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• Why ffmpeg convert only the first frame of my animated gif ? [duplicate]

  23 novembre 2016, par Cyriltra

  This question already has an answer here :

  • convert animated gif to video on linux server while preserving frame rate
    
    2 answers
    

  My animated gif is around 37mo and last for around 10sec. I use the following command on debian to convert it to .mp4 :

  avconv -i test2_37m2.gif -pix_fmt yuv420p -vf \"scale=trunc(iw/2)*2:trunc(ih/2)*2\" test2_37m2_mp4.mp4 2>&1

  The result is a 14kb .mp4 which is just a static frame (the first one) of the gif. Why ?

  here is the output log of ffmpeg / avconv

  avconv version 0.8.18-6:0.8.18-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
  built on Oct 4 2016 17:59:06 with gcc 4.7.2
  
  Input #0, image2, from '/var/www/clients/client1/web1/web/test/gif/test2_37m2.gif':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
  Stream #0.0: Video: gif, pal8, 640x360, 25 tbr, 25 tbn, 25 tbc
  
  Incompatible pixel format 'pal8' for codec 'libx264', auto-selecting format 'yuv420p'
  
  [buffer @ 0x1a4a820] w:640 h:360 pixfmt:pal8
  
  [avsink @ 0x1a4aac0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
  
  [scale @ 0x1a4ae20] w:640 h:360 fmt:pal8 -> w:640 h:360 fmt:yuv420p flags:0x4
  
  [libx264 @ 0x1a4a060] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x1a4a060] profile Main, level 3.0
  
  [libx264 @ 0x1a4a060] 264 - core 123 r2189 35cf912 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 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=1.25 aq=1:1.00
  
  Output #0, mp4, to '/var/www/clients/client1/web1/web/test/gif/test2_37m2_mp4.mp4':
  
  Metadata:
  
  encoder : Lavf53.21.1
  
  Stream #0.0: Video: libx264, yuv420p, 640x360, q=-1--1, 25 tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (gif -> libx264)
  
  Press ctrl-c to stop encoding
  
  frame= 1 fps= 0 q=28.0 Lsize= 13kB time=10000000000.00 bitrate= 0.0kbits/s
  
  video:12kB audio:0kB global headers:0kB muxing overhead 6.292888%
  
  [libx264 @ 0x1a4a060] frame I:1 Avg QP:27.23 size: 12119
  
  [libx264 @ 0x1a4a060] mb I I16..4: 49.2% 0.0% 50.8%
  
  [libx264 @ 0x1a4a060] coded y,uvDC,uvAC intra: 68.7% 45.8% 3.4%
  
  [libx264 @ 0x1a4a060] i16 v,h,dc,p: 22% 25% 22% 31%
  
  [libx264 @ 0x1a4a060] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 28% 21% 4% 5% 4% 9% 3% 7%
  
  [libx264 @ 0x1a4a060] i8c dc,h,v,p: 57% 29% 13% 1%
  
  [libx264 @ 0x1a4a060] kb/s:2423.80

  Thank you

• Can't play rtp stream from ffmpeg/avconv, no data received

  6 mars 2014, par Foo Barazz

  I started avserver on my Raspberry Pi, webcam attached I read from /dev/video0 with

  pi@raspberrypi $ avconv -f video4linux2 -i /dev/video0 -vcodec mpeg2video -r 25 - pix_fmt yuv420p -me_method epzs -b 2600k -bt 256k -f rtp rtp://192.168.0.124:8090
  
  
  
  avconv version 0.8.6-6:0.8.6-1+rpi1, Copyright (c) 2000-2013 the Libav developers
  
    built on Mar 31 2013 13:58:10 with gcc 4.6.3
  
  [video4linux2 @ 0x17c1720] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, video4linux2, from '/dev/video0':
  
    Duration: N/A, start: 615.594215, bitrate: 36864 kb/s
  
      Stream #0.0: Video: rawvideo, yuyv422, 320x240, 36864 kb/s, 30 tbr, 1000k tbn, 30 tbc
  
  [buffer @ 0x17c16e0] w:320 h:240 pixfmt:yuyv422
  
  [avsink @ 0x17c2f00] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
  
  [scale @ 0x17c34c0] w:320 h:240 fmt:yuyv422 -> w:320 h:240 fmt:yuv420p flags:0x4
  
  Output #0, rtp, to 'rtp://192.168.0.124:8090':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
      Stream #0.0: Video: mpeg2video, yuv420p, 320x240, q=2-31, 2600 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo -> mpeg2video)
  
  SDP:
  
  v=0
  
  o=- 0 0 IN IP4 127.0.0.1
  
  s=No Name
  
  c=IN IP4 192.168.0.124
  
  t=0 0
  
  a=tool:libavformat 53.21.1
  
  m=video 8090 RTP/AVP 32
  
  b=AS:2600
  
  
  
  Press ctrl-c to stop encoding
  
  frame=  576 fps= 25 q=2.0 size=    2133kB time=23.00 bitrate= 759.8kbits/s dup=390 drop=0    
  
  frame=  590 fps= 25 q=2.0 size=    2191kB time=23.56 bitrate= 762.0kbits/s dup=400 drop=0    
  
  frame= 1320 fps= 25 q=2.0 size=    4932kB time=52.76 bitrate= 765.8kbits/s dup=908 drop=0
  
  ...

