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-
I want to take any Audio from a file and encode it as PCM_ALAW. My Example is a .m4a file to .wav file
22 novembre 2023, par ClockmanI have been working on this for a while now while am generally new to ffmpeg library, I have studied it a bit. The challenge I have that at the point of witting to file I get the following exception.


"Exception thrown at 0x00007FFACA8305B3 (avformat-60.dll) in FfmpegPractice.exe : 0xC0000005 : Access violation writing location 0x0000000000000000.". I understand this means am writing to an uninitialized buffer am unable to discover why this is happening. The exception call stack shows the following


avformat-60.dll!avformat_write_header() C
avformat-60.dll!ff_write_chained() C
avformat-60.dll!ff_write_chained() C
avformat-60.dll!av_write_frame() C
FfmpegPractice.exe!main() Line 215 C++


Some things I have tried


This code is part of a larger project built with CMake but for some reason I could no step into ffmpeg library while debugging, So I recompiled ffmpeg ensured debugging was enabled so I could drill down to the root cause but I still could not step into the ffmpeg library.


I then created a minimal project using visual studio c++ console project and I still could not step into the code.


I have read through many ffmpeg docs and some I could find on the internet and I still could not solve it.


This is the code


#include <iostream>

extern "C" {
#include <libavcodec></libavcodec>avcodec.h>
#include <libavformat></libavformat>avformat.h>
#include <libswresample></libswresample>swresample.h>
#include <libavutil></libavutil>opt.h>
#include <libavutil></libavutil>audio_fifo.h>
}

using namespace std;

//in audio file
string filename{ "rapid_caller_test.m4a" };
AVFormatContext* pFormatCtx{};
AVCodecContext* pCodecCtx{};
AVStream* pStream{};

//out audio file
string outFilename{ "output.wav" };
AVFormatContext* pOutFormatCtx{ nullptr };
AVCodecContext* pOutCodecCtx{ nullptr };
AVIOContext* pOutIoContext{ nullptr };
const AVCodec* pOutCodec{ nullptr };
AVStream* pOutStream{ nullptr };
const int OUTPUT_CHANNELS = 1;
const int SAMPLE_RATE = 8000;
const int OUT_BIT_RATE = 64000;
uint8_t** convertedSamplesBuffer{ nullptr };
int64_t dstNmbrSamples{ 0 };
int dstLineSize{ 0 };
static int64_t pts{ 0 };

//conversion context;
SwrContext* swr{};

uint32_t i{ 0 };
int audiostream{ -1 };


void cleanUp() 
{
 avcodec_free_context(&pOutCodecCtx);;
 avio_closep(&(pOutFormatCtx)->pb);
 avformat_free_context(pOutFormatCtx);
 pOutFormatCtx = nullptr;
}

int main()
{

/*
* section to setup input file
*/
if (avformat_open_input(&pFormatCtx, filename.data(), nullptr, nullptr) != 0) {
 cout << "could not open file " << filename << endl;
 return -1;
}
if (avformat_find_stream_info(pFormatCtx, nullptr) < 0) {
 cout << "Could not retrieve stream information from file " << filename << endl;
 return -1;
}
av_dump_format(pFormatCtx, 0, filename.c_str(), 0);

for (i = 0; i < pFormatCtx->nb_streams; i++) {
 if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
 audiostream = i;
 break;
 }
}
if (audiostream == -1) {
 cout << "did not find audio stream" << endl;
 return -1;
}

pStream = pFormatCtx->streams[audiostream];
const AVCodec* pCodec{ avcodec_find_decoder(pStream->codecpar->codec_id) };
pCodecCtx = avcodec_alloc_context3(pCodec);
avcodec_parameters_to_context(pCodecCtx, pStream->codecpar);
if (avcodec_open2(pCodecCtx, pCodec, nullptr)) {
 cout << "could not open codec" << endl;
 return -1;
}

