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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Configuration spécifique d’Apache
4 février 2011, parModules spécifiques
Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
Création d’un (...) -
Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...)
Sur d’autres sites (6467)
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What's the most desireable way to capture system display and audio in the form of individual encoded audio and video packets in go (language) ? [closed]
11 janvier 2023, par Tiger YangQuestion (read the context below first) :


For those of you familiar with the capabilities of go, Is there a better way to go about all this ? Since ffmpeg is so ubiquitous, I'm sure it's been optomized to perfection, but what's the best way to capture system display and audio in the form of individual encoded audio and video packets in go (language), so that they can be then sent via webtransport-go ? I wish for it to prioritize efficiency and low latency, and ideally capture and encode the framebuffer directly like ffmpeg does.


Thanks ! I have many other questions about this, but I think it's best to ask as I go.


Context and what I've done so far :


I'm writing a remote desktop software for my personal use because of grievances with current solutions out there. At the moment, it consists of a web app that uses the webtransport API to send input datagrams and receive AV packets on two dedicated unidirectional streams, and the webcodecs API to decode these packets. On the serverside, I originally planned to use python with the aioquic library as a webtransport server. Upon connection and authentication, the server would start ffmpeg as a subprocess with this command :


ffmpeg -init_hw_device d3d11va -filter_complex ddagrab=video_size=1920x1080:framerate=60 -vcodec hevc_nvenc -tune ll -preset p7 -spatial_aq 1 -temporal_aq 1 -forced-idr 1 -rc cbr -b:v 400K -no-scenecut 1 -g 216000 -f hevc -


What I really appreciate about this is that it uses windows' desktop duplication API to copy the framebuffer of my GPU and hand that directly to the on-die hardware encoder with zero round trips to the CPU. I think it's about as efficient and elegant a solution as I can manage. It then outputs the encoded stream to the stdout, which python can read and send to the client.


As for the audio, there is another ffmpeg instance :


ffmpeg -f dshow -channels 2 -sample_rate 48000 -sample_size 16 -audio_buffer_size 15 -i audio="RD Audio (High Definition Audio Device)" -acodec libopus -vbr on -application audio -mapping_family 0 -apply_phase_inv true -b:a 25K -fec false -packet_loss 0 -map 0 -f data -


which listens to a physical loopback interface, which is literally just a short wire bridging the front panel headphone and microphone jacks (I'm aware of the quality loss of converting to analog and back, but the audio is then crushed down to 25kbps so it's fine) ()


Unfortunately, aioquic was not easy to work with IMO, and I found webtransport-go https://github.com/adriancable/webtransport-go, which was a hell of a lot better in both simplicity and documentation. However, now I'm dealing with a whole new language, and I wanna ask : (above)


EDIT : Here's the code for my server so far :




package main

import (
 "bytes"
 "context"
 "fmt"
 "log"
 "net/http"
 "os/exec"
 "time"

 "github.com/adriancable/webtransport-go"
)

func warn(str string) {
 fmt.Printf("\n===== WARNING ===================================================================================================\n %s\n=================================================================================================================\n", str)
}

func main() {

 password := []byte("abc")

 videoString := []string{
 "ffmpeg",
 "-init_hw_device", "d3d11va",
 "-filter_complex", "ddagrab=video_size=1920x1080:framerate=60",
 "-vcodec", "hevc_nvenc",
 "-tune", "ll",
 "-preset", "p7",
 "-spatial_aq", "1",
 "-temporal_aq", "1",
 "-forced-idr", "1",
 "-rc", "cbr",
 "-b:v", "500K",
 "-no-scenecut", "1",
 "-g", "216000",
 "-f", "hevc", "-",
 }

 audioString := []string{
 "ffmpeg",
 "-f", "dshow",
 "-channels", "2",
 "-sample_rate", "48000",
 "-sample_size", "16",
 "-audio_buffer_size", "15",
 "-i", "audio=RD Audio (High Definition Audio Device)",
 "-acodec", "libopus",
 "-mapping_family", "0",
 "-b:a", "25K",
 "-map", "0",
 "-f", "data", "-",
 }

 connected := false

 http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
 session := request.Body.(*webtransport.Session)

 session.AcceptSession()
 fmt.Println("\nAccepted incoming WebTransport connection.")
 fmt.Println("Awaiting authentication...")

