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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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ffmpeg command execution never stops
19 août 2020, par Khawar RazaI am trying to concatenate 3 videos of different resolutions and overlaying 2 videos as transition effects(though the chroma key color removal is not yet implemented) between videos using below command :


ffmpeg 
-i input1.mp4 
-i input2.mp4 
-i input3.mp4 
-i transition1.mp4 
-i transition2.mp4 
-filter_complex 
"[0:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video0];
[1:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video1];
[2:v]pad=width=1080:height=1920:x=(1080-iw)*0.5:y=(1920-ih)*0.5:color=black[video2];
[video0][video1][video2]concat=n=3:v=1:a=0[outv];
[3:v]scale=w=1080:h=1920[t0];
[4:v]scale=w=1080:h=1920[t1];
[outv][t0]overlay=enable='between(t,6.6045,9.6335)'[out0];
[out0][t1]overlay=enable='between(t,12.5655,15.6165)'[out1];
[0:a][1:a][2:a]concat=n=3:v=0:a=1[audio]" 
-c:v libx264 -pix_fmt yuv420p -map [out1] -map [audio] -preset ultrafast output.mp4


I get success only with few videos. Most of the times the command execution never stops. It keeps on appending something to the output video file even for hours. Here is the output from console :


ffmpeg version v4.4-dev-416
 Copyright (c) 2000-2020 the FFmpeg developers
 built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
 configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libx264 --enable-gpl --enable-libxvid --enable-gpl --enable-libx265 --enable-gpl --enable-libvidstab --enable-gpl --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
 libavutil 56. 55.100 / 56. 55.100
 libavcodec 58. 96.100 / 58. 96.100
 libavformat 58. 48.100 / 58. 48.100
 libavdevice 58. 11.101 / 58. 11.101
 libavfilter 7. 87.100 / 7. 87.100
 libswscale 5. 8.100 / 5. 8.100
 libswresample 3. 8.100 / 3. 8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input1.mp4':
 Metadata:
 major_brand : 
 mp42
 minor_version : 
 0
 compatible_brands: 
isommp42
 creation_time : 
 2020-08-12T17:21:49.000000Z
 com.android.version: 
 9
 Duration: 
 00:00:08.12
 , start: 
 0.000000
 , bitrate: 
 17298 kb/s
 Stream #0:0
 (eng)
 : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 16309 kb/s
 , SAR 1:1 DAR 16:9
 , 
 28.70 fps, 
 29.50 tbr, 
 90k tbn, 
 60 tbc
 (default)
 Metadata:
 rotate : 
 90
 creation_time : 

 handler_name : 
 VideoHandle
 Side data:
 
 displaymatrix: rotation of -90.00 degrees
 Stream #0:1
 (eng)
 : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s
 (default)
 Metadata:
 creation_time : 
 2020-08-12T17:21:49.000000Z
 handler_name : 
 SoundHandle
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input2.mp4':
 Metadata:
 major_brand : 
 isom
 minor_version : 
 512
 compatible_brands: 
 isomiso2avc1mp41
 encoder : 
 Lavf57.25.100
 Duration: 
 00:00:05.97
 , start: 
 0.000000
 , bitrate: 
 770 kb/s
 Stream #1:0
 (und)
 : Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 128 kb/s
 (default)
 Metadata:
 handler_name : 
 SoundHandler
 Stream #1:1
 (und)
 : Video: h264 (avc1 / 0x31637661), yuv420p, 368x480, 608 kb/s
 , 
 27.29 fps, 
120 tbr, 
 12k tbn, 
 60 tbc
 (default)
 Metadata:
 handler_name : 
 VideoHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'input3.mp4':
 Metadata:
 major_brand : 
 isom
 minor_version : 
 512
 compatible_brands: 
 isomiso2avc1mp41
 encoder : 
 Lavf55.19.104
 Duration: 
 00:00:13.05
 , start: 
 0.000000
 , bitrate: 
 2453 kb/s
 Chapter #2:0: 
 start 0.000000, 
 end 13.033000
 Metadata:
 title : 
 Stream #2:0
 (und)
 : Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
 (default)
 Metadata:
 handler_name : 
 SoundHandler
 Stream #2:1
 (und)
: Video: h264 (avc1 / 0x31637661), yuv420p, 640x480, 2320 kb/s
 , 
 25 fps, 
 25 tbr, 
 1200k tbn, 
 50 tbc
 (default)
 Metadata:
 handler_name : 
 VideoHandler
 Stream #2:2
 (eng)
 : Data: bin_data (text / 0x74786574), 0 kb/s
 Metadata:
 handler_name : 
 SubtitleHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'transition1.mp4':
 Metadata:
 major_brand : 
 mp42
 minor_version : 
 0
 compatible_brands: 
 mp41isom
 creation_time : 
 2020-08-17T09:31:23.000000Z
 Duration: 
 00:00:03.03
 , start: 
 0.000000
 , bitrate: 
 6263 kb/s
 Stream #3:0
 (und)
 : Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 6307 kb/s
 , 
 30 fps, 
 30 tbr, 
 30k tbn, 
 60 tbc
 (default)
 Metadata:
 creation_time : 

