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    Une file d’attente stockée dans la base de donnée
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Sur d’autres sites (5232)

  • FFmpeg can 'encode' to mp3, but will not accept an 'input' mp3

    21 novembre 2011, par Jonathan Coe

    FYI : Fedora 8 running on Amazon EC2...

    Having a difficult time with FFmpeg doing a (what should be pretty simple) conversion. I can get FFmpeg to encode an mp3 file from an m4a file using the following :

    ffmpeg -i file1.m4a -acodec libmp3lame -ab 160k file2.mp3

    However, I cannot get it to to convert an mp3 -> mp3, it responds with "Unknown Format" using the following :

    ffmpeg -i file1.mp3 -acodec libmp3lame -ab 160k file2.mp3

    I get the following command string :

    FFmpeg version UNKNOWN, Copyright (c) 2000-2008 Fabrice Bellard, et al.
    

    

    
configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include/ffmpeg --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libfaad --enable-libfaac --enable-libgsm --enable-libxvid --enable-libx264 --enable-liba52 --enable-liba52bin --enable-pp --enable-shared --enable-pthreads --enable-gpl --disable-strip
    
  libavutil version: 49.6.0
    
  libavcodec version: 51.50.1
    
  libavformat version: 52.7.0
    
  libavdevice version: 52.0.0
    
  built on Feb 14 2008 17:47:08, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33)
    
file1.mp3: Unknown format

    Any help would be hugely appreciated !

    Edit for clarity :
    The input file is in /ebs/queue/input.mp3 and the output is /ebs/converted/output.mp3

  • FFmpeg not encoding with libx264 library

    29 octobre 2011, par bOkeifus

    Hey people of StackOverflow. I have been having a strange issue that I'm not exactly sure what's going on. I am using FFmpeg to convert any incoming video files to h264 mp4 files using the libx264. This is the log that I get from running this line of code :

    ffmpeg -y -i vdoname.flv -acodec libfaac -vcodec libx264 -sameq vid.mp4

    This is the log output after running the line :

    FFmpeg version SVN-r13428, Copyright (c) 2000-2008 Fabrice Bellard, et al.
    
  configuration: --prefix=/usr --disable-static --enable-shared --enable-gpl --enable-nonfree --enable-pthreads --enable-liba52 --enable-liba52bin --enable-libamr-nb --enable-libamr-wb --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --disable-network --disable-ipv6 --disable-ffserver --disable-ffplay
    
  libavutil version: 49.6.0
    
  libavcodec version: 51.57.0
    
  libavformat version: 52.14.0
    
  libavdevice version: 52.0.0
    
  built on Feb 17 2009 09:01:13, gcc: 4.1.2 20071124 (Red Hat 4.1.2-42)
    

    
Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 49.92 (599/12)
    
Input #0, flv, from '/html/video/937.flv':
    
  Duration: 00:00:10.08, start: 0.000000, bitrate: 48 kb/s
    
    Stream #0.0: Video: flv, yuv420p, 720x480, 49.92 tb(r)
    
    Stream #0.1: Audio: mp3, 22050 Hz, stereo, 48 kb/s
    
Output #0, h264, to '/html/flvideo/new_937.mp4':
    
    Stream #0.0: Video: libx264, yuv420p, 720x480, q=2-31, 200 kb/s, 49.92 tb(c)
    
    Stream #0.1: Audio: libfaac, 22050 Hz, stereo, 64 kb/s
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
  Stream #0.1 -> #0.1
    
[libx264 @ 0x11d58b0]using cpu capabilities: MMX MMXEXT SSE SSE2 3DNow!
    
Press [q] to stop encoding

    Can someone please help me out and tell me what to do to get this to work ? I guessed that the libx264 external library is not installed but it doesn't exactly say that in the log file and it looks as if it does find it but then doesn't actually encode the video.

    Any and all help is greatly appreciated.

  • Using ffmpeg on Windows, what is the command to capture hardware encoded H264 stream from Logitech c930e

    2 mai 2015, par Jeff

    I am using ffmpeg on Windows 8 and I would like to capture the built-in H264 hardware encoded stream from the Logitech c930e camera. The H264 built-in encoded stream is part of the UVC 1.5 interface.

    Using this command I have noticed that the c930e exposes two video pins through DirectShow : 0 and 1.

    ffmpeg -report -list_options true -f dshow -i video="Logitech Webcam C930e"

    [dshow @ 0000000002d89360]  Pin "Capture" (alternative pin name "0")

    [dshow @ 0000000002d89360]  Pin "Capture" (alternative pin name "1")

    It doesn’t seem to matter if I choose Pin 0 or 1, I still get raw video from the Logitech c930e webcam. On Linux, the supposed command involves v4l2, but this does not appear to exist in the default Windows version of ffmpeg from http://ffmpeg.zeranoe.com/builds/

    Does the default Windows build of ffmpeg support the direct capture of the UVC interface ?

    This is the closest I have gotten on this journey, but still isn’t quite right :

    ffmpeg -report -f dshow -i video="Logitech Webcam C930e" -s 1920x1080 -r 30 -video_pin_name 1 -vcodec H264 -c copy -f mp4 Logitechc930eFeed.mp4

    As of April 17, 2015 I am still trying to figure this out and have two new pieces of info.

    I found this interesting article on Logitech’s website instructing the user to change the default Logitech driver to the generic USB Video Device driver :
    https://support.logitech.com/en_us/article/Install-native-UVC-drivers-for-your-Logitech-webcam?product=a0qi00000069v0MAAQ#

    I also found that my C930e had an older firmware (8.0.866), and Logitech recommends updating the firmware to 8.0.875 to fix an unspecified UVC H.264 issue.

