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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (16)
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Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Qu’est ce qu’un éditorial
21 juin 2013, parEcrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
Vous pouvez personnaliser le formulaire de création d’un éditorial.
Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...) -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)
Sur d’autres sites (2971)
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libx264 encoder video plays too fast
23 avril 2014, par NickI’m trying to write a program that uses libx264 to encode the video frames. I’ve wrapped this code into a small class (see below). I have frames that are in YUV420 format. libx264 encodes the frames and I save them to a file. I can play the file back in VLC, all of the frames are there, but it plays back at several hundred times the actual frame rate. Currently I am capturing frames at 2.5 FPS, but they play back as if it was recorded at 250 or more FPS. I’ve tried to change the frame rate with no luck.
I’ve also tried to set
_param.b_vfr_input = 1and then set the time bases appropriately, but that causes my program to crash. Any ideas ? My encode code is shown below. I’ve also included the output of ffprobe -show_frames
Wrapper Class :
x264wrapper::x264wrapper(int width, int height, int fps, int timeBaseNum, int timeBaseDen, int vfr)
{
x264_param_default_preset(&_param, "veryfast", "zerolatency");
_param.i_threads = 1;
_param.i_width = width;
_param.i_height = height;
_param.i_fps_num = fps;
_param.i_fps_den = 1;
// Intra refres:
_param.i_keyint_max = fps;
_param.b_intra_refresh = 1;
//Rate control:
_param.rc.i_rc_method = X264_RC_CRF;
//_param.rc.i_rc_method = X264_RC_CQP;
_param.rc.f_rf_constant = 25;
_param.rc.f_rf_constant_max = 35;
//For streaming:
_param.b_repeat_headers = 1;
_param.b_annexb = 1;
// misc
_param.b_vfr_input = vfr;
_param.i_timebase_num = timeBaseNum;
_param.i_timebase_den = timeBaseDen;
_param.i_log_level = X264_LOG_DEBUG;
_encoder = x264_encoder_open(&_param);
cout << "Timebase " << _param.i_timebase_num << "/" << _param.i_timebase_den << endl;
cout << "fps " << _param.i_fps_num << "/" << _param.i_fps_den << endl;
_ticks_per_frame = (int64_t)_param.i_timebase_den * _param.i_fps_den / _param.i_timebase_num / _param.i_fps_num;
cout << "ticks_per_frame " << _ticks_per_frame << endl;
int result = x264_picture_alloc(&_pic_in, X264_CSP_I420, width, height);
if (result != 0)
{
cout << "Failed to allocate picture" << endl;
throw(1);
}
_ofs = new ofstream("output.h264", ofstream::out | ofstream::binary);
_pts = 0;
}
x264wrapper::~x264wrapper(void)
{
_ofs->close();
}
void x264wrapper::encode(uint8_t * buf)
{
x264_nal_t* nals;
int i_nals;
convertFromBalserToX264(buf);
_pts += _ticks_per_frame;
_pic_in.i_pts = _pts;
x264_picture_t pic_out;
int frame_size = x264_encoder_encode(_encoder, &nals, &i_nals, &_pic_in, &pic_out);
if (frame_size >= 0)
{
_ofs->write((char*)nals[0].p_payload, frame_size);
}
else
{
cout << "error: x264_encoder_encode failed" << endl;
}
}Output of ffprobe -show_frames :
[FRAME]
media_type=video
key_frame=1
pkt_pts=N/A
pkt_pts_time=N/A
pkt_dts=N/A
pkt_dts_time=N/A
pkt_duration=48000
pkt_duration_time=0.040000
pkt_pos=0
width=1920
height=1080
pix_fmt=yuv420p
sample_aspect_ratio=N/A
pict_type=I
coded_picture_number=0
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
reference=0
[/FRAME]
[FRAME]
media_type=video
key_frame=0
pkt_pts=N/A
pkt_pts_time=N/A
pkt_dts=N/A
pkt_dts_time=N/A
pkt_duration=N/A
pkt_duration_time=N/A
pkt_pos=54947
width=1920
height=1080
pix_fmt=yuv420p
sample_aspect_ratio=N/A
pict_type=P
coded_picture_number=1
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
reference=0
[/FRAME]
[FRAME]
media_type=video
key_frame=0
pkt_pts=N/A
pkt_pts_time=N/A
pkt_dts=N/A
pkt_dts_time=N/A
pkt_duration=N/A
pkt_duration_time=N/A
pkt_pos=57899
width=1920
height=1080
pix_fmt=yuv420p
sample_aspect_ratio=N/A
pict_type=P
coded_picture_number=2
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
reference=0
[/FRAME] -
Audio plays to fast in encoded file using ffmpeg
9 avril 2014, par elkI'm encoding video and audio from a Blackmagic device using the DeckLink API.
I pass the video and audio frames to ffmpeg to create a HLS stream.
The problem is that the audio is not synced with the video in the generated video files, the audio plays way too fast.These two functions are called when new frames arrive.
-(void)videoFrameArrived:(IDeckLinkVideoInputFrame *)videoFrame {
void *frameBytes;
BMDTimeValue frameTime;
BMDTimeValue frameDuration;
BOOL hasValidInputSource = (videoFrame->GetFlags() & bmdFrameHasNoInputSource) != 0 ? NO : YES;
BMDPixelFormat pixelFormat = videoFrame->GetPixelFormat();
assert(pixelFormat == bmdFormat8BitYUV);
if(!hasValidInputSource) {
NSLog(@"invalid input source");
return;
}
if (videoFrame) {
videoFrame->AddRef();
AVCodecContext *c;
c = video_st->codec;
videoFrame->GetBytes(&frameBytes);
videoFrame->GetStreamTime(&frameTime, &frameDuration, video_st->time_base.den);
//Encode the frame
AVPacket pkt;
int got_output;
int size;
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
size = avpicture_fill((AVPicture*)BMPict, (uint8_t *)frameBytes, PIX_FMT_UYVY422, (int)videoFrame->GetWidth(), (int)videoFrame->GetHeight());
if(size < 0) {
NSLog(@"Could not fill image");
}
//Convert to compatible format
static struct SwsContext *sws_ctx;
if (!sws_ctx) {
if(!sws_isSupportedInput(PIX_FMT_UYVY422) || !sws_isSupportedOutput(pix_fmt)) {
NSLog(@"input or output formats not supported by ffmpeg ");
}
sws_ctx = sws_getContext((int)videoFrame->GetWidth(), (int)videoFrame->GetHeight(), PIX_FMT_UYVY422, outputWidth, outputHeight, pix_fmt, SWS_BICUBIC, NULL, NULL, NULL);
if (!sws_ctx) {
NSLog(@"Could not initialize the conversion context");
exit(1);
}
}
sws_scale(sws_ctx, (const uint8_t * const *)BMPict->data, BMPict->linesize, 0, (int)videoFrame->GetHeight(), pict->data, pict->linesize);
int64_t pts = frameTime / video_st->time_base.num;
if (initial_video_pts == AV_NOPTS_VALUE) {
initial_video_pts = pts;
}
pts -= initial_video_pts;
pict->pts = pts;
if (avcodec_encode_video2(c, &pkt, pict, &got_output) < 0) {
NSLog(@"Error encoding video frame\n");
exit(1);
}
if (got_output) {
if (c->coded_frame->key_frame) {
pkt.flags |= AV_PKT_FLAG_KEY;
}
pkt.stream_index = video_st->index;
if(av_interleaved_write_frame(oc, &pkt) != 0) {
NSLog(@"failed to write video frame");
}
} else {
NSLog(@"Got no video packet!");
}
videoFrame->Release();
}
}
-(void)audioPacketArrived:(IDeckLinkAudioInputPacket *)audioFrame {
void *audioFrameBytes;
if (audioFrame) {
AVCodecContext *c;
AVPacket pkt;
int got_packet;
BMDTimeValue audio_pts;
av_init_packet(&pkt);
c = audio_st->codec;
int audioFramesize = (int)audioFrame->GetSampleFrameCount() * g_audioChannels * (g_audioSampleDepth / 8);
audioFrame->GetBytes(&audioFrameBytes);
audioFrame->GetPacketTime(&audio_pts, audio_st->time_base.den);
if(avcodec_fill_audio_frame(aFrame, c->channels, c->sample_fmt, (uint8_t*)audioFrameBytes, audioFramesize, 0) < 0) {
NSLog(@"Could not fill audio frame!");
}
pkt.data = NULL;
pkt.size = 0;
uint64_t pts = audio_pts / audio_st->time_base.num;
if (initial_audio_pts == AV_NOPTS_VALUE) {
initial_audio_pts = pts;
}
pts -= initial_audio_pts;
aFrame->pts = pts;
if(avcodec_encode_audio2(c, &pkt, aFrame, &got_packet) != 0) {
NSLog(@"Failed to encode audio!");
}
if(got_packet) {
pkt.stream_index = audio_st->index;
if(av_interleaved_write_frame(oc, &pkt) != 0) {
NSLog(@"failed to write audio packet!");
}
}
}
}The video streams are setup like this :
static AVStream *add_audio_stream(AVFormatContext *oc, enum AVCodecID codec_id) {
AVCodecContext *c;
AVCodec *codec;
AVStream *st;
codec = avcodec_find_encoder(codec_id);
if (!codec) {
NSLog(@"audio codec not found");
exit(1);
}
st = avformat_new_stream(oc, codec);
if (!st) {
NSLog(@"Could not alloc stream");
exit(1);
}
c = st->codec;
c->codec_id = codec_id;
c->codec_type = AVMEDIA_TYPE_AUDIO;
if(codec_id == AV_CODEC_ID_AAC) {
c->strict_std_compliance = -2;
}
c->sample_fmt = sample_fmt;
c->sample_rate = 48000;
c->channels = g_audioChannels;
if(c->channels == 2) {
c->channel_layout = AV_CH_LAYOUT_STEREO;
} else if(c->channels == 1) {
c->channel_layout = AV_CH_LAYOUT_MONO;
}
// some formats want stream headers to be separate
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
NSLog(@"Audio requires global headers");
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
if (avcodec_open2(c, codec, NULL) < 0) {
NSLog(@"could not open audio codec");
exit(1);
}
aFrame = av_frame_alloc();
aFrame->nb_samples = c->frame_size;
aFrame->format = c->sample_fmt;
aFrame->channel_layout = c->channel_layout;
return st;
}
static AVStream *add_video_stream(AVFormatContext *oc, enum AVCodecID codec_id) {
AVCodecContext *c;
AVCodec *codec;
AVStream *st;
/* find the video encoder */
codec = avcodec_find_encoder(codec_id);
if (!codec) {
NSLog(@"video codec not found");
exit(1);
}
st = avformat_new_stream(oc, codec);
if (!st) {
NSLog(@"Could not alloc stream");
exit(1);
}
c = st->codec;
avcodec_get_context_defaults3(c, codec);
c->codec_id = codec_id;
c->codec_type = AVMEDIA_TYPE_VIDEO;
AVDictionary *opts = NULL;
c->width = outputWidth;
c->height = outputHeight;
displayMode->GetFrameRate(&frameRateDuration, &frameRateScale);
c->time_base.num = (int)frameRateDuration;
c->time_base.den = (int)frameRateScale;
c->pix_fmt = pix_fmt;
if(codec_id == AV_CODEC_ID_H264) {
av_dict_set(&opts, "preset", "superfast", 0);
c->profile = FF_PROFILE_H264_MAIN;
c->max_b_frames = 0;
c->gop_size = 0; //0 = Intra only!
c->qmin = 25; // min quantizer
c->qmax = 51;
c->max_qdiff = 4;
}
// some formats want stream headers to be separate
if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
NSLog(@"Video requires global headers");
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
/* open the codec */
if (avcodec_open2(c, codec, &opts) < 0) {
NSLog(@"could not open video codec");
exit(1);
}
BMPict = avcodec_alloc_frame();
pict = avcodec_alloc_frame(); //Deprecated but works
if(avpicture_alloc((AVPicture*)BMPict, PIX_FMT_UYVY422, (int)displayMode->GetWidth(), (int)displayMode->GetHeight()) != 0) {
NSLog(@"Could not allocate picture bmpict!");
}
if(avpicture_alloc((AVPicture*)pict, pix_fmt, outputWidth, outputHeight) != 0) {
NSLog(@"Could not allocate picture pict!");
}
return st;
}The pts for audio and video both begin with 0 and increase with 3600 because both streams timescale is 90000.
What have I missed ?
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Video creation with the most recent ffmpeg API (2017)
19 octobre 2022, par ar2015I have started learning how to work with
ffmpegwhich has a suffering deprecation of all tutorial and available examples such as this.