 handler_name : 
 VideoHandler
 encoder : 
 AVC Coding
 Stream #3:1
 (und)
 : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 79 kb/s
 (default)
 Metadata:
 creation_time : 
 2020-08-17T09:31:23.000000Z
 handler_name : 
SoundHandler
Input #4, mov,mp4,m4a,3gp,3g2,mj2, from 'transition2.mp4':
 Metadata:
 major_brand : 
 mp42
 minor_version : 0
 compatible_brands: 
 mp41isom
 creation_time : 
 2020-08-17T09:30:33.000000Z
 Duration: 
 00:00:03.05
 , start: 
 0.000000
 , bitrate: 
 7828 kb/s
 Stream #4:0
 (und)
 : Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 7873 kb/s
 , 
 30 fps, 
30 tbr, 
 30k tbn, 
 60 tbc
 (default)
 Metadata:
 creation_time : 
 2020-08-17T09:30:33.000000Z
 handler_name : 
 VideoHandler
 encoder : 
 AVC Coding
 Stream #4:1
 (und)
 : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 79 kb/s
 (default)
 Metadata:
 creation_time : 
 2020-08-17T09:30:33.000000Z
 handler_name : 
 SoundHandler
Stream mapping:
 Stream #0:0 (h264) -> pad
 Stream #0:1 (aac) -> concat:in0:a0
Stream #1:0 (aac) -> concat:in1:a0
 Stream #1:1 (h264) -> pad
 Stream #2:0 (aac) -> concat:in2:a0
 Stream #2:1 (h264) -> pad
 Stream #3:0 (h264) -> scale
 Stream #4:0 (h264) -> scale
 overlay
 -> Stream #0:0 (libx264)
 concat
 -> Stream #0:1 (aac)
 Press [q] to stop, [?] for help

[graph 0 input from stream 0:0 @ 0x733a19a900] sws_param option is deprecated and ignored
 [graph 0 input from stream 1:1 @ 0x733a19aa80] sws_param option is deprecated and ignored
 [graph 0 input from stream 2:1 @ 0x733a19ab40] sws_param option is deprecated and ignored
 [graph 0 input from stream 3:0 @ 0x733a19ac00] sws_param option is deprecated and ignored
 [graph 0 input from stream 4:0 @ 0x733a19acc0] sws_param option is deprecated and ignored

