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• How to get xml/json output when ffprobe could not find codec parameters for a stream

  9 juin 2015, par user2421731

  I was using ffprobe on a mkv file in order to get some info about the chapter structure so as to split the mkv using ffmpeg.

  ffprobe miku.mkv -print_format xml

  However ffprobe encountered an scodec error(does not affect chapter info) and I could not get the info by setting print format. I know there are ways like pipeline to bypass the error, but I still want to get the xml/json file so it can be parsed easily.

  I wonder if there is a way to ingore the error and output the xml/json file or is there a solution to the error. (But I prefer a solution to the former, because I don’t know what any errors I might encounter and I’d like to see it works as long as the chapter info is available)

  The error was like this.

  ffprobe version N-60899-ga8ad7e4 Copyright (c) 2007-2014 the FFmpeg developers
    built on Feb 25 2014 04:04:01 with gcc 4.8.2 (GCC)
    configuration : —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-zlib
    libavutil      52. 66.100 / 52. 66.100
    libavcodec     55. 52.102 / 55. 52.102
    libavformat    55. 33.100 / 55. 33.100
    libavdevice    55. 10.100 / 55. 10.100
    libavfilter     4.  1.103 /  4.  1.103
    libswscale      2.  5.101 /  2.  5.101
    libswresample   0. 18.100 /  0. 18.100
    libpostproc    52.  3.100 / 52.  3.100
  [matroska,webm @ 0000000002945080] Could not find codec parameters for stream 3 (Subtitle : hdmv_pgs_subtitle) : unspecified size
  Consider increasing the value for the ’analyzeduration’ and ’probesize’ options
  Input #0, matroska,webm, from ’[Hatsune Miku Magical Mirai 2013][JPN][BDRIP][1080P][H264_FLAC_DTS-HDMA].mkv’ :
    Metadata :
      encoder : libebml v1.3.0 + libmatroska v1.4.1
      creation_time : 2014-02-18 22:57:12
    Duration : 01:58:00.08, start : 0.000000, bitrate : 16495 kb/s
      Chapter #0.0 : start 0.000000, end 30.030000
      Metadata :
        title : Start
      Chapter #0.1 : start 30.030000, end 149.749000
      Metadata :
        title : 00. Opening Music
  ......
  

• ffmpeg 2nd pass segfault [migrated]

  25 février 2014, par Mike Flynn

  I'm trying to get an old transcoding server up and running in a new environment and I'm experiencing some issues getting the well tested ffmpeg commands to work in the new environment.

  It's a 2 pass encoding strategy, and the first pass runs just fine every time, the 2nd pass consistently fails with the following :

  [libx264 @ 0x3925fc0] 2nd pass has more frames than 1st pass (1478)
  
  [libx264 @ 0x3925fc0] continuing anyway, at constant QP=14
  
  [libx264 @ 0x3925fc0] disabling adaptive B-frames
  
  [libx264 @ 0x3925fc0] specified frame type is not compatible with max B-frames
  
  Segmentation fault

  Here is the command we're using for each pass :

  Pass 1 :

  ffmpeg -y -i input.mp4 -pass 1 -b 774000 -ab 128000 -s 640x360 -passlogfile ffmpeglog -vcodec libx264 -g 90 -bf 3 -refs 1 -b_strategy 1 -coder 1 -qmin 10 -qmax 51 -sc_threshold 40 -flags +loop -cmp chroma -me_range 16 -me_method dia -subq 2 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -direct-pred 3 -trellis 0 -partitions -parti8x8-parti4x4-partp8x8-partb8x8 -r 30 -keyint_min 25 -wpredp 2 -rc_lookahead 50 -acodec libfaac -ar 44100 pass1.mp4

  Pass 2 :

  ffmpeg -y -i pass1.mp4 -pass 2 -b 774000 -ab 128000 -s 640x360 -passlogfile ffmpeglog -vcodec libx264 -g 90 -bf 3 -refs 8 -b_strategy 1 -coder 1 -qmin 10 -qmax 51 -sc_threshold 40 -flags +loop -cmp chroma -me_range 16 -me_method umh -subq 9 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -direct-pred 3 -trellis 2 -partitions +parti8x8+parti4x4+partp8x8+partp4x4+partb8x8 -r 30 -keyint_min 25 -wpredp 2 -rc_lookahead 60 -acodec libfaac -ar 44100 pass2.mp4

  ...and here is my ffmpeg configuration :

  ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Feb 25 2014 19:23:21 with gcc 4.6.3 (GCC) 20120306 (Red Hat 4.6.3-2)
  
    configuration: --enable-gpl --enable-libmp3lame --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-version3 --enable-libfaac --enable-nonfree
  
    libavutil      52. 48.101 / 52. 48.101
  
    libavcodec     55. 39.101 / 55. 39.101
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  Any ideas would be greatly appreciated !

