Recherche avancée
Autres articles (56)
-
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 -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (5503)
-
Stream sent via FFMPEG (NodeJS) to RTMP (YouTube) not being received
10 décembre 2024, par QumberI am writing a very basic chrome extension that captures and sends video stream to a nodeJS server, which in turns sends it to Youtube live server.


Here is my implementation of the backend which receives data via WebRTC and send to YT using FFMPEG :


const express = require('express');
const cors = require('cors');
const { RTCPeerConnection, RTCSessionDescription } = require('@roamhq/wrtc');
const { spawn } = require('child_process');

const app = express();
app.use(express.json());
app.use(cors());

app.post('/webrtc', async (req, res) => {
 const peerConnection = new RTCPeerConnection();

 // Start ffmpeg process for streaming
 const ffmpeg = spawn('ffmpeg', [
 '-f', 'flv',
 '-i', 'pipe:0',
 '-c:v', 'libx264',
 '-preset', 'veryfast',
 '-maxrate', '3000k',
 '-bufsize', '6000k',
 '-pix_fmt', 'yuv420p',
 '-g', '50',
 '-f', 'flv',
 'rtmp://a.rtmp.youtube.com/live2/MY_KEY'
 ]);

 ffmpeg.on('error', (err) => {
 console.error('FFmpeg error:', err);
 });

 ffmpeg.stderr.on('data', (data) => {
 console.error('FFmpeg stderr:', data.toString());
 });

 ffmpeg.stdout.on('data', (data) => {
 console.log('FFmpeg stdout:', data.toString());
 });

 // Handle incoming tracks
 peerConnection.ontrack = (event) => {
 console.log('Track received:', event.track.kind);
 const track = event.track;

 // Stream the incoming track to FFmpeg
 track.onunmute = () => {
 console.log('Track unmuted:', track.kind);
 const reader = track.createReadStream();
 reader.on('data', (chunk) => {
 console.log('Forwarding chunk to FFmpeg:', chunk.length);
 ffmpeg.stdin.write(chunk);
 });
 reader.on('end', () => {
 console.log('Stream ended');
 ffmpeg.stdin.end();
 });
 };

 track.onmute = () => {
 console.log('Track muted:', track.kind);
 };
 };

 // Set the remote description (offer) received from the client
 await peerConnection.setRemoteDescription(new RTCSessionDescription(req.body.sdp));

 // Create an answer and send it back to the client
 const answer = await peerConnection.createAnswer();
 await peerConnection.setLocalDescription(answer);

 res.json({ sdp: peerConnection.localDescription });
});

app.listen(3000, () => {
 console.log('WebRTC to RTMP server running on port 3000');
});



This is the output I get, but nothing gets sent to YouTube :




FFmpeg stderr: ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.3.9.4)

FFmpeg stderr: configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0.2_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon

FFmpeg stderr: libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100

FFmpeg stderr: libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100




I do not understand what I am doing wrong. Any help would be appreciated.



Optionally Here's the frontend code from the extension, which (to me) appears to be recording and sending the capture :


popup.js & popup.html




document.addEventListener('DOMContentLoaded', () => {
 document.getElementById('openCapturePage').addEventListener('click', () => {
 chrome.tabs.create({
 url: chrome.runtime.getURL('capture.html')
 });
 });
});





 
 <code class="echappe-js"><script src='http://stackoverflow.com/feeds/tag/popup.js'></script>



StreamSavvy













capture.js & capture.html




let peerConnection;

async function startStreaming() {
 try {
 const stream = await navigator.mediaDevices.getDisplayMedia({
 video: {
 cursor: "always"
 },
 audio: false
 });

 peerConnection = new RTCPeerConnection({
 iceServers: [{
 urls: 'stun:stun.l.google.com:19302'
 }]
 });

 stream.getTracks().forEach(track => peerConnection.addTrack(track, stream));

 const offer = await peerConnection.createOffer();
 await peerConnection.setLocalDescription(offer);

 const response = await fetch('http://localhost:3000/webrtc', {
 method: 'POST',
 headers: {
 'Content-Type': 'application/json'
 },
 body: JSON.stringify({
 sdp: peerConnection.localDescription
 })
 });

 const {
 sdp
 } = await response.json();
 await peerConnection.setRemoteDescription(new RTCSessionDescription(sdp));

 console.log("Streaming to server via WebRTC...");
 } catch (error) {
 console.error("Error starting streaming:", error.name, error.message);
 }
}

async function stopStreaming() {
 if (peerConnection) {
 // Stop all media tracks
 peerConnection.getSenders().forEach(sender => {
 if (sender.track) {
 sender.track.stop();
 }
 });

 // Close the peer connection
 peerConnection.close();
 peerConnection = null;
 console.log("Streaming stopped");
 }
}

document.addEventListener('DOMContentLoaded', () => {
 document.getElementById('startCapture').addEventListener('click', startStreaming);
 document.getElementById('stopCapture').addEventListener('click', stopStreaming);
});





