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  • extracting video and data streams from MPEG2 TS over RTP in real-time

    10 janvier 2024, par Tejal Barnwal

    I have H264 video stream and KLV meta data encapsulated inside MPEG2 TS container which are sent over an RTP over UDP from a camera.
I intend to do the following :

    


      

    1. Extract both video and data streams from RTP
    2. 


    3. Process video feed using opencv in a seperate thread
    4. 


    5. process klv metadata in a seperate thread
    6. 


    


    My problem what exact arguments should I provide to ffmpeg so as to read h264 video stream and show the images frame by frame using opencv ?

    


    With the help of some previous posts like Simultaneously map video and data streams to one subprocess pipeline in real-time, I was able to get some idea about how could I proceed to procees the stream over RTP.

    


    I started out by using the following script :

    


    #!/usr/bin/env python3
from asyncio import streams
from logging.handlers import QueueListener
import klvdata
import subprocess as sp
import shlex
import threading
import numpy as np
import cv2
import time
from io import BytesIO

# Video reader thread.
def video_reader(pipe):
    cols, rows = 1280, 720  # Assume we know frame size is 1280x720

    counter = 0
    while True:
        print("read image")
        raw_image = pipe.read(cols*rows*3)  # Read raw video frame

        # Break the loop when length is too small
        if len(raw_image) < cols*rows*3:
            break

        if (counter % 10) == 0:
            # Show video frame evey 60 frames
            image = np.frombuffer(raw_image, np.uint8).reshape([rows, cols, 3])
            cv2.imshow('Video', image) # Show video image for testing
            cv2.waitKey(1)
        counter += 1
        print("image showed on window")
        time.sleep(0.25)



# https://github.com/paretech/klvdata/tree/master/klvdata
def bytes_to_int(value, signed=False):
    """Return integer given bytes."""
    return int.from_bytes(bytes(value), byteorder='big', signed=signed)


# Data reader thread (read KLV data).
def data_reader(pipe):
    key_length = 16  # Assume key length is 16 bytes.

    f = open('data.bin', 'wb')  # For testing - store the KLV data to data.bin (binary file)

    while True:
        # https://en.wikipedia.org/wiki/KLV
        # The first few bytes are the Key, much like a key in a standard hash table data structure.
        # Keys can be 1, 2, 4, or 16 bytes in length.
        # Presumably in a separate specification document you would agree on a key length for a given application.
        key = pipe.read(key_length)  # Read the key
        
        if len(key) < key_length:
            break  # Break the loop when length is too small
        f.write(key)  # Write data to binary file for testing

        # https://github.com/paretech/klvdata/tree/master/klvdata
        # Length field
        len_byte = pipe.read(1)

        if len(len_byte) < 1:
            break  # Break the loop when length is too small
        f.write(len_byte)  # Write data to binary file for testing

        byte_length = bytes_to_int(len_byte)

        # https://github.com/paretech/klvdata/tree/master/klvdata                                                
        if byte_length < 128:
            # BER Short Form
            length = byte_length
            ber_len_bytes = b''
        else:
            # BER Long Form
            ber_len = byte_length - 128
            ber_len_bytes = pipe.read(ber_len)

            if len(ber_len_bytes) < ber_len:
                break  # Break the loop when length is too small
            f.write(ber_len_bytes)  # Write ber_len_bytes to binary file for testing

            length = bytes_to_int(ber_len_bytes)

        # Read the value (length bytes)
        value = pipe.read(length)
        if len(value) < length:
            break  # Break the loop when length is too small
        f.write(value)  # Write data to binary file for testing

        klv_data = key + len_byte + ber_len_bytes + value  # Concatenate key length and data
        klv_data_as_bytes_io = BytesIO(klv_data)  # Wrap klv_data with BytesIO (before parsing)

