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• Error while trying to create dashcast stream using libx265

  16 décembre 2015, par Rahul

  I’m trying to create a h265 encoded stream from webcam using the follwoing command.

  DashCast -vf video4linux2  -v4l2f mjpeg -v /dev/video0 -conf dashcast.conf -live-media

  The content if dashcast.conf is

  [v1]
  
  type=video
  
  codec=libx265
  
  bitrate=1000000
  
  framerate=25
  
  width=640
  
  height=480

  But I’m getting this error.

  Options:
  
      video source: /dev/video0
  
      video format: video4linux2
  
      v4l2 format: mjpeg
  
      video crop: 0x0
  
      audio source: 
  
  Configurations:
  
      id:v1   res:640x480 vbr:1000000
  
  [mjpeg @ 0xb194e0] Changeing bps to 8
  
  Input #0, video4linux2,v4l2, from '/dev/video0':
  
    Duration: N/A, start: 50349.327770, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg/unknown/unknown), 1280x720, -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  AVCTX give frame duration of 1/1000000 - keeping requested rate -1, but this may result in unexpected behaviour.
  
  [swscaler @ 0xb91ea0] deprecated pixel format used, make sure you did set range correctly
  
  Press q or Q to exit...
  
  [dashcast] Live system dropped a video frame
  
  [dashcast] Live system dropped a video frame
  
  x265 [info]: HEVC encoder version 1.85dcc9d3a928c400b
  
  x265 [info]: build info [Linux][GCC 4.8.4][64 bit] 8bit
  
  x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  x265 [info]: Main profile, Level-3 (Main tier)
  
  x265 [info]: Thread pool created using 4 threads
  
  x265 [info]: frame threads / pool features       : 1 / wpp(8 rows)
  
  [dashcast] Live system dropped a video frame
  
  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         : hex / 57 / 2 / 2
  
  x265 [info]: Keyframe min / max / scenecut       : 25 / 250 / 40
  
  x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
  
  x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
  
  x265 [info]: References / ref-limit  cu / depth  : 3 / 0 / 0
  
  x265 [info]: AQ: mode / str / qg-size / cu-tree  : 1 / 1.0 / 32 / 1
  
  x265 [info]: Rate Control / qCompress            : ABR-1000 kbps / 0.60
  
  x265 [info]: tools: rd=3 psy-rd=0.30 signhide tmvp strong-intra-smoothing
  
  x265 [info]: tools: deblock sao
  
  Cannot parse HEVC/H265 SPS/PPS
  
  Bad Parameter: dc_gpac_video_write_config
  
  Bad Parameter: gf_isom_start_segment
  
  Cannot open output video file.
  
  Generating MPD at 2015-11-24T19:17:46.040Z
  
  StartTime: 2015-11-24T19:17:46.040Z - startNumber 1 - last number 1
  
  Keyboard thread exit
  
  [dashcast] Live system dropped a video frame
  
  [dashcast] Live system dropped a video frame

  What could be the problem ? Changing codec to libx264 in the conf file works fine.

• ffmpeg conversion fails for 640x360 video size

  12 novembre 2015, par user3132858

  Can somebody advice how I can fix the ffmpeg error below :

  Array ( [0] => ffmpeg version 2.0.1 Copyright (c) 2000-2013 the FFmpeg developers 
  
  [1] => built on Nov 11 2015 12:17:12 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16) [2] 
  
  => 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 [3] => libavutil 52. 38.100 / 52. 38.100 [4]
  
  => libavcodec 55. 18.102 / 55. 18.102 [5] => libavformat 55. 12.100 / 55. 12.100 [6] 
  
  => libavdevice 55. 3.100 / 55. 3.100 [7] => libavfilter 3. 79.101 / 3. 79.101 [8] 
  
  => libswscale 2. 3.100 / 2. 3.100 [9] => libswresample 0. 17.102 / 0. 17.102 [10] 
  
  => libpostproc 52. 3.100 / 52. 3.100 [11] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3.mov': [12] 
  
  => Metadata: [13] => major_brand : qt [14] => minor_version : 537199360 [15] => compatible_brands: qt [16] 
  
  => creation_time : 2005-10-17 22:54:32 [17] => Duration: 00:01:25.50, start: 0.000000, 
  
  bitrate: 307 kb/s [18] => Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), 
  
  yuv420p, 640x480 [SAR 1:1 DAR 4:3], 261 kb/s, 10 fps, 10 tbr, 3k tbn, 25 tbc [19] 
  
  => Metadata: [20] => creation_time : 2005-10-17 22:54:33 [21] => handler_name : 
  
  Apple Video Media Handler [22] => Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 
  
  32000 Hz, mono, fltp, 43 kb/s [23] => Metadata: [24] => creation_time : 2005-10-17 22:54:34 [25] 
  
  => handler_name : Apple Sound Media Handler [26] => [libx264 @ 0x19fbb00] using SAR=944/945 [27] 
  
