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Recording RTP VP8 packets with FFMPEG with named pipe

6 août 2015, par Filipe Apolinário

I’m developing a WebRTC video session recorder, in a gateway developed in C++, where I only have access to individual RTP packets.

When a session starts, I create two threads one that initializes a named pipe and an other that starts FFMPEG to fetch data from that pipe and store it in a matroska file, with the command :

ffmpeg -i \\.\pipe\screenRec -f matroska D:\djhfifj.mkv

Whenever I receive an RTP packet I send it through the pipe to FFMPEG. Although all communication is working fine, FFMPEG does not seem to be recognizing the RTP packet :

ffmpeg version N-73633-gdfc5858 Copyright (c) 2000-2015 the FFmpeg developers

  built with gcc 4.9.2 (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-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --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-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib

  libavutil      54. 28.100 / 54. 28.100

  libavcodec     56. 47.100 / 56. 47.100

  libavformat    56. 40.100 / 56. 40.100

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 21.100 /  5. 21.100

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  2.100 /  1.  2.100

  libpostproc    53.  3.100 / 53.  3.100

[aac @ 031b3fc0] Format aac detected only with low score of 1, misdetection possible!

[aac @ 031bd820] More than one AAC RDB per ADTS frame is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.

[aac @ 031bd820] channel element 3.13 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (26) exceeds limit (9).

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (60) exceeds limit (44).

[aac @ 031bd820] Number of bands (6) exceeds limit (4).

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (30) exceeds limit (23).

[aac @ 031bd820] Sample rate index in program config element does not match the sample rate index configured by the container.

[aac @ 031bd820] Inconsistent channel configuration.

[aac @ 031bd820] get_buffer() failed

[aac @ 031bd820] Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide) layout, use -strict 1 to decode according to the specification instead.

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (16) exceeds limit (11).

[aac @ 031bd820] Dependent coupling is not supported together with LTP

    Last message repeated 9 times

[aac @ 031bd820] channel element 3.5 is not allocated

[aac @ 031bd820] channel element 3.13 is not allocated

[aac @ 031bd820] channel element 3.3 is not allocated

[aac @ 031bd820] Number of bands (16) exceeds limit (14).

[aac @ 031bd820] channel element 3.10 is not allocated

[aac @ 031bd820] channel element 3.2 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of scalefactor bands in group (61) exceeds limit (43).

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (29) exceeds limit (13).

[aac @ 031bd820] Sample rate index in program config element does not match the sample rate index configured by the container.

[aac @ 031bd820] Inconsistent channel configuration.

[aac @ 031bd820] get_buffer() failed

[aac @ 031bd820] channel element 0.7 is not allocated

[aac @ 031bd820] Number of bands (24) exceeds limit (15).

[aac @ 031bd820] channel element 1.1 is not allocated

[aac @ 031bd820] channel element 2.0 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of scalefactor bands in group (62) exceeds limit (41).

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (15) exceeds limit (13).

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (23) exceeds limit (2).

[aac @ 031bd820] channel element 1.4 is not allocated

[aac @ 031bd820] Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide) layout, use -strict 1 to decode according to the specification instead.

[aac @ 031bd820] channel element 1.2 is not allocated

[aac @ 031bd820] channel element 1.8 is not allocated

[aac @ 031bd820] channel element 3.7 is not allocated

[aac @ 031bd820] channel element 2.9 is not allocated

[aac @ 031bd820] channel element 3.8 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of scalefactor bands in group (48) exceeds limit (43).

[aac @ 031bd820] channel element 3.8 is not allocated

[aac @ 031bd820] channel element 2.13 is not allocated

[aac @ 031bd820] channel element 3.4 is not allocated

[aac @ 031bd820] Dependent coupling is not supported together with LTP

    Last message repeated 13 times

[aac @ 031bd820] channel element 2.14 is not allocated

[aac @ 031bd820] SBR was found before the first channel element.

[aac @ 031bd820] Sample rate index in program config element does not match the sample rate index configured by the container.

[aac @ 031bd820] Inconsistent channel configuration.