        # Parse the KLV data
        for packet in klvdata.StreamParser(klv_data_as_bytes_io): 
            metadata = packet.MetadataList()
            for key, value in metadata.items():
                print(key, value)
                
            print("\n") # New line

# Execute FFmpeg as sub-process
# Map the video to stderr and map the data to stdout
process = sp.Popen(shlex.split('ffmpeg -hide_banner -loglevel quiet '                        # Set loglevel to quiet for disabling the prints ot stderr
                               '-i "rtp://192.168.0.141:11024" '                                        # Input video "Day Flight.mpg"
                               '-map 0:v -c:v rawvideo -pix_fmt bgr24 -f:v rawvideo pipe:2 ' # rawvideo format is mapped to stderr pipe (raw video codec with bgr24 pixel format)
                               '-map 0:d -c copy -copy_unknown -f:d data pipe:1 '            # Copy the data without ddecoding.
                               '-report'),                                                   # Create a log file (because we can't the statuses that are usually printed to stderr).
                                stdout=sp.PIPE, stderr=sp.PIPE)


# Start video reader thread (pass stderr pipe as argument).
video_thread = threading.Thread(target=video_reader, args=(process.stderr,))
video_thread.start()

# Start data reader thread (pass stdout pipe as argument).
data_thread = threading.Thread(target=data_reader, args=(process.stdout,))
data_thread.start()


# Wait for threads (and process) to finish.
video_thread.join()
data_thread.join()
process.wait()



    


    With the above script, I was facing two issues :

    


      

    1. The second thread resulted in an attribute error
    2. 


    


    Exception in thread Thread-2:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "video_data_extraction.py", line 97, in data_reader
    print(packet.MetadataList())
AttributeError: 'UnknownElement' object has no attribute 'MetadataList'



    


      

    1. With this though I continuously able to see following output on the terminal regarding reading the images
    2. 


    


    read image
image showed on window
read image
image showed on window
read image
image showed on window
read image
image showed on window
read image
image showed on window
read image
image showed on window


    


    The imshow windows wasnt updating properly ! It seemed stuck after a few frames.

    


    Further diving into the lane with the help of following command, I concluded that the video stream that I am reading has H264 encoding

    


    ffprobe -i rtp://192.168.0.141:11024 -show_streams -show_formats


    


    Output of the above command :

    


    ffprobe version 4.2.7-0ubuntu0.1 Copyright (c) 2007-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --arch=arm64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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
[rtp @ 0xaaaac81ecce0] PES packet size mismatch
    Last message repeated 62 times
[NULL @ 0xaaaac81f09b0] non-existing PPS 0 referenced
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[rtp @ 0xaaaac81ecce0] PES packet size mismatch
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[rtp @ 0xaaaac81ecce0] PES packet size mismatch
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0xaaaac81f09b0] decode_slice_header error
[h264 @ 0xaaaac81f09b0] no frame!
[rtp @ 0xaaaac81ecce0] PES packet size mismatch
    Last message repeated 187 times
Input #0, rtp, from 'rtp://192.168.0.141:11024':
  Duration: N/A, start: 1317.040656, bitrate: N/A
  Program 1 
    Stream #0:1: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720, 25 fps, 25 tbr, 90k tbn
    Stream #0:0: Data: klv (KLVA / 0x41564C4B)
Unsupported codec with id 100356 for input stream 0
[STREAM]
index=0
codec_name=klv
codec_long_name=SMPTE 336M Key-Length-Value (KLV) metadata
profile=unknown
codec_type=data
codec_tag_string=KLVA
codec_tag=0x41564c4b
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/90000
start_pts=118533659
start_time=1317.040656
duration_ts=N/A
duration=N/A
bit_rate=N/A
max_bit_rate=N/A
bits_per_raw_sample=N/A
nb_frames=N/A
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
[/STREAM]
[STREAM]
index=1
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=Constrained Baseline
codec_type=video
codec_time_base=1/50
codec_tag_string=[27][0][0][0]
codec_tag=0x001b
width=1280
height=720
coded_width=1280
coded_height=720
has_b_frames=0
sample_aspect_ratio=N/A
display_aspect_ratio=N/A
pix_fmt=yuv420p
level=31
color_range=unknown
color_space=unknown
color_transfer=unknown
color_primaries=unknown
chroma_location=left
field_order=progressive
timecode=N/A
refs=1
is_avc=false
nal_length_size=0
id=N/A
r_frame_rate=25/1
avg_frame_rate=25/1
time_base=1/90000
start_pts=118533659
start_time=1317.040656
duration_ts=N/A
duration=N/A
bit_rate=N/A
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=N/A
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
[/STREAM]
[FORMAT]
filename=rtp://192.168.0.141:11024
nb_streams=2
nb_programs=1
format_name=rtp
format_long_name=RTP input
start_time=1317.040656
duration=N/A
size=N/A
bit_rate=N/A
probe_score=100
[/FORMAT]