 authData, err := session.ReceiveMessage(session.Context()) // Waits here till first datagram
 if err != nil { // if client closes connection before sending anything
 fmt.Println("\nConnection closed:", err)
 return
 }

 if len(authData) >= 2 && bytes.Equal(authData[2:], password) {
 if connected {
 session.CloseSession()
 warn("Client has authenticated, but a session is already taking place! Connection closed.")
 return
 } else {
 connected = true
 fmt.Println("Client has authenticated!\n")
 }
 } else {
 session.CloseSession()
 warn("Client has failed authentication! Connection closed. (" + string(authData[2:]) + ")")
 return
 }

 videoStream, _ := session.OpenUniStreamSync(session.Context())

 videoCmd := exec.Command(videoString[0], videoString[1:]...)
 go func() {
 videoOut, _ := videoCmd.StdoutPipe()
 videoCmd.Start()

 buffer := make([]byte, 15000)
 for {
 len, err := videoOut.Read(buffer)
 if err != nil {
 break
 }
 if len > 0 {
 videoStream.Write(buffer[:len])
 }
 }
 }()

 time.Sleep(50 * time.Millisecond)

 audioStream, err := session.OpenUniStreamSync(session.Context())

 audioCmd := exec.Command(audioString[0], audioString[1:]...)
 go func() {
 audioOut, _ := audioCmd.StdoutPipe()
 audioCmd.Start()

 buffer := make([]byte, 15000)
 for {
 len, err := audioOut.Read(buffer)
 if err != nil {
 break
 }
 if len > 0 {
 audioStream.Write(buffer[:len])
 }
 }
 }()

 for {
 data, err := session.ReceiveMessage(session.Context())
 if err != nil {
 videoCmd.Process.Kill()
 audioCmd.Process.Kill()

 connected = false

 fmt.Println("\nConnection closed:", err)
 break
 }

 if len(data) == 0 {

 } else if data[0] == byte(0) {
 fmt.Printf("Received mouse datagram: %s\n", data)
 }
 }

 })

 server := &webtransport.Server{
 ListenAddr: ":1024",
 TLSCert: webtransport.CertFile{Path: "SSL/fullchain.pem"},
 TLSKey: webtransport.CertFile{Path: "SSL/privkey.pem"},
 QuicConfig: &webtransport.QuicConfig{
 KeepAlive: false,
 MaxIdleTimeout: 3 * time.Second,
 },
 }

 fmt.Println("Launching WebTransport server at", server.ListenAddr)
 ctx, cancel := context.WithCancel(context.Background())
 if err := server.Run(ctx); err != nil {
 log.Fatal(err)
 cancel()
 }

}






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How to get snapshot from video memorystream or byte[] using FFmpegCore instead of file path ?
12 juillet 2024, par Akash KadiaI am trying to get snapshots from video data that can be in a MemoryStream OR Byte[] but not located on physical file path. FFMpegCore provide option to use Arguments with PipeSource but not sure how to use it. I have updated code for taking snapshot from Stream as below but it gives


public static async Task<bitmap> SnapshotAsync(Stream input, IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int? streamIndex = null, int inputFileIndex = 0)
 {
 input.Seek(0, SeekOrigin.Begin);
 FFMpegCore.Pipes.StreamPipeSource streamPipeSource = new FFMpegCore.Pipes.StreamPipeSource(input);
 var (arguments, outputOptions) = BuildSnapshotArguments(streamPipeSource, source, size, captureTime, streamIndex, inputFileIndex);
 using var ms = new MemoryStream();

 await arguments
 .OutputToPipe(new StreamPipeSink(ms), options => outputOptions(options
 .ForceFormat("rawvideo")))
 .ProcessAsynchronously().ConfigureAwait(false);

 ms.Position = 0;
 return new Bitmap(ms);
 }

 private static (FFMpegArguments, Action<ffmpegargumentoptions> outputOptions) BuildSnapshotArguments(
 IPipeSource input,
 IMediaAnalysis source,
 Size? size = null,
 TimeSpan? captureTime = null,
 int? streamIndex = null,
 int inputFileIndex = 0)
 {
 captureTime ??= TimeSpan.FromSeconds(source.Duration.TotalSeconds / 3);
 size = PrepareSnapshotSize(source, size);
 streamIndex ??= source.PrimaryVideoStream?.Index
 ?? source.VideoStreams.FirstOrDefault()?.Index
 ?? 0;