[mp4 @ 0x733a679400] Frame rate very high for a muxer not efficiently supporting it.
 Please consider specifying a lower framerate, a different muxer or -vsync 2
[libx264 @ 0x733a1b0600] using SAR=1/1
[libx264 @ 0x733a1b0600] MB rate (8160000000) > level limit (16711680)
[libx264 @ 0x733a1b0600] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x733a1b0600] profile Constrained Baseline, level 6.2, 4:2:0, 8-bit
 [libx264 @ 0x733a1b0600] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to 'output.mp4':
 Metadata:
 major_brand : 
 mp42
minor_version : 
 0
 compatible_brands: 
 isommp42
 com.android.version: 
 9
 encoder : 
 Lavf58.48.100
 Chapter #0:0: 
 start 0.000000, 
 end 13.033000
 Metadata:
 title : 
 Stream #0:0
 : Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1080x1920 [SAR 1:1 DAR 9:16], q=-1--1
 , 
 1000k tbn, 
 1000k tbc
(default)
 Metadata:
 encoder : 
 Lavc58.96.100 libx264
 Side data:
 
 cpb: 
 bitrate max/min/avg: 0/0/0 buffer size: 0 
 vbv_delay: N/A
 Stream #0:1
 : Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
 (default)
 Metadata:
 encoder : 
 Lavc58.96.100 aac
E/Progress: Progress: 3.6918316
D/mobile-ffmpeg: Progress: frame: 1, time: 1002, Pct: 0.036918
frame= 1 fps=0.0 q=0.0 size= 0kB time=00:00:01.00 bitrate= 0.5kbits/s speed=1.79x 
More than 1000 frames duplicated


I even tried command without overlay and audio parts but result was same. I am working on Android app and using below ffmpeg wrapper library :


https://github.com/tanersener/mobile-ffmpeg


-
how to stream h.264 video with mp3 audio using libavcodec ?
29 août 2020, par dasgI read h.264 frames from webcamera and capture audio from microphone. I need to stream live video to ffserver. During debug I read video from ffserver using ffmpeg with following command :



ffmpeg -i http://127.0.0.1:12345/robot.avi -vcodec copy -acodec copy out.avi



My video in output file is slightly accelerated. If I add a audio stream it is accelerated several times. Sometimes there is no audio in the output file.



Here is my code for encoding audio :



#include "v_audio_encoder.h"

extern "C" {
#include <libavcodec></libavcodec>avcodec.h>
}
#include <cassert>

struct VAudioEncoder::Private
{
 AVCodec *m_codec;
 AVCodecContext *m_context;

 std::vector m_outBuffer;
};

VAudioEncoder::VAudioEncoder( int sampleRate, int bitRate )
{
 d = new Private( );
 d->m_codec = avcodec_find_encoder( CODEC_ID_MP3 );
 assert( d->m_codec );
 d->m_context = avcodec_alloc_context3( d->m_codec );

 // put sample parameters
 d->m_context->channels = 2;
 d->m_context->bit_rate = bitRate;
 d->m_context->sample_rate = sampleRate;
 d->m_context->sample_fmt = AV_SAMPLE_FMT_S16;
 strcpy( d->m_context->codec_name, "libmp3lame" );

 // open it
 int res = avcodec_open2( d->m_context, d->m_codec, 0 );
 assert( res >= 0 );

 d->m_outBuffer.resize( d->m_context->frame_size );
}

VAudioEncoder::~VAudioEncoder( )
{
 avcodec_close( d->m_context );
 av_free( d->m_context );
 delete d;
}

void VAudioEncoder::encode( const std::vector& samples, std::vector& outbuf )
{
 assert( (int)samples.size( ) == d->m_context->frame_size );

 int outSize = avcodec_encode_audio( d->m_context, d->m_outBuffer.data( ),
 d->m_outBuffer.size( ), reinterpret_cast<const>( samples.data( ) ) );
 if( outSize ) {
 outbuf.resize( outSize );
 memcpy( outbuf.data( ), d->m_outBuffer.data( ), outSize );
 }
 else
 outbuf.clear( );
}

int VAudioEncoder::getFrameSize( ) const
{
 return d->m_context->frame_size;
}
</const></cassert>


Here is my code for streaming video :



#include "v_out_video_stream.h"

extern "C" {
#include <libavformat></libavformat>avformat.h>
#include <libavutil></libavutil>opt.h>
#include <libavutil></libavutil>avstring.h>
#include <libavformat></libavformat>avio.h>
}

