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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
Mis à jour : Mars 2013
Langue : français
Type : Image
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Exemple de boutons d’action pour une collection personnelle
27 février 2013, par
Mis à jour : Février 2013
Langue : English
Type : Image
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21 juin 2013, parComment changer la date de publication d’un média ?
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Administrer > Configuration des masques de formulaires > Sélectionner "Un média"
Dans la rubrique "Champs à ajouter, cocher "Date de publication "
Cliquer en bas de la page sur Enregistrer -
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Sur d’autres sites (6438)
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FFMPEG fade in/out expressed in milliseconds
22 juillet 2020, par orestinoI working on a programmatic sketch to cut, crop and fade in/out audio from a single input video file.
Everything works pretty well except for the audio fade in fade out.


Everything work fine if I set a fade in and fade out time of 1 (or more) seconds. Here's my command :


ffmpeg -ss 0:1:11.10 -i INPUT_FILE.mp4 -filter:a afade=t=in:st=0:d=1.0,afade=t=out:st=55.867:d=1.0 -filter:v crop=720:720:138:0 -to 0:0:56.86 OUTPUT_FILE.mp4


Fade filter stop working if I set time less than 1 secs (say 100ms like the following example).


ffmpeg -ss 0:1:11.10 -i INPUT_FILE.mp4 -filter:a afade=t=in:st=0:d=0.1,afade=t=out:st=56.767:d=0.1 -filter:v crop=720:720:138:0 -to 0:0:56.86 OUTPUT_FILE.mov


I mean, ffmpeg is not complaining about any error but the output video file simply has no fade in or fade out.


Why ?
What I'm doing wrong ?


Thank you so much for your support


Edit 22/07/2020 :
here's the output from the second command :


ffmpeg -ss 0:1:11.10 -i 2020-07-20_00-13-35.mkv -filter:a afade=t=in:st=0:d=0.1,afade=t=out:st=56.767:d=0.1 -filter:v crop=720:720:138:0 -to 0:0:56.86 ./_selections/2020-07-20_00-13-35_R1_crop2_w_fadein_fadeout_0:1:11.10.mov
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
 configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
 WARNING: library configuration mismatch
 avcodec configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --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-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
 libavutil 55. 78.100 / 55. 78.100
 libavcodec 57.107.100 / 57.107.100
 libavformat 57. 83.100 / 57. 83.100
 libavdevice 57. 10.100 / 57. 10.100
 libavfilter 6.107.100 / 6.107.100
 libavresample 3. 7. 0 / 3. 7. 0
 libswscale 4. 8.100 / 4. 8.100
 libswresample 2. 9.100 / 2. 9.100
 libpostproc 54. 7.100 / 54. 7.100
Input #0, matroska,webm, from '2020-07-20_00-13-35.mkv':
 Metadata:
 ENCODER : Lavf57.83.100
 Duration: 00:03:19.23, start: 0.000000, bitrate: 2661 kb/s
 Stream #0:0: Video: h264 (High), yuv420p(progressive), 1440x900, 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
 Metadata:
 DURATION : 00:03:19.233000000
 Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp (default)
 Metadata:
 title : audio desktop
 DURATION : 00:03:19.065000000
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x564dad2f9680] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x564dad2f9680] profile High, level 3.1
[libx264 @ 0x564dad2f9680] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=6 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=25 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
Output #0, mov, to './_selections/2020-07-20_00-13-35_R1_crop2_w_fadein_fadeout_0:1:11.10.mov':
 Metadata:
 encoder : Lavf57.83.100
 Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 720x720, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
 Metadata:
 DURATION : 00:03:19.233000000
 encoder : Lavc57.107.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 title : audio desktop
 DURATION : 00:03:19.065000000
 encoder : Lavc57.107.100 aac
frame= 1706 fps=140 q=-1.0 Lsize= 2685kB time=00:00:56.86 bitrate= 386.7kbits/s speed=4.67x 
video:1681kB audio:942kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.351145%
[libx264 @ 0x564dad2f9680] frame I:7 Avg QP:15.76 size: 60653
[libx264 @ 0x564dad2f9680] frame P:448 Avg QP:23.13 size: 1372
[libx264 @ 0x564dad2f9680] frame B:1251 Avg QP:31.17 size: 545
[libx264 @ 0x564dad2f9680] consecutive B-frames: 1.3% 2.3% 1.4% 95.0%
[libx264 @ 0x564dad2f9680] mb I I16..4: 29.2% 37.7% 33.1%
[libx264 @ 0x564dad2f9680] mb P I16..4: 0.1% 0.4% 0.5% P16..4: 2.1% 0.2% 0.2% 0.0% 0.0% skip:96.4%
[libx264 @ 0x564dad2f9680] mb B I16..4: 0.0% 0.3% 0.2% B16..8: 1.5% 0.1% 0.1% direct: 0.0% skip:97.8% L0:51.7% L1:46.3% BI: 2.0%
[libx264 @ 0x564dad2f9680] 8x8 transform intra:43.2% inter:27.7%
[libx264 @ 0x564dad2f9680] coded y,uvDC,uvAC intra: 35.4% 42.2% 40.1% inter: 0.3% 0.5% 0.3%
[libx264 @ 0x564dad2f9680] i16 v,h,dc,p: 61% 37% 2% 0%
[libx264 @ 0x564dad2f9680] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 7% 59% 2% 0% 0% 0% 1% 1%
[libx264 @ 0x564dad2f9680] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 17% 25% 10% 4% 5% 5% 7% 7%
[libx264 @ 0x564dad2f9680] i8c dc,h,v,p: 66% 19% 7% 7%
[libx264 @ 0x564dad2f9680] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x564dad2f9680] ref P L0: 65.1% 15.3% 13.6% 5.9%
[libx264 @ 0x564dad2f9680] ref B L0: 68.1% 27.1% 4.8%
[libx264 @ 0x564dad2f9680] ref B L1: 95.3% 4.7%
[libx264 @ 0x564dad2f9680] kb/s:242.09
[aac @ 0x564dad2f25a0] Qavg: 606.451