/*
* section to set up output file which is a G711 audio
*/
if (avio_open(&pOutIoContext, outFilename.data(), AVIO_FLAG_WRITE)) {
 cout << "could not open out put file" << endl;
 return -1;
}
if (!(pOutFormatCtx = avformat_alloc_context())) {
 cout << "could not create format conext" << endl;
 cleanUp();
 return -1;
}
pOutFormatCtx->pb = pOutIoContext;
if (!(pOutFormatCtx->oformat = av_guess_format(nullptr, outFilename.data(), nullptr))) {
 cout << "could not find output file format" << endl;
 cleanUp();
 return -1;
}
if (!(pOutFormatCtx->url = av_strdup(outFilename.data()))) {
 cout << "could not allocate file name" << endl;
 cleanUp();
 return -1;
}
if (!(pOutCodec = avcodec_find_encoder(AV_CODEC_ID_PCM_ALAW))) {
 cout << "codec not found" << endl;
 cleanUp();
 return -1;
}
if (!(pOutStream = avformat_new_stream(pOutFormatCtx, nullptr))) {
 cout << "could not create new stream" << endl;
 cleanUp();
 return -1;
}
if (!(pOutCodecCtx = avcodec_alloc_context3(pOutCodec))) {
 cout << "could not allocate codec context" << endl;
 return -1;
}
av_channel_layout_default(&pOutCodecCtx->ch_layout, OUTPUT_CHANNELS);
pOutCodecCtx->sample_rate = SAMPLE_RATE;
pOutCodecCtx->sample_fmt = pOutCodec->sample_fmts[0];
pOutCodecCtx->bit_rate = OUT_BIT_RATE;

//setting sample rate for the container
pOutStream->time_base.den = SAMPLE_RATE;
pOutStream->time_base.num = 1;
if (pOutFormatCtx->oformat->flags & AVFMT_GLOBALHEADER)
 pOutCodecCtx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;

if (avcodec_open2(pOutCodecCtx, pOutCodec, nullptr)) {
 cout << "could not open output codec" << endl;
 cleanUp();
 return -1;
}
if ((avcodec_parameters_from_context(pOutStream->codecpar, pOutCodecCtx)) < 0) {
 cout << "could not initialize stream parameters" << endl;
} 

AVPacket* packet = av_packet_alloc();

swr = swr_alloc();
swr_alloc_set_opts2(&swr, &pOutCodecCtx->ch_layout, pOutCodecCtx->sample_fmt, pOutCodecCtx->sample_rate,&pCodecCtx->ch_layout, pCodecCtx->sample_fmt, pCodecCtx->sample_rate, 0, nullptr);
swr_init(swr);

int ret{};
int bSize{};
while (av_read_frame(pFormatCtx, packet) >= 0) {
 AVFrame* pFrame = av_frame_alloc();
 AVFrame* pOutFrame = av_frame_alloc();
 if (packet->stream_index == audiostream) {
 ret = avcodec_send_packet(pCodecCtx, packet);
 while (ret >= 0) {
 ret = avcodec_receive_frame(pCodecCtx, pFrame);
 if (ret == AVERROR(EAGAIN))
 continue;
 else if (ret == AVERROR_EOF)
 break;
 dstNmbrSamples = av_rescale_rnd(swr_get_delay(swr, pCodecCtx->sample_rate) + pFrame->nb_samples, pOutCodecCtx->sample_rate, pCodecCtx->sample_rate, AV_ROUND_UP);
 if ((av_samples_alloc_array_and_samples(&convertedSamplesBuffer, &dstLineSize, pOutCodecCtx->ch_layout.nb_channels,dstNmbrSamples, pOutCodecCtx->sample_fmt, 0)) < 0) {
 cout << "coult not allocate samples array and buffer" << endl;
 }
 int channel_samples_count{ 0 };
 channel_samples_count = swr_convert(swr, convertedSamplesBuffer, dstNmbrSamples, (const uint8_t**)pFrame->data, pFrame->nb_samples);
 bSize = av_samples_get_buffer_size(&dstLineSize, pOutCodecCtx->ch_layout.nb_channels, channel_samples_count, pOutCodecCtx->sample_fmt, 0);
 cout << "no of samples is " << channel_samples_count << " the buffer size " << bSize << endl;
 pOutFrame->nb_samples = channel_samples_count;
 av_channel_layout_copy(&pOutFrame->ch_layout, &pOutCodecCtx->ch_layout);
 pOutFrame->format = pOutCodecCtx->sample_fmt;
 pOutFrame->sample_rate = pOutCodecCtx->sample_rate;
 if ((av_frame_get_buffer(pOutFrame, 0)) < 0) {
 cout << "could not allocate output frame samples " << endl;
 av_frame_free(&pOutFrame);
 }
 