[aac @ 031bd820] get_buffer() failed

[aac @ 031bd820] Number of bands (6) exceeds limit (5).

[aac @ 031bd820] channel element 3.0 is not allocated

[aac @ 031bd820] channel element 1.5 is not allocated

[aac @ 031bd820] channel element 1.13 is not allocated

[aac @ 031bd820] channel element 1.7 is not allocated

[aac @ 031bd820] channel element 2.0 is not allocated

[aac @ 031bd820] Dependent coupling is not supported together with LTP

    Last message repeated 13 times

[aac @ 031bd820] channel element 3.0 is not allocated

[aac @ 031bd820] Assuming an incorrectly encoded 7.1 channel layout instead of a spec-compliant 7.1(wide) layout, use -strict 1 to decode according to the specification instead.

[aac @ 031bd820] SBR was found before the first channel element.

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (31) exceeds limit (30).

[aac @ 031bd820] channel element 1.12 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] Number of bands (29) exceeds limit (10).

[aac @ 031bd820] channel element 3.2 is not allocated

[aac @ 031bd820] channel element 3.15 is not allocated

[aac @ 031bd820] channel element 1.5 is not allocated

[aac @ 031bd820] channel element 2.7 is not allocated

[aac @ 031bd820] channel element 1.9 is not allocated

[aac @ 031bd820] Number of bands (54) exceeds limit (34).

[aac @ 031bd820] channel element 1.6 is not allocated

[aac @ 031bd820] channel element 1.2 is not allocated

[aac @ 031bd820] channel element 3.7 is not allocated

[aac @ 031bd820] Reserved bit set.

[aac @ 031bd820] ms_present = 3 is reserved.

[aac @ 031b3fc0] decoding for stream 0 failed

[aac @ 031b3fc0] Could not find codec parameters for stream 0 (Audio: aac (LTP), 4.0, fltp, 1506 kb/s): unspecified sample rate

Consider increasing the value for the 'analyzeduration' and 'probesize' options

\\.\pipe\screenRec96: could not find codec parameters

Input #0, aac, from '\\.\pipe\screenRec96':

  Duration: N/A, bitrate: 1506 kb/s

    Stream #0:0: Audio: aac (LTP), 4.0, fltp, 1506 kb/s

[abuffer @ 0435cd00] Value inf for parameter 'time_base' out of range [0 - 2.14748e+009]

    Last message repeated 3 times

[abuffer @ 0435cd00] Error setting option time_base to value 1/0.

[graph 0 input from stream 0:0 @ 0319afe0] Error applying options to the filter.

Error opening filters!

Is it possible to make FFMPEG understand that the packet sent is RTP with VP8 ?

Compress video FFMPEG doesn't work

30 juillet 2015, par Douglas Anunciação

I’m trying to compress video using FFMPEG and this library : https://github.com/guardianproject/android-ffmpeg-java

I imported ffmpeglib as a module in my project. This is the code is use to compress :

public class MainActivity extends Activity {



    private ArrayList&lt;Object&gt; listVideoPaths = new ArrayList&lt;&gt;();<br />

<br />

    @Override<br />

    protected void onCreate(Bundle savedInstanceState) {<br />

        super.onCreate(savedInstanceState);<br />

        setContentView(R.layout.activity_main);<br />

<br />

        getGalleryVideos();<br />

<br />

        File videoFolderFile = new File(&quot;/storage/emulated/0/DCIM/Camera/&quot;);<br />

<br />

        if(videoFolderFile.exists())<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video folder exist&quot;);<br />

        else<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video folder DON'T exist&quot;);<br />

<br />

<br />

        File videoInputFile = new File(listVideoPaths.get(0).toString());<br />

<br />

        if(videoInputFile.exists())<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video input file exist&quot;);<br />

        else<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video input file DON'T exist&quot;);<br />

<br />

        File videoOutputFile = new File(videoFolderFile,&quot;output.mp4&quot;);<br />

<br />

        if(videoOutputFile.exists())<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video output file exist&quot;);<br />

        else<br />

            Log.e(&quot;TEST FFMPEG&quot;, &quot;video output file DON'T exist&quot;);<br />

<br />

        FfmpegController ffmpegController;<br />

<br />

        try {<br />

            ffmpegController = new FfmpegController(this,videoFolderFile);<br />

<br />

            Clip mediaIn = new Clip();<br />

<br />

            mediaIn.path = videoInputFile.getAbsolutePath();<br />

<br />

            mediaIn.videoFps =  &quot;25&quot;;<br />

<br />

            ffmpegController.convertToMPEG(mediaIn, videoOutputFile.getAbsolutePath(), new ShellUtils.ShellCallback() {<br />

<br />

                @Override<br />

                public void shellOut(String shellLine) {<br />

                    Log.e(&quot;TEST FFMPEG&quot;, &quot;shellOut - &quot; + shellLine);<br />

                }<br />

<br />

                @Override<br />

                public void processComplete(int exitValue) {<br />

                    Log.e(&quot;TEST FFMPEG&quot;, &quot;proccess complete - &quot; + exitValue);<br />

                }<br />

            });<br />

<br />

<br />

        } catch (IOException e) {<br />

            e.printStackTrace();<br />

        } catch (Exception e) {<br />

            e.printStackTrace();<br />

        }finally {<br />

<br />

            if(videoOutputFile.exists())<br />

                Log.e(&quot;TEST FFMPEG&quot;, &quot;finished ffmpeg ---&gt; video output file exist&quot;);<br />

            else<br />

                Log.e(&quot;TEST FFMPEG&quot;, &quot;finished ffmpeg ---&gt; video output file DON'T exist&quot;);<br />

<br />

        }<br />

    }<br />

<br />

    private void getGalleryVideos(){<br />

<br />

        Cursor videoCursor = null;<br />

<br />

        try {<br />

<br />

            final String[] columns = { Media.DATA,<br />

                    Media._ID,<br />

                    Media.DATE_ADDED };<br />

<br />

            final String orderBy = Media.DATE_ADDED;<br />

<br />

            videoCursor = getContentResolver().query(<br />

                    MediaStore.Video.Media.EXTERNAL_CONTENT_URI, columns,<br />

                    null, null, orderBy);<br />

<br />

            if (videoCursor != null &amp;amp;&amp;amp; videoCursor.getCount() &gt; 0) {<br />

<br />

                while (videoCursor.moveToNext()) {<br />

<br />

                    int dataColumnIndex = videoCursor<br />

                            .getColumnIndex(Media.DATA);<br />

<br />

                    listVideoPaths.add(videoCursor<br />

                            .getString(dataColumnIndex));<br />

<br />

                }<br />

<br />

            }<br />

<br />

            Collections.sort(listVideoPaths,new Comparator());<br />

<br />

        } catch (Exception e) {<br />

<br />

            e.printStackTrace();<br />

<br />

        } finally {<br />

<br />

            if (videoCursor != null) {<br />

<br />

                if (!videoCursor.isClosed()) {<br />

<br />

                    videoCursor.close();<br />

<br />

                }<br />

<br />

            }<br />

<br />

        }<br />

<br />

    }<br />

<br />

}<br />

&lt;/code&gt;&lt;/pre&gt;<br />

<br />

&lt;p&gt;I get no error but the video doesn't play. The log file is:&lt;/p&gt;<br />

<br />

&lt;blockquote&gt;<br />

  &lt;p&gt;3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  video folder exist 07-30 14:31:57.389&lt;br&gt;<br />

  3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  video input file exist 07-30 14:31:57.389&lt;br&gt;<br />

  3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  video output file DON'T exist 07-30 14:31:58.363&lt;br&gt;<br />

  3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -<br />

  /data/data/douglasanunciacao.androidffmpegjavateste/app_bin/ffmpeg -y<br />

  -i /storage/emulated/0/DCIM/Camera/VID_20150730_142330563.mp4 -f mpeg /storage/emulated/0/DCIM/Camera/output.mp4 07-30 14:31:58.385&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - WARNING: linker:<br />