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FFMPEG API Mp4 H264 Encoding/Muxing - unspecified pixel format
28 juillet 2020, par FabriceI'm working on a c++ project using ffmpeg. I have to generate an mp4 file with h264 encoding.


My problem is that the file generate but when reading the file with VLC I've got no image, and analyzing it with ffprobe give me (log below) the error :




unspecified pixel format




ffprobe version N-93020-g3224d6691c Copyright (c) 2007-2019 the FFmpeg developers
 built with gcc 8.2.1 (GCC) 20181201
 configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
 libavutil 56. 26.100 / 56. 26.100
 libavcodec 58. 44.100 / 58. 44.100
 libavformat 58. 26.100 / 58. 26.100
 libavdevice 58. 6.101 / 58. 6.101
 libavfilter 7. 48.100 / 7. 48.100
 libswscale 5. 4.100 / 5. 4.100
 libswresample 3. 4.100 / 3. 4.100
 libpostproc 55. 4.100 / 55. 4.100
[h264 @ 02a46240] non-existing PPS 0 referenced
[h264 @ 02a46240] decode_slice_header error
[h264 @ 02a46240] no frame!
...
[h264 @ 02a46240] non-existing PPS 0 referenced
[h264 @ 02a46240] decode_slice_header error
[h264 @ 02a46240] no frame!
[mov,mp4,m4a,3gp,3g2,mj2 @ 02a35380] decoding for stream 0 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 02a35380] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 352x288, 320 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\Fabrice\Desktop\video\Test.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.26.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 323 kb/s
 Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none, 352x288, 320 kb/s, 25.11 fps, 25 tbr, 12800 tbn, 25600 tbc (default)
 Metadata:
 handler_name : VideoHandler


Here is the code I use to genererate my mp4 File, it's based on sample from ffmpeg (see : FFMPEG Muxing sample). I have tried to adapt it without using deprecated function. It works using webm/vp8 encoding, but not mp4/h264.