 //populate out frame buffer
 av_frame_make_writable(pOutFrame);
 for (int i{ 0 }; i < bSize; i++) {
 pOutFrame->data[0][i] = convertedSamplesBuffer[0][i];
 cout << pOutFrame->data[0][i];
 }
 if (pOutFrame) {
 pOutFrame->pts = pts;
 pts += pOutFrame->nb_samples;
 }
 int res = avcodec_send_frame(pOutCodecCtx, pOutFrame);
 if (res < 0) {
 cout << "error sending frame to encoder" << endl;
 cleanUp();
 return -1;
 }
 //int er = avformat_write_header(pOutFormatCtx,nullptr);
 AVPacket* pOutPacket = av_packet_alloc();
 pOutPacket->time_base.num = 1;
 pOutPacket->time_base.den = 8000;
 if (pOutPacket == nullptr) {
 cout << "unable to allocate packet" << endl;
 }
 while (res >= 0) {
 res = avcodec_receive_packet(pOutCodecCtx, pOutPacket);
 if (res == AVERROR(EAGAIN))
 continue;
 else if (ret == AVERROR_EOF)
 break;
 av_packet_rescale_ts(pOutPacket, pOutCodecCtx->time_base, pOutFormatCtx->streams[0]->time_base);
 //av_dump_format(pOutFormatCtx, 0, outFilename.c_str(), 1);
 if (av_write_frame(pOutFormatCtx, pOutPacket) < 0) {
 cout << "could not write frame" << endl;
 }
 }
 }
}
 av_frame_free(&pFrame);
 av_frame_free(&pOutFrame);
}
if (av_write_trailer(pOutFormatCtx) < 0) {
 cout << "could not write file trailer" << endl;
}
swr_free(&swr);
avcodec_free_context(&pOutCodecCtx);
av_packet_free(&packet);
}
</iostream>

Error/Exception


The exception is thrown when I call


if (av_write_frame(pOutFormatCtx, pOutPacket) < 0) { cout << "could not write frame" << endl; }
I also called this line

//int er = avformat_write_header(pOutFormatCtx,nullptr);

to see if I will get an exception but it did not throw any exception.


I have spent weeks on this issue with no success.
My goal is to take any audio from a file an be able to resample it if need be, and transcode it to PCM_ALAW.
I will appreciate any help I can get.


-
Bad src image ptrs converting YUV to RGB after H264 decoding with libav and c++
31 octobre 2023, par Sebastian DELLINGI am getting "bad src image ptrs" errors when trying to convert my frames to RGB with sws_scale after decoding frames from a H264 file and cannot figure out wht is going wrong.


I checked what is causing the error and found the
check_image_pointersfunction in swscale.c which validates that the planes and line sizes needed for the pixel format (av_pix_fmt_desc_get) are present in the given data which seems not to be the case with my data.

The written pgm files look ok to me, also replaying the file works.


I printed the corresponding data of my frame. The problem seems that planes 1 and 2 have lines sizes of 0. All 3 of them seem to have data. Plane 0 line size is three times image width which is also confusing to me.


Here is my output :


Have videoStreamIndex 0 codec id: 27
saving frame 1 C:\\tmp\\output-frame-1.pgm colorspace 2 pix_fmt 0 w: 3840 h: 2160
Required:
plane 0 : 0
plane 1 : 1
plane 2 : 2
plane 3 : 0
Present:
Frame plane 0: 1 , 11520
Frame plane 1: 1 , 0
Frame plane 2: 1 , 0
Frame plane 3: 0 , 0
Frame plane 4: 0 , 0
Frame plane 5: 0 , 0
Frame plane 6: 0 , 0
Frame plane 7: 0 , 0


Here the whole code of my application, the issues occurs in method decode :


#include <iostream>
#include <cstring>
#include <cstdio>
#include <cstdint>
#include <string>
#include <iostream>
#include <chrono>

// #include <opencv2></opencv2>highgui.hpp>
// #include <opencv2></opencv2>opencv.hpp>

extern "C"
{

#include <libswscale></libswscale>swscale.h>
#include <libavcodec></libavcodec>avcodec.h>
#include <libavformat></libavformat>avformat.h>
#include <libavfilter></libavfilter>buffersink.h>
#include <libavfilter></libavfilter>buffersrc.h>
#include <libavutil></libavutil>opt.h>
#include <libavutil></libavutil>pixdesc.h>
#include <libavutil></libavutil>display.h>
#include "libavutil/imgutils.h"
}

#define INBUF_SIZE 4096
class H264Decoder
{
public:
 H264Decoder(const std::string &inputFilename, const std::string &outputFilenamePrefix)
 {

 // Open input file
 if (avformat_open_input(&formatContext, inputFilename.c_str(), nullptr, nullptr) != 0)
 {
 throw std::runtime_error("Could not open input file");
 }

 if (avformat_find_stream_info(formatContext, nullptr) < 0)
 {
 throw std::runtime_error("Could not find stream information");
 }

 // Find H.264 video stream
 for (unsigned i = 0; i < formatContext->nb_streams; i++)
 {
 if (formatContext->streams[i]->codecpar->codec_id == AV_CODEC_ID_H264)
 {
 videoStreamIndex = i;
 std::cout << "Have videoStreamIndex " << videoStreamIndex << " codec id: " << formatContext->streams[i]->codecpar->codec_id << std::endl;
 break;
 }
 }

 if (videoStreamIndex == -1)
 {
 throw std::runtime_error("H.264 video stream not found");
 }

 // Initialize codec and codec context
 const AVCodec *codec = avcodec_find_decoder(formatContext->streams[videoStreamIndex]->codecpar->codec_id);
 if (!codec)
 {
 throw std::runtime_error("Codec not found");
 }

 parser = av_parser_init(codec->id);
 if (!parser)
 {
 throw std::runtime_error("parser not found");
 }

 codecContext = avcodec_alloc_context3(codec);
 if (!codecContext)
 {
 throw std::runtime_error("Could not allocate codec context");
 }

 if (avcodec_open2(codecContext, codec, nullptr) < 0)
 {
 throw std::runtime_error("Could not open codec");
 }

 // Initialize frame
 frame = av_frame_alloc();
 frame->format = AV_PIX_FMT_YUV420P;
 if (!frame)
 {
 throw std::runtime_error("Could not allocate frame");
 }

 inputPacket = av_packet_alloc();
 if (!inputPacket)
 {
 throw std::runtime_error("Could not allocate packet");
 }

 inputFilename_ = inputFilename;
 outputFilenamePrefix_ = outputFilenamePrefix;
 }

 void decode()
 {
 char buf[1024];
 int ret;

 ret = avcodec_send_packet(codecContext, inputPacket);
 if (ret < 0)
 {
 fprintf(stderr, "Error sending a packet for decoding\n");
 exit(1);
 }

 while (ret >= 0)
 {
 ret = avcodec_receive_frame(codecContext, frame);
 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
 return;
 else if (ret < 0)
 {
 fprintf(stderr, "Error during decoding\n");
 exit(1);
 }