  /data/data/douglasanunciacao.androidffmpegjavateste/app_bin/ffmpeg has<br />

  text relocations. This is wasting memory and prevents security<br />

  hardening. Please fix. 07-30 14:31:58.390&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg<br />

  developers 07-30 14:31:58.391&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   built on Dec 22 2014 12:52:34 with gcc 4.6 20120106<br />

  (prerelease) 07-30 14:31:58.391&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   configuration: --arch=arm --cpu=cortex-a8<br />

  --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-<br />

  --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib 07-30 14:31:58.391&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libavutil      51. 54.100 / 51. 54.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libavcodec     54. 23.100 / 54. 23.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libavformat    54.  6.100 / 54.  6.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libavdevice    54.  0.100 / 54.  0.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libavfilter     2. 77.100 /  2. 77.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libswscale      2.  1.100 /  2.  1.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libswresample   0. 15.100 /  0. 15.100 07-30 14:31:58.391<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   libpostproc    52.  0.100 / 52.  0.100 07-30 14:31:58.868<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - Input #0, mov,mp4,m4a,3gp,3g2,mj2, from<br />

  '/storage/emulated/0/DCIM/Camera/VID_20150730_142330563.mp4': 07-30<br />

  14:31:58.869    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -   Metadata: 07-30 14:31:58.869&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     major_brand     : mp42 07-30 14:31:58.870&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     minor_version   : 0 07-30 14:31:58.871&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     compatible_brands: isommp42 07-30 14:31:58.872&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.873    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -   Duration: 00:00:01.89, start: 0.000000,<br />

  bitrate: 17571 kb/s 07-30 14:31:58.874&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     Stream #0:0(eng): Video: h264 (High) (avc1 /<br />

  0x31637661), yuv420p, 1920x1080, 15874 kb/s, SAR 65536:65536 DAR 16:9,<br />

  23.90 fps, 23.92 tbr, 90k tbn, 180k tbc 07-30 14:31:58.875    3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     Metadata: 07-30 14:31:58.876&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       rotate          : 270 07-30 14:31:58.877&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.878    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -       handler_name    : VideoHandle 07-30<br />

  14:31:58.878    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -     Stream #0:1(eng): Audio: aac (mp4a /<br />

  0x6134706D), 48000 Hz, stereo, s16, 127 kb/s 07-30 14:31:58.878&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     Metadata: 07-30 14:31:58.878&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.878    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -       handler_name    : SoundHandle 07-30<br />

  14:31:58.882    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut - [buffer @ 0xb5cce0a0] w:1920 h:1080<br />

  pixfmt:yuv420p tb:1/90000 sar:65536/65536 sws_param:flags=2 07-30<br />

  14:31:58.882    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut - [buffersink @ 0xb5cce0d0] No opaque field<br />

  provided 07-30 14:31:58.891&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - [mpeg @ 0xb5c3df00] VBV buffer size not set, muxing may<br />

  fail 07-30 14:31:58.892&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - Output #0, mpeg, to<br />

  '/storage/emulated/0/DCIM/Camera/output.mp4': 07-30 14:31:58.894&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   Metadata: 07-30 14:31:58.895&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     major_brand     : mp42 07-30 14:31:58.896&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     minor_version   : 0 07-30 14:31:58.896&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     compatible_brands: isommp42 07-30 14:31:58.897&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.898    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -     encoder         : Lavf54.6.100 07-30<br />

  14:31:58.898    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -     Stream #0:0(eng): Video: mpeg1video,<br />

  yuv420p, 1920x1080 [SAR 65536:65536 DAR 16:9], q=2-31, 200 kb/s, 90k<br />

  tbn, 23.98 tbc 07-30 14:31:58.899&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     Metadata: 07-30 14:31:58.899&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       rotate          : 270 07-30 14:31:58.900&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.901    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -       handler_name    : VideoHandle 07-30<br />

