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• Directshow how to use Monogram X264 Encoder to capture video from webcam ?

  17 août 2016, par Phung Tien Trieu

  I am new with Directshow. Today i am trying to use Monogram x264 encoder filter with GraphStudioNext. But when i connect camera to monogram x264 encoder filter. There is an error. I don’t know what intermediate filter do i need. Can you please help ?

  See the picture : http://tientrieu.net/wp-content/uploads/2016/08/how_to_use_monogram_x264_encoder.png

• ffmpeg error : Could not write header for output file #0 (incorrect codec parameters ?) : Muxer not found

  30 janvier 2016, par Benjamin Russell

  I am trying to segment a mp4 video file for HLS playback and I am getting the following error :

  "Could not write header for output file #0 (incorrect codec parameters
   ?) : Muxer not found"

  Does anyone know what I am doing wrong ?

  input command :

  sudo ffmpeg -y -i adwd.mp4 -vcodec copy -acodec copy -force_key_frames 30 -map 0  -f segment segment_list adwd.m3u8 -segment_time 10 -segment_format mpeg_ts -segment_list_type m3u8 segment%d.ts
  
  
  
  
  
      ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
  
        built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
        configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.5 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
  
        libavutil      54. 31.100 / 54. 31.100
  
        libavcodec     56. 60.100 / 56. 60.100
  
        libavformat    56. 40.101 / 56. 40.101
  
        libavdevice    56.  4.100 / 56.  4.100
  
        libavfilter     5. 40.101 /  5. 40.101
  
        libavresample   2.  1.  0 /  2.  1.  0
  
        libswscale      3.  1.101 /  3.  1.101
  
        libswresample   1.  2.101 /  1.  2.101
  
        libpostproc    53.  3.100 / 53.  3.100

  Video information :

  General / Container Stream #1
  
      Total Video Streams for this File.................1
  
      Total Audio Streams for this File.................1
  
      Video Codecs Used.................................AVC
  
      Audio Codecs Used.................................AAC LC
  
      File Format.......................................MPEG-4
  
      Play Time.........................................9h 1mn
  
      Total File Size...................................588 MiB
  
      Total Stream BitRate..............................152 Kbps
  
      Encoded with......................................Lavf56.40.101
  
  Video Stream #1
  
      Codec (Human Name)................................AVC
  
      Codec (FourCC)....................................avc1
  
      Codec Profile.....................................High@L2.1
  
      Frame Width.......................................426 pixels
  
      Frame Height......................................240 pixels
  
      Frame Rate........................................29.970 fps
  
      Total Frames......................................973039
  
      Display Aspect Ratio..............................16:9
  
      Scan Type.........................................Progressive
  
      Color Space.......................................YUV
  
      Codec Settings (Summary)..........................CABAC / 4 Ref Frames
  
      QF (like Gordian Knot)............................0.005
  
      Codec Settings (CABAC)............................Yes
  
      Codec Settings (Reference Frames).................4
  
      Video Stream Length...............................9h 1mn 7s 68ms
  
      Video Stream BitRate..............................15.2 Kbps
  
      Video Stream BitRate Mode.........................VBR
  
      Bit Depth.........................................8 bits
  
      Video Stream Size.................................58.9 MiB (10%)
  
      Video Encoder.....................................x264 - core 148 r2601 a0cd7d3
  
      Video Encoder (Settings)..........................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=3 / lookahead_threads=1 / 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
  
  Audio Stream #1
  
      Codec.............................................AAC
  
      Codec (FourCC)....................................40
  
      Audio Stream Length...............................9h 1mn 7s 104ms
  
      Audio Stream BitRate..............................128 Kbps
  
      Audio Stream BitRate Mode.........................CBR
  
      Number of Audio Channels..........................2
  
      Audio Channel's Positions.........................Front: L R
  
      Sampling Rate.....................................44.1 KHz
  
      Audio Stream Size.................................495 MiB (84%)

• FFmpeg splitting large files

  1er février 2016, par Yusaf Khaliq

  I need to split a large video file into multiple pieces quickly and without files with errors. The basic idea is, I have a 2GB video file which I want to change to multiple formats. I have read some encoders can not make use of more than 1 core when encoding to a different format. So I had the idea to split the large file (which is very quick) into 4/8 pieces depending on how many cores I have available on individual servers. re-encode each piece to a new format and use these to display video in sequence.

  so

  testfile.mp4

  becomes

  1. testfile_piece_1.mp4
  2. testfile_piece_2.mp4
  3. testfile_piece_3.mp4
  4. testfile_piece_4.mp4

  these can then be individually be converted.

  The solution should not be format specific. However I have found issues with mp4 files.

  I have tried the command below, which works really well and fast but creates files with errors.

  ffmpeg -i testfile.mp4 -ss 00:00:00 -t 00:20:00 -c copy testfile_piece_1.mp4

  When I play the testfile_piece_1.mp4 on VLC it works fine. An issue arises when converting the split file to a different height and width mp4 file. I would get an error similar to "moov atom not found"

  I tried adding -movflags faststart with no luck

  I then came across this library https://code.google.com/archive/p/moovrelocator/ which fixed the moov issue but I would then get an error with regards to aac "Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height"

  The other way of splitting the files is useless but involved re-encoding the file. not too bad for smaller file size but the 2GB file would probably take days to complete.

  Is there a way to split the largr file quickly without producing files with errors ? I have been working on it for days with no luck.

  Console output for comment - FFmpeg splitting large files

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/usr/share/nginx/html/uploads/testfile01.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.36.100
  
    Duration: 00:05:02.08, start: 302.120000, bitrate: 3254 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709)                                  , 1920x1080 [SAR 1:1 DAR 16:9], 3252 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (de                                  fault)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  [libx264 @ 0x165ffc0] width not divisible by 2 (853x480)
  
  Output #0, mp4, to '/usr/share/nginx/html/uploads/testfile01_480.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.36.100
  
      Stream #0:0(und): Video: h264, none, q=2-31, 128 kb/s, SAR 2560:2559 DAR 0:0                                  , 25 fps (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc56.41.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
  Error while opening encoder for output stream #0:0 - maybe incorrect parameters                                   such as bit_rate, rate, width or height

  console output 2

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/usr/share/nginx/html/uploads/testfile.mp4':
  
    Metadata:
  
      major_brand     : dash
  
      minor_version   : 0
  
      compatible_brands: iso6avc1mp41
  
      creation_time   : 2016-01-24 04:26:37
  
    Duration: 01:15:58.08, start: 0.000000, bitrate: 3163 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 3161 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2016-01-24 04:26:37
  
        handler_name    : VideoHandler
  
  [segment @ 0x1197060] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  Output #0, segment, to '/usr/share/nginx/html/uploads/testfile%02d.mp4':
  
    Metadata:
  
      major_brand     : dash
  
      minor_version   : 0
  
      compatible_brands: iso6avc1mp41
  
      encoder         : Lavf56.36.100
  
      Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 3161 kb/s, 25 fps, 25 tbr, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2016-01-24 04:26:37
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers