Newest 'ffmpeg' Questions - Stack Overflow

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• Batch script to convert all avi to mp4 and delete after conversion using HandBrake command line

  26 février 2014, par RarLines

  So easy and cool batch question. Sorry for this ultimate newbie question !

  I've a folder which contains hundreds of videos like that:

  Video001 - Introduction.avi
  Video002 - History of Stack Overflow.avi
  Video003 - Before Asking.avi
  ...
  Video999 - Conclusion.avi
  

  I need re-encode all of them with x264 codec. Ffmpeg is very slow so I tried to use HandBrake. There is a command line edition of HB and great default presents. I could write this command for converting only one file with "Normal" present:

  HandBrakeCLI.exe -i "Video001 - Introduction.avi" -o "Video001 - Introduction.mp4" -Z Normal

  My question: How can I convert all of them in folder and delete after conversion process? Thank you!

  Note: If you think ffmpeg is better solution I can give my fav present. Handbrake says about Normal present:

  Normal: -e x264 -q 20.0 -a 1 -E faac -B 160 -6 dpl2 -R Auto -D 0.0 --audio-copy-mask aac,ac3,dtshd,dts,mp3 --audio-fallback ffac3 -f mp4 --loose-anamorphic --modulus 2 -m --x264-preset veryfast --h264-profile main --h264-level 4.0

• Stream H264 video with packetization mode 0

  26 février 2014, par Alan

  I have a video that is originally not in packetization mode 0 (http://www.bigbuckbunny.org/index.php/download/).

  I would like to stream that video but have the h264 data packed in the RTP payload as packetization mode 0.

  Please suggest a gstreamer or a ffmpeg pipeline to achieve this. I've tried doing it with VLC but failed to specify the encoding to such detail.

• JavaCV on Android with ARMv6

  26 février 2014, par xoidberg

  I got problems getting JavaCV (http://code.google.com/p/javacv/) to run on my Samsung Galaxy S5570i device. According to this site http://www.gsmarena.com/samsung_galaxy_pop_plus_s5570i-4544.php this device has an ARMv6 CPU. I tried several deprecated versions of JavaCV that still include builds for ARMv5, because I had problems building it on my own. None of this versions worked on my device. I also tried running this on a virtual device which should simulate ARMv5 as long as I know. I always get exceptions that libraries couldn't be found, e.g.: "Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1312]: 1306 cannot locate '_ZNK2cv6KDTree14findOrthoRangeERKNS_11_InputArrayES3_RKNS_12_OutputArrayES6_S6_'. I know that it is not recommended to use JavaCV on ARMv5 or ARMv6 CPUs, but I want to implement a feature in my app and provide it also for older CPUs, even if it's slower than on newer ones. So what could be the problem? Did I use wrong versions or what versions should I use? Hope to get an answer here.

  Thanks in advance!

  xoidberg

• ffmpeg libz.so dependency

  26 février 2014, par malaprop malaprop

  we are trying to install ffmpeg on our RH linux servers.

  Trouble is that it works on one not on the other and we have no idea why. The working and the non working server have the same config information:

  
      ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
      built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
      configuration: --enable-gpl --enable-version3 --enable-shared --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib
      libavutil      51. 35.100 / 51. 35.100
      libavcodec     53. 61.100 / 53. 61.100
      libavformat    53. 32.100 / 53. 32.100
      libavdevice    53.  4.100 / 53.  4.100
      libavfilter     2. 61.100 /  2. 61.100
      libswscale      2.  1.100 /  2.  1.100
      libswresample   0.  6.100 /  0.  6.100
      libpostproc    52.  0.100 / 52.  0.100
      Hyper fast Audio and Video encoder
  
  

  The error we are getting is:

  
      ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
        built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
        configuration: --enable-gpl --enable-version3 --enable-shared --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib
      libavutil      51. 35.100 / 51. 35.100
      libavcodec     53. 61.100 / 53. 61.100
      libavformat    53. 32.100 / 53. 32.100
      libavdevice    53.  4.100 / 53.  4.100
      libavfilter     2. 61.100 /  2. 61.100
      libswscale      2.  1.100 /  2.  1.100
      libswresample   0.  6.100 /  0.  6.100
      libpostproc    52.  0.100 / 52.  0.100
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '4598_Testvideo_MP4-H264-6MBit_AAC-44KHz-192KBit_720p.mp4':
        Metadata:
          major_brand     : mp42
          minor_version   : 0
          compatible_brands: mp42mp41
          creation_time   : 2012-01-25 10:58:21
        Duration: 00:02:13.56, start: 0.000000, bitrate: 5472 kb/s
          Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 5280 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
          Metadata:
            creation_time   : 2012-01-25 10:58:21
            handler_name    : Mainconcept MP4 Video Media Handler
          Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 189 kb/s
          Metadata:
            creation_time   : 2012-01-25 10:58:21
            handler_name    : Mainconcept MP4 Sound Media Handler
      [buffer @ 0x3160ea0] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
      [scale @ 0x31629a0] w:1280 h:720 fmt:yuv420p -> w:480 h:270 fmt:yuv420p flags:0x4
      [libvpx @ 0x314ab40] v0.9.6
      [libvpx @ 0x314ab40] Failed to initialize encoder: ABI version mismatch
      Output #0, webm, to 'outputvideo.webm':
        Metadata:
          major_brand     : mp42
          minor_version   : 0
          compatible_brands: mp42mp41
          creation_time   : 2012-01-25 10:58:21
          Stream #0:0(eng): Video: vp8, yuv420p, 480x270 [SAR 1:1 DAR 16:9], q=-1--1, 2500 kb/s, 90k tbn, 25 tbc
          Metadata:
            creation_time   : 2012-01-25 10:58:21
            handler_name    : Mainconcept MP4 Video Media Handler
          Stream #0:1(eng): Audio: none, 44100 Hz, stereo, s16, 128 kb/s
          Metadata:
            creation_time   : 2012-01-25 10:58:21
            handler_name    : Mainconcept MP4 Sound Media Handler
      Stream mapping:
        Stream #0:0 -> #0:0 (h264 -> libvpx)
        Stream #0:1 -> #0:1 (aac -> libvorbis)
      Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  

  I've looked at the dependent libraries using ldd and did find one differenct. the library libz.so was not listet in the system that doesn't work. ie

  
      /lib64/ld-linux-x86-64.so.2 (0x00000035a9000000)
      libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002ae5189a8000)
      libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002ae518204000)
      libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002ae51840e000)
      libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002ae51869c000)
      libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002ae519e17000)
      libc.so.6 => /lib64/libc.so.6 (0x00000035a9400000)
      libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x0000003407800000)
      libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000035ac000000)
      libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x0000003407000000)
      libm.so.6 => /lib64/libm.so.6 (0x00000035aa000000)
      libogg.so.0 => /usr/local/lib/libogg.so.0 (0x00002ae51b35b000)
      libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x0000003409800000)
      libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x0000003407c00000)
      libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002ae5197ba000)
      libpthread.so.0 => /lib64/libpthread.so.0 (0x00000035a9c00000)
      libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000035aa400000)
      libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002ae5199c6000)
      libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002ae519bce000)
      libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002ae51b141000)
      libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002ae51af05000)
      libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002ae51a8fe000)
      libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002ae51acd9000)
      libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002ae51a687000)
      libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002ae51a320000)
      libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002ae51a03a000)
      linux-vdso.so.1 =>  (0x00007ffff63f6000)
  
  

  as opposed to

  
      /lib64/ld-linux-x86-64.so.2 (0x0000003074c00000)
      libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002b2038eeb000)
      libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002b2038746000)
      libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002b2038950000)
      libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002b2038bdf000)
      libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002b203a368000)
      libc.so.6 => /lib64/libc.so.6 (0x0000003075000000)
      libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x00002b203bcef000)
      libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003003400000)
      libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x000000310ae00000)
      libm.so.6 => /lib64/libm.so.6 (0x0000003075c00000)
      libogg.so.0 => /usr/lib64/libogg.so.0 (0x00002b203bf01000)
      libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x00002b203bac1000)
      libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x00002b203b8ab000)
      libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002b2039d0b000)
      libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003075800000)
      libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x000000360ea00000)
      libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002b2039f18000)
      libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002b203a11f000)
      libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002b203b693000)
      libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002b203b457000)
      libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002b203ae50000)
      libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002b203b22a000)
      libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002b203abd9000)
      libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002b203a871000)`enter code here`
      libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002b203a58c000)
      libz.so.1 => /lib64/libz.so.1 (0x0000003076000000)
      linux-vdso.so.1 =>  (0x00007fff6adfd000)
  
  

  I wanted to ask whether this has something to do with the problem. before i try to figure out how come the libz.so appears i nthe one list and not the other.

  btw the ld.so.conf files are identical.

• How to use avconv filters after encoding ?

  26 février 2014, par Bill Humpton

  I have avconv command

  avconv  -i file -s [new size options] -vf "[filters]" /root/converted/1.mp4
  

  Avconv use filters before encoding, but I need after. I need one avconv command:

  Resize video first
  Use filters second
  

  How can I do it?