    


    Further, in the log output, I see a lot of statements in regard to missed packets and PES packet mismatch

    


    [rtp @ 0xaaaaf31896c0] max delay reached. need to consume packet
[rtp @ 0xaaaaf31896c0] RTP: missed 98 packets
[rtp @ 0xaaaaf31896c0] Continuity check failed for pid 40 expected 14 got 10
[rtp @ 0xaaaaf31896c0] PES packet size mismatch
rtp://192.168.0.141:11024: corrupt input packet in stream 0
frame=  124 fps=2.6 q=-0.0 size=  334800kB time=00:00:05.32 bitrate=515406.0kbits/s dup=97 drop=0 speed=0.111x 


    


    What arguments do I provide to ffmpeg and in what order because my stream 0 is metadata and stream 1 is video so as to display image frame by frame with opencv ?
I would be grateful for any help that you could provide.

    


    Further, I also have a query regarding how does ffmpeg know to that it has to first convert the rtp packets into mpeg2 TS packets before segregating video stream and data stream ?

    


  • Error trying to install FFmpeg on Oracle Cloud VM Linux [closed]

    14 mai 2022, par lucasrvimieiro

    I'm trying to host a discord bot using Oracle Cloud but I need to install the FFmpeg extension for it to be able to play music. I have absolutely no experience with Linux at all but I was able to run the bot normally after a few tutorials. Everything is working fine except for the FFmpeg installation.

    


    I already tried following these guides :
https://computingforgeeks.com/how-to-install-ffmpeg-on-centos-rhel-8/
https://techviewleo.com/install-ffmpeg-on-rocky-almalinux-oracle-linux/

    


    However I keep getting the error :

    


    


    Errors during downloading metadata for repository 'nux-dextop' :

    


    


    


    when executing :

    


    sudo dnf -y install ffmpeg


    


    I cannot find any solutions online. Is it even possible to install FFmpeg there ? The VM is running Oracle-Linux-8.5-aarch64-2022.04.04-0. I'm using Bitvise SSH Client to connect to the terminal.

    


  • Merge file without data loss using FFmpeg inside of WASM

    9 septembre 2023, par Deji

    Edit : I'm rewriting this entire question

    


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

    


    Problems :

    


      

    1. Video chunks/pieces which come after the first piece/chunk are reported by @ffmpeg/ffmpeg to have invalid data, as seen in the log below :
    2. 


    


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


    


      

    1. How would I merge these chunks/pieces to reconstruct the full video using @ffmpeg/ffmpeg (after solving the first issue above)
    2. 


    


    My current code situation :

    


      

    1. For merging the video pieces
    2. 


    


    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))


    


      

    1. For fetching the videos using streams
    2. 


    