#include <stdexcept>
#include <cassert>

struct VStatticRegistrar
{
 VStatticRegistrar( )
 {
 av_register_all( );
 avformat_network_init( );
 }
};

VStatticRegistrar __registrar;

struct VOutVideoStream::Private
{
 AVFormatContext * m_context;
 int m_videoStreamIndex;
 int m_audioStreamIndex;

 int m_videoBitrate;
 int m_width;
 int m_height;
 int m_fps;
 int m_bitrate;

 bool m_waitKeyFrame;
};

VOutVideoStream::VOutVideoStream( int width, int height, int fps, int bitrate )
{
 d = new Private( );
 d->m_width = width;
 d->m_height = height;
 d->m_fps = fps;
 d->m_context = 0;
 d->m_videoStreamIndex = -1;
 d->m_audioStreamIndex = -1;
 d->m_bitrate = bitrate;
 d->m_waitKeyFrame = true;
}

bool VOutVideoStream::connectToServer( const std::string& uri )
{
 assert( ! d->m_context );

 // initalize the AV context
 d->m_context = avformat_alloc_context();
 if( !d->m_context )
 return false;
 // get the output format
 d->m_context->oformat = av_guess_format( "ffm", NULL, NULL );
 if( ! d->m_context->oformat )
 return false;

 strcpy( d->m_context->filename, uri.c_str( ) );

 // add an H.264 stream
 AVStream *stream = avformat_new_stream( d->m_context, NULL );
 if ( ! stream )
 return false;
 // initalize codec
 AVCodecContext* codec = stream->codec;
 if( d->m_context->oformat->flags & AVFMT_GLOBALHEADER )
 codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
 codec->codec_id = CODEC_ID_H264;
 codec->codec_type = AVMEDIA_TYPE_VIDEO;
 strcpy( codec->codec_name, "libx264" );
// codec->codec_tag = ( unsigned('4') << 24 ) + (unsigned('6') << 16 ) + ( unsigned('2') << 8 ) + 'H';
 codec->width = d->m_width;
 codec->height = d->m_height;
 codec->time_base.den = d->m_fps;
 codec->time_base.num = 1;
 codec->bit_rate = d->m_bitrate;
 d->m_videoStreamIndex = stream->index;

 // add an MP3 stream
 stream = avformat_new_stream( d->m_context, NULL );
 if ( ! stream )
 return false;
 // initalize codec
 codec = stream->codec;
 if( d->m_context->oformat->flags & AVFMT_GLOBALHEADER )
 codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
 codec->codec_id = CODEC_ID_MP3;
 codec->codec_type = AVMEDIA_TYPE_AUDIO;
 strcpy( codec->codec_name, "libmp3lame" );
 codec->sample_fmt = AV_SAMPLE_FMT_S16;
 codec->channels = 2;
 codec->bit_rate = 64000;
 codec->sample_rate = 44100;
 d->m_audioStreamIndex = stream->index;

 // try to open the stream
 if( avio_open( &d->m_context->pb, d->m_context->filename, AVIO_FLAG_WRITE ) < 0 )
 return false;

 // write the header
 return avformat_write_header( d->m_context, NULL ) == 0;
}

void VOutVideoStream::disconnect( )
{
 assert( d->m_context );

 avio_close( d->m_context->pb );
 avformat_free_context( d->m_context );
 d->m_context = 0;
}

VOutVideoStream::~VOutVideoStream( )
{
 if( d->m_context )
 disconnect( );
 delete d;
}

int VOutVideoStream::getVopType( const std::vector& image )
{
 if( image.size( ) < 6 )
 return -1;
 unsigned char *b = (unsigned char*)image.data( );

 // Verify NAL marker
 if( b[ 0 ] || b[ 1 ] || 0x01 != b[ 2 ] ) {
 ++b;
 if ( b[ 0 ] || b[ 1 ] || 0x01 != b[ 2 ] )
 return -1;
 }

 b += 3;