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

#pragma comment(lib, "avcodec.lib")
#pragma comment(lib, "swscale.lib")
#pragma comment(lib, "avformat.lib")
#pragma comment(lib, "avutil.lib")

/* 10 seconds stream duration */
#define STREAM_DURATION 10.0
#define STREAM_FRAME_RATE 25 /* 25 images/s */
#define STREAM_NB_FRAMES ((int)(STREAM_DURATION * STREAM_FRAME_RATE))
#define STREAM_PIX_FMT AV_PIX_FMT_YUV420P /* default pix_fmt */

//#pragma warning(disable : 4996) // TODO: remove

static int sws_flags = SWS_BICUBIC;

/* Add an output stream. */
static AVStream *add_stream(AVFormatContext *formatContext, AVCodec **codec, enum AVCodecID codecId, AVCodecContext **codecCtx)
{
 AVStream *stream;

 // Get the encoder codec
 *codec = avcodec_find_encoder(codecId);
 if (!(*codec)) {
 fprintf(stderr, "Could not find encoder for '%s'\n",
 avcodec_get_name(codecId));
 exit(1);
 }

 // Get the stream for codec
 stream = avformat_new_stream(formatContext, *codec);
 if (!stream) {
 fprintf(stderr, "Could not allocate stream\n");
 exit(1);
 }
 stream->id = formatContext->nb_streams - 1;

 (*codecCtx) = avcodec_alloc_context3(*codec);

 switch ((*codec)->type) {
 case AVMEDIA_TYPE_VIDEO:
 stream->codecpar->codec_id = codecId;
 stream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
 stream->codecpar->bit_rate = 400000;
 stream->codecpar->width = 352;
 stream->codecpar->height = 288;
 stream->codecpar->format = STREAM_PIX_FMT;
 stream->time_base = { 1, STREAM_FRAME_RATE };

 avcodec_parameters_to_context((*codecCtx), stream->codecpar);
 (*codecCtx)->gop_size = 12; /* emit one intra frame every twelve frames at most */
 (*codecCtx)->max_b_frames = 2;
 (*codecCtx)->time_base = { 1, STREAM_FRAME_RATE };
 if ((*codecCtx)->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
 /* Needed to avoid using macroblocks in which some coeffs overflow.
 * This does not happen with normal video, it just happens here as
 * the motion of the chroma plane does not match the luma plane. */
 (*codecCtx)->mb_decision = 2;
 }
 break;

 default:
 break;
 }
 
 //if (stream->codecpar->codec_id == AV_CODEC_ID_H264) {
 // av_opt_set(codecCtx, "preset", "ultrafast", 0);
 //}
 //(*codecCtx)->flags |= AV_CODEC_FLAG_LOW_DELAY;

 /* Some formats want stream headers to be separate. */
 if (formatContext->oformat->flags & AVFMT_GLOBALHEADER)
 (*codecCtx)->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;


 int ret = avcodec_parameters_from_context(stream->codecpar, (*codecCtx));
 if (ret < 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "avcodec_parameters_from_context returned (%d) - %s", ret, error);
 return false;
 }

 return stream;
}

/**************************************************************/
/* video output */

static AVFrame *frame_video;
static int frame_count;

static void open_video(AVCodec *codec, AVStream *stream, AVCodecContext *codecCtx)
{
 int ret;

 /* open the codec */
 ret = avcodec_open2(codecCtx, codec, NULL);
 if (ret < 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "Could not open video codec: %s\n", error);
 exit(1);
 }

 /* allocate and init a re-usable frame */
 frame_video = av_frame_alloc();
 if (!frame_video) {
 fprintf(stderr, "Could not allocate video frame\n");
 exit(1);
 }

 frame_video->format = codecCtx->pix_fmt;
 frame_video->width = codecCtx->width;
 frame_video->height = codecCtx->height;

 ret = av_frame_get_buffer(frame_video, 32);
 if (ret < 0) {
 fprintf(stderr, "Could not allocate the video frame data\n");
 exit(1);
 }
}

/* Prepare a dummy image. */
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; y < height; y++)
 for (x = 0; x < width; x++)
 pict->data[0][y * pict->linesize[0] + x] = x + y + i * 3;