  => [libx264 @ 0x19fbb00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [28] 
  
  => Output #0, mp4, to '4.mp4': [29] => Metadata: [30] => major_brand : qt [31] 
  
  => minor_version : 537199360 [32] => compatible_brands: qt [33] => Stream #0:0
  
  (eng): Video: h264, yuv420p, 630x472 [SAR 944:945 DAR 4:3], q=-1--1, 900 kb/s, 90k tbn, 
  
  10 tbc [34] => Metadata: [35] => creation_time : 2005-10-17 22:54:33 [36] 
  
  => handler_name : Apple Video Media Handler [37] => Stream #0:1(eng): Audio: aac, 32000 Hz, 
  
  mono, fltp, 128 kb/s [38] => Metadata: [39] => creation_time : 2005-10-17 22:54:34 [40] 
  
  => handler_name : Apple Sound Media Handler [41] => Stream mapping: [42] 
  
  => Stream #0:0 -> #0:0 (mpeg4 -> libx264) [43] => Stream #0:1 -> #0:1 (aac -> aac) [44] 
  
  => Error while opening encoder for output stream #0:0 - maybe incorrect parameters 
  
  such as bit_rate, rate, width or height )

  This is my code :

  $width=640;
  
  $height=360;
  
  $aspect=round($width/$height, 1);
  
  
  
  $command = "/usr/bin/ffmpeg -threads 1 -y -i 3.mov -vf \"scale=min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (gte(a\,".$aspect.")*".$width." + \
  
  lt(a\,".$aspect.")*((".$height."*iw)/ih)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*iw : \
  
  min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (lte(a\,".$aspect.")*".$height." + \
  
  gt(a\,".$aspect.")*((".$width."*ih)/iw)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*ih\"  -b:v 900k -acodec aac -strict -2 -ab 96k 4.mp4 ";

  It is rather strange but when I change the width and height parameters to 300 and 200 respectively, the command executes, the error appears when the width x height is 640x360.

  Any ideas of what might be wrong ?

  UPDATE : I am pretty sure the error has got something to do with the audio encoding. If I change the -ab 96k part to -c:a copy, command executes.
  I cannot however use -c:a copy because for some audio formats the video does not play on mobile devices. Therefore i need the audio settings to be fixed and the same for all videos.

• FFMPEG convert .mpg video to .mp4 without lose quality

  12 novembre 2015, par reterius

  How can i convert video .mpg to .mp4 wihtout love quality. My codes below :

   $INCPATH       = dirname(__FILE__).'/';
  
  
  
   $id = 99999;
  
   $ext = "MPG" ;
  
  
  
    $input_dir = $INCPATH."../img/videos/".$id.".".$ext ;   
  
    $output_dir2 = $INCPATH."../img/videos/".$id.".mp4" ;
  
  
  
      $q = '/usr/bin/ffmpeg -i '.$input_dir.' -c:v libx264 -c:a libfaac -r     30 '.$output_dir2." 2>&1" ;
  
  
  
      $out = shell_exec($q) ;
  
      $input_dir  = $output_dir2 ;
  
  
  
       echo var_dump($out);

  Response that :

              string(5735) "ffmpeg version N-76539-g480bad7-syslint Copyright (c) 2000-2015 the FFmpeg developers
  
                built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
  
                configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
  
                libavutil      55.  5.100 / 55.  5.100
  
                libavcodec     57. 15.100 / 57. 15.100
  
                libavformat    57. 14.100 / 57. 14.100
  
                libavdevice    57.  0.100 / 57.  0.100
  
                libavfilter     6. 15.100 /  6. 15.100
  
                libswscale      4.  0.100 /  4.  0.100
  
                libswresample   2.  0.101 /  2.  0.101
  
                libpostproc    54.  0.100 / 54.  0.100
  
              Input #0, mpeg, from '/home/imcajans/public_html/kzmk/../img/videos/99999.MPG':
  
                Duration: 00:00:08.16, start: 0.116600, bitrate: 2955 kb/s
  
                  Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
  
                  Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
  
              [libx264 @ 0x161e820] using SAR=64/45
  
              [libx264 @ 0x161e820] using cpu capabilities: none!
  
              [libx264 @ 0x161e820] profile High, level 3.1
  
              [libx264 @ 0x161e820] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=18 lookahead_threads=3 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=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=1.40 aq=1:1.00
  
              Output #0, mp4, to '/home/imcajans/public_html/kzmk/../img/videos/99999.mp4':
  
                Metadata:
  
                  encoder         : Lavf57.14.100
  
                  Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc
  
                  Metadata:
  
                    encoder         : Lavc57.15.100 libx264
  
                  Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
  
                  Metadata:
  
                    encoder         : Lavc57.15.100 libfaac
  
              Stream mapping:
  
                Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
  
                Stream #0:1 -> #0:1 (ac3 (native) -> aac (libfaac))
  
