ffmpeg.wasm
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ffmpegwasm
ffmpeg.mount - ErrnoError: FS error
Describe the bug Getting the following error when trying to mount a file -
ErrnoError: FS error
try {
// Mount the file using WORKERFS
await ffmpeg.mount('WORKERFS', { files: [videoFile] }, '/mounted');
} catch (error) {
console.error('Error mounting file system:', error);
return;
}
To Reproduce Please provide a GitHub link or code snippet.
let videoBuffer = new Uint8Array();
// Process frames in chunks
const chunkSize = 10; // Adjust chunk size based on memory constraints
for (let i = 0; i < frames.length; i += chunkSize) {
const chunkFrames = frames.slice(i, i + chunkSize);
for (const frame of chunkFrames) {
const planeData = new Uint8Array(config.width * config.height * 4); // Assuming RGBA format
await frame.copyTo(planeData);
videoBuffer = appendBuffer(videoBuffer, planeData);
frame.close();
}
}
// Create a Blob from the video buffer and a File object
const videoBlob = new Blob([videoBuffer], { type: 'application/octet-stream' });
const videoFile = new File([videoBlob], 'input.raw');
// Mount the file using WORKERFS
try {
// Mount the file using WORKERFS
await ffmpeg.mount('WORKERFS', { files: [videoFile] }, '/mounted');
} catch (error) {
console.error('Error mounting file system:', error);
return;
}
const inputFileName = '/mounted/input.raw';
const outputFileName = '/mounted/output.mp4';
// const inputFileName = 'input.raw';
// const outputFileName = 'output.mp4';
//await ffmpeg.writeFile(inputFileName, videoBuffer);
const args = [
'-f', 'rawvideo',
'-pix_fmt', 'rgba',
'-s', `${config.width}x${config.height}`,
'-r', `${config.framerate}`,
'-i', `${inputFileName}`,
'-c:v', 'libvpx-vp9',
'-preset', 'ultrafast',
'-profile:v', '0', // Profile 0 (vp09.00.10.08 corresponds to profile 0)
'-b:v', '30M', // Reduced bitrate
outputFileName
];
console.log(...args);
await ffmpeg.exec(args);
Expected behavior I run out of memory using await ffmpeg.writeFile(inputFileName, videoBuffer); so wanted to use the mount to process the videoframe buffer but I can't get it to work on the latest [email protected]
Screenshots n/a
Desktop (please complete the following information):
- win 10
- Browser chrome
- Version 127.0.6526.0
Try creating the mounted dir, before mounting data to it.
await ffmpeg.createDir('/mounted');
Thanks @stri8ed that was it!
Do you know if I need to setup permissions somehow for the ffmpeg output file?
I had to create a blank output file in mounted files otherwise I got /mounted/output.mp4: Operation not permitted from ffmpeg
const videoBlob = new Blob([videoBuffer], { type: 'application/octet-stream' });
const inputVideoFile = new File([videoBlob], 'input.raw');
const outputVideoFile2 = new File([], 'output.mp4', { type: 'video/mp4' });
const inputFileName = '/mounted/input.raw';
const outputFileName = '/mounted/output.mp4';
// encode
try {
//create mounted dir
await ffmpeg.createDir('/mounted');
// add file to workersfs
await ffmpeg.mount('WORKERFS', {
files: [
inputVideoFile,
outputVideoFile2
] }, '/mounted');
//ffmpeg cmd
const args = [
'-f', 'rawvideo',
'-pix_fmt', 'rgba',
'-s', `${config.width}x${config.height}`,
'-r', `${config.framerate}`,
'-i', `${inputFileName}`,
'-c:v', 'libx264',
//'-preset', 'ultrafast',
'-profile:v', '0', // Profile 0 (vp09.00.10.08 corresponds to profile 0)
'-b:v', '30M', // Reduced bitrate
outputFileName
];
console.log(...args);
await ffmpeg.exec(args);
//await ffmpeg.exec(['-i', `${inputFileName}`, `${outputFileName}`]);
} catch (error) {
console.error('Error detected ', error);
return;
}
but now I'm getting the following I think it can't write to it?: Could not write header for output file #0 (incorrect codec parameters ?): I/O error benchmark.ts:163 Error initializing output stream 0:0 -- benchmark.ts:163 Conversion failed!
