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• ffmpeg cannot generate thumbnail [migrated]

  25 mars 2013, par Alex Flo

  I use ffmpeg to generate 10 .jpeg thumbs out of a video file. Most of the time it works fine but for some files (a 55seconds .mp4 for example) I get only the first 4 out of 10 captures, for the rest I get this error :
  Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  The command I use to convert is this one
  ffmpeg -ss 16 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb4.jpg
  where -ss value is a multiple of 4 and from 20 it stops working.

  Command line full output :

  `# ffmpeg -ss 77 -i /path/source.mp4 -y -f image2 -t 0.001 -s 320*240 /path/thumb7.jpg  
  
  ffmpeg version git-2013-02-25-b8f6912 Copyright (c) 2000-2013 the FFmpeg developers  
  
    built on Feb 25 2013 15:18:21 with gcc 4.4.5 (Debian 4.4.5-8)  
  
    configuration: --enable-shared --enable-libx264 --enable-gpl  
  
    libavutil      52. 17.103 / 52. 17.103  
  
    libavcodec     54. 92.100 / 54. 92.100  
  
    libavformat    54. 63.100 / 54. 63.100  
  
    libavdevice    54.  3.103 / 54.  3.103  
  
    libavfilter     3. 41.100 /  3. 41.100  
  
    libswscale      2.  2.100 /  2.  2.100  
  
    libswresample   0. 17.102 /  0. 17.102  
  
    libpostproc    52.  2.100 / 52.  2.100  
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/source.mp4':  
  
    Metadata:  
  
      major_brand     : mp42  
  
      minor_version   : 19529845  
  
      compatible_brands: mp42isom  
  
      creation_time   : 2013-03-20 21:45:43  
  
    Duration: 00:02:04.62, start: 0.000000, bitrate: 605 kb/s  
  
      Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s  
  
      Metadata:  
  
        creation_time   : 2013-03-20 21:45:43  
  
        handler_name    : Sound Media Handler  
  
      Stream #0:1(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 40:33 DAR 20:11], 983 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc  
  
      Metadata:  
  
        creation_time   : 2013-03-20 21:45:43  
  
        handler_name    : Video Media Handler  
  
  Output #0, image2, to '/path/thumb7.jpg':  
  
    Metadata:  
  
      major_brand     : mp42  
  
      minor_version   : 19529845  
  
      compatible_brands: mp42isom  
  
      encoder         : Lavf54.63.100  
  
      Stream #0:0(eng): Video: mjpeg, yuvj420p, 320x240 [SAR 15:11 DAR 20:11], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc  
  
      Metadata:
  
        creation_time   : 2013-03-20 21:45:43  
  
        handler_name    : Video Media Handler  
  
  Stream mapping:  
  
    Stream #0:1 -> #0:0 (h264 -> mjpeg)  
  
  Press [q] to stop, [?] for help  
  
  frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A      
  
  video:0kB audio:0kB subtitle:0 global headers:0kB muxing overhead -inf%  
  
  Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)`  

• Tutorial on Using FFmepg on Qt [on hold]

  10 décembre 2014, par user3790147

  is there any proper tutorial on how to setup FFmpeg on Qt ?

  So far I followed this guide :
  http://ramu492.blogspot.sg/2013/06/porting-ffmpeg-on-to-winodws7-and.html

  but have run into unresolved external symbol errors.

• How to make that video module can generate readable files for the module JW Player ?

  4 janvier 2015, par Dvex

  I use Drupal 7.x with Video Module, Video Pressets for FFMPEG and JW Player.
  I install FFMPEG with this Guide : https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu in Ubuntu 14.04

  I’m using jQuery 1.8

  I downloaded the files that the JW Player module requires and renamed some files, as the guide tells me.

  I set the video module so you can use FFMPEG and established the necessary pressets (FLV, MP4 and WebM) for any browser (web and mobile).

  I changed the default settings of these pressets. I put check the option : Force one-pass Encoding. Because if not me error message :

  PHPVideoToolkit error: Execute error. It was not possible to encode "/var/www/html/sites/default/files/private/videos/original/reel para web en loop_2.mp4" as FFmpeg returned an error. Note, however the error was encountered on the second pass of the encoding process and the first pass appear to go fine. The error is with the video codec of the input file. FFmpeg reports the error to be "Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height".
  
  
  
  /usr/bin/ffmpeg -i '/var/www/html/sites/default/files/private/videos/original/reel para web en loop_2.mp4' -strict experimental -vcodec 'h264' -acodec 'aac' -vprofile 'baseline' -ac '2' -pass '1' -passlogfile '/tmp/1420389438-54a96c3eda9fc-multipass'  -y /tmp/1420389438-54a96c3eda8c1.mp4
  
  ffmpeg version 1.2.6-7:1.2.6-1~trusty1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 26 2014 18:52:58 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --arch=amd64 --disable-stripping --enable-avresample --enable-pthreads --enable-runtime-cpudetect --extra-version='7:1.2.6-1~trusty1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    53.  5.103 / 53.  5.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/html/sites/default/files/private/videos/original/reel para web en loop_2.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2013-09-12 17:30:22
  
    Duration: 00:00:39.32, start: 0.000000, bitrate: 3190 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 40:33 DAR 20:11], 2991 kb/s, 29.97 fps, 29.97 tbr, 29970 tbn, 59.94 tbc
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Video Media Handler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Sound Media Handler
  
  [libx264 @ 0x164dec0] using SAR=40/33
  
  [libx264 @ 0x164dec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x164dec0] profile Constrained Baseline, level 3.0
  
  [libx264 @ 0x164dec0] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/tmp/1420389438-54a96c3eda8c1.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      encoder         : Lavf54.63.104
  
      Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 720x480 [SAR 40:33 DAR 20:11], q=-1--1, pass 1, 11988 tbn, 29.97 tbc
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Video Media Handler
  
      Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Sound Media Handler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> aac)
  
  Press [q] to stop, [?] for help
  
  frame=   88 fps=0.0 q=29.0 size=     483kB time=00:00:02.96 bitrate=1335.6kbits/s dup=1 drop=0    
  
  frame=  190 fps=189 q=29.0 size=    1916kB time=00:00:06.33 bitrate=2477.6kbits/s dup=1 drop=0    
  
  frame=  289 fps=192 q=29.0 size=    3001kB time=00:00:09.64 bitrate=2549.5kbits/s dup=1 drop=0    
  
  frame=  395 fps=196 q=29.0 size=    3732kB time=00:00:13.31 bitrate=2296.7kbits/s dup=1 drop=0    
  
  frame=  495 fps=197 q=29.0 size=    4481kB time=00:00:16.66 bitrate=2203.1kbits/s dup=1 drop=0    
  
  frame=  591 fps=196 q=29.0 size=    5152kB time=00:00:19.98 bitrate=2111.4kbits/s dup=1 drop=0    
  
  frame=  690 fps=196 q=29.0 size=    6329kB time=00:00:23.01 bitrate=2252.4kbits/s dup=1 drop=0    
  
  frame=  790 fps=197 q=29.0 size=    7184kB time=00:00:26.32 bitrate=2235.6kbits/s dup=1 drop=0    
  
  frame=  890 fps=197 q=29.0 size=    8532kB time=00:00:29.73 bitrate=2350.3kbits/s dup=1 drop=0    
  
  frame= 1000 fps=199 q=29.0 size=    9398kB time=00:00:33.42 bitrate=2303.0kbits/s dup=1 drop=0    
  
  frame= 1106 fps=200 q=29.0 size=   10423kB time=00:00:37.01 bitrate=2306.8kbits/s dup=1 drop=0    
  
  frame= 1178 fps=199 q=-1.0 Lsize=   11404kB time=00:00:39.31 bitrate=2376.1kbits/s dup=1 drop=0
  
  video:10752kB audio:618kB subtitle:0 global headers:0kB muxing overhead 0.302603%
  
  [libx264 @ 0x164dec0] frame I:87    Avg QP:24.23  size: 21823
  
  [libx264 @ 0x164dec0] frame P:1091  Avg QP:25.90  size:  8351
  
  [libx264 @ 0x164dec0] mb I  I16..4: 50.9%  0.0% 49.1%
  
  [libx264 @ 0x164dec0] mb P  I16..4: 14.8%  0.0%  0.0%  P16..4: 51.3%  0.0%  0.0%  0.0%  0.0%    skip:33.9%
  
  [libx264 @ 0x164dec0] coded y,uvDC,uvAC intra: 43.9% 38.7% 10.2% inter: 23.0% 14.4% 0.8%
  
  [libx264 @ 0x164dec0] i16 v,h,dc,p: 31% 39% 19% 11%
  
  [libx264 @ 0x164dec0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 44% 14%  5%  4%  4%  4%  4%  4%
  
  [libx264 @ 0x164dec0] i8c dc,h,v,p: 57% 22% 17%  4%
  
  [libx264 @ 0x164dec0] kb/s:2240.77
  
  /usr/bin/ffmpeg -i '/var/www/html/sites/default/files/private/videos/original/reel para web en loop_2.mp4' -strict experimental -vcodec 'h264' -acodec 'aac' -vprofile 'baseline' -ac '2' -pass '2' -passlogfile '/tmp/1420389438-54a96c3eda9fc-multipass'  -y /tmp/1420389438-54a96c3eda8c1.mp4
  
  ffmpeg version 1.2.6-7:1.2.6-1~trusty1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 26 2014 18:52:58 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --arch=amd64 --disable-stripping --enable-avresample --enable-pthreads --enable-runtime-cpudetect --extra-version='7:1.2.6-1~trusty1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    53.  5.103 / 53.  5.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/html/sites/default/files/private/videos/original/reel para web en loop_2.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2013-09-12 17:30:22
  
    Duration: 00:00:39.32, start: 0.000000, bitrate: 3190 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 40:33 DAR 20:11], 2991 kb/s, 29.97 fps, 29.97 tbr, 29970 tbn, 59.94 tbc
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Video Media Handler
  
      Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Sound Media Handler
  
  [libx264 @ 0x161eec0] using SAR=40/33
  
  [libx264 @ 0x161eec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x161eec0] constant rate-factor is incompatible with 2pass.
  
  Output #0, mp4, to '/tmp/1420389438-54a96c3eda8c1.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      Stream #0:0(eng): Video: h264, yuv420p, 720x480 [SAR 40:33 DAR 20:11], q=-1--1, pass 2, 90k tbn, 29.97 tbc
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Video Media Handler
  
      Stream #0:1(eng): Audio: none, 48000 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        creation_time   : 2013-09-12 17:30:22
  
        handler_name    : Mainconcept MP4 Sound Media Handler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> aac)
  
  Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

  When I save a node and add its corresponding video, the module generates the 3 files with their respective formats. But when thrown at the JW Player module, only plays FLV in every browser.
  But not the MP4 or WebM.

  I checked the log and status report and all I get in order.

  So I assume that the MP4 and WebM formats generated are not what the JW Player waiting.

  Does anyone have the solution to this problem ? I tried to recompile FFMPEG with more codecs but it does not solve the problem.

  This is my FFMPEG Configuration :

  ffmpeg version 1.2.6-1~trusty1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 26 2014 18:52:58 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --arch=amd64 --disable-stripping --enable-avresample --enable-pthreads --enable-runtime-cpudetect --extra-version='7:1.2.6-1~trusty1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static