I am looking for a code which creates an output video.



Unfortunately, most of good examples are focusing on reading from a file rather than creating one.



Here, I have found a deprecated example and I spent a long time to fix its errors until it became like this :



#include <iostream>
#include 
#include 
#include <string>

extern "C" {
 #include <libavcodec></libavcodec>avcodec.h>
 #include <libavformat></libavformat>avformat.h>
 #include <libswscale></libswscale>swscale.h>
 #include <libavformat></libavformat>avio.h>
 #include <libavutil></libavutil>opt.h>
}

#define WIDTH 800
#define HEIGHT 480
#define STREAM_NB_FRAMES ((int)(STREAM_DURATION * FRAME_RATE))
#define FRAME_RATE 24
#define PIXEL_FORMAT AV_PIX_FMT_YUV420P
#define STREAM_DURATION 5.0 //seconds
#define BIT_RATE 400000

#define AV_CODEC_FLAG_GLOBAL_HEADER (1 << 22)
#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER
#define AVFMT_RAWPICTURE 0x0020

using namespace std;

static int sws_flags = SWS_BICUBIC;

AVFrame *picture, *tmp_picture;
uint8_t *video_outbuf;
int frame_count, video_outbuf_size;


/****** IF LINUX ******/
inline int sprintf_s(char* buffer, size_t sizeOfBuffer, const char* format, ...)
{
 va_list ap;
 va_start(ap, format);
 int result = vsnprintf(buffer, sizeOfBuffer, format, ap);
 va_end(ap);
 return result;
}

/****** IF LINUX ******/
template
inline int sprintf_s(char (&buffer)[sizeOfBuffer], const char* format, ...)
{
 va_list ap;
 va_start(ap, format);
 int result = vsnprintf(buffer, sizeOfBuffer, format, ap);
 va_end(ap);
 return result;
}


static void closeVideo(AVFormatContext *oc, AVStream *st)
{
 avcodec_close(st->codec);
 av_free(picture->data[0]);
 av_free(picture);
 if (tmp_picture)
 {
 av_free(tmp_picture->data[0]);
 av_free(tmp_picture);
 }
 av_free(video_outbuf);
}

static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
{
 AVFrame *picture;
 uint8_t *picture_buf;
 int size;

 picture = av_frame_alloc();
 if(!picture)
 return NULL;
 size = avpicture_get_size(pix_fmt, width, height);
 picture_buf = (uint8_t*)(av_malloc(size));
 if (!picture_buf)
 {
 av_free(picture);
 return NULL;
 }
 avpicture_fill((AVPicture *) picture, picture_buf, pix_fmt, WIDTH, HEIGHT);
 return picture;
}

static void openVideo(AVFormatContext *oc, AVStream *st)
{
 AVCodec *codec;
 AVCodecContext *c;

 c = st->codec;
 if(c->idct_algo == AV_CODEC_ID_H264)
 av_opt_set(c->priv_data, "preset", "slow", 0);

 codec = avcodec_find_encoder(c->codec_id);
 if(!codec)
 {
 std::cout << "Codec not found." << std::endl;
 std::cin.get();std::cin.get();exit(1);
 }

 if(codec->id == AV_CODEC_ID_H264)
 av_opt_set(c->priv_data, "preset", "medium", 0);