    So now I have the latest firmware, and am using the generic "USB Video Device" on Windows 8.1.

    ffmpeg -list_devices true -f dshow -i

    which gives this output :

    ffmpeg version N-69608-g9dc45d1 Copyright (c) 2000-2015 the FFmpeg developers
     built with gcc 4.9.2 (GCC)
     configuration: --enable-gpl --enable-version3 --disable-w32threads --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-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
     libavutil      54. 18.100 / 54. 18.100
     libavcodec     56. 21.102 / 56. 21.102
     libavformat    56. 19.100 / 56. 19.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5.  9.103 /  5.  9.103
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  1.100 /  1.  1.100
     libpostproc    53.  3.100 / 53.  3.100
    [dshow @ 00000000045c9360] DirectShow video devices (some may be both video and audio devices)
    [dshow @ 00000000045c9360]  "Logitech Webcam C930e"
    [dshow @ 00000000045c9360]     Alternative name "@device_pnp_\\?\usb#vid_046d&pid_0843&mi_00#7&3693c0e6&1&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
    [dshow @ 00000000045c9360] DirectShow audio devices
    [dshow @ 00000000045c9360]  "Microphone (Logitech Webcam C930e)"
    [dshow @ 00000000045c9360]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{BB8BE70B-4DDC-465F-9247-86E6EC98D627}"
    dummy: Immediate exit requested

    And this command :
    ffmpeg -list_options true -f dshow -i video="Logitech Webcam C930e"

    still gives this output :

    ffmpeg version N-69608-g9dc45d1 Copyright (c) 2000-2015 the FFmpeg developers
     built with gcc 4.9.2 (GCC)
     configuration: --enable-gpl --enable-version3 --disable-w32threads --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-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
     libavutil      54. 18.100 / 54. 18.100
     libavcodec     56. 21.102 / 56. 21.102
     libavformat    56. 19.100 / 56. 19.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5.  9.103 /  5.  9.103
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  1.100 /  1.  1.100
     libpostproc    53.  3.100 / 53.  3.100
    [dshow @ 0000000004469360] DirectShow video device options (from video devices)
    [dshow @ 0000000004469360]  Pin "Capture" (alternative pin name "0")
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=640x480 fps=5 max s=640x480 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=640x480 fps=5 max s=640x480 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=160x120 fps=5 max s=160x120 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=160x120 fps=5 max s=160x120 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=176x144 fps=5 max s=176x144 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=176x144 fps=5 max s=176x144 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=320x180 fps=5 max s=320x180 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=320x180 fps=5 max s=320x180 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=320x240 fps=5 max s=320x240 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=320x240 fps=5 max s=320x240 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=352x288 fps=5 max s=352x288 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=352x288 fps=5 max s=352x288 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=424x240 fps=5 max s=424x240 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=424x240 fps=5 max s=424x240 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=480x270 fps=5 max s=480x270 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=480x270 fps=5 max s=480x270 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=640x360 fps=5 max s=640x360 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=640x360 fps=5 max s=640x360 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=800x448 fps=5 max s=800x448 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=800x448 fps=5 max s=800x448 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=800x600 fps=5 max s=800x600 fps=24
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=800x600 fps=5 max s=800x600 fps=24
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=848x480 fps=5 max s=848x480 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=848x480 fps=5 max s=848x480 fps=30
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=960x540 fps=5 max s=960x540 fps=15
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=960x540 fps=5 max s=960x540 fps=15
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1024x576 fps=5 max s=1024x576 fps=15
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1024x576 fps=5 max s=1024x576 fps=15
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1280x720 fps=5 max s=1280x720 fps=10
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1280x720 fps=5 max s=1280x720 fps=10
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1600x896 fps=5 max s=1600x896 fps=7.5
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1600x896 fps=5 max s=1600x896 fps=7.5
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1920x1080 fps=5 max s=1920x1080 fps=5
    [dshow @ 0000000004469360]   pixel_format=yuyv422  min s=1920x1080 fps=5 max s=1920x1080 fps=5
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=640x480 fps=5 max s=640x480 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=640x480 fps=5 max s=640x480 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=160x120 fps=5 max s=160x120 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=160x120 fps=5 max s=160x120 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=176x144 fps=5 max s=176x144 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=176x144 fps=5 max s=176x144 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=320x180 fps=5 max s=320x180 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=320x180 fps=5 max s=320x180 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=320x240 fps=5 max s=320x240 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=320x240 fps=5 max s=320x240 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=352x288 fps=5 max s=352x288 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=352x288 fps=5 max s=352x288 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=424x240 fps=5 max s=424x240 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=424x240 fps=5 max s=424x240 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=480x270 fps=5 max s=480x270 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=480x270 fps=5 max s=480x270 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=640x360 fps=5 max s=640x360 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=640x360 fps=5 max s=640x360 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=800x448 fps=5 max s=800x448 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=800x448 fps=5 max s=800x448 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=800x600 fps=5 max s=800x600 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=800x600 fps=5 max s=800x600 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=848x480 fps=5 max s=848x480 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=848x480 fps=5 max s=848x480 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=960x540 fps=5 max s=960x540 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=960x540 fps=5 max s=960x540 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1024x576 fps=5 max s=1024x576 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1024x576 fps=5 max s=1024x576 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1280x720 fps=5 max s=1280x720 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1280x720 fps=5 max s=1280x720 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1600x896 fps=5 max s=1600x896 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1600x896 fps=5 max s=1600x896 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1920x1080 fps=5 max s=1920x1080 fps=30
    [dshow @ 0000000004469360]   vcodec=mjpeg  min s=1920x1080 fps=5 max s=1920x1080 fps=30
    [dshow @ 0000000004469360]  Pin "Capture" (alternative pin name "1")
    video=Logitech Webcam C930e: Immediate exit requested

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