 /* Cb and Cr */
 for (y = 0; y < height / 2; y++) {
 for (x = 0; x < 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;
 }
 }
}

int timestamp = 0;
static void write_video_frame(AVFormatContext *formatContext, AVStream *stream, AVCodecContext *codecCtx)
{
 int ret;
 static struct SwsContext *sws_ctx;

 if (frame_count >= STREAM_NB_FRAMES) {
 /* No more frames to compress. The codec has a latency of a few
 * frames if using B-frames, so we get the last frames by
 * passing the same picture again. */
 }
 else {
 if (codecCtx->pix_fmt != AV_PIX_FMT_YUV420P) {
 /* as we only generate a YUV420P picture, we must convert it
 * to the codec pixel format if needed */
 if (!sws_ctx) {
 sws_ctx = sws_getContext(codecCtx->width, codecCtx->height, AV_PIX_FMT_YUV420P,
 codecCtx->width, codecCtx->height, codecCtx->pix_fmt,
 sws_flags, NULL, NULL, NULL);
 if (!sws_ctx) {
 fprintf(stderr, "Could not initialize the conversion context\n");
 exit(1);
 }
 }
 fill_yuv_image(frame_video, frame_count, codecCtx->width, codecCtx->height);
 sws_scale(sws_ctx, (const uint8_t * const *)frame_video->data, frame_video->linesize,
 0, codecCtx->height, frame_video->data, frame_video->linesize);
 }
 else {
 fill_yuv_image(frame_video, frame_count, codecCtx->width, codecCtx->height);
 }
 }

 frame_video->format = AV_PIX_FMT_YUV420P;
 frame_video->width = codecCtx->width;
 frame_video->height = codecCtx->height;

 if (formatContext->oformat->flags & 0x0020) {
 /* Raw video case - directly store the picture in the packet */
 AVPacket pkt;
 av_init_packet(&pkt);

 pkt.flags |= AV_PKT_FLAG_KEY;
 pkt.stream_index = stream->index;
 pkt.data = frame_video->data[0];
 pkt.size = sizeof(AVPicture);

 ret = av_interleaved_write_frame(formatContext, &pkt);
 }
 else {
 AVPacket pkt = { 0 };
 av_init_packet(&pkt);

 /* encode the image */
 fprintf(stderr, "\nFrame type : %c\n", av_get_picture_type_char(frame_video->pict_type));
 fprintf(stderr, "Frame pts: %lld, \n", frame_video->pts);
 fprintf(stderr, "Codec timebase: %d/%d\n", codecCtx->time_base.num, codecCtx->time_base.den);
 fprintf(stderr, "Stream timebase: %d/%d\n", stream->time_base.num, stream->time_base.den);
 fprintf(stderr, "Resacale: %lld, \n\n", av_rescale_q(1, codecCtx->time_base, stream->time_base));
 ret = avcodec_send_frame(codecCtx, frame_video);
 if (ret < 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "Error encoding video frame: %s\n", error);
 exit(1);
 }
 /* If size is zero, it means the image was buffered. */
 ret = avcodec_receive_packet(codecCtx, &pkt);
 if (!ret && pkt.size) {
 pkt.stream_index = stream->index;
 fprintf(stderr, "Packet flags : %d\n", pkt.flags);
 fprintf(stderr, "Packet pts: %lld\n", pkt.pts);
 fprintf(stderr, "Packet dts: %lld\n", pkt.dts);
 fprintf(stderr, "Packet duration: %lld\n", pkt.duration);
 fprintf(stderr, "Packet pos: %lld\n\n", pkt.pos);
 
 /* Write the compressed frame to the media file. */
 ret = av_interleaved_write_frame(formatContext, &pkt);
 }
 else {
 ret = 0;
 }
 }
 if (ret != 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "Error while writing video frame: %s\n", error);
 exit(1);
 }
 frame_count++;
}

static void close_video(AVFormatContext *oc, AVStream *st)
{
 av_free(frame_video->data[0]);
 av_free(frame_video);
}

/**************************************************************/
/* media file output */

int main(int argc, char **argv)
{
 // The outputed media
 char filename[100];
 const char *mediaFormat = "mp4"; AVCodecID mediaVideoCodec = AV_CODEC_ID_H264;
 //const char *mediaFormat="webm"; AVCodecID mediaVideoCodec = AV_CODEC_ID_VP8;
 AVOutputFormat *formatOut;
 AVFormatContext *formatCtx;

 // The video stream
 AVStream *stream_video;
 AVCodec *codec_video = nullptr;
 AVCodecContext *codecCtx_video = nullptr;
 double time_video = 0;

 // Return code
 int ret;

 strcpy_s(filename, "C:\\Test.");
 strcat_s(filename, mediaFormat);