 /* the picture is allocated by the decoder. no need to
 free it */
 snprintf(buf, sizeof(buf), "%s-%" PRId64 ".pgm", outputFilenamePrefix_.c_str(), codecContext->frame_num);

 std::cout << "saving frame " << codecContext->frame_num << " " << buf << " colorspace " << frame->colorspace << " pix_fmt " << codecContext->pix_fmt << " w: " << frame->width << " h: " << frame->height << std::endl;

 SwsContext *sws_ctx = NULL;

 sws_ctx = sws_getContext(codecContext->width,
 codecContext->height,
 codecContext->pix_fmt,
 codecContext->width,
 codecContext->height,
 AV_PIX_FMT_RGB24,
 SWS_BICUBIC,
 NULL,
 NULL,
 NULL);

 AVFrame *frame2 = av_frame_alloc();
 int num_bytes = av_image_get_buffer_size(AV_PIX_FMT_RGB24, codecContext->width, codecContext->height, 32);
 uint8_t *frame2_buffer = (uint8_t *)av_malloc(num_bytes * sizeof(uint8_t));
 av_image_fill_arrays(frame2->data, frame->linesize, frame2_buffer, AV_PIX_FMT_RGB24, codecContext->width, codecContext->height, 32);

 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(codecContext->pix_fmt);
 std::cout << "Required:" << std::endl;
 for (int i = 0; i < 4; i++)
 {
 int plane = desc->comp[i].plane;
 std::cout << "plane " << i << " : " << plane << std::endl;
 }
 std::cout << "Present:" << std::endl;
 for (int i = 0; i < AV_NUM_DATA_POINTERS; ++i)
 {
 std::cout << "Frame plane " << i << ": " << static_cast<bool>(frame->data[i]) << " , " << frame->linesize[i] << std::endl;
 }

 sws_scale(sws_ctx, frame->data,
 frame->linesize, 0, codecContext->height,
 frame2->data, frame2->linesize);

 // cv::Mat img(frame2->height, frame2->width, CV_8UC3, frame2->data[0]);
 // cv::imshow("Image", img);

 pgm_save(frame->data[0], frame->linesize[0],
 frame->width, frame->height, buf);
 }
 }

 ~H264Decoder()
 {
 avformat_close_input(&formatContext);
 avformat_free_context(formatContext);
 avcodec_free_context(&codecContext);
 av_frame_free(&frame);
 av_packet_free(&inputPacket);
 }

 void readAndDecode()
 {
 FILE *f;
 uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
 uint8_t *data;
 size_t data_size;
 int ret;
 int eof;
 f = fopen(inputFilename_.c_str(), "rb");
 auto start = std::chrono::high_resolution_clock::now();
 do
 {
 /* read raw data from the input file */
 data_size = fread(inbuf, 1, INBUF_SIZE, f);
 if (ferror(f))
 break;
 eof = !data_size;

 /* use the parser to split the data into frames */
 data = inbuf;
 while (data_size > 0 || eof)
 {
 ret = av_parser_parse2(parser, codecContext, &inputPacket->data, &inputPacket->size,
 data, data_size, AV_NOPTS_VALUE, AV_NOPTS_VALUE, 0);
 if (ret < 0)
 {
 fprintf(stderr, "Error while parsing\n");
 exit(1);
 }
 data += ret;
 data_size -= ret;

 if (inputPacket->size)
 {
 decode();
 }
 else if (eof)
 {
 break;
 }
 }
 } while (!eof);
 auto diff = std::chrono::high_resolution_clock::now() - start;
 std::cout << "Decoded " << codecContext->frame_num << " frames in " << std::chrono::duration_cast(diff).count() << " ms" << std::endl;
 }