 return (FFMpegArguments
 .FromPipeInput(input, options => options
 .Seek(captureTime)),
 options => options
 .SelectStream((int)streamIndex, inputFileIndex)
 .WithVideoCodec(VideoCodec.Png)
 .WithFrameOutputCount(1)
 .Resize(size));
 }
 
 private static Size? PrepareSnapshotSize(IMediaAnalysis source, Size? wantedSize)
 {
 if (wantedSize == null || (wantedSize.Value.Height <= 0 && wantedSize.Value.Width <= 0) || source.PrimaryVideoStream == null)
 return null;

 var currentSize = new Size(source.PrimaryVideoStream.Width, source.PrimaryVideoStream.Height);
 if (source.PrimaryVideoStream.Rotation == 90 || source.PrimaryVideoStream.Rotation == 180)
 currentSize = new Size(source.PrimaryVideoStream.Height, source.PrimaryVideoStream.Width);

 if (wantedSize.Value.Width != currentSize.Width || wantedSize.Value.Height != currentSize.Height)
 {
 if (wantedSize.Value.Width <= 0 && wantedSize.Value.Height > 0)
 {
 var ratio = (double)wantedSize.Value.Height / currentSize.Height;
 return new Size((int)(currentSize.Width * ratio), (int)(currentSize.Height * ratio));
 }
 if (wantedSize.Value.Height <= 0 && wantedSize.Value.Width > 0)
 {
 var ratio = (double)wantedSize.Value.Width / currentSize.Width;
 return new Size((int)(currentSize.Width * ratio), (int)(currentSize.Height * ratio));
 }
 return wantedSize;
 }

 return null;
 }
</ffmpegargumentoptions></bitmap>

it is giving error under SnapShotAsync function at this line


await arguments
 .OutputToPipe(new StreamPipeSink(ms), options => outputOptions(options
 .ForceFormat("rawvideo")))
 .ProcessAsynchronously().ConfigureAwait(false);


here is full error message




ffmpeg exited with non-zero exit-code (1 - ffmpeg version 2021-04-04-git-b1b7cc698b-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-librist —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libglslang —enable-vulkan —enable-opencl —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint
libavutil 56. 72.100 / 56. 72.100
libavcodec 58.135.100 / 58.135.100
libavformat 58. 77.100 / 58. 77.100
libavdevice 58. 14.100 / 58. 14.100
libavfilter 7.111.100 / 7.111.100
libswscale 5. 10.100 / 5. 10.100
libswresample 3. 10.100 / 3. 10.100
libpostproc 55. 10.100 / 55. 10.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001c78845f040] Could not find codec parameters for stream 0 (Video : h264 (avc1 / 0x31637661), none, 1280x720, 4716 kb/s) : unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\.\pipe\FFMpegCore_4599336d-fbf8-430e-ab89-19082c7d3693' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands : mp41isom
creation_time : 2021-11-17T11:53:33.000000Z
Duration : 00:00:03.62, start : 0.000000, bitrate : N/A
Stream #0:0(und) : Video : h264 (avc1 / 0x31637661), none, 1280x720, 4716 kb/s, 15.20 fps, 15.08 tbr, 30k tbn, 60k tbc (default)
Metadata :
creation_time : 2021-11-17T11:53:33.000000Z
handler_name : VideoHandler
vendor_id : [0][0][0][0]
encoder : AVC Coding
Stream #0:1(und) : Audio : aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 170 kb/s (default)
Metadata :
creation_time : 2021-11-17T11:53:33.000000Z
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream mapping :
Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
\.\pipe\FFMpegCore_4599336d-fbf8-430e-ab89-19082c7d3693 : Invalid argument
Cannot determine format of input stream 0:0 after EOF
Error marking filters as finished
Conversion failed !)




I am just passing a video file


using (Stream fms = File.OpenRead(txtVideoPath.Text))
 {
 fms.Seek(0, SeekOrigin.Begin);
 using (MemoryStream vms = new MemoryStream())
 {
 fms.CopyTo(vms);
 vms.Seek(0, SeekOrigin.Begin);
--pass vms to snapshot function
 ....
 }
 }


is there any way to get snapshot from stream without storing file physically ?


