.2.4/html --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-march=native -O2 -pipe' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-nonfree --enable-version3 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-version3 --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt --disable-gnutls --disable-gmp --enable-gpl --enable-hardcoded-tables --enable-iconv --enable-lzma --enable-network --enable-openssl --enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl2 --enable-vaapi --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --enable-openal --enable-opengl --enable-libv4l2 --disable-libpulse --enable-libopencore-amrwb --enable-libopencore-amrnb --disable-libfdk-aac --enable-libopenjpeg --enable-libbluray --enable-libcelt --disable-libgme --disable-libgsm --disable-mmal --enable-libmodplug --enable-libopus --disable-libilbc --disable-librtmp --enable-libssh --enable-libschroedinger --enable-libspeex --enable-libvorbis --enable-libvpx --disable-libzvbi --disable-libbs2b --disable-chromaprint --disable-libebur128 --disable-libflite --disable-frei0r --disable-libfribidi --enable-fontconfig --disable-ladspa --disable-libass --enable-libfreetype --disable-librubberband --disable-libzimg --enable-libsoxr --enable-pthreads --enable-libvo-amrwbenc --enable-libmp3lame --disable-libkvazaar --disable-nvenc --disable-libopenh264 --enable-libsnappy --enable-libtheora --enable-libtwolame --enable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --disable-amd3dnow --disable-amd3dnowext --disable-fma4 --disable-xop --cpu=host --disable-doc --disable-htmlpages --enable-manpages
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
x265 [info]: HEVC encoder version 2.2
    
x265 [info]: build info [Linux][GCC 4.9.4][64 bit] 8bit+10bit+12bit
    
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
    
x265 [info]: Unknown profile, Level-3.1 (Main tier)
    
x265 [warning]: No thread pool allocated, --wpp disabled
    
x265 [warning]: No thread pool allocated, --lookahead-slices disabled
    
x265 [info]: Slices                              : 1
    
x265 [info]: frame threads / pool features       : 3 / none
    
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         : star / 57 / 3 / 3
    
x265 [info]: Keyframe min / max / scenecut / bias: 23 / 250 / 40 / 5.00
    
x265 [info]: Lookahead / bframes / badapt        : 25 / 4 / 2
    
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
    
x265 [info]: References / ref-limit  cu / depth  : 4 / 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: rect limit-modes rd=4 psy-rd=2.00 rdoq=2 psy-rdoq=1.00
    
x265 [info]: tools: rskip signhide tmvp strong-intra-smoothing deblock sao
    
Output #0, matroska, to 'out.mkv':
    
  Metadata:
    
    encoder         : Lavf57.56.101
    
    Metadata:
    
    Stream #0:0(eng): Video: hevc (libx265), gray, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 1k tbn, 23.98 tbc (default)
    
    Metadata:
    
      encoder         : Lavc57.64.101 libx265
    
    Stream #0:1(eng): Audio: opus (libopus) ([255][255][255][255] / 0xFFFFFFFF), 48000 Hz, stereo, flt, 64 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc57.64.101 libopus
    
    Stream #0:2(eng): Subtitle: subrip (default)
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
    
  Stream #0:1 -> #0:1 (eac3 (native) -> opus (libopus))
    
  Stream #0:3 -> #0:2 (copy)
    
Press [q] to stop, [?] for help
    
frame= 1439 fps=7.0 q=-0.0 Lsize=    5356kB time=00:01:00.01 bitrate= 731.1kbits/s speed=0.294x    
    
video:4940kB audio:382kB subtitle:1kB other streams:0kB global headers:2kB muxing overhead: 0.629434%
    
x265 [info]: frame I:      9, Avg QP:22.27  kb/s: 6064.82 
    
x265 [info]: frame P:    340, Avg QP:23.62  kb/s: 1950.21 
    
x265 [info]: frame B:   1090, Avg QP:29.65  kb/s: 230.75  
    
x265 [info]: Weighted P-Frames: Y:0.9% UV:0.0%
    
x265 [info]: consecutive B-frames: 2.9% 0.3% 1.4% 72.5% 22.9%

  • Streaming audio + still image using ffmpeg

    21 juin 2017, par AEnimaH

    I’m streaming an audio source to azure media services using RTMP and a raspberry pi. This works great using this command :

    ffmpeg -f alsa -ac 1 -i hw:1,0 -c:a aac -b:a 128k -ar 44100 -f flv rtmp://...

    But know we want to add an image to this flv container because azure media player wants a video component.