 if(avcodec_open2(c, codec, NULL) < 0)
 {
 std::cout << "Could not open codec." << std::endl;
 std::cin.get();std::cin.get();exit(1);
 }
 video_outbuf = NULL;
 if(!(oc->oformat->flags & AVFMT_RAWPICTURE))
 {
 video_outbuf_size = 200000;
 video_outbuf = (uint8_t*)(av_malloc(video_outbuf_size));
 }
 picture = alloc_picture(c->pix_fmt, c->width, c->height);
 if(!picture)
 {
 std::cout << "Could not allocate picture" << std::endl;
 std::cin.get();exit(1);
 }
 tmp_picture = NULL;
 if(c->pix_fmt != AV_PIX_FMT_YUV420P)
 {
 tmp_picture = alloc_picture(AV_PIX_FMT_YUV420P, WIDTH, HEIGHT);
 if(!tmp_picture)
 {
 std::cout << " Could not allocate temporary picture" << std::endl;
 std::cin.get();exit(1);
 }
 }
}


static AVStream* addVideoStream(AVFormatContext *context, enum AVCodecID codecID)
{
 AVCodecContext *codec;
 AVStream *stream;
 stream = avformat_new_stream(context, NULL);
 if(!stream)
 {
 std::cout << "Could not alloc stream." << std::endl;
 std::cin.get();exit(1);
 }

 codec = stream->codec;
 codec->codec_id = codecID;
 codec->codec_type = AVMEDIA_TYPE_VIDEO;

 // sample rate
 codec->bit_rate = BIT_RATE;
 // resolution must be a multiple of two
 codec->width = WIDTH;
 codec->height = HEIGHT;
 codec->time_base.den = FRAME_RATE; // stream fps
 codec->time_base.num = 1;
 codec->gop_size = 12; // intra frame every twelve frames at most
 codec->pix_fmt = PIXEL_FORMAT;
 if(codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 codec->max_b_frames = 2; // for testing, B frames

 if(codec->codec_id == AV_CODEC_ID_MPEG1VIDEO)
 codec->mb_decision = 2;

 if(context->oformat->flags & AVFMT_GLOBALHEADER)
 codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;

 return stream;
}

static void fill_yuv_image(AVFrame *pict, int frame_index, int width, int height)
{
 int x, y, i;
 i = frame_index;

 /* Y */
 for(y=0;ydata[0][y * pict->linesize[0] + x] = x + y + i * 3;
 }
 }

 /* Cb and Cr */
 for(y=0;y<height></height>2;y++) {
 for(x=0;x<width></width>2;x++) {
 pict->data[1][y * pict->linesize[1] + x] = 128 + y + i * 2;
 pict->data[2][y * pict->linesize[2] + x] = 64 + x + i * 5;
 }
 }
}

static void write_video_frame(AVFormatContext *oc, AVStream *st)
{
 int out_size, ret;
 AVCodecContext *c;
 static struct SwsContext *img_convert_ctx;
 c = st->codec;

 if(frame_count >= STREAM_NB_FRAMES)
 {

 }
 else
 {
 if(c->pix_fmt != AV_PIX_FMT_YUV420P)
 {
 if(img_convert_ctx = NULL)
 {
 img_convert_ctx = sws_getContext(WIDTH, HEIGHT, AV_PIX_FMT_YUV420P, WIDTH, HEIGHT,
 c->pix_fmt, sws_flags, NULL, NULL, NULL);
 if(img_convert_ctx == NULL)
 {
 std::cout << "Cannot initialize the conversion context" << std::endl;
 std::cin.get();exit(1);
 }
 }
 fill_yuv_image(tmp_picture, frame_count, WIDTH, HEIGHT);
 sws_scale(img_convert_ctx, tmp_picture->data, tmp_picture->linesize, 0, HEIGHT,
 picture->data, picture->linesize);
 }
 else
 {
 fill_yuv_image(picture, frame_count, WIDTH, HEIGHT);
 }
 }

 if (oc->oformat->flags & AVFMT_RAWPICTURE)
 {
 /* raw video case. The API will change slightly in the near
 futur for that */
 AVPacket pkt;
 av_init_packet(&pkt);

 pkt.flags |= AV_PKT_FLAG_KEY;
 pkt.stream_index= st->index;
 pkt.data= (uint8_t *)picture;
 pkt.size= sizeof(AVPicture);