 // allocate the output media context
 avformat_alloc_output_context2(&formatCtx, NULL, NULL, filename);
 if (!formatCtx) {
 return 1;
 }
 formatOut = formatCtx->oformat;

 // Add the video stream using H264 codec
 stream_video = NULL;
 stream_video = add_stream(formatCtx, &codec_video, mediaVideoCodec, &codecCtx_video);

 // Open video codec and allocate the necessary encode buffers
 if (stream_video)
 open_video(codec_video, stream_video, codecCtx_video);

 av_dump_format(formatCtx, 0, filename, 1);

 // Open the output media file, if needed
 if (!(formatOut->flags & AVFMT_NOFILE)) {
 ret = avio_open(&formatCtx->pb, filename, AVIO_FLAG_WRITE);
 if (ret < 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "Could not open '%s': %s\n", filename, error);
 return 1;
 }
 }

 // Write media header
 ret = avformat_write_header(formatCtx, NULL);
 if (ret < 0) {
 char error[255];
 av_strerror(ret, error, 255);
 fprintf(stderr, "Error occurred when opening output file: %s\n", error);
 return 1;
 }

 if (frame_video)
 frame_video->pts = 0;
 for (;;) {
 // Compute video time from last added video frame
 time_video = ((double)frame_video->pts) * av_q2d(stream_video->time_base);

 // Stop media if enough time
 if (!stream_video || time_video >= STREAM_DURATION)
 break;

 // Add a video frame
 write_video_frame(formatCtx, stream_video, codecCtx_video);

 // Increase frame pts according to time base
 frame_video->pts += av_rescale_q(1, codecCtx_video->time_base, stream_video->time_base);
 }

 // Write media trailer
 av_write_trailer(formatCtx);

 /* Close each codec. */
 if (stream_video)
 close_video(formatCtx, stream_video);

 if (!(formatOut->flags & AVFMT_NOFILE))
 /* Close the output file. */
 avio_close(formatCtx->pb);

 /* free the stream */
 avformat_free_context(formatCtx);

 return 0;
}


What am I missing ? Which part give me this error ?


-
Processing WebRTC RTC stream in node js server with ffmpeg
23 juillet 2020, par Dave BI am trying to build a video chat app where I am creating an RTCPeerConnection and creating an offer and saving the SDP in a file. I want the SDP I sent to server should be sent to RTMP server like Nginx RTMP. Here is the offer SDP I am getting