 // Verify VOP id
 if( 0xb6 == *b ) {
 ++b;
 return ( *b & 0xc0 ) >> 6;
 }

 switch( *b ) {
 case 0x65: return 0;
 case 0x61: return 1;
 case 0x01: return 2;
 }

 return -1;
}

bool VOutVideoStream::sendVideoFrame( std::vector& image )
{
 // Init packet
 AVPacket pkt;
 av_init_packet( &pkt );
 pkt.flags |= ( 0 >= getVopType( image ) ) ? AV_PKT_FLAG_KEY : 0;

 // Wait for key frame
 if ( d->m_waitKeyFrame ) {
 if( pkt.flags & AV_PKT_FLAG_KEY )
 d->m_waitKeyFrame = false;
 else
 return true;
 }

 pkt.stream_index = d->m_videoStreamIndex;
 pkt.data = image.data( );
 pkt.size = image.size( );
 pkt.pts = pkt.dts = AV_NOPTS_VALUE;

 return av_write_frame( d->m_context, &pkt ) >= 0;
}

bool VOutVideoStream::sendAudioFrame( std::vector& audio )
{
 // Init packet
 AVPacket pkt;
 av_init_packet( &pkt );
 pkt.stream_index = d->m_audioStreamIndex;
 pkt.data = audio.data( );
 pkt.size = audio.size( );
 pkt.pts = pkt.dts = AV_NOPTS_VALUE;

 return av_write_frame( d->m_context, &pkt ) >= 0;
}
</cassert></stdexcept>


Here is how I use it :



BOOST_AUTO_TEST_CASE(testSendingVideo)
{
 const int framesToGrab = 90000;

 VOutVideoStream stream( VIDEO_WIDTH, VIDEO_HEIGHT, FPS, VIDEO_BITRATE );
 if( stream.connectToServer( URI ) ) {
 VAudioEncoder audioEncoder( AUDIO_SAMPLE_RATE, AUDIO_BIT_RATE );
 VAudioCapture microphone( MICROPHONE_NAME, AUDIO_SAMPLE_RATE, audioEncoder.getFrameSize( ) );

 VLogitecCamera camera( VIDEO_WIDTH, VIDEO_HEIGHT );
 BOOST_REQUIRE( camera.open( CAMERA_PORT ) );
 BOOST_REQUIRE( camera.startCapturing( ) );

 std::vector image, encodedAudio;
 std::vector voice;
 boost::system_time startTime;
 int delta;
 for( int i = 0; i < framesToGrab; ++i ) {
 startTime = boost::posix_time::microsec_clock::universal_time( );

 BOOST_REQUIRE( camera.read( image ) );
 BOOST_REQUIRE( microphone.read( voice ) );
 audioEncoder.encode( voice, encodedAudio );

 BOOST_REQUIRE( stream.sendVideoFrame( image ) );
 BOOST_REQUIRE( stream.sendAudioFrame( encodedAudio ) );

 delta = ( boost::posix_time::microsec_clock::universal_time( ) - startTime ).total_milliseconds( );
 if( delta < 1000 / FPS )
 boost::thread::sleep( startTime + boost::posix_time::milliseconds( 1000 / FPS - delta ) );
 }

 BOOST_REQUIRE( camera.stopCapturing( ) );
 BOOST_REQUIRE( camera.close( ) );
 }
 else
 std::cout << "failed to connect to server" << std::endl;
}



I think my problem is in PTS and DTS. Can anyone help me ?


-
Song name under video
2 septembre 2020, par ottpeterI'm trying to write the song name under the video with ffmpeg. My mp3 files are running in a loop like this :

-stream_loop -1 -i music.txt
My workaround would be to write an SRT file with timecodes, a script would determine when next song is comming, and I would repeat this, let's say, a 1000 times (time codes adjusted), then I would get song names for a month for example. (this would be done before ffmpeg is started)
Obviously this is not optimal, especially because I can't loop the SRT file as well, because of the timecode. It would be better to do this with a filter complex.

Is there a way to know the name of the mp3 that is currently playing, in ffmpeg ?


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