    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.&#xA;(index):298 native App.addListener (#25407936)&#xA;(index):298 native FilePicker.pickVideos (#25407937)&#xA;(index):272 result FilePicker.pickVideos (#25407937)&#xA;(index):298 native VideoEditor.thumbnail (#25407938)&#xA;(index):272 result VideoEditor.thumbnail (#25407938)&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavutil      57. 28.100 / 57. 28.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavcodec     59. 37.100 / 59. 37.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavformat    59. 27.100 / 59. 27.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavdevice    59.  7.100 / 59.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavfilter     8. 44.100 /  8. 44.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswscale      6.  7.100 /  6.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswresample   4.  7.100 /  4.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libpostproc    56.  6.100 / 56.  6.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;video-0_chunk-0&#x27;:"}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  Metadata:&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    major_brand     : mp42&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    minor_version   : 0&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    compatible_brands: isommp42&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    creation_time   : 2022-11-29T14:46:32.000000Z&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  Duration: 00:00:51.50, start: 0.000000, bitrate: 81 kb/s&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  Stream #0:0[0x1](und): Video: h264 (High) (avc1 …6], 259 kb/s, 30 fps, 30 tbr, 15360 tbn (default)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    Metadata:&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      creation_time   : 2022-11-29T14:46:32.000000Z&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      handler_name    : ISO Media file produced by Google Inc. Created on: 11/29/2022.&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      vendor_id       : [0][0][0][0]&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0…706D), 44100 Hz, stereo, fltp, 127 kb/s (default)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;    Metadata:&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      creation_time   : 2022-11-29T14:46:32.000000Z&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      handler_name    : ISO Media file produced by Google Inc. Created on: 11/29/2022.&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;      vendor_id       : [0][0][0][0]&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;At least one output file must be specified&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;Aborted()&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavutil      57. 28.100 / 57. 28.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavcodec     59. 37.100 / 59. 37.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavformat    59. 27.100 / 59. 27.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavdevice    59.  7.100 / 59.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavfilter     8. 44.100 /  8. 44.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswscale      6.  7.100 /  6.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswresample   4.  7.100 /  4.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libpostproc    56.  6.100 / 56.  6.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;video-0_chunk-1: Invalid data found when processing input&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;Aborted()&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavutil      57. 28.100 / 57. 28.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavcodec     59. 37.100 / 59. 37.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavformat    59. 27.100 / 59. 27.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavdevice    59.  7.100 / 59.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavfilter     8. 44.100 /  8. 44.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswscale      6.  7.100 /  6.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswresample   4.  7.100 /  4.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libpostproc    56.  6.100 / 56.  6.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;video-0_chunk-2: Invalid data found when processing input&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;Aborted()&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavutil      57. 28.100 / 57. 28.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavcodec     59. 37.100 / 59. 37.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavformat    59. 27.100 / 59. 27.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavdevice    59.  7.100 / 59.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavfilter     8. 44.100 /  8. 44.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswscale      6.  7.100 /  6.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswresample   4.  7.100 /  4.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libpostproc    56.  6.100 / 56.  6.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;video-0_chunk-3: Invalid data found when processing input&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;Aborted()&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  built with emcc (Emscripten gcc/clang-like repla…3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  configuration: --target-os=none --arch=x86_32 --…e-libfreetype --enable-libfribidi --enable-libass&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavutil      57. 28.100 / 57. 28.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavcodec     59. 37.100 / 59. 37.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavformat    59. 27.100 / 59. 27.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavdevice    59.  7.100 / 59.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libavfilter     8. 44.100 /  8. 44.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswscale      6.  7.100 /  6.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libswresample   4.  7.100 /  4.  7.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;  libpostproc    56.  6.100 / 56.  6.100&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;video-0_chunk-4: Invalid data found when processing input&#x27;}&#xA;Processing.vue:135 {type: &#x27;stderr&#x27;, message: &#x27;Aborted()&#x27;}&#xA;</suspense>

    &#xA;

    Notes :

    &#xA;

      &#xA;
    1. The sections which start with Processing.vue come from the logging system I've setup.
    2. &#xA;

    3. The pieces/chunks gotten from the network where stored in exactly the same order in which they came
    4. &#xA;

    5. If you've seen the old question, the ReferenceError happens as a result of HMR by Vite&#xA;
        &#xA;
      1. Similar to this, some logs were repeated twice because I was actively changing some things and the component had to rerun from the start
      2. &#xA;

      &#xA;

    6. &#xA;

    &#xA;

    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/ffmpeg for further processing

    &#xA;