v=0
o=- 3688975056307578818 2 IN IP4 127.0.0.1
s=-
t=0 0
a=group:BUNDLE 0 1 2
a=msid-semantic: WMS AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq
m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
c=IN IP4 0.0.0.0
a=rtcp:9 IN IP4 0.0.0.0
a=ice-ufrag:Xtid
a=ice-pwd:jE3iBRpWqFaIN3UJVOAh0G/1
a=ice-options:trickle
a=fingerprint:sha-256 48:E4:36:A6:24:66:F6:40:0F:93:9C:AB:C9:93:DF:C7:0F:D1:21:F5:9E:F7:FA:A8:58:84:1F:68:A1:61:B6:0F
a=setup:actpass
a=mid:0
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id
a=sendrecv
a=msid:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq 284f316d-6c5d-4283-af4d-86d44803807d
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtcp-fb:111 transport-cc
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:110 telephone-event/48000
a=rtpmap:112 telephone-event/32000
a=rtpmap:113 telephone-event/16000
a=rtpmap:126 telephone-event/8000
a=ssrc:2317617486 cname:fpKjO3/hiHYYBw7w
a=ssrc:2317617486 msid:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq 284f316d-6c5d-4283-af4d-86d44803807d
a=ssrc:2317617486 mslabel:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq
a=ssrc:2317617486 label:284f316d-6c5d-4283-af4d-86d44803807d
m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109 124 120 123 119 114 115 116
c=IN IP4 0.0.0.0
a=rtcp:9 IN IP4 0.0.0.0
a=ice-ufrag:Xtid
a=ice-pwd:jE3iBRpWqFaIN3UJVOAh0G/1
a=ice-options:trickle
a=fingerprint:sha-256 48:E4:36:A6:24:66:F6:40:0F:93:9C:AB:C9:93:DF:C7:0F:D1:21:F5:9E:F7:FA:A8:58:84:1F:68:A1:61:B6:0F
a=setup:actpass
a=mid:1
a=extmap:14 urn:ietf:params:rtp-hdrext:toffset
a=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=extmap:13 urn:3gpp:video-orientation
a=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01
a=extmap:12 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay
a=extmap:11 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type
a=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing
a=extmap:8 http://tools.ietf.org/html/draft-ietf-avtext-framemarking-07
a=extmap:9 http://www.webrtc.org/experiments/rtp-hdrext/color-space
a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:5 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
a=extmap:6 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id
a=sendrecv
a=msid:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq 7106bf9f-3f79-4f24-959b-b82b603a7acc
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtcp-fb:96 goog-remb
a=rtcp-fb:96 transport-cc
a=rtcp-fb:96 ccm fir
a=rtcp-fb:96 nack
a=rtcp-fb:96 nack pli
a=rtpmap:97 rtx/90000
a=fmtp:97 apt=96
a=rtpmap:98 VP9/90000
a=rtcp-fb:98 goog-remb
a=rtcp-fb:98 transport-cc
a=rtcp-fb:98 ccm fir
a=rtcp-fb:98 nack
a=rtcp-fb:98 nack pli
a=fmtp:98 profile-id=0
a=rtpmap:99 rtx/90000
a=fmtp:99 apt=98
a=rtpmap:100 VP9/90000
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 transport-cc
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=fmtp:100 profile-id=2
a=rtpmap:101 rtx/90000
a=fmtp:101 apt=100
a=rtpmap:102 H264/90000
a=rtcp-fb:102 goog-remb
a=rtcp-fb:102 transport-cc
a=rtcp-fb:102 ccm fir
a=rtcp-fb:102 nack
a=rtcp-fb:102 nack pli
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=rtpmap:122 rtx/90000
a=fmtp:122 apt=102
a=rtpmap:127 H264/90000
a=rtcp-fb:127 goog-remb
a=rtcp-fb:127 transport-cc
a=rtcp-fb:127 ccm fir
a=rtcp-fb:127 nack
a=rtcp-fb:127 nack pli
a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f
a=rtpmap:121 rtx/90000
a=fmtp:121 apt=127
a=rtpmap:125 H264/90000
a=rtcp-fb:125 goog-remb
a=rtcp-fb:125 transport-cc
a=rtcp-fb:125 ccm fir
a=rtcp-fb:125 nack
a=rtcp-fb:125 nack pli
a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
a=rtpmap:107 rtx/90000
a=fmtp:107 apt=125
a=rtpmap:108 H264/90000
a=rtcp-fb:108 goog-remb
a=rtcp-fb:108 transport-cc
a=rtcp-fb:108 ccm fir
a=rtcp-fb:108 nack
a=rtcp-fb:108 nack pli
a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f
a=rtpmap:109 rtx/90000
a=fmtp:109 apt=108
a=rtpmap:124 H264/90000
a=rtcp-fb:124 goog-remb
a=rtcp-fb:124 transport-cc
a=rtcp-fb:124 ccm fir
a=rtcp-fb:124 nack
a=rtcp-fb:124 nack pli
a=fmtp:124 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d0032
a=rtpmap:120 rtx/90000
a=fmtp:120 apt=124
a=rtpmap:123 H264/90000
a=rtcp-fb:123 goog-remb
a=rtcp-fb:123 transport-cc
a=rtcp-fb:123 ccm fir
a=rtcp-fb:123 nack
a=rtcp-fb:123 nack pli
a=fmtp:123 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032
a=rtpmap:119 rtx/90000
a=fmtp:119 apt=123
a=rtpmap:114 red/90000
a=rtpmap:115 rtx/90000
a=fmtp:115 apt=114
a=rtpmap:116 ulpfec/90000
a=ssrc-group:FID 967462980 1884395933
a=ssrc:967462980 cname:fpKjO3/hiHYYBw7w
a=ssrc:967462980 msid:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq 7106bf9f-3f79-4f24-959b-b82b603a7acc
a=ssrc:967462980 mslabel:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq
a=ssrc:967462980 label:7106bf9f-3f79-4f24-959b-b82b603a7acc
a=ssrc:1884395933 cname:fpKjO3/hiHYYBw7w
a=ssrc:1884395933 msid:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq 7106bf9f-3f79-4f24-959b-b82b603a7acc
a=ssrc:1884395933 mslabel:AqaeHB0L8drTd5r0qQnzCSeYVf4bHFaVqfrq
a=ssrc:1884395933 label:7106bf9f-3f79-4f24-959b-b82b603a7acc
m=application 9 UDP/DTLS/SCTP webrtc-datachannel
c=IN IP4 0.0.0.0
a=ice-ufrag:Xtid
a=ice-pwd:jE3iBRpWqFaIN3UJVOAh0G/1
a=ice-options:trickle
a=fingerprint:sha-256 48:E4:36:A6:24:66:F6:40:0F:93:9C:AB:C9:93:DF:C7:0F:D1:21:F5:9E:F7:FA:A8:58:84:1F:68:A1:61:B6:0F
a=setup:actpass
a=mid:2
a=sctp-port:5000
a=max-message-size:262144