              Press [q] to stop, [?] for help
  
              frame=   48 fps=0.0 q=0.0 size=       0kB time=00:00:01.19 bitrate=   0.3kbits/s dup=8 drop=0    
  
              frame=   66 fps= 58 q=29.0 size=      20kB time=00:00:01.83 bitrate=  87.2kbits/s dup=11 drop=0    
  
              frame=   77 fps= 43 q=29.0 size=      51kB time=00:00:02.17 bitrate= 190.3kbits/s dup=13 drop=0    
  
              frame=   89 fps= 38 q=29.0 size=      86kB time=00:00:02.60 bitrate= 272.2kbits/s dup=15 drop=0    
  
              frame=  101 fps= 34 q=29.0 size=     124kB time=00:00:02.98 bitrate= 340.6kbits/s dup=17 drop=0    
  
              frame=  114 fps= 32 q=29.0 size=     166kB time=00:00:03.39 bitrate= 400.3kbits/s dup=19 drop=0    
  
              frame=  126 fps= 31 q=29.0 size=     201kB time=00:00:03.84 bitrate= 428.3kbits/s dup=21 drop=0    
  
              frame=  137 fps= 30 q=29.0 size=     236kB time=00:00:04.20 bitrate= 459.6kbits/s dup=23 drop=0    
  
              frame=  151 fps= 29 q=29.0 size=     275kB time=00:00:04.65 bitrate= 484.2kbits/s dup=25 drop=0    
  
              frame=  165 fps= 29 q=29.0 size=     316kB time=00:00:05.12 bitrate= 505.4kbits/s dup=27 drop=0    
  
              frame=  177 fps= 28 q=29.0 size=     350kB time=00:00:05.50 bitrate= 521.3kbits/s dup=29 drop=0    
  
              frame=  188 fps= 27 q=29.0 size=     387kB time=00:00:05.93 bitrate= 534.6kbits/s dup=31 drop=0    
  
              frame=  198 fps= 27 q=29.0 size=     419kB time=00:00:06.25 bitrate= 548.7kbits/s dup=33 drop=0    
  
              frame=  212 fps= 27 q=29.0 size=     461kB time=00:00:06.72 bitrate= 562.4kbits/s dup=35 drop=0    
  
              frame=  223 fps= 26 q=29.0 size=     495kB time=00:00:07.04 bitrate= 576.6kbits/s dup=37 drop=0    
  
              frame=  240 fps= 26 q=29.0 size=     574kB time=00:00:07.59 bitrate= 618.9kbits/s dup=40 drop=0    
  
              frame=  245 fps= 20 q=-1.0 Lsize=     834kB time=00:00:08.17 bitrate= 835.9kbits/s dup=41 drop=0    
  
              video:696kB audio:128kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.134396%
  
              [libx264 @ 0x161e820] frame I:2     Avg QP:22.05  size: 10777
  
              [libx264 @ 0x161e820] frame P:187   Avg QP:22.67  size:  3323
  
              [libx264 @ 0x161e820] frame B:56    Avg QP:23.98  size:  1242
  
              [libx264 @ 0x161e820] consecutive B-frames: 54.7% 44.1%  1.2%  0.0%
  
              [libx264 @ 0x161e820] mb I  I16..4: 33.5% 63.9%  2.5%
  
              [libx264 @ 0x161e820] mb P  I16..4:  1.9%  1.8%  0.0%  P16..4: 46.9%  4.7%  6.4%  0.0%  0.0%    skip:38.3%
  
              [libx264 @ 0x161e820] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 34.4%  0.5%  0.0%  direct: 3.1%  skip:61.8%  L0:41.1% L1:57.8% BI: 1.1%
  
              [libx264 @ 0x161e820] 8x8 transform intra:51.1% inter:96.1%
  
              [libx264 @ 0x161e820] coded y,uvDC,uvAC intra: 25.1% 86.2% 30.4% inter: 9.5% 38.5% 1.1%
  
              [libx264 @ 0x161e820] i16 v,h,dc,p: 41%  5% 11% 43%
  
              [libx264 @ 0x161e820] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36%  6% 48%  1%  1%  3%  1%  3%  1%
  
              [libx264 @ 0x161e820] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 54% 10% 15%  3%  3%  8%  2%  5%  2%
  
              [libx264 @ 0x161e820] i8c dc,h,v,p: 66% 12% 18%  3%
  
              [libx264 @ 0x161e820] Weighted P-Frames: Y:0.0% UV:0.0%
  
              [libx264 @ 0x161e820] ref P L0: 66.7%  5.8% 17.5% 10.0%
  
              [libx264 @ 0x161e820] ref B L0: 81.1% 18.9%  0.0%
  
              [libx264 @ 0x161e820] ref B L1: 99.5%  0.5%
  
              [libx264 @ 0x161e820] kb/s:697.87
  
              "

  And my video which has .mpg extention its best quality : https://imcajans.com/img/videos/99999.mpg

  And my video which coverted from .mpg to .mp4 its bad quality : https://imcajans.com/img/videos/99999.mp4