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  • ffmpeg joinnig videos in php linux

    28 octobre 2013, par user2226181

    I am trying to add joining videos with no audio in ffmpeg php using linux operating system. My code is this:

    cat output_1.mp4 output_2.mp4 output_3.mp4 output_4.mp4 > final.mp4

    It is giving me an output of final.mp4 in result but there is a problem in the final.mp4 there is only first video which is output_1.mp4 in final video, the other videos are not being concatenate. Please help me in this case.

    Thanks

  • ffmpeg after converting avi to mp4 need wait till video loads in flash player 100% otherwise video is buffering

    28 octobre 2013, par Xenos Trojanowicz

    So if fixed all issues with my ffmpeg journey now I just need that after converting videos they play in flash player instantly and no need to wait till video loeaded 100% I use:

    if ($success_msg) {
    $tmp_parts = explode('.', $file['name']);
    $ext = array_pop($tmp_parts);
    $ext = strtolower($ext);
    if($ext == "avi" && $convert_avi == true) {
        $convert_source = _VIDEOS_DIR_PATH.$new_name;
        $conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4";
        $converted_file  = _VIDEOS_DIR_PATH.$conv_name;
        $ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libfaac -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file;
        echo exec($ffmpeg_command);
        $sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1";
        $result = @mysql_query($sql);
        unlink($convert_source);
    }
    echo $success_msg;
}

    To convert videos

    EDIT #1 ffmpeg concole output with faststart function:

    root@1tb:~# ffmpeg -i sample.avi -movflags faststart -acodec libfaac -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 consample.mp4
ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb 22 2013 07:18:58 with gcc 4.4.5
  configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-libvpx --enable-librtmp --extra-libs=-lgcrypt --disable-altivec --disable-armv5te --disable-armv6 --disable-vis
  libavutil    50. 43. 0 / 50. 43. 0
  libavcodec   52.123. 0 / 52.123. 0
  libavformat  52.111. 0 / 52.111. 0
  libavdevice  52.  5. 0 / 52.  5. 0
  libavfilter   1. 80. 0 /  1. 80. 0
  libswscale    0. 14. 1 /  0. 14. 1
  libpostproc  51.  2. 0 / 51.  2. 0
[mp3 @ 0x15389100] Header missing
[mpeg4 @ 0x15386dc0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'sample.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.10.2 (build 2540/release)
  Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr, 23.98 tbn, 23.98 tbc
    Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
[MOV/3GP/MP4/3G2 muxer @ 0x15386c80] [Eval @ 0x7ffffec71230] Undefined constant or missing '(' in 'faststart'
[MOV/3GP/MP4/3G2 muxer @ 0x15386c80] Unable to parse option value "faststart"
Invalid value 'movflags' for option 'faststart'

  • run ffmpeg commands from my own project

    28 octobre 2013, par bruno

    I'm starting a project where I want ppl to upload videos of a talk and a the video of slides for that talk and want to merge them (to play at the same time) and then show results.

    My question is: Is it possible to do that from code? if it is, can you point me to the right doc? I was able to do it running command line, but as I want this to run on a server with different ppl uploading their videos I think this would not be the best approach. I have a preference for Java if it's possible to do it, but I can manage to use other languages what do you guys suggest?

    The idea would be to have a service where I can point the urls of the videos stored in my server and it would merge them and save file where I can later stream. With different ppl uploading videos at the same time and being able to watch the result in a reasonable amount of time.

    I used this tutorial to test: https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20input%20videos

    Thanks for your time

  • how to pass arguments to existing process instance in c#

    28 octobre 2013, par Akash Langhani

    I am using ffmpeg and I have start a process and I want to pass an argument to same instance after its start, so how to do this in c sharp any resource. Basically I am using ffmpeg to recored desktop screen and ffmpeg recording can be stop with "q" word.

  • How to convert .flv video into .h264 format with FFmpeg ?

    28 octobre 2013, par Shishir Mudliyar

    I want to convert from .flv to .h264 format.

    Problem: I did a conversion from FLV to H264 format but my converted video (.h264) is running so fast (just like we'd click on a fast forward button).

    I used the following command:

    ffmpeg -i example.flv -sameq -vcodec libx264 -vpre default -ar 22050 output.h264

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