-
FFmpeg Video Overlay Function Not Working (Flutter)
30 août 2022, par Dennis AshfordI am simply trying to get a watermarked video from the Flutter FFmpeg package and cannot seem to get it to work. For right now, I am downloading the video from Firebase, storing it in cache, overlaying a watermark image using the Flutter
FFmpeg Kitpackage. The original video file, image file, and output file are being created properly. However, the overlay function is not working properly. Can someone help me with theFFmpegKit.executefunction string ? I am not seeing any obvious errors in the function, but it isn't working properly. I tried writing as a new File andasBytesbut neither worked.

Edit : I want to take the
originalVideoand overlay it with thewatermarkimage with the expected outcome being a new file that contains the new overlayed video. Not concerned with where the overlay is yet.

Pubspec.yaml


ffmpeg_kit_flutter: ^4.5.1


The function is :


import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';

Future<file> waterMarkVideo(String videoPath, String watermarkPath) async {
 //these calls are to load the video into temporary directory
 final response = await http.get(Uri.parse(videoPath));
 final originalVideo = File ('${(await getTemporaryDirectory()).path}/video.mp4');
 await originalVideo.create(recursive: true);
 await originalVideo.writeAsBytes(response.bodyBytes);
 print('video path' + originalVideo.path);

 //this grabs the watermark image from assets and decodes it
 final byteData = await rootBundle.load(watermarkPath);
 final watermark = File('${(await getTemporaryDirectory()).path}/image.png');
 await watermark.create(recursive: true);
 await watermark.writeAsBytes(byteData.buffer.asUint8List(byteData.offsetInBytes, byteData.lengthInBytes));
 print('watermark path' + watermark.path);

 //this creates temporary directory for new watermarked video
 var tempDir = await getTemporaryDirectory();
 final newVideoPath = '${tempDir.path}/${DateTime.now().microsecondsSinceEpoch}result.mp4';
 final videoFile = await File(newVideoPath).create();

//overlaying video using FFmpegkit where I need some help
 await FFmpegKit.executeAsync("-i $originalVideo -i $watermark -filter_complex 'overlay=(W-w)/2:(H-h)/2' $videoFile")
 .then((session) async {
 final state = FFmpegKitConfig.sessionStateToString(await session.getState());
 final returnCode = await session.getReturnCode();
 final failStackTrace = await session.getFailStackTrace();
 final output = await session.getOutput();
 print('FFmpeg process exited with state ${state} and rs ${returnCode}.If failed ${failStackTrace}');
 print('Last output $output');
 } );
 print('new video path' + newVideoPath);
 Uint8List videoByteData = await videoFile.readAsBytes();
 return videoFile.writeAsBytes(videoByteData);
}
</file>