• Creating a video using ffmpeg in a PHP script

  30 décembre 2017, par Femzy

  I have been trying to solve this problem for a while now, but i have not got it through please someone should help me..
  My main objective is to collect user’n inputs and convert it to a video with black background, then the input text will be moving from left to right while the video is playing with audio in the background. Currently i was suggested to use "drawtext" but i have not find it working
  This is the code I use just to test the drawtext but the thing is, if i try it 10 times it will create a video file ones in many times i tried and even the video file would have 0 kb in size
  The Below code is my code

  The Below is the Report i got from the not working ffmpeg cmmand

  echo shell_exec('ffmpeg -f lavfi -i testsrc=duration=5:size=800x600:rate=30 -vf drawtext="fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf:textfile=text.txt: x=(w-tw)/2: y=h-(2*lh): fontcolor=white: box=1: boxcolor=0x00000000@1" -preset ultrafast outex.mp4');
  
  
  
  ffmpeg started on 2017-12-29 at 16:43:24

  Report written to "ffmpeg-20171229-164324.log"
  Command line :
  ffmpeg -f test.mp4 -vf "drawtext=fontsize=64:fontcolor=white@0.8:box=1:boxcolor=black@0.75:boxborderw=16:fontfile=OCRA.ttf:text=my_video:x=(w-tw)/2:y=th" textover09.mpg -report
  ffmpeg version git-2017-12-28-be4dfbf Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  configuration : —prefix=/usr/local/ffmpeg —extra-cflags=-I/usr/local/ffmpeg/include —extra-ldflags=-L/usr/local/ffmpeg/lib —bindir=/usr/local/bin —enable-gpl —enable-nonfree —enable-libfdk_aac —enable-libmp3lame —enable-libopus —enable-libvpx —enable-libx264 —enable-libtheora —enable-filter=drawtext
  libavutil 56. 7.100 / 56. 7.100
  libavcodec 58. 9.100 / 58. 9.100
  libavformat 58. 3.100 / 58. 3.100
  libavdevice 58. 0.100 / 58. 0.100
  libavfilter 7. 8.100 / 7. 8.100
  libswscale 5. 0.101 / 5. 0.101
  libswresample 3. 0.101 / 3. 0.101
  libpostproc 55. 0.100 / 55. 0.100
  Splitting the commandline.
  Reading option ’-f’ ... matched as option ’f’ (force format) with argument ’test.mp4’.
  Reading option ’-vf’ ... matched as option ’vf’ (set video filters) with argument ’drawtext=fontsize=64:fontcolor=white@0.8:box=1:boxcolor=black@0.75:boxborderw=16:fontfile=OCRA.ttf:text=my_video:x=(w-tw)/2:y=th’.
  Reading option ’textover09.mpg’ ... matched as output url.
  Reading option ’-report’ ... matched as option ’report’ (generate a report) with argument ’1’.
  Finished splitting the commandline.
  Parsing a group of options : global .
  Applying option report (generate a report) with argument 1.
  Successfully parsed a group of options.
  Parsing a group of options : output url textover09.mpg.
  Applying option f (force format) with argument test.mp4.
  Applying option vf (set video filters) with argument drawtext=fontsize=64:fontcolor=white@0.8:box=1:boxcolor=black@0.75:boxborderw=16:fontfile=OCRA.ttf:text=my_video:x=(w-tw)/2:y=th.
  Successfully parsed a group of options.
  Opening an output file : textover09.mpg.
  [NULL @ 0x4671e80] Requested output format ’test.mp4’ is not a suitable output format
  textover09.mpg : Invalid argument

  This is Another report i got, in this report it is saying" Drawtext no such filters"

  ffmpeg started on 2017-12-29 at 09:00:43
  
  Report written to "ffmpeg-20171229-090043.log"
  
  Command line:
  
  ffmpeg -i test.mp4 -vf "drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf:textfile=text.txt:reload=1:y=h-line_h-10:x=(W/tw)*n" textover7.mpg -report
  
  ffmpeg version git-2017-12-28-be4dfbf Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  
    configuration: --prefix=/usr/local/ffmpeg --extra-cflags=-I/usr/local/ffmpeg/include --extra-ldflags=-L/usr/local/ffmpeg/lib --bindir=/usr/local/bin --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libtheora --enable-filter=drawtext
  
    libavutil      56.  7.100 / 56.  7.100
  
    libavcodec     58.  9.100 / 58.  9.100
  
    libavformat    58.  3.100 / 58.  3.100
  
    libavdevice    58.  0.100 / 58.  0.100
  
    libavfilter     7.  8.100 /  7.  8.100
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  Splitting the commandline.
  
  Reading option '-i' ... matched as input url with argument 'test.mp4'.
  
  Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf:textfile=text.txt:reload=1:y=h-line_h-10:x=(W/tw)*n'.
  
  Reading option 'textover7.mpg' ... matched as output url.
  
  Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option report (generate a report) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url test.mp4.
  
