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Stereo master soundtrack
17 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Audio
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#7 Ambience
16 octobre 2011, par
Mis à jour : Juin 2015
Langue : English
Type : Audio
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#6 Teaser Music
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#5 End Title
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#3 The Safest Place
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#4 Emo Creates
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
Autres articles (62)
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21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
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Sur d’autres sites (9496)
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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


-
ffmpeg nvdec not available when adding subtitles to mp4
17 février 2019, par whatdoineed2doI have a mp4 video that I want to BURN-IN subtitles (from a .ass file and via
-vf ass=/tmp/conf-notes.ass) with ffmpeg on a machine with a GTX1060 card however ffmpeg reports that it fails to create the NVDEC decoder.[h264 @ 0xcb9380] Error creating a NVDEC decoder: 1
[h264 @ 0xcb9380] Failed setup for format cuda: hwaccel initialisation returned error.The output file is generated ok but during the creation the CPU is used heavily (I assume for decode) - if I drop the
-vf ass=/tmp/conf-notes.assand perform an mp4->mp4 reencode there are no problems.I want to know what I am missing from my command to allow the GPU to perform the decode when an
.assfile is added to the chain.$ ffmpeg -hwaccel cuvid -i 2019-01-conferance.mp4 -vf ass=/tmp/conf-notes.ass -c:a copy -preset llhq -rc vbr_hq -vb 2M -minrate 500k -maxrate 12M -c:v h264_nvenc export.mp4
ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 8 (GCC)
configuration: --arch=x86_64 --bindir=/usr/bin --datadir=/usr/share/ffmpeg --disable-debug --disable-static --disable-stripping --enable-alsa --enable-avfilter --enable-avresample --enable-bzlib --enable-decklink --enable-doc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gpl --enable-iconv --enable-libass --enable-libbluray --enable-libcdio --enable-libdc1394 --enable-libdrm --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libkvazaar --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librsvg --enable-librtmp --enable-librubberband --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-libxcb-shape --enable-libxml2 --enable-libxvid --enable-libzvbi --enable-lv2 --enable-lzma --enable-libndi_newtek --enable-nonfree --enable-openal --enable-opencl --enable-opengl --enable-postproc --enable-pthreads --enable-sdl2 --enable-shared --enable-version3 --enable-xlib --enable-zlib --extra-cflags=-I/usr/include/cuda --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' --prefix=/usr --shlibdir=/usr/lib64 --enable-cuda --enable-cuvid --enable-libnpp --enable-nvdec --enable-nvenc --enable-runtime-cpudetect
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2019-01-conferance.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2019-01-12T00:00:06.000000Z
Duration: 00:00:24.07, start: 0.000000, bitrate: 11542 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 11350 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
Metadata:
creation_time : 2019-01-12T00:00:07.000000Z
handler_name : Mainconcept MP4 Video Media Handler
encoder : AVC Coding
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2019-01-12T00:00:07.000000Z
handler_name : Mainconcept MP4 Sound Media Handler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[h264 @ 0xcb9380] Error creating a NVDEC decoder: 1
[h264 @ 0xcb9380] Failed setup for format cuda: hwaccel initialisation returned error.
[Parsed_ass_0 @ 0x1241c00] Shaper: FriBidi 1.0.2 (SIMPLE) HarfBuzz-ng 1.7.5 (COMPLEX)
[Parsed_ass_0 @ 0x1241c00] Using font provider fontconfig
[Parsed_ass_0 @ 0x1241c00] Added subtitle file: '/tmp/conf-notes.ass' (2 styles, 101 events)The
.assfile has been generated from a.srtfile viaffmpeg -i foo.srt foo.ass -
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 ?


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