ok I adjusted the ffmpeg cmd to output to webm which resolved the header output issue - But now I'm hitting Error writing trailer of /mounted/output.webm: I/O error
-f rawvideo -pix_fmt rgba -s 100x100 -r 60 -i /mounted/input.raw -c:v libvpx-vp9 -profile:v 0 -b:v 3000k /mounted/output.webm
benchmark.ts:163 ffmpeg version 5.1.4 Copyright (c) 2000-2023 the FFmpeg developers
benchmark.ts:163 built with emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)
benchmark.ts:163 configuration: --target-os=none --arch=x86_32 --enable-cross-compile --disable-asm --disable-stripping --disable-programs --disable-doc --disable-debug --disable-runtime-cpudetect --disable-autodetect --nm=emnm --ar=emar --ranlib=emranlib --cc=emcc --cxx=em++ --objcc=emcc --dep-cc=emcc --extra-cflags='-I/opt/include -O3 -msimd128 -sUSE_PTHREADS -pthread' --extra-cxxflags='-I/opt/include -O3 -msimd128 -sUSE_PTHREADS -pthread' --enable-gpl --enable-libx264 --enable-libx265 --enable-libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libopus --enable-zlib --enable-libwebp --enable-libfreetype --enable-libfribidi --enable-libass --enable-libzimg
benchmark.ts:163 libavutil 57. 28.100 / 57. 28.100
benchmark.ts:163 libavcodec 59. 37.100 / 59. 37.100
benchmark.ts:163 libavformat 59. 27.100 / 59. 27.100
benchmark.ts:163 libavdevice 59. 7.100 / 59. 7.100
benchmark.ts:163 libavfilter 8. 44.100 / 8. 44.100
benchmark.ts:163 libswscale 6. 7.100 / 6. 7.100
benchmark.ts:163 libswresample 4. 7.100 / 4. 7.100
benchmark.ts:163 libpostproc 56. 6.100 / 56. 6.100
benchmark.ts:163 [rawvideo @ 0xdec3e0] Estimating duration from bitrate, this may be inaccurate
benchmark.ts:163 Input #0, rawvideo, from '/mounted/input.raw':
benchmark.ts:163 Duration: 00:00:00.02, start: 0.000000, bitrate: 19199 kb/s
benchmark.ts:163 Stream #0:0: Video: rawvideo (RGBA / 0x41424752), rgba, 100x100, 19200 kb/s, 60 tbr, 60 tbn
benchmark.ts:163 Stream mapping:
benchmark.ts:163 Stream #0:0 -> #0:0 (rawvideo (native) -> vp9 (libvpx-vp9))
benchmark.ts:163 [libvpx-vp9 @ 0xe003e0] v1.13.1
benchmark.ts:163 Output #0, webm, to '/mounted/output.webm':
benchmark.ts:163 Metadata:
benchmark.ts:163 encoder : Lavf59.27.100
benchmark.ts:163 Stream #0:0: Video: vp9 (Profile 0), yuva420p(tv, progressive), 100x100, q=2-31, 3000 kb/s, 60 fps, 1k tbn
benchmark.ts:163 Metadata:
benchmark.ts:163 encoder : Lavc59.37.100 libvpx-vp9
benchmark.ts:163 Side data:
benchmark.ts:163 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
benchmark.ts:163 frame= 1 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
benchmark.ts:163 Error writing trailer of /mounted/output.webm: I/O error
benchmark.ts:163 frame= 1 fps=0.0 q=9.0 Lsize= 1kB time=00:00:00.00 bitrate=5488.0kbits/s speed=0.0161x
benchmark.ts:163 video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 453.225800%
benchmark.ts:163 Error closing file /mounted/output.webm: I/O error
benchmark.ts:163 Aborted()