  14:31:58.906    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -     Stream #0:1(eng): Audio: mp2, 48000 Hz,<br />

  stereo, s16, 128 kb/s 07-30 14:31:58.906&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -     Metadata: 07-30 14:31:58.906&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -       creation_time   : 2015-07-30 17:23:34 07-30<br />

  14:31:58.906    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -       handler_name    : SoundHandle 07-30<br />

  14:31:58.906    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut - Stream mapping: 07-30 14:31:58.906&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut -   Stream #0:0 -&gt; #0:0 (h264 -&gt; mpeg1video) 07-30<br />

  14:31:58.906    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut -   Stream #0:1 -&gt; #0:1 (aac -&gt; mp2) 07-30<br />

  14:31:58.906    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut - Press [q] to stop, [?] for help 07-30<br />

  14:31:59.824    3096-3182/douglasanunciacao.androidffmpegjavateste<br />

  E/TESTE FFMPEG﹕ shellOut - frame=    4 fps=0.0 q=2.0 size=       0kB<br />

  time=00:00:00.08 bitrate=   0.0kbits/s 07-30 14:32:02.029&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=    8 fps=2.7 q=10.5 size=       4kB time=00:00:00.25<br />

  bitrate= 130.9kbits/s 07-30 14:32:02.536&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   13 fps=3.7 q=25.2 size=     696kB time=00:00:00.45<br />

  bitrate=12427.3kbits/s 07-30 14:32:03.045&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   18 fps=4.4 q=31.0 size=     750kB time=00:00:00.66<br />

  bitrate=9206.8kbits/s 07-30 14:32:03.582&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   23 fps=5.0 q=31.0 size=     786kB time=00:00:00.87<br />

  bitrate=7351.4kbits/s 07-30 14:32:04.140&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   28 fps=5.5 q=31.0 size=     862kB time=00:00:01.08<br />

  bitrate=6511.8kbits/s 07-30 14:32:05.239&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   30 fps=4.8 q=31.0 size=     876kB time=00:00:01.16<br />

  bitrate=6144.9kbits/s 07-30 14:32:05.746&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   35 fps=5.2 q=31.0 size=     910kB time=00:00:01.37<br />

  bitrate=5416.2kbits/s 07-30 14:32:06.317&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   41 fps=5.6 q=31.0 size=     972kB time=00:00:01.62<br />

  bitrate=4895.2kbits/s 07-30 14:32:06.832&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - frame=   45 fps=5.7 q=31.0 Lsize=    1022kB<br />

  time=00:00:01.83 bitrate=4562.1kbits/s 07-30 14:32:06.832&lt;br&gt;<br />

  3096-3182/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  shellOut - video:984kB audio:30kB global headers:0kB muxing overhead<br />

  0.756932% 07-30 14:32:06.858    3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  proccess complete - 0 07-30 14:32:06.858&lt;br&gt;<br />

  3096-3096/douglasanunciacao.androidffmpegjavateste E/TESTE FFMPEG﹕<br />

  terminou o ffmpeg ---&gt; video output file exist&lt;/p&gt;<br />

&lt;/blockquote&gt;<br />

<br />

&lt;p&gt;Does anyone knows how to solve this problem? Thanks in advance.&lt;/p&gt;

ffmpeg ffserver - create a mosaic from two 720p webcam feeds

28 juillet 2015, par der_felix

for a project i would like to take the video feeds (NO audio) of two logitech c920 webcams, put them side-by-side and stream them.
the c920 is able to compress the video feed with h264 itself(if enabled) and delivers 1080p with upto 30fps.
the stream is then loaded in an android app by a ffmpeg library and rendered to the screen.

what i already know :
i know that i can take multiple streams or input files and create a mosaic stream via the filter_complex module.
http and h264 seem to be good for streaming, but other configurations are also welcom if they are faster/better.

the question :
but how can i start the cameras with v4l2, set the camera resoltution and camera internal encoding and use these streams to create the mosaic ?
the mosaic should be unscaled (=2560x720px).

and i very often get the error code 256 but didnt find a solution what it means.