 ret = av_interleaved_write_frame(oc, &pkt);
 }
 else
 {
 /* encode the image */
 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture);
 /* if zero size, it means the image was buffered */
 if (out_size > 0)
 {
 AVPacket pkt;
 av_init_packet(&pkt);

 if (c->coded_frame->pts != AV_NOPTS_VALUE)
 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
 if(c->coded_frame->key_frame)
 pkt.flags |= AV_PKT_FLAG_KEY;
 pkt.stream_index= st->index;
 pkt.data= video_outbuf;
 pkt.size= out_size;
 /* write the compressed frame in the media file */
 ret = av_interleaved_write_frame(oc, &pkt);
 } else {
 ret = 0;
 }
 }
 if (ret != 0) {
 std::cout << "Error while writing video frames" << std::endl;
 std::cin.get();exit(1);
 }
 frame_count++;
}

int main ( int argc, char *argv[] )
{
 const char* filename = "test.h264";
 AVOutputFormat *outputFormat;
 AVFormatContext *context;
 AVCodecContext *codec;
 AVStream *videoStream;
 double videoPTS;

 // init libavcodec, register all codecs and formats
 av_register_all(); 
 // auto detect the output format from the name
 outputFormat = av_guess_format(NULL, filename, NULL);
 if(!outputFormat)
 {
 std::cout << "Cannot guess output format! Using mpeg!" << std::endl;
 std::cin.get();
 outputFormat = av_guess_format(NULL, "h263" , NULL);
 }
 if(!outputFormat)
 {
 std::cout << "Could not find suitable output format." << std::endl;
 std::cin.get();exit(1);
 }

 context = avformat_alloc_context();
 if(!context)
 {
 std::cout << "Cannot allocate avformat memory." << std::endl;
 std::cin.get();exit(1);
 }
 context->oformat = outputFormat;
 sprintf_s(context->filename, sizeof(context->filename), "%s", filename);
 std::cout << "Is '" << context->filename << "' = '" << filename << "'" << std::endl;


 videoStream = NULL;
 outputFormat->audio_codec = AV_CODEC_ID_NONE;
 videoStream = addVideoStream(context, outputFormat->video_codec);

 /* still needed?
 if(av_set_parameters(context, NULL) < 0)
 {
 std::cout << "Invalid output format parameters." << std::endl;
 exit(0);
 }*/

 av_dump_format(context, 0, filename, 1);

 if(videoStream)
 openVideo(context, videoStream);

 if(!outputFormat->flags & AVFMT_NOFILE)
 {
 if(avio_open(&context->pb, filename, AVIO_FLAG_READ_WRITE) < 0)
 {
 std::cout << "Could not open " << filename << std::endl;
 std::cin.get();exit(1);
 }
 }

 avformat_write_header(context, 0);

 while(true)
 {
 if(videoStream)
 videoPTS = (double) videoStream->pts.val * videoStream->time_base.num / videoStream->time_base.den;
 else
 videoPTS = 0.;

 if((!videoStream || videoPTS >= STREAM_DURATION))
 {
 break;
 }
 write_video_frame(context, videoStream);
 }
 av_write_trailer(context);
 if(videoStream)
 closeVideo(context, videoStream);
 for(int i = 0; i < context->nb_streams; i++)
 {
 av_freep(&context->streams[i]->codec);
 av_freep(&context->streams[i]);
 }

 if(!(outputFormat->flags & AVFMT_NOFILE))
 {
 avio_close(context->pb);
 }
 av_free(context);
 std::cin.get();
 return 0;
}
</string></iostream>


Compile :



g++ -I ./FFmpeg/ video.cpp -L fflibs -lavcodec -lavformat



The code comes with two errors :



video.cpp:249:84: error: ‘avcodec_encode_video’ was not declared in this scope
 out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture);
 ^


video.cpp: In function ‘int main(int, char**)’:
video.cpp:342:46: error: ‘AVStream {aka struct AVStream}’ has no member named ‘pts’
 videoPTS = (double) videoStream->pts.val * videoStream->time_base.num / videoStream->time_base.den;
 ^



and a huge number of warnings for deprecation.