private:
 AVFormatContext *formatContext = nullptr;
 AVCodecContext *codecContext = nullptr;
 AVCodecParserContext *parser;
 AVFrame *frame = nullptr;
 AVFrame *frameRgb = nullptr;
 AVPacket *inputPacket = nullptr;
 int videoStreamIndex = -1;
 std::string inputFilename_;
 std::string outputFilenamePrefix_;

 static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize, const char *filename)
 {
 FILE *f = fopen(filename, "wb");
 if (!f)
 {
 std::cout << "Error opening file for saving PGM" << std::endl;
 exit(1);
 }

 fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
 for (int i = 0; i < ysize; i++)
 fwrite(buf + i * wrap, 1, xsize, f);

 fclose(f);
 }
};

int main(int argc, char *argv[])
{
 if (argc < 2)
 {
 std::cout << "Please provide input file name as parameter" << std::endl;
 }

 std::string inputFilename = argv[1];
 std::string outputFilenamePrefix = "C:\\tmp\\output-frame";

 try
 {

 H264Decoder decoder(inputFilename, outputFilenamePrefix);
 decoder.readAndDecode();
 }
 catch (const std::exception &e)
 {
 std::cout << "Error: " << e.what() << std::endl;
 return 1;
 }

 return 0;
}
</bool></chrono></iostream></string></cstdint></cstdio></cstring></iostream>

-
Merge file without data loss using FFmpeg inside of WASM
9 septembre 2023, par DejiEdit : I'm rewriting this entire question


Goal : To reconstruct a video from its pieces/chunks from a network stream inside of an
@ffmpeg/ffmpegworker

Problems :


- 

- Video chunks/pieces which come after the first piece/chunk are reported by
@ffmpeg/ffmpegto have invalid data, as seen in the log below :




{
 "type": "stderr",
 "message": "video-0_chunk-1.part: Invalid data found when processing input"
}


- 

- How would I merge these chunks/pieces to reconstruct the full video using
@ffmpeg/ffmpeg(after solving the first issue above)




My current code situation :


- 

- For merging the video pieces




const constructFile = async (chunks: Uint8Array[], queueId: number) => {
 await Promise.all(
 chunks.map(async (chunk, index) => {
 const chunkFile = `video-${queueId}_chunk-${index}`;
 await ffmpeg.writeFile(chunkFile, chunk);

 // Return information about newly created file
 ffmpeg.exec(["-i", chunkFile]);
 })
 );
};


I'm reading the logs/output for


ffmpeg.exec(['-i', chunkFile])


using


ffmpeg.on('log', (log) => console.log(log))


- 

- For fetching the videos using streams




await useFetch(Capacitor.convertFileSrc(file.path), {
 responseType: "stream",

 onResponse: async ({ response }) => {
 if (response.body) {
 const reader = response.body.getReader();

 while (true) {
 const { done, value } = await reader.read();

 if (done) break;
 file.chunks.push(value);
 }
 reader.releaseLock();
 }
 },
});


Note : file.chunks is linked to a reactive value which is passed to
constructFile()when initialized

These are the logs I get from the code currently above :


