Recherche avancée

Sur d’autres sites (9116)

• GStreamer with MPEG-TS Video4Linux ATSC/DVB Recording

  21 juin 2013, par Dustin Oprea

  I'm having an impossible time setting up a filtergraph to read from a recording that I made from my DVB video4linux device. Any help would be vastly appreciated.

  How I made the recording :

  To tune the channel :

  azap -c ~/channels.conf "Florida"

  To record the channel :

  cat /dev/dvb/adapter0/dvr0 > /tmp/test

  This is the way that recordings must be made (I can not use any GST DVB plugins to do this for me).

  I used tstools to identify that the recording is a TS stream :

  tstools/bin$ ./stream_type ~/recordings/20130129-202049
  
  Reading from /home/dustin/recordings/20130129-202049
  
  It appears to be Transport Stream

  ...but that there are no PAT/PMT frames :

  tstools/bin$ ./tsinfo ~/recordings/20130129-202049
  
  Reading from /home/dustin/recordings/20130129-202049
  
  Scanning 10000 TS packets
  
  
  
  Found 0 PAT packets and 0 PMT packets in 10000 TS packets

  I was able to produce a single ES (elementary stream) stream, by running ts2es :

  tstools/bin$ ./ts2es -pid 97 ~/recordings/20130129-202049 ~/recordings/20130129-202049.es
  
  Reading from /home/dustin/recordings/20130129-202049
  
  Writing to   /home/dustin/recordings/20130129-202049.es
  
  Extracting packets for PID 0061 (97)
  
  !!! 4 bytes ignored at end of file - not enough to make a TS packet
  
  Extracted 219258 of 248113 TS packets

  I am able to play the ES stream (even though the video is frozen on the first frame) :

  gst-launch-0.10 filesrc location=~/recordings/20130129-202049.es ! decodebin2 ! autovideosink
  
  gst-launch-0.10 filesrc location=~/recordings/20130129-202049.es ! decodebin2 ! xvimagesink
  
  gst-launch-0.10 playbin2 uri=file:///home/dustin/recordings/20130129-202049.es

  No matter what I do, though, I can't get the original TS file to open. However, it opens in Mplayer/FFMPEG, perfectly (but not VLC). This is the output of FFMPEG :

  ffmpeg -i 20130129-202049
  
  
  
  ffmpeg version 0.8.5-4:0.8.5-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
  
    built on Jan 24 2013 18:03:14 with gcc 4.6.3
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [mpeg2video @ 0x9be7be0] mpeg_decode_postinit() failure
  
      Last message repeated 4 times
  
  [mpegts @ 0x9be3aa0] max_analyze_duration reached
  
  [mpegts @ 0x9be3aa0] PES packet size mismatch
  
  Input #0, mpegts, from '20130129-202049':
  
    Duration: 00:03:39.99, start: 9204.168844, bitrate: 1696 kb/s
  
      Stream #0.0[0x61]: Video: mpeg2video (Main), yuv420p, 528x480 [PAR 40:33 DAR 4:3], 15000 kb/s, 30.57 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0.1[0x64]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
  
  At least one output file must be specified

  This tells us that the video stream has PID 0x61 (97).

  I have been trying for a few days, so the following are only examples of a couple of attempts. I'll provide the playbin2 example first, since I know that thousands of people will respond, insisting that I just use that. It doesn't work.

  gst-launch-0.10 playbin2 uri=file:///home/dustin/recordings/20130129-202049
  
  
  
  Setting pipeline to PAUSED ...
  
  Pipeline is PREROLLING ...
  
  ERROR: from element /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMpegTSDemux:mpegtsdemux0: Could not determine type of stream.
  
  Additional debug info:
  
  gstmpegtsdemux.c(2931): gst_mpegts_demux_sink_event (): /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMpegTSDemux:mpegtsdemux0:
  
  No valid streams found at EOS
  
  ERROR: pipeline doesn't want to preroll.
  
  Setting pipeline to NULL ...
  
  Freeing pipeline ...

  It fails [probably] because no PID has been specified with which to find the video (the "EOS" error, I think).

  Naturally, I tried the following to start by demuxing the TS format. I believe it's the "es-pids" property that receives the PID in the absence of PMT information (which tstools said there weren't any, above), but I tried "program-number", too, just in case. gst-inspect indicates that one is hex and the other is decimal :

  gst-launch-0.10 -v filesrc location=20130129-202049 ! mpegtsdemux es-pids=0x61 ! fakesink
  
  gst-launch-0.10 -v filesrc location=20130129-202049 ! mpegtsdemux program-number=97 ! fakesink

  Output :

  gst-launch-0.10 filesrc location=20130129-202049 ! mpegtsdemux es-pids=0x61 ! fakesink
  
  Setting pipeline to PAUSED ...
  
  Pipeline is PREROLLING ...
  