    So I added video using this command :

    ffmpeg -loop 1 -i image.png -f alsa -ac 1 -i hw:1,0 -c:a aac -b:a 128k -ar 44100 -g 50 -pix_fmt yuv420p -f flv rtmp://...

    Yet it crashes with following log :

    ffmpeg version N-86429-gf8593c2 Copyright (c) 2000-2017 the FFmpeg developers
    
built with gcc 4.9.2 (Raspbian 4.9.2-10)
    
configuration: --prefix=/home/pi/ffmpeg/dependencies/output --enable-gpl --enable-libx264 --enable-libmp3lame --enable-nonfree --extra-cflags=-I/home/pi/ffmpeg/dependencies/output/include --extra-ldflags=-L/home/pi/ffmpeg/dependencies/output/lib --extra-libs='-lx264 -lpthread -lm -ldl'
    
libavutil      55. 63.100 / 55. 63.100
    
libavcodec     57. 98.100 / 57. 98.100
    
libavformat    57. 73.100 / 57. 73.100
    
libavdevice    57.  7.100 / 57.  7.100
    
libavfilter     6. 91.100 /  6. 91.100
    
libswscale      4.  7.101 /  4.  7.101
    
libswresample   2.  8.100 /  2.  8.100
    
libpostproc    54.  6.100 / 54.  6.100
    
Input #0, png_pipe, from 'image.png':
    
Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: png, rgba(pc), 600x400 [SAR 5669:5669 DAR 3:2], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
Guessed Channel Layout for Input Stream #1.0 : mono
    
Input #1, alsa, from 'hw:1,0':
    
Duration: N/A, start: 1497522851.947685, bitrate: 768 kb/s
    
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
    
Stream mapping:
    
Stream #0:0 -> #0:0 (png (native) -> flv1 (flv))
    
Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[alsa @ 0x18e3330] Thread message queue blocking; consider raising the thread_queue_size option (current value: :sunglasses:
    
Output #0, flv, to 'rtmp://aptus2-aptus.channel.mediaservices.windows.net:1935/live/b962f6df8d3b4e97a608981d019faaa4/default':
    
Metadata:
    
    encoder         : Lavf57.73.100
    
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p(progressive), 600x400 [SAR 1:1 DAR 3:2], q=2-31, 200 kb/s, 25 fps, 1k tbn, 25 tbc
    
    Metadata:
    
    encoder         : Lavc57.98.100 flv
    
    Side data:
    
    cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 44100 Hz, mono, fltp, 128 kb/s
    
    Metadata:
    
    encoder         : Lavc57.98.100 aac
    
frame=    3 fps=0.0 q=2.0 size=      56kB time=00:00:00.08 bitrate=5700.0kbits/sframe=   12 fps= 12 q=2.0 size=      66kB time=00:00:00.44 bitrate=1227.2kbits/sframe=   21 fps= 14 q=2.0 size=      72kB time=00:00:00.80 bitrate= 739.8kbits/sframe=   29 fps= 14 q=2.0 size=      79kB time=00:00:01.12 bitrate= 573.9kbits/s[alsa @ 0x18e3330] ALSA buffer xrun.
    
frame=   39 fps= 15 q=2.0 size=      85kB time=00:00:02.81 bitrate= 246.9kbits/sframe=   50 fps= 16 q=2.0 size=      86kB time=00:00:02.81 bitrate= 251.4kbits/sframe=   60 fps= 17 q=2.0 size=     157kB time=00:00:02.81 bitrate= 457.1kbits/sframe=   71 fps= 17 q=2.0 size=     159kB time=00:00:02.81 bitrate= 462.2kbits/s[alsa @ 0x18e3330] ALSA buffer xrun.
    
frame=   81 fps= 18 q=2.0 size=     161kB time=00:00:04.57 bitrate= 289.0kbits/sframe=   92 fps= 18 q=2.0 size=     163kB time=00:00:04.57 bitrate= 291.8kbits/sframe=  103 fps= 18 q=2.0 size=     234kB time=00:00:04.57 bitrate= 418.5kbits/sframe=  114 fps= 19 q=2.0 size=     235kB time=00:00:04.57 bitrate= 421.3kbits/s[alsa @ 0x18e3330] ALSA buffer xrun.
    
frame=  124 fps= 19 q=2.0 size=     238kB time=00:00:06.66 bitrate= 292.8kbits/sframe=  135 fps= 19 q=2.0 size=     240kB time=00:00:06.66 bitrate= 294.7kbits/sframe=  146 fps= 19 q=2.0 size=     241kB time=00:00:06.66 bitrate= 296.6kbits/sav_interleaved_write_frame(): Broken pipe
    
[flv @ 0x18f9ea0] Failed to update header with correct duration.
    