the system : laptop with usb3, ubuntu 15.04x64 ffmpeg 2.7.1 and ffserver 2.5.7

thanks for your help

ffserver config :

HTTPPort 8080                

HTTPBindAddress 0.0.0.0      

MaxHTTPConnections 2000   

MaxClients 1000         

MaxBandwidth 50000

CustomLog -      

#NoDaemon       



<feed>         



File /tmp/feed1.ffm

Launch ffmpeg -f v4l2 - input_format h264 -i /dev/video0 -i /dev/video1 -size 1280x720 -r 30 -filter_complex "nullsrc=size=2560x720 [base]; [0:v] setpts=PTS-STARTPTS [left]; [1:v] setpts=PTS-STARTPTS [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=1280"  -c:v libx264 -f mpegts



</feed>



<stream>



Feed feed1.ffm

Format mpegts      

VideoBitRate 1024   

#VideoBufferSize 1024

VideoFrameRate 30      

#VideoSize hd720      

VideoSize 2560x720

#VideoIntraOnly         

#VideoGopSize 12      

VideoCodec libx264      

NoAudio            

VideoQMin 3         

VideoQMax 31

NoDefaults



</stream>



<stream>        

   Format status

   #Only allow local people to get the status

   ACL allow localhost

   ACL allow 192.168.0.0 192.168.255.255

</stream>

output :

ubuntu@ubuntu:~$ ffserver

ffserver version 2.5.7-0ubuntu0.15.04.1 Copyright (c) 2000-2015 the FFmpeg developers

  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)

  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265

  libavutil      54. 15.100 / 54. 15.100

  libavcodec     56. 13.100 / 56. 13.100

  libavformat    56. 15.102 / 56. 15.102

  libavdevice    56.  3.100 / 56.  3.100

  libavfilter     5.  2.103 /  5.  2.103

  libavresample   2.  1.  0 /  2.  1.  0

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

Tue Jul 28 10:13:44 2015 FFserver started.

Tue Jul 28 10:13:44 2015 Launch command line: ffmpeg -f v4l2 - input_format h264 -i /dev/video0 -i /dev/video1 -size 1280x720 -r 30 -filter_complex nullsrc=size=2560x720 [base]; [0:v] setpts=PTS-STARTPTS [left]; [1:v] setpts=PTS-STARTPTS [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=1280 -c:v libx264 -f mpegts http://127.0.0.1:8080/feed1.ffm

feed1.ffm: Pid 17388 exited with status 256 after 0 seconds

Hey guys !

Here is our plan b for the mosaic stream.

Alternative config :

HTTPPort 8080         

HTTPBindAddress 0.0.0.0   

MaxHTTPConnections 2000   

MaxClients 1000         

MaxBandwidth 50000      

CustomLog -         



<feed>

File /tmp/feedlinks.ffm

Launch ffmpeg -f v4l2 -input_format h264 -vcodec h264 -i /dev/video0 -video_size 1280x720 -r 30

</feed>



<feed>

File /tmp/feedrechts.ffm

Launch ffmpeg -f v4l2 -input_format h264 -vcodec h264 -i /dev/video1 -video_size 1280x720 -r 30 

</feed>



<stream>

Feed feedlinks.ffm

Format mpegts

VideoBitRate 512

VideoFrameRate 30

VideoSize hd720

VideoCodec libx264

NoAudio

VideoQMin 3

VideoQMax 31

</stream>



<stream>

Feed feedrechts.ffm

Format mpegts

VideoBitRate 512

VideoFrameRate 30

VideoSize hd720

VideoCodec libx264

NoAudio

VideoQMin 3

VideoQMax 31

</stream>



<feed>

File /tmp/feedmosaic.ffm

Launch ffmpeg -i http://localhost:8080/testlinks.mpg -i http://localhost:8080/testrechts.mpg -filter_complex "nullsrc=size=2560x720 [base]; [0:v] setpts=PTS-STARTPTS [left]; [1:v] setpts=PTS-STARTPTS [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=1280" -c:v libx264 -preset ultrafast -f mpegts

</feed>



<stream>

Feed feedmosaic.ffm

Format mpegts         # Format of the stream

VideoFrameRate 30      # Number of frames per second

VideoSize 2560x720

VideoCodec libx264      # Choose your codecs.