  Successfully parsed a group of options.
  
  Opening an input file: test.mp4.
  
  [NULL @ 0x42d2d80] Opening 'test.mp4' for reading
  
  [file @ 0x42d3700] Setting default whitelist 'file,crypto'
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] ISO: File Type Major Brand: mp42
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] Unknown dref type 0x206c7275 size 12
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] Processing st: 0, edit list 0 - media time: 0, duration: 13049
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] Unknown dref type 0x206c7275 size 12
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] Before avformat_find_stream_info() pos: 112452 bytes read:141356 seeks:0 nb_streams:2
  
  [h264 @ 0x42d4640] nal_unit_type: 7, nal_ref_idc: 3
  
  [h264 @ 0x42d4640] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x42d4640] nal_unit_type: 5, nal_ref_idc: 3
  
  [h264 @ 0x42d4640] Format yuv420p chosen by get_format().
  
  [h264 @ 0x42d4640] Reinit context to 640x368, pix_fmt: yuv420p
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x42d4640] nal_unit_type: 1, nal_ref_idc: 2
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] All info found
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x42d2d80] After avformat_find_stream_info() pos: 159483 bytes read:174124 seeks:0 frames:9
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2014-01-19T03:12:30.000000Z
  
    Duration: 00:07:15.00, start: 0.000000, bitrate: 201 kb/s
  
      Stream #0:0(und), 8, 1/30: Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 103 kb/s, 15 fps, 15 tbr, 30 tbn, 30 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und), 1, 1/44100: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-01-19T03:12:31.000000Z
  
        handler_name    : IsoMedia File Produced by Google, 5-11-2011
  
  Successfully opened the file.
  
  Parsing a group of options: output url textover7.mpg.
  
  Applying option vf (set video filters) with argument drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf:textfile=text.txt:reload=1:y=h-line_h-10:x=(W/tw)*n.
  
  Successfully parsed a group of options.
  
  Opening an output file: textover7.mpg.
  
  [file @ 0x42e9e40] Setting default whitelist 'file,crypto'
  
  Successfully opened the file.
  
  detected 12 logical cores
  
  [h264 @ 0x43ece00] nal_unit_type: 7, nal_ref_idc: 3
  
  [h264 @ 0x43ece00] nal_unit_type: 8, nal_ref_idc: 3
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> mpeg1video (native))
  
    Stream #0:1 -> #0:1 (aac (native) -> mp2 (native))
  
  Press [q] to stop, [?] for help
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x43ece00] nal_unit_type: 5, nal_ref_idc: 3
  
  [h264 @ 0x43ece00] Format yuv420p chosen by get_format().
  
  [h264 @ 0x43ece00] Reinit context to 640x368, pix_fmt: yuv420p
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x43f91c0] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x43376c0] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x4339d40] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x43c1840] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x43de0c0] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x439b000] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x445ae80] nal_unit_type: 1, nal_ref_idc: 2
  
  [graph_1_in_0_1 @ 0x4657a40] Setting 'time_base' to value '1/44100'
  
  [graph_1_in_0_1 @ 0x4657a40] Setting 'sample_rate' to value '44100'
  
  [graph_1_in_0_1 @ 0x4657a40] Setting 'sample_fmt' to value 'fltp'
  
  [graph_1_in_0_1 @ 0x4657a40] Setting 'channel_layout' to value '0x3'
  
  [graph_1_in_0_1 @ 0x4657a40] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x3
  
  [format_out_0_1 @ 0x4657cc0] Setting 'sample_fmts' to value 's16'
  
  [format_out_0_1 @ 0x4657cc0] Setting 'sample_rates' to value '44100|48000|32000|22050|24000|16000'
  
  [format_out_0_1 @ 0x4657cc0] Setting 'channel_layouts' to value '0x4|0x3'
  
  [format_out_0_1 @ 0x4657cc0] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_1'
  
  [AVFilterGraph @ 0x42d2c40] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed
  
  [auto_resampler_0 @ 0x4658dc0] [SWR @ 0x4659140] Using fltp internally between filters
  
  [auto_resampler_0 @ 0x4658dc0] ch:2 chl:stereo fmt:fltp r:44100Hz -> ch:2 chl:stereo fmt:s16 r:44100Hz
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x4477580] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x4493cc0] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x44b0340] nal_unit_type: 1, nal_ref_idc: 2
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x44cca80] nal_unit_type: 1, nal_ref_idc: 2
  
  [AVFilterGraph @ 0x466e4c0] No such filter: 'drawtext'
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #0:0
  
  [h264 @ 0x44e91c0] nal_unit_type: 1, nal_ref_idc: 2
  
  [AVIOContext @ 0x43c0280] Statistics: 0 seeks, 0 writeouts
  
  [AVIOContext @ 0x42db980] Statistics: 174124 bytes read, 0 seeks
  
  Conversion failed!