chunk-4OF65L5M.js:2710 <suspense> is an experimental feature and its API will likely change.
(index):298 native App.addListener (#25407936)
(index):298 native FilePicker.pickVideos (#25407937)
(index):272 result FilePicker.pickVideos (#25407937)
(index):298 native VideoEditor.thumbnail (#25407938)
(index):272 result VideoEditor.thumbnail (#25407938)
Processing.vue:135 {type: 'stderr', message: 'ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers'}
Processing.vue:135 {type: 'stderr', message: ' built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)'}
Processing.vue:135 {type: 'stderr', message: ' configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass'}
Processing.vue:135 {type: 'stderr', message: ' libavutil 57. 28.100 / 57. 28.100'}
Processing.vue:135 {type: 'stderr', message: ' libavcodec 59. 37.100 / 59. 37.100'}
Processing.vue:135 {type: 'stderr', message: ' libavformat 59. 27.100 / 59. 27.100'}
Processing.vue:135 {type: 'stderr', message: ' libavdevice 59. 7.100 / 59. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libavfilter 8. 44.100 / 8. 44.100'}
Processing.vue:135 {type: 'stderr', message: ' libswscale 6. 7.100 / 6. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libswresample 4. 7.100 / 4. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libpostproc 56. 6.100 / 56. 6.100'}
Processing.vue:135 {type: 'stderr', message: "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video-0_chunk-0':"}
Processing.vue:135 {type: 'stderr', message: ' Metadata:'}
Processing.vue:135 {type: 'stderr', message: ' major_brand : mp42'}
Processing.vue:135 {type: 'stderr', message: ' minor_version : 0'}
Processing.vue:135 {type: 'stderr', message: ' compatible_brands: isommp42'}
Processing.vue:135 {type: 'stderr', message: ' creation_time : 2022-11-29T14:46:32.000000Z'}
Processing.vue:135 {type: 'stderr', message: ' Duration: 00:00:51.50, start: 0.000000, bitrate: 81 kb/s'}
Processing.vue:135 {type: 'stderr', message: ' Stream #0:0[0x1](und): Video: h264 (High) (avc1 …6], 259 kb/s, 30 fps, 30 tbr, 15360 tbn (default)'}
Processing.vue:135 {type: 'stderr', message: ' Metadata:'}
Processing.vue:135 {type: 'stderr', message: ' creation_time : 2022-11-29T14:46:32.000000Z'}
Processing.vue:135 {type: 'stderr', message: ' handler_name : ISO Media file produced by Google Inc. Created on: 11/29/2022.'}
Processing.vue:135 {type: 'stderr', message: ' vendor_id : [0][0][0][0]'}
Processing.vue:135 {type: 'stderr', message: ' Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0…706D), 44100 Hz, stereo, fltp, 127 kb/s (default)'}
Processing.vue:135 {type: 'stderr', message: ' Metadata:'}
Processing.vue:135 {type: 'stderr', message: ' creation_time : 2022-11-29T14:46:32.000000Z'}
Processing.vue:135 {type: 'stderr', message: ' handler_name : ISO Media file produced by Google Inc. Created on: 11/29/2022.'}
Processing.vue:135 {type: 'stderr', message: ' vendor_id : [0][0][0][0]'}
Processing.vue:135 {type: 'stderr', message: 'At least one output file must be specified'}
Processing.vue:135 {type: 'stderr', message: 'Aborted()'}
Processing.vue:135 {type: 'stderr', message: 'ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers'}
Processing.vue:135 {type: 'stderr', message: ' built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)'}
Processing.vue:135 {type: 'stderr', message: ' configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass'}
Processing.vue:135 {type: 'stderr', message: ' libavutil 57. 28.100 / 57. 28.100'}
Processing.vue:135 {type: 'stderr', message: ' libavcodec 59. 37.100 / 59. 37.100'}
Processing.vue:135 {type: 'stderr', message: ' libavformat 59. 27.100 / 59. 27.100'}
Processing.vue:135 {type: 'stderr', message: ' libavdevice 59. 7.100 / 59. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libavfilter 8. 44.100 / 8. 44.100'}
Processing.vue:135 {type: 'stderr', message: ' libswscale 6. 7.100 / 6. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libswresample 4. 7.100 / 4. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libpostproc 56. 6.100 / 56. 6.100'}
Processing.vue:135 {type: 'stderr', message: 'video-0_chunk-1: Invalid data found when processing input'}
Processing.vue:135 {type: 'stderr', message: 'Aborted()'}