NoAudio            # Suppress audio

VideoQMin 3         # Videoquality ranges from 1 - 31 (worst to best)

VideoQMax 31

NoDefaults

</stream>



<stream>           # Server status URL

   Format status

   # Only allow local people to get the status

   ACL allow localhost

   ACL allow 192.168.0.0 192.168.255.255

   ACL allow 192.168.178.0 192.168.255.255

</stream>

And this is the new output :

ubuntu@ubuntu:~$ ffserver

ffserver version 2.5.7-0ubuntu0.15.04.1 Copyright (c) 2000-2015 the FFmpeg developers

  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)

  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265

  libavutil      54. 15.100 / 54. 15.100

  libavcodec     56. 13.100 / 56. 13.100

  libavformat    56. 15.102 / 56. 15.102

  libavdevice    56.  3.100 / 56.  3.100

  libavfilter     5.  2.103 /  5.  2.103

  libavresample   2.  1.  0 /  2.  1.  0

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

/etc/ffserver.conf:44: Setting default value for video bit rate tolerance = 128000. Use NoDefaults to disable it.

/etc/ffserver.conf:44: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.

/etc/ffserver.conf:44: Setting default value for video max rate = 1024000. Use NoDefaults to disable it.

/etc/ffserver.conf:44: Setting default value for video buffer size = 1024000. Use NoDefaults to disable it.

/etc/ffserver.conf:61: Setting default value for video bit rate tolerance = 128000. Use NoDefaults to disable it.

/etc/ffserver.conf:61: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.

/etc/ffserver.conf:61: Setting default value for video max rate = 1024000. Use NoDefaults to disable it.

/etc/ffserver.conf:61: Setting default value for video buffer size = 1024000. Use NoDefaults to disable it.

Tue Jul 28 11:13:01 2015 Codec bitrates do not match for stream 0

Tue Jul 28 11:13:01 2015 FFserver started.

Tue Jul 28 11:13:01 2015 Launch command line: ffmpeg -f v4l2 -input_format h264 -vcodec h264 -i /dev/video0 -video_size 1280x720 -r 30 http://127.0.0.1:8080/feedlinks.ffm

Tue Jul 28 11:13:01 2015 Launch command line: ffmpeg -f v4l2 -input_format h264 -vcodec h264 -i /dev/video1 -video_size 1280x720 -r 30 http://127.0.0.1:8080/feedrechts.ffm

Tue Jul 28 11:13:01 2015 Launch command line: ffmpeg -i http://localhost:8080/testlinks.mpg -i http://localhost:8080/testrechts.mpg -filter_complex nullsrc=size=2560x720 [base]; [0:v] setpts=PTS-STARTPTS [left]; [1:v] setpts=PTS-STARTPTS [right]; [base][left] overlay=shortest=1 [tmp1]; [tmp1][right] overlay=shortest=1:x=1280 -c:v libx264 -preset ultrafast -f mpegts http://127.0.0.1:8080/feedmosaic.ffm

Tue Jul 28 11:13:02 2015 127.0.0.1 - - [GET] "/feedlinks.ffm HTTP/1.1" 200 4175

Tue Jul 28 11:13:02 2015 127.0.0.1 - - [GET] "/feedrechts.ffm HTTP/1.1" 200 4175

Tue Jul 28 11:13:18 2015 127.0.0.1 - - [POST] "/feedmosaic.ffm HTTP/1.1" 200 4096

Tue Jul 28 11:13:18 2015 127.0.0.1 - - [GET] "/testlinks.mpg HTTP/1.1" 200 2130291

Tue Jul 28 11:13:18 2015 127.0.0.1 - - [GET] "/testrechts.mpg HTTP/1.1" 200 1244999

feedmosaic.ffm: Pid 18775 exited with status 256 after 17 seconds

Thanks for your help !

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