  ERROR: from element /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0: Could not determine type of stream.
  
  Additional debug info:
  
  gstmpegtsdemux.c(2931): gst_mpegts_demux_sink_event (): /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0:
  
  No valid streams found at EOS
  
  ERROR: pipeline doesn't want to preroll.
  
  Setting pipeline to NULL ...
  
  Freeing pipeline ...
  
  dustin@dustinmicro:~/recordings$ gst-launch-0.10 -v filesrc location=20130129-202049 ! mpegtsdemux es-pids=0x61 ! fakesink
  
  Setting pipeline to PAUSED ...
  
  Pipeline is PREROLLING ...
  
  ERROR: from element /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0: Could not determine type of stream.
  
  Additional debug info:
  
  gstmpegtsdemux.c(2931): gst_mpegts_demux_sink_event (): /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0:
  
  No valid streams found at EOS
  
  ERROR: pipeline doesn't want to preroll.
  
  Setting pipeline to NULL ...
  
  Freeing pipeline ...
  
  dustin@dustinmicro:~/recordings$ gst-launch-0.10 -v filesrc location=20130129-202049 ! mpegtsdemux es-pids=0x61 ! fakesink
  
  Setting pipeline to PAUSED ...
  
  Pipeline is PREROLLING ...
  
  ERROR: from element /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0: Could not determine type of stream.
  
  Additional debug info:
  
  gstmpegtsdemux.c(2931): gst_mpegts_demux_sink_event (): /GstPipeline:pipeline0/GstMpegTSDemux:mpegtsdemux0:
  
  No valid streams found at EOS
  
  ERROR: pipeline doesn't want to preroll.
  
  Setting pipeline to NULL ...
  
  Freeing pipeline ...

  However, when I try mpegpsdemux (for program streams (PS), as opposed to transport streams (TS)), I get further :

  gst-launch-0.10 filesrc location=20130129-202049 ! mpegpsdemux ! fakesink
  
  
  
  Setting pipeline to PAUSED ...
  
  Pipeline is PREROLLING ...
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_event_new_new_segment_full: assertion `position != -1' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `mini_object != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_pad_push_event: assertion `event != NULL' failed
  
  Pipeline is PREROLLED ...
  
  Setting pipeline to PLAYING ...
  
  New clock: GstSystemClock
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_event_new_new_segment_full: assertion `position != -1' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `mini_object != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_pad_push_event: assertion `event != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_event_new_new_segment_full: assertion `position != -1' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `mini_object != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_pad_push_event: assertion `event != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_event_new_new_segment_full: assertion `position != -1' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `mini_object != NULL' failed
  
  
  
  (gst-launch-0.10:14805): GStreamer-CRITICAL **: gst_pad_push_event: assertion `event != NULL' failed
  
  
  
  
  
  ...
  
  
  
  
  
  Got EOS from element "pipeline0".
  
  Execution ended after 1654760008 ns.
  
  Setting pipeline to PAUSED ...
  
  Setting pipeline to READY ...
  
  Setting pipeline to NULL ...
  
  Freeing pipeline ...

  I'll still get the same problem whenever I use the mpegtsdemux, even if it follows mpegpsdemux, above.

  I don't understand this, since I haven't even picked a PID yet.

  What am I doing wrong ?

  Dustin

• FFMPEG av_interleaved_write_frame() : Operation not permitted

  20 octobre 2014, par camslaz

  Ok I receiving a ’av_interleaved_write_frame() : Operation not permitted’ error while trying to encode an MOV file. Firstly I need to outline the conditions behind it.

  I am encoding 12 different files of different resolution sizes and format types via a PHP script that runs on cron. Basically it grabs a 250mb HD MOV file and encodes it in 4 different frame sizes as MOV, MP4 and WMV file types.

  Now the script takes over 10mins to run and encode each of the files for the 250mb input file. I am outputting the processing times and as soon as the time on the script hits 10mins FFMPEG crashes and returns "av_interleaved_write_frame() : Operation not permitted" for the current file being encoded and all other remaining files yet to be encoded.

  If the input videos is 150MB the total time the script runs for is under 10mins so it encodes all of the videos fine. Additionally if I run the FFMPEG command on the individual file that it fails on for the 250mb file it encodes the file with no issues.

  From doing to research on the error "av_interleaved_write_frame()" it seems it is related to timestamps of what I understand to be of the input file. But in saying that it doesn’t seem to be the case in my instance because I can encode the file with no problem if I do it individually.

  example ffmpeg command

  ffmpeg -i GVowbt3vsrXL.mov -s 1920x1080 -sameq -vf "unsharp" -y GVowbt3vsrXL_4.wmv

  Error output on the failed file at 10mins. Remember there is no issue with the command if I run it by itself it is only when the script hits 10mins.

