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  • Building my JAVA parameter array for FFMPEG

    29 janvier 2016, par user3541092

    FFmpeg Version : N-63893-gc69defd Copyright (c) 2000-2014 the FFmpeg developers
    built on Jul 16 2014 05:38:01 with gcc 4.6 (Debian 4.6.3-1)

    Machine : Amazon Linux t2.micro (free tier)

    Sample File : sample_iTunes.mov
    Sample File URL : https://support.apple.com/en-us/HT201549

    I’m trying to replicate the following FFmpeg command, using a string array and then pass this array into the Runtime.getRuntime().exec().

    ffmpeg -i file:/var/local/ffmpegtest/media_input/sample_iTunes.mov -pix_fmt yuv420p -c:v libx264 -vtag mp42 -metadata major_brand="mp42" -b:v 8000k -minrate 8000k -maxrate 10000k -ac 2 -strict experimental -c:a aac -b:a 256k -metadata:s:a:0 handler="Stereo" /var/local/ffmpegtest/media_output/sample_iTunes.mp4 -y

    NOTE : This works when I pass the full command, as a single string into Runtime.getRuntime().exec().

        String _cmd = "ffmpeg -i %s -pix_fmt yuv420p -c:v libx264 -vtag mp42 -metadata major_brand=\"mp42\" "
    
            + "-b:v 8000k -minrate 8000k -maxrate 10000k -ac 2 -strict experimental -c:a aac -b:a 256k -metadata:s:a:0 handler=\"Stereo\" %s -y";
    
    String _ffmpegCommand = String.format(_cmd, _inputFile, _outPutFile);
    
    p = Runtime.getRuntime().exec(_ffmpegCommand);
    
    BufferedReader _reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
    String _line = null;
    

    
    while((_line = _reader.readLine()) != null) {
    
        lw.writeLine(_logPath + _logName, _line);
    
        System.out.println(_line);
    
    }

    I started out with just a basic parameter list. As I add add each additional parameter, I re-build the JAR file and upload it to my EC2 instance to test for any errors.

    The following string array works :

    try
    
        {
    
            String[] _params = {"ffmpeg",
    
                       "-i",
    
                       String.format("%s", _inputFile),
    
                       "-pix_fmt",
    
                       "yuv420p",
    
                       "-c:v",
    
                       "libx264",
    
                       String.format("%s", _outPutFile),
    
                       "-y"};
    

    
            p = Runtime.getRuntime().exec(_params);
    

    
            BufferedReader _reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
            String _line = null;
    

    
            while((_line = _reader.readLine()) != null) {
    
                lw.writeLine(_logPath + _logName, _line);
    
                System.out.println(_line);
    
            }
    
        }
    
        catch (Exception e) {
    
            BufferedReader _reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
            String _line = null;
    

    
            while((_line = _reader.readLine()) != null) {
    
                lw.writeLine(_logPath + _logName, _line);
    
                System.out.println(_line);
    
            }
    

    
        }

    However, when I continue to build the array with additional parameters, I begin to experience problems (lets add -vtag mp42) :

    try
    
        {
    
            String[] _params = {"ffmpeg",
    
                       "-i",
    
                       String.format("%s", _inputFile),
    
                       "-pix_fmt",
    
                       "yuv420p",
    
                       "-c:v",
    
                       "libx264",
    
                       "-vtag", // <---- New
    
                       "mp42", // <---  New
    
                       String.format("%s", _outPutFile),
    
                       "-y"};
    

    
            p = Runtime.getRuntime().exec(_params);
    

    
            BufferedReader _reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
            String _line = null;
    

    
            while((_line = _reader.readLine()) != null) {
    
                lw.writeLine(_logPath + _logName, _line);
    
                System.out.println(_line);
    
            }
    
        }
    
        catch (Exception e) {
    
            BufferedReader _reader = new BufferedReader(new InputStreamReader(p.getErrorStream()));
    

    
            String _line = null;
    

    
            while((_line = _reader.readLine()) != null) {
    
                lw.writeLine(_logPath + _logName, _line);
    
                System.out.println(_line);
    
            }
    

    
        }

    Error Message : Could not write header for output file #0 (incorrect codec parameters ?) : Invalid data found when processing input

    Full Log output for errant trail run :

    29 Jan 2016 03:45:09 UTC - Running FFMpeg...
    
29 Jan 2016 03:45:09 UTC -  Input file: /var/local/ffmpegtest/media_input/sample_iTunes.mov
    
29 Jan 2016 03:45:09 UTC -  Output file: /var/local/ffmpegtest/media_output/sample_iTunes.mp4
    
29 Jan 2016 03:45:09 UTC - ffmpeg version N-63893-gc69defd Copyright (c) 2000-2014 the FFmpeg developers
    
29 Jan 2016 03:45:09 UTC -   built on Jul 16 2014 05:38:01 with gcc 4.6 (Debian 4.6.3-1)
    
29 Jan 2016 03:45:09 UTC -   configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
    
29 Jan 2016 03:45:09 UTC -   libavutil      52. 89.100 / 52. 89.100
    
29 Jan 2016 03:45:09 UTC -   libavcodec     55. 66.101 / 55. 66.101
    
29 Jan 2016 03:45:09 UTC -   libavformat    55. 43.100 / 55. 43.100
    
29 Jan 2016 03:45:09 UTC -   libavdevice    55. 13.101 / 55. 13.101
    
29 Jan 2016 03:45:09 UTC -   libavfilter     4.  8.100 /  4.  8.100
    
29 Jan 2016 03:45:09 UTC -   libswscale      2.  6.100 /  2.  6.100
    
29 Jan 2016 03:45:09 UTC -   libswresample   0. 19.100 /  0. 19.100
    
29 Jan 2016 03:45:09 UTC -   libpostproc    52.  3.100 / 52.  3.100
    
29 Jan 2016 03:45:09 UTC - Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/local/ffmpegtest/media_input/sample_iTunes.mov':
    