video.cpp: In function ‘void closeVideo(AVFormatContext*, AVStream*)’:
video.cpp:60:23: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 avcodec_close(st->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:60:23: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 avcodec_close(st->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:60:23: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 avcodec_close(st->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp: In function ‘AVFrame* alloc_picture(AVPixelFormat, int, int)’:
video.cpp:80:12: warning: ‘int avpicture_get_size(AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 size = avpicture_get_size(pix_fmt, width, height);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5228:5: note: declared here
 int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
 ^
video.cpp:80:12: warning: ‘int avpicture_get_size(AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 size = avpicture_get_size(pix_fmt, width, height);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5228:5: note: declared here
 int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
 ^
video.cpp:80:53: warning: ‘int avpicture_get_size(AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 size = avpicture_get_size(pix_fmt, width, height);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5228:5: note: declared here
 int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
 ^
video.cpp:87:5: warning: ‘int avpicture_fill(AVPicture*, const uint8_t*, AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 avpicture_fill((AVPicture *) picture, picture_buf, pix_fmt, WIDTH, HEIGHT);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5213:5: note: declared here
 int avpicture_fill(AVPicture *picture, const uint8_t *ptr,
 ^
video.cpp:87:5: warning: ‘int avpicture_fill(AVPicture*, const uint8_t*, AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 avpicture_fill((AVPicture *) picture, picture_buf, pix_fmt, WIDTH, HEIGHT);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5213:5: note: declared here
 int avpicture_fill(AVPicture *picture, const uint8_t *ptr,
 ^
video.cpp:87:78: warning: ‘int avpicture_fill(AVPicture*, const uint8_t*, AVPixelFormat, int, int)’ is deprecated [-Wdeprecated-declarations]
 avpicture_fill((AVPicture *) picture, picture_buf, pix_fmt, WIDTH, HEIGHT);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:5213:5: note: declared here
 int avpicture_fill(AVPicture *picture, const uint8_t *ptr,
 ^
video.cpp: In function ‘void openVideo(AVFormatContext*, AVStream*)’:
video.cpp:96:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:96:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:96:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp: In function ‘AVStream* addVideoStream(AVFormatContext*, AVCodecID)’:
video.cpp:151:21: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 codec = stream->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:151:21: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 codec = stream->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:151:21: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 codec = stream->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp: In function ‘void write_video_frame(AVFormatContext*, AVStream*)’:
video.cpp:202:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:202:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:202:13: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 c = st->codec;
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:256:20: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if (c->coded_frame->pts != AV_NOPTS_VALUE)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:256:20: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if (c->coded_frame->pts != AV_NOPTS_VALUE)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:256:20: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if (c->coded_frame->pts != AV_NOPTS_VALUE)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:257:42: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:257:42: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:257:42: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:258:19: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if(c->coded_frame->key_frame)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:258:19: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if(c->coded_frame->key_frame)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:258:19: warning: ‘AVCodecContext::coded_frame’ is deprecated [-Wdeprecated-declarations]
 if(c->coded_frame->key_frame)
 ^
In file included from video.cpp:8:0:
./FFmpeg/libavcodec/avcodec.h:2723:35: note: declared here
 attribute_deprecated AVFrame *coded_frame;
 ^
video.cpp:357:40: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 av_freep(&context->streams[i]->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:357:40: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 av_freep(&context->streams[i]->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:357:40: warning: ‘AVStream::codec’ is deprecated [-Wdeprecated-declarations]
 av_freep(&context->streams[i]->codec);
 ^
In file included from video.cpp:9:0:
./FFmpeg/libavformat/avformat.h:876:21: note: declared here
 AVCodecContext *codec;
 ^
video.cpp:337:38: warning: ignoring return value of ‘int avformat_write_header(AVFormatContext*, AVDictionary**)’, declared with attribute warn_unused_result [-Wunused-result]
 avformat_write_header(context, 0);
 ^



I have also defined a few macros to redefine those who have been omited. In a modern
ffmpegAPI, they must be replaced.


Could someone please help me solving errors and deprecation warnings to comply with recent
ffmpegAPI ?

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