The output for the function above is


flutter: video path/Users/dennisashford/Library/Developer/CoreSimulator/Devices/FBFB4D51-EC31-47DF-8FE0-66B114806EA4/data/Containers/Data/Application/0EA3BB35-D364-4B98-A104-15CDB17AAD54/Library/Caches/video.mp4
flutter: watermark path/Users/dennisashford/Library/Developer/CoreSimulator/Devices/FBFB4D51-EC31-47DF-8FE0-66B114806EA4/data/Containers/Data/Application/0EA3BB35-D364-4B98-A104-15CDB17AAD54/Library/Caches/image.png
ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
 built with Apple clang version 13.0.0 (clang-1300.0.29.30)
 configuration: --cross-prefix=x86_64-ios-darwin- --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk --prefix=/Users/taner/Projects/ffmpeg-kit/prebuilt/apple-ios-x86_64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=x86_64 --cpu=x86_64 --target-os=darwin --disable-neon --disable-asm --ar=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar --cc=clang --cxx=clang++ --as='clang -arch x86_64 -target x86_64-apple-ios12.1-simulator -march=x86-64 -msse4.2 -mpopcnt -m64 -DFFMPEG_KIT_X86_64 -Wno-unused-function -Wno-deprecated-declarations -fstrict-aliasing -DIOS -DFFMPEG_KIT_BUILD_DATE=20220114 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk -O2 -mios-simulator-version-min=12.1 -I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/include' --ranlib=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib --strip=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip --nm=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm --extra-ldflags='-mios-simulator-version-min=12.1' --disable-autodetect --enable-cross-compile --enable-pic --enable-inline-asm --enable-optimizations --enable-swscale --enable-shared --disable-static --install-name-dir='@rpath' --enable-pthreads --disable-v4l2-m2m --disable-outdev=v4l2 --disable-outdev=fbdev --disable-indev=v4l2 --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-gmp --enable-gnutls --disable-sdl2 --disable-openssl --enable-zlib --enable-audiotoolbox --disable-outdev=audiotoolbox --enable-bzlib --enable-videotoolbox --enable-avfoundation --enable-iconv --disable-coreimage --disable-appkit --disable-opencl --disable-opengl
 libavutil 57. 13.100 / 57. 13.100
 libavcodec 59. 15.102 / 59. 15.102
 libavformat 59. 10.100 / 59. 10.100
 libavdevice 59. 1.100 / 59. 1.100
 libavfilter 8. 21.100 / 8. 21.100
 libswscale 6. 1.102 / 6. 1.102
 libswresample 4. 0.100 / 4. 0.100
File:: Protocol not found
Did you mean file:File:?
flutter: FFmpeg process exited with state RUNNING and rs 1.If failed null
flutter: Last output ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
flutter: built with Apple clang version 13.0.0 (clang-1300.0.29.30)
flutter: configuration: --cross-prefix=x86_64-ios-darwin- --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk --prefix=/Users/taner/Projects/ffmpeg-kit/prebuilt/apple-ios-x86_64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=x86_64 --cpu=x86_64 --target-os=darwin --disable-neon --disable-asm --ar=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar --cc=clang --cxx=clang++ --as='clang -arch x86_64 -target x86_64-apple-ios12.1-simulator -march=x86-64 -msse4.2 -mpopcnt -m64 -DFFMPEG_KIT_X86_64 -Wno-unused-function -Wno-deprecated-declarations -fstrict-aliasing -DIOS -DFFMPEG_KIT_BUILD_DATE=20220114 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk -O2 -mios-simulator-version-min=12.1 -I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.2.sdk/usr/include' --ranlib=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib --strip=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip --nm=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm --extra-ldflags='-mios-simulator-version-min=12.1' --disable-autodetect --enable-cross-compile --enable-pic --enable-inline-asm --enable-optimizations --enable-swscale --enable-shared --disable-static --install-name-dir='@rpath' --enable-pthreads --disable-v4l2-m2m --disable-outdev=v4l2 --disable-outdev=fbdev --disable-indev=v4l2 --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-gmp --enable-gnutls --disable-sdl2 --disable-openssl --enable-zlib --enable-audiotoolbox --disable-outdev=audiotoolbox --enable-bzlib --enable-videotoolbox --enable-avfoundation --enable-iconv --disable-coreimage --disable-appkit --disable-opencl --disable-opengl
flutter: libavutil 57. 13.100 / 57. 13.100
flutter: libavcodec 59. 15.102 / 59. 15.102
flutter: libavformat 59. 10.100 / 59. 10.100
flutter: libavdevice 59. 1.100 / 59. 1.100
flutter: libavfilter 8. 21.100 / 8. 21.100
flutter: libswscale 6. 1.102 / 6. 1.102
flutter: libswresample 4. 0.100 / 4. 0.100
flutter: File:: Protocol not found
flutter: Did you mean file:File:?
flutter: 
flutter: new video path/Users/dennisashford/Library/Developer/CoreSimulator/Devices/FBFB4D51-EC31-47DF-8FE0-66B114806EA4/data/Containers/Data/Application/0EA3BB35-D364-4B98-A104-15CDB17AAD54/Library/Caches/1661892011213545result.mp4


Update : So I built the code on a physical device and was able to get a little more information for what may be the problem. The error may be coming from


File:: Protocol not found
Did you mean file:File:?