29 Jan 2016 03:45:09 UTC -   Metadata:
    
29 Jan 2016 03:45:09 UTC -     major_brand     : qt  
    
29 Jan 2016 03:45:09 UTC -     minor_version   : 537199360
    
29 Jan 2016 03:45:09 UTC -     compatible_brands: qt  
    
29 Jan 2016 03:45:09 UTC -     creation_time   : 2005-10-17 22:54:32
    
29 Jan 2016 03:45:09 UTC -   Duration: 00:01:25.50, start: 0.000000, bitrate: 307 kb/s
    
29 Jan 2016 03:45:09 UTC -     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 (default)
    
29 Jan 2016 03:45:09 UTC -     Metadata:
    
29 Jan 2016 03:45:09 UTC -       creation_time   : 2005-10-17 22:54:33
    
29 Jan 2016 03:45:09 UTC -       handler_name    : Apple Video Media Handler
    
29 Jan 2016 03:45:09 UTC -       encoder         : 3ivx D4 4.5.1
    
29 Jan 2016 03:45:09 UTC -     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 32000 Hz, mono, fltp, 43 kb/s (default)
    
29 Jan 2016 03:45:09 UTC -     Metadata:
    
29 Jan 2016 03:45:09 UTC -       creation_time   : 2005-10-17 22:54:34
    
29 Jan 2016 03:45:09 UTC -       handler_name    : Apple Sound Media Handler
    
29 Jan 2016 03:45:09 UTC - [libx264 @ 0x30c2c00] using SAR=1/1
    
29 Jan 2016 03:45:09 UTC - [libx264 @ 0x30c2c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX AVX2 FMA3 BMI1 BMI2
    
29 Jan 2016 03:45:09 UTC - [libx264 @ 0x30c2c00] profile High, level 2.2
    
29 Jan 2016 03:45:09 UTC - [libx264 @ 0x30c2c00] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=1 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=10 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
    
29 Jan 2016 03:45:09 UTC - [mp4 @ 0x30c21a0] Tag mp42/0x3234706d incompatible with output codec id '28' ([33][0][0][0])
    
29 Jan 2016 03:45:09 UTC - Output #0, mp4, to '/var/local/ffmpegtest/media_output/sample_iTunes.mp4':
    
29 Jan 2016 03:45:09 UTC -   Metadata:
    
29 Jan 2016 03:45:09 UTC -     major_brand     : qt  
    
29 Jan 2016 03:45:09 UTC -     minor_version   : 537199360
    
29 Jan 2016 03:45:09 UTC -     compatible_brands: qt  
    
29 Jan 2016 03:45:09 UTC -     Stream #0:0(eng): Video: h264 (libx264) (mp42 / 0x3234706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 10 fps, 90k tbn, 10 tbc (default)
    
29 Jan 2016 03:45:09 UTC -     Metadata:
    
29 Jan 2016 03:45:09 UTC -       creation_time   : 2005-10-17 22:54:33
    
29 Jan 2016 03:45:09 UTC -       handler_name    : Apple Video Media Handler
    
29 Jan 2016 03:45:09 UTC -       encoder         : Lavc55.66.101 libx264
    
29 Jan 2016 03:45:09 UTC -     Stream #0:1(eng): Audio: aac (libvo_aacenc), 32000 Hz, mono, s16, 128 kb/s (default)
    
29 Jan 2016 03:45:09 UTC -     Metadata:
    
29 Jan 2016 03:45:09 UTC -       creation_time   : 2005-10-17 22:54:34
    
29 Jan 2016 03:45:09 UTC -       handler_name    : Apple Sound Media Handler
    
29 Jan 2016 03:45:09 UTC -       encoder         : Lavc55.66.101 libvo_aacenc
    
29 Jan 2016 03:45:09 UTC - Stream mapping:
    
29 Jan 2016 03:45:09 UTC -   Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
    
29 Jan 2016 03:45:09 UTC -   Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
    
29 Jan 2016 03:45:09 UTC - Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input

  • ffmpeg.c use b:v for video bitrates using a target

    29 novembre 2011, par Jean First

    ffmpeg.c use b:v for video bitrates using a target

  • Free video file converter for c#

    29 novembre 2011, par Richard77

    I'm looking for a library in C#(not commandline) that converts video files' from one format to another.

    While googling, I've seen that many people have asked this question before. Unfortunately those questions were asked years in the past. The most recent of them was aked in april of 2010.

    I've read a lot about FFMPEG, but I don't see any tutorial on how to use that library in C#.

    Please, help with sample codes if possible.

    Thanks for helping

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