this is the ffmpeg command


ffmpeg -protocol_whitelist rtp,udp,file -loglevel trace -analyzeduration 300M -probesize 300M -i test.sdp -c:v copy -c:a aac -ar 16k -ac 1 -preset ultrafast -tune zerolatency rtmp://127.0.0.1/live/1234


Also trying this


ffmpeg -loglevel debug -protocol_whitelist file,crypto,udp,rtp -re -vcodec libvpx -acodec opus -i test.sdp -vcodec libx264 -acodec aac -y output.mp4


FFMpeg gives an error like this


ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
 built with Apple clang version 11.0.0 (clang-1100.0.33.17)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-protocol_whitelist' ... matched as AVOption 'protocol_whitelist' with argument 'file,crypto,udp,rtp'.
Reading option '-re' ... matched as option 're' (read input at native frame rate) with argument '1'.
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'libvpx'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'opus'.
Reading option '-i' ... matched as input url with argument 'test.sdp'.
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'libx264'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'aac'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option 'output.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url test.sdp.
Applying option re (read input at native frame rate) with argument 1.
Applying option vcodec (force video codec ('copy' to copy stream)) with argument libvpx.
Applying option acodec (force audio codec ('copy' to copy stream)) with argument opus.
Successfully parsed a group of options.
Opening an input file: test.sdp.
[NULL @ 0x7f949000ac00] Opening 'test.sdp' for reading
[sdp @ 0x7f949000ac00] Format sdp probed with size=2048 and score=50
[sdp @ 0x7f949000ac00] audio codec set to: opus
[sdp @ 0x7f949000ac00] audio samplerate set to: 48000
[sdp @ 0x7f949000ac00] audio channels set to: 2
[sdp @ 0x7f949000ac00] audio codec set to: opus
[sdp @ 0x7f949000ac00] audio samplerate set to: 16000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: opus
[sdp @ 0x7f949000ac00] audio samplerate set to: 32000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: adpcm_g722
[sdp @ 0x7f949000ac00] audio samplerate set to: 8000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: pcm_mulaw
[sdp @ 0x7f949000ac00] audio samplerate set to: 8000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: pcm_alaw
[sdp @ 0x7f949000ac00] audio samplerate set to: 8000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: pcm_alaw
[sdp @ 0x7f949000ac00] audio samplerate set to: 32000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: pcm_alaw
[sdp @ 0x7f949000ac00] audio samplerate set to: 16000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: (null)
[sdp @ 0x7f949000ac00] audio samplerate set to: 8000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: (null)
[sdp @ 0x7f949000ac00] audio samplerate set to: 48000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: (null)
[sdp @ 0x7f949000ac00] audio samplerate set to: 32000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: (null)
[sdp @ 0x7f949000ac00] audio samplerate set to: 16000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] audio codec set to: (null)
[sdp @ 0x7f949000ac00] audio samplerate set to: 8000
[sdp @ 0x7f949000ac00] audio channels set to: 1
[sdp @ 0x7f949000ac00] video codec set to: vp8
 Last message repeated 20 times
[udp @ 0x7f948fc07200] bind failed: Address already in use
[AVIOContext @ 0x7f948fe1c4c0] Statistics: 5985 bytes read, 0 seeks
test.sdp: Invalid data found when processing input


Can anyone please point out what I am doing wrong here ? or I am in the right path ?
Please help !


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