  'output' =>
  
       array (
  
         0 => 'FFmpeg version SVN-r24545, Copyright (c) 2000-2010 the FFmpeg developers',
  
         1 => '  built on Aug 20 2010 23:32:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)',
  
         2 => '  configuration: --enable-shared --enable-gpl --enable-pthreads --enable-nonfree --cpu=opteron --extra-cflags=\'-O3 -march=opteron -mtune=opteron\' --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-avfilter --enable-filter=movie --enable-avfilter-lavf --enable-swscale',
  
         3 => '  libavutil     50.23. 0 / 50.23. 0',
  
         4 => '  libavcore      0. 1. 0 /  0. 1. 0',
  
         5 => '  libavcodec    52.84. 1 / 52.84. 1',
  
         6 => '  libavformat   52.77. 0 / 52.77. 0',
  
         7 => '  libavdevice   52. 2. 0 / 52. 2. 0',
  
         8 => '  libavfilter    1.26. 1 /  1.26. 1',
  
         9 => '  libswscale     0.11. 0 /  0.11. 0',
  
         10 => 'Input #0, mov,mp4,m4a,3gp,3g2,mj2, from \'/home/hdfootage/public_html/process/VideoEncode/_tmpfiles/GVowbt3vsrXL/GVowbt3vsrXL.mov\':',
  
         11 => '  Metadata:',
  
         12 => '    major_brand     : qt',
  
         13 => '    minor_version   : 537199360',
  
         14 => '    compatible_brands: qt',
  
         15 => '  Duration: 00:00:20.00, start: 0.000000, bitrate: 110802 kb/s',
  
         16 => '    Stream #0.0(eng): Video: mjpeg, yuvj422p, 1920x1080 [PAR 72:72 DAR 16:9], 109386 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc',
  
         17 => '    Stream #0.1(eng): Audio: pcm_s16be, 44100 Hz, 2 channels, s16, 1411 kb/s',
  
         18 => '[buffer @ 0xdcd0e0] w:1920 h:1080 pixfmt:yuvj422p',
  
         19 => '[unsharp @ 0xe00280] auto-inserting filter \'auto-inserted scaler 0\' between the filter \'src\' and the filter \'Filter 0 unsharp\'',
  
         20 => '[scale @ 0xe005b0] w:1920 h:1080 fmt:yuvj422p -> w:1920 h:1080 fmt:yuv420p flags:0xa0000004',
  
         21 => '[unsharp @ 0xe00280] effect:sharpen type:luma msize_x:5 msize_y:5 amount:1.00',
  
         22 => '[unsharp @ 0xe00280] effect:none type:chroma msize_x:0 msize_y:0 amount:0.00',
  
         23 => 'Output #0, asf, to \'/home/hdfootage/public_html/process/VideoEncode/_tmpfiles/GVowbt3vsrXL/GVowbt3vsrXL_4.wmv\':',
  
         24 => '  Metadata:',
  
         25 => '    WM/EncodingSettings: Lavf52.77.0',
  
         26 => '    Stream #0.0(eng): Video: msmpeg4, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 25 tbc',
  
         27 => '    Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, 2 channels, s16, 64 kb/s',
  
         28 => 'Stream mapping:',
  
         29 => '  Stream #0.0 -> #0.0',
  
         30 => '  Stream #0.1 -> #0.1',
  
         31 => 'Press [q] to stop encoding',
  
         32 => '[msmpeg4 @ 0xdccb50] warning, clipping 1 dct coefficients to -127..127',

  Then it errors

  frame=   75 fps=  5 q=1.0 size=   12704kB time=2.90 bitrate=3588 6.0kbits av_interleaved_write_frame(): Operation not permitted',
  
       )

  Has any anybody encountered this sort of problem before ? It seems to be something to do with the timestamps but only because the script is running for a period longer then 10mins. It maybe related to PHP/Apache config but I don’t know if it is FFMPEG or if it is server config I need to be looking at.

• Using ffmpeg with MAMP local server

  22 mai 2012, par dirk_22

  In my MAMP local server home folder on Mac OS X (htdocs), I have a bunch of images (labeled image0 through image(n)) which I would like to stitch together into a jpeg using ffmpeg. When I type the following command into terminal, a .mpg file is successfully generated.

  ffmpeg -f image2 -i image%d.jpg videofile.mpg

  However, when I try to execute the same command using the php code pasted below, nothing seems to happen.

  <?php
  
  shell_exec('ffmpeg -f image2 -i image%d.jpg videofile.mpg');
  
  ?>

  I've copied the installed ffmpeg folder on my home directory into htdocs, but ffmpeg doesn't seem to be accessed. I'm very new to PHP, so please feel free to point out any gross errors in my code. I'd just like the php script to accomplish the same task which terminal executes upon input of the aforementioned command. I'd welcome any and all advice. Cheers.