Complete logs from the physical device are given below


flutter: video path/var/mobile/Containers/Data/Application/70EA92CD-DF5D-440E-BBE1-C130BC7F0CC7/Library/Caches/video.mp4
flutter: watermark path/var/mobile/Containers/Data/Application/70EA92CD-DF5D-440E-BBE1-C130BC7F0CC7/Library/Caches/image.png
ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
 built with Apple clang version 13.0.0 (clang-1300.0.29.30)
 configuration: --cross-prefix=arm64-ios-darwin- --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk --prefix=/Users/taner/Projects/ffmpeg-kit/prebuilt/apple-ios-arm64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8 --target-os=darwin --enable-neon --enable-asm --ar=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar --cc=clang --cxx=clang++ --as='/Users/taner/Projects/ffmpeg-kit/.tmp/gas-preprocessor.pl -arch aarch64 -- clang -arch arm64 -target arm64-apple-ios12.1 -march=armv8-a+crc+crypto -mcpu=generic -DFFMPEG_KIT_ARM64 -Wno-unused-function -Wno-deprecated-declarations -fstrict-aliasing -fembed-bitcode -DIOS -DFFMPEG_KIT_BUILD_DATE=20220114 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk -Oz -miphoneos-version-min=12.1 -I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk/usr/include' --ranlib=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib --strip=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip --nm=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm --extra-ldflags='-miphoneos-version-min=12.1' --disable-autodetect --enable-cross-compile --enable-pic --enable-inline-asm --enable-optimizations --enable-swscale --enable-shared --disable-static --install-name-dir='@rpath' --enable-pthreads --disable-v4l2-m2m --disable-outdev=v4l2 --disable-outdev=fbdev --disable-indev=v4l2 --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-gmp --enable-gnutls --disable-sdl2 --disable-openssl --enable-zlib --enable-audiotoolbox --disable-outdev=audiotoolbox --enable-bzlib --enable-videotoolbox --enable-avfoundation --enable-iconv --disable-coreimage --disable-appkit --disable-opencl --disable-opengl
 libavutil 57. 13.100 / 57. 13.100
 libavcodec 59. 15.102 / 59. 15.102
 libavformat 59. 10.100 / 59. 10.100
 libavdevice 59. 1.100 / 59. 1.100
 libavfilter 8. 21.100 / 8. 21.100
 libswscale 6. 1.102 / 6. 1.102
 libswresample 4. 0.100 / 4. 0.100
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flutter: FFmpeg process exited with state RUNNING and rs 1.If failed null
flutter: Last output ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
 built with Apple clang version 13.0.0 (clang-1300.0.29.30)
 configuration: --cross-prefix=arm64-ios-darwin- --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk --prefix=/Users/taner/Projects/ffmpeg-kit/prebuilt/apple-ios-arm64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8 --target-os=darwin --enable-neon --enable-asm --ar=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar --cc=clang --cxx=clang++ --as='/Users/taner/Projects/ffmpeg-kit/.tmp/gas-preprocessor.pl -arch aarch64 -- clang -arch arm64 -target arm64-apple-ios12.1 -march=armv8-a+crc+crypto -mcpu=generic -DFFMPEG_KIT_ARM64 -Wno-unused-function -Wno-deprecated-declarations -fstrict-aliasing -fembed-bitcode -DIOS -DFFMPEG_KIT_BUILD_DATE=20220114 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk -Oz -miphoneos-version-min=12.1 -I/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS15.2.sdk/usr/include' --ranlib=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib --strip=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip --nm=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm --extra-ldflags='-miphoneos-version-min=12.1' --disable-autodetect --enable-cross-compile --enable-pic --enable-inline-asm --enable-optimizations --enable-swscale --enable-shared --disable-static --install-name-dir='@rpath' --enable-pthreads --disable-v4l2-m2m --disable-outdev=v4l2 --disable-outdev=fbdev --disable-indev=v4l2 --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-gmp --enable-gnutls --disable-sdl2 --disable-openssl --enable-zlib --enable-audiotoolbox --disable-outdev=audiotoolbox --enable-bzlib --enable-videotoolbox --enable-avfoundation --enable-iconv --disable-coreimage --disable-appkit --disable-opencl --disable-opengl
 libavutil 57. 13.100 / 57. 13.100
 libavcodec 59. 15.102 / 59. 15.102
 libavformat 59. 10.100 / 59. 10.100
 libavdevice 59. 1.100 / 59. 1.100
 libavfilter 8. 21.100 / 8. 21.100
 libswscale 6. 1.102 / 6. 1.102
 libswresample 4. 0.100 / 4. 0.100
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flutter: new video path/var/mobile/Containers/Data/Application/70EA92CD-DF5D-440E-BBE1-C130BC7F0CC7/Library/Caches/1661891272856433result.mp4


Update #2 after a lot of help from @kesh below, this function was actually able to overlay the image on the video.


await FFmpegKit.executeAsync('-i $videoPath -i ${watermark.path} -filter_complex "overlay=10:10" -y ${videoFile.path}')


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