Processing.vue:135 {type: 'stderr', message: 'ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers'}
Processing.vue:135 {type: 'stderr', message: ' built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)'}
Processing.vue:135 {type: 'stderr', message: ' configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass'}
Processing.vue:135 {type: 'stderr', message: ' libavutil 57. 28.100 / 57. 28.100'}
Processing.vue:135 {type: 'stderr', message: ' libavcodec 59. 37.100 / 59. 37.100'}
Processing.vue:135 {type: 'stderr', message: ' libavformat 59. 27.100 / 59. 27.100'}
Processing.vue:135 {type: 'stderr', message: ' libavdevice 59. 7.100 / 59. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libavfilter 8. 44.100 / 8. 44.100'}
Processing.vue:135 {type: 'stderr', message: ' libswscale 6. 7.100 / 6. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libswresample 4. 7.100 / 4. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libpostproc 56. 6.100 / 56. 6.100'}
Processing.vue:135 {type: 'stderr', message: 'video-0_chunk-2: Invalid data found when processing input'}
Processing.vue:135 {type: 'stderr', message: 'Aborted()'}
Processing.vue:135 {type: 'stderr', message: 'ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers'}
Processing.vue:135 {type: 'stderr', message: ' built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)'}
Processing.vue:135 {type: 'stderr', message: ' configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass'}
Processing.vue:135 {type: 'stderr', message: ' libavutil 57. 28.100 / 57. 28.100'}
Processing.vue:135 {type: 'stderr', message: ' libavcodec 59. 37.100 / 59. 37.100'}
Processing.vue:135 {type: 'stderr', message: ' libavformat 59. 27.100 / 59. 27.100'}
Processing.vue:135 {type: 'stderr', message: ' libavdevice 59. 7.100 / 59. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libavfilter 8. 44.100 / 8. 44.100'}
Processing.vue:135 {type: 'stderr', message: ' libswscale 6. 7.100 / 6. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libswresample 4. 7.100 / 4. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libpostproc 56. 6.100 / 56. 6.100'}
Processing.vue:135 {type: 'stderr', message: 'video-0_chunk-3: Invalid data found when processing input'}
Processing.vue:135 {type: 'stderr', message: 'Aborted()'}
Processing.vue:135 {type: 'stderr', message: 'ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers'}
Processing.vue:135 {type: 'stderr', message: ' built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)'}
Processing.vue:135 {type: 'stderr', message: ' configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass'}
Processing.vue:135 {type: 'stderr', message: ' libavutil 57. 28.100 / 57. 28.100'}
Processing.vue:135 {type: 'stderr', message: ' libavcodec 59. 37.100 / 59. 37.100'}
Processing.vue:135 {type: 'stderr', message: ' libavformat 59. 27.100 / 59. 27.100'}
Processing.vue:135 {type: 'stderr', message: ' libavdevice 59. 7.100 / 59. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libavfilter 8. 44.100 / 8. 44.100'}
Processing.vue:135 {type: 'stderr', message: ' libswscale 6. 7.100 / 6. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libswresample 4. 7.100 / 4. 7.100'}
Processing.vue:135 {type: 'stderr', message: ' libpostproc 56. 6.100 / 56. 6.100'}
Processing.vue:135 {type: 'stderr', message: 'video-0_chunk-4: Invalid data found when processing input'}
Processing.vue:135 {type: 'stderr', message: 'Aborted()'}
</suspense>

Notes :


- 

- The sections which start with
Processing.vuecome from the logging system I've setup. - The pieces/chunks gotten from the network where stored in exactly the same order in which they came
- If you've seen the old question, the
ReferenceErrorhappens as a result of HMR by Vite
- 

- Similar to this, some logs were repeated twice because I was actively changing some things and the component had to rerun from the start












Summary : If my problem is still not clear, you could provide another way of fetching a large file (video) from a network, loading the file into memory and passing the file data to
@ffmpeg/ffmpegfor further processing

- Video chunks/pieces which come after the first piece/chunk are reported by
Syndiquer tout le site