[flv @ 0x18f9ea0] Failed to update header with correct filesize.
    
Error writing trailer of rtmp://aptus2-aptus.channel.mediaservices.windows.net:1935/live/b962f6df8d3b4e97a608981d019faaa4/default: Broken pipe
    
frame=  151 fps= 15 q=1.6 Lsize=     306kB time=00:00:06.70 bitrate= 373.5kbits/s speed=0.644x    
    
video:284kB audio:24kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
[aac @ 0x18fe6e0] Qavg: 3428.370
    
Conversion failed!

    what am I doing wrong ? Any help would be awesome !

  • FFMpeg is dropping video track when clipping an mpg video

    16 juin 2017, par M. Grishaber

    I am extracting a clip from an mpg video using the following command.
    ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg

    I am using the copy parameter to avoid reencoding the clip.
    The resulting mpg file only has the audio track, no video.
    The following is the FFMpeg screen dump.

    C:\ffmpeg-20170615\bin>ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg
    
    ffmpeg version N-86482-gbc40674 Copyright (c) 2000-2017 the FFmpeg developers
    
      built with gcc 7.1.0 (GCC)
    
      configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
    
      libavutil      55. 66.100 / 55. 66.100
    
      libavcodec     57. 99.100 / 57. 99.100
    
      libavformat    57. 73.100 / 57. 73.100
    
      libavdevice    57.  7.100 / 57.  7.100
    
      libavfilter     6. 92.100 /  6. 92.100
    
      libswscale      4.  7.101 /  4.  7.101
    
      libswresample   2.  8.100 /  2.  8.100
    
      libpostproc    54.  6.100 / 54.  6.100
    
    Input #0, mpeg, from '271b.mpg':
    
      Duration: 00:01:11.44, start: 0.460000, bitrate: 2154 kb/s
    
        Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
        Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    [mpeg @ 0000000000666aa0] VBV buffer size not set, using default size of 130KB
    
    If you want the mpeg file to be compliant to some specification
    
    Like DVD, VCD or others, make sure you set the correct buffer size
    
    Output #0, mpeg, to 'out_271b.mpg':
    
      Metadata:
    
        encoder         : Lavf57.73.100
    
        Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
        Stream #0:1: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (copy)
    
      Stream #0:1 -> #0:1 (copy)
    
    Press [q] to stop, [?] for help
    
    frame=   74 fps=0.0 q=-1.0 Lsize=     786kB time=00:00:03.17 bitrate=2027.2kbits/s speed= 198x
    
    video:730kB audio:50kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.843343%

    Thanks

    Addition : I tried to open the generated clip file with ffplay and got the following results. Note that ffplay was able to open and play the original mpg file.

    ffplay.exe out_271b.mpg
    
ffplay version N-86482-gbc40674 Copyright (c) 2003-2017 the FFmpeg developers
    
  built with gcc 7.1.0 (GCC)
    
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
    
  libavutil      55. 66.100 / 55. 66.100
    
  libavcodec     57. 99.100 / 57. 99.100
    
  libavformat    57. 73.100 / 57. 73.100
    
  libavdevice    57.  7.100 / 57.  7.100
    
  libavfilter     6. 92.100 /  6. 92.100
    
  libswscale      4.  7.101 /  4.  7.101
    
  libswresample   2.  8.100 /  2.  8.100
    
  libpostproc    54.  6.100 / 54.  6.100
    
[mpeg @ 00000000023cde80] probed stream 2 failedB sq=    0B f=0/0
    
[mpeg @ 00000000023cde80] start time for stream 0 is not set in estimate_timings_from_pts
    
[mpeg @ 00000000023cde80] Could not find codec parameters for stream 2 (Video: none, none): unknown codec
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, mpeg, from 'out_271bb.mpg':
    
  Duration: 00:00:03.22, start: 0.500000, bitrate: 2068 kb/s
    
    Stream #0:0[0x1bf]: Data: dvd_nav_packet  0KB sq=    0B f=0/0
    
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
    
    Stream #0:2[0x1e0]: Video: none, none, 25 fps, 25 tbr, 90k tbn
    
SDL_OpenAudio (1 channels, 44100 Hz): DirectSoundCreate: No audio device found
    
No more combinations to try, audio open failed
    
No codec could be found with id 0
    
Failed to open file 'out_271b.mpg' or configure filtergraph

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