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  • ffmpeg concat batch loop with text file

    4 octobre 2013, par Lisa Jacobs

    I'm trying to batch a concat loop for a series of avi files where I need to add to each AVI a preroll and postroll movie.

    Here's what I've tried:

    _input.txt file:

    file '3D_preroll.avi'
file '%%a'
file '3D_postroll.avi'

    concat.bat file:

    for %%a in ("*.avi") do ffmpeg -f concat -i _input.txt -c:v libx264 -b:v 1700k -minrate 1500k -maxrate 1900k -bufsize 1900k -deinterlace -acodec libvo_aacenc -ac 2 -ar 48000 -ab 92k "%%a"_432p.mp4
pause

    Unfortunately, I get the following error message before FFMPEG crashes: Impossible to open '%%a'

    What am I doing wrong?

    Thank you :)

  • Why doesnt this method redirect my output from .exe [ffmpeg] ?

    4 octobre 2013, par Exitos

    I have the method:

    public static string StartProcess(string exePathArg, string argumentsArg, int timeToWaitForProcessToExit)
    {
        string retMessage = "";

        using (Process p = new Process())
        {
            p.StartInfo.FileName = exePathArg;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.Arguments = argumentsArg;
            p.StartInfo.UseShellExecute = false;



            try
            {
                p.Start();
                StreamReader myOutput = p.StandardOutput;

                retMessage = "STANDARD OUTPUT: " +  myOutput.ReadToEnd();

                p.WaitForExit(timeToWaitForProcessToExit);
            }
            catch (Exception ex)
            { 
                retMessage = "EXCEPTION THROWN: " + ex.ToString();

            }
            finally
            {
                try
                {
                    p.Kill();
                }
                catch { }
            }
        }

        return retMessage;
    }

    But it doesnt redirect my output to retMessage. Anyone any ideas? I tested the arguments in a bat file and output is definitely output.

    Cheers, Pete

  • Hot to copy frame data from FFmpegSource2 (FFMS2) FFMS_Frame struct to OpenCV Mat ?

    4 octobre 2013, par Yashil

    I'm trying to read video file using FFmpegSource2 (FFMS2) and then process frames using OpenCV. What is the proper and efficient way to copy frame data from a FFMS_Frame struct returned by FFMS_GetFrame function to an OpenCV Mat?

    Thank you very much in advance.

  • How to solve issue for converting ismv file of h264 video codec and aac audio codec ?

    4 octobre 2013, par Priyal

    I want to convert transmux ismv file to mp4 format. ISMV file is encoded withe the following ffmpeg detail:

       Metadata:
   major_brand     : isml
   minor_version   : 1
   compatible_brands: piffiso2
   creation_time   : 2013-10-03 14:10:41
   Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
   Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
                     kb/s (default)
   Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Audio
   Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
                     7 tbr, 10000k tbn, 20000k tbc (default)
Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Video
   Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
   Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Text

    I used the following ffmpeg command to transmux:

     ffmpeg -y -ss 00:00:10 -i Encoder1.ismv -vcodec libx264 -ar 44100 -t 40 -preset slow -qp 0  
 Encoder.mp4

    I got output as:

     ffmpeg version N-56010-g54d628a Copyright (c) 2000-2013 the FFmpeg developers
 built on Sep  4 2013 00:44:27 with gcc 4.7.3 (GCC)
 configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
 le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
 e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
 ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
 ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
 eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
 amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
 enable-libxvid --enable-zlib
     libavutil      52. 43.100 / 52. 43.100
     libavcodec     55. 31.100 / 55. 31.100
     libavformat    55. 16.100 / 55. 16.100
     libavdevice    55.  3.100 / 55.  3.100
     libavfilter     3. 83.102 /  3. 83.102
     libswscale      2.  5.100 /  2.  5.100
     libswresample   0. 17.103 /  0. 17.103
     libpostproc    52.  3.100 / 52.  3.100
 [aac @ 040f1ba0] TYPE_FIL: Input buffer exhausted before END element found
 [h264 @ 00353120] AVC: nal size -729776398
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -570515285
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -1477874754
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -712314563
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -23151524
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -592499201
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size 225768173
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size 698187359
 [h264 @ 00353120] AVC: nal size 635127544
 [h264 @ 00353120] no frame!
 [h264 @ 00353120] AVC: nal size -1242688339
 [h264 @ 00353120] AVC: nal size 269543071
 [h264 @ 00353120] no frame!
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] decoding for stream 1 failed
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] Could not find codec parameters for stream
  1 (Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s): unspecified pixel form
  at Consider increasing the value for the 'analyzeduration' and 'probesize' options
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\inetpub\media\archives\DEFAULT WEB S
  ITE\PushToPUblishPoint\Eagan_12034_Soccer_3-10-2013_14_10_19-isml\2013-10-03-14-
  10-35-436\Segment001\Encoder1.ismv':
   Metadata:
   major_brand     : isml
   minor_version   : 1
   compatible_brands: piffiso2
   creation_time   : 2013-10-03 14:10:41
   Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
   Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
                     kb/s (default)
    Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Audio
   Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
                     7 tbr, 10000k tbn, 20000k tbc (default)
   Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Video
   Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
   Metadata:
   creation_time   : 2013-10-03 14:10:41
   handler_name    : Text

 [buffer @ 04679480] Unable to parse option value "-1" as pixel format
               Last message repeated 1 times
 [buffer @ 04679480] Error setting option pix_fmt to value -1.
 [graph 0 input from stream 0:1 @ 040f7380] Error applying options to the filter.

 Error opening filters!

    Please suggest the solution for Windows OS

  • Improve the quality of webm video using ffmpeg

    3 octobre 2013, par Leke

    I'm trying out two codecs and was wondering if I could improve the results of the webm output ...

    ffmpeg -i test.ts -t 10 -f webm -vcodec libvpx output.webm

    to match the quality of the mp4 output...

    ffmpeg -i test.ts -t 10 -b 1500k -vcodec libx264 output.mp4

    What settings would give me the best webm rip?

    Thanks.

    Edit: Here is an error output when trying some rip improvements... 

    ffmpeg -i test.ts -c:v libvpx -crf 4 -b:v 1M -c:a libvorbis output.webm

ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
  built on Apr  2 2013 17:00:59 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 @ 0x9cde5c0] mpeg_decode_postinit() failure
    Last message repeated 4 times
[mpegts @ 0x9cda240] max_analyze_duration reached
[mpegts @ 0x9cda240] PES packet size mismatch
Input #0, mpegts, from 'test.ts':
  Duration: 00:03:59.53, start: 4630.845422, bitrate: 1977 kb/s
    Stream #0.0[0x20b]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 64:45 DAR 16:9], 15000 kb/s, 25.60 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1[0x28f]: Audio: mp2, 48000 Hz, stereo, s16, 224 kb/s

Unrecognized option 'c:v'
Failed to set value 'libvpx' for option 'c:v'

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