  Seems to work fine, it reads data from the webcam.

  Now I'm trying to simply play with ffplay from my Mac with

  $ ffplay rtp://192.168.0.124:8090
  
  ffplay version 1.2.4 Copyright (c) 2003-2013 the FFmpeg developers
  
    built on Mar  1 2014 15:18:21 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-aacenc --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1/include/openjpeg-1.5 '
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    54.  3.103 / 54.  3.103
  
    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
  
      nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
      nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0   
  
      nan A-V:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0 
  
      ...

  The video doesn't open and it seems to not reading any data from the Raspberry Pi.

  I use the default configuration for avserver.
  The webcam is definitely working as I managed to just write out images with avconv from it.

  What did I miss ?

• ffmpeg covert video in different format and also a cut same time

  17 juillet 2017, par Mahesh Prajapati

  i am converting video one format to another format but i want to also a cut it from some of the time duration so please help me to resolve that problem.
  hear some of the sample code. in blow command height and width is given dynamically.

  $conv_cmd="$ffmpeg -y -i ".$source_video_path.$newfilename."  -c:v libx264 -preset veryfast -s ".$width[1]."x".$height[1]."  -b:a 196k -b:v 1000K  uploads/all_tags_videos/".$con_file_name.".mp4 2>&1";

  that is convert code it’s give me error

  [0] => ffmpeg version git-2017-04-04-1229007 Copyright (c) 2000-2017 the FFmpeg developers
  
  [1] =>   built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-17)
  
  [2] =>   configuration: --prefix=/usr/local/ffmpeg --extra-cflags='-I$/usr/local/ffmpeg/include -fPIC' --extra-ldflags=-L/usr/local/ffmpeg/lib/ --bindir=/usr/sbin --extra-libs=-ldl --enable-gpl --enable-nonfree --enable-libspeex --enable-shared --enable-libfdk_aac --enable-libopus --enable-libfreetype --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
  
  [3] =>   libavutil      55. 59.100 / 55. 59.100
  
  [4] =>   libavcodec     57. 90.100 / 57. 90.100
  
  [5] =>   libavformat    57. 72.100 / 57. 72.100
  
  [6] =>   libavdevice    57.  7.100 / 57.  7.100
  
  [7] =>   libavfilter     6. 83.100 /  6. 83.100
  
  [8] =>   libswscale      4.  7.100 /  4.  7.100
  
  [9] =>   libswresample   2.  8.100 /  2.  8.100
  
  [10] =>   libpostproc    54.  6.100 / 54.  6.100
  
  [11] => Input #0, flv, from '/home/cigarsnearme/public_html/wp-content/themes/Newspaper_child/cigar_template/pageshortcode/status_tag_photos_upload_plugin/uploads/all_tags_videos/33-cc49pFlruuscbPhtmIaPFxjINpdGUx-1500249600.flv':
  
  [12] =>   Metadata:
  
  [13] =>     encoder         : Lavf53.24.2
  
  [14] =>   Duration: 00:00:11.00, start: 0.000000, bitrate: 1525 kb/s
  
  [15] =>     Stream #0:0: Audio: aac (LC), 48000 Hz, 5.1, fltp, 384 kb/s
  
  [16] =>     Stream #0:1: Video: flv1, yuv420p, 1280x720, 1200 kb/s, 1k fps, 25 tbr, 1k tbn
  
  [17] => Stream mapping:
  
  [18] =>   Stream #0:1 -> #0:0 (flv1 (flv) -> h264 (libx264))
  
  [19] =>   Stream #0:0 -> #0:1 (aac (native) -> aac (native))
  
  [20] => Press [q] to stop, [?] for help
  
  [21] => [libx264 @ 0x10fe7a0] using cpu capabilities: none!
  
  [22] => [libx264 @ 0x10fe7a0] profile High, level 3.1
  
  [23] => [libx264 @ 0x10fe7a0] 264 - core 148 r2762 90a61ec - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=22 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=abr mbtree=1 bitrate=1000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [24] => [AVFilterGraph @ 0x1d73e60] Error initializing threading.
  
  [25] => [AVFilterGraph @ 0x1d73e60] Error creating filter 'anull'
  
  [26] => Error reinitializing filters!
  
  [27] => Failed to inject frame into filter network: Cannot allocate memory
  
  [28] => Error while processing the decoded data for stream #0:0
  
  [29] => [libx264 @ 0x10fe7a0] final ratefactor: 28.36
  
  [30] => Conversion failed!