 
 <code class="echappe-js"><script src='http://stackoverflow.com/feeds/tag/capture.js'></script>



StreamSavvy Capture















background.js (service worker)




chrome.runtime.onInstalled.addListener(() => {
 console.log("StreamSavvy Extension Installed");
});

chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
 if (message.type === 'startStreaming') {
 chrome.tabs.create({
 url: chrome.runtime.getURL('capture.html')
 });
 sendResponse({
 status: 'streaming'
 });
 } else if (message.type === 'stopStreaming') {
 chrome.tabs.query({
 url: chrome.runtime.getURL('capture.html')
 }, (tabs) => {
 if (tabs.length > 0) {
 chrome.tabs.sendMessage(tabs[0].id, {
 type: 'stopStreaming'
 });
 sendResponse({
 status: 'stopped'
 });
 }
 });
 }
 return true; // Keep the message channel open for sendResponse
});






-
Error Opening RTMP Stream through FFmpeg command when executed through exec package [closed]
3 octobre 2024, par AkhilI have been trying to transcode the live stream from RTMP server running on
rtmp://localhost:1936/live/testwith FFmpeg in a Go application usingos/execpackage, But seems to not work and gives the input/output error (I have attached below). The same exact ffmpeg command when I execute on terminal, works as its supposed to. Not Sure why that is, here is my code for reproducing and analyzing the mistakes.

ffmpegCmd := fmt.Sprintf("ffmpeg -nostdin -i rtmp://localhost:1936/live/%s -c:v libx264 -s %s -f %s %s/stream.mpd",
 streamKey, resolution, sp.OutputFormat, outputPath)
 log.Printf("Executing FFmpeg command: %s", ffmpegCmd)

 // Prepare the command execution with a timeout context
 ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second) // Set a 60-second timeout
 defer cancel()

 cmd := exec.CommandContext(ctx, "bash", "-c", ffmpegCmd)


the ffmpeg command looks like this :

ffmpeg -nostdin -i rtmp://localhost:1936/live/test -c:v libx264 -s 1920x1080 -f dash output/test/1080p/stream.mpd

I get the following error :


Error opening input: Input/output error

Error opening input file rtmp://localhost:1936/live/test.

Error opening input files: Input/output error

Exiting normally, received signal 2.

signal: interrupt


I have already tried to break the command, and then execute it. Something like :


cmd := exec.CommandContext(ctx,
 "ffmpeg",
 "-nostdin",
 "-i", "rtmp://localhost:1936/live/"+streamKey,
 "-c:v", "libx264",
 "-s", resolution,
 "-f", sp.OutputFormat,
 outputPath+"/stream.mpd")


After running the ffmpeg command with -loglevel debug and -report :


Here is the logs and errors I get :


When I run it within the go application :


ffmpeg started on 2024-10-02 at 12:00:06
Report written to "ffmpeg-20241002-120006.log"
Log level: 48
Command line:
ffmpeg -loglevel debug -report -i rtmp://localhost:1936/live/test -c:v libx264 -s 1920x1080 -f dash ./output/test/1080p/stream.mpd
ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.3.9.4)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0.2_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-i' ... matched as input url with argument 'rtmp://localhost:1936/live/test'.
Reading option '-c:v' ... matched as option 'c' (select encoder/decoder ('copy' to copy stream without reencoding)) with argument 'libx264'.
Reading option '-s' ... matched as option 's' (set frame size (WxH or abbreviation)) with argument '1920x1080'.
Reading option '-f' ... matched as option 'f' (force container format (auto-detected otherwise)) with argument 'dash'.
Reading option './output/test/1080p/stream.mpd' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url rtmp://localhost:1936/live/test.
Successfully parsed a group of options.
Opening an input file: rtmp://localhost:1936/live/test.
[AVFormatContext @ 0x13f721f90] Opening 'rtmp://localhost:1936/live/test' for reading
[rtmp @ 0x13f6040e0] No default whitelist set
[tcp @ 0x13f7223d0] No default whitelist set
[tcp @ 0x13f7223d0] Original list of addresses:
[tcp @ 0x13f7223d0] Address ::1 port 1936
[tcp @ 0x13f7223d0] Address 127.0.0.1 port 1936
[tcp @ 0x13f7223d0] Interleaved list of addresses:
[tcp @ 0x13f7223d0] Address ::1 port 1936
[tcp @ 0x13f7223d0] Address 127.0.0.1 port 1936
[tcp @ 0x13f7223d0] Starting connection attempt to ::1 port 1936
[tcp @ 0x13f7223d0] Connection attempt to ::1 port 1936 failed: Connection refused
[tcp @ 0x13f7223d0] Starting connection attempt to 127.0.0.1 port 1936
[tcp @ 0x13f7223d0] Successfully connected to 127.0.0.1 port 1936
[rtmp @ 0x13f6040e0] Handshaking...
[rtmp @ 0x13f6040e0] Type answer 3
[rtmp @ 0x13f6040e0] Server version 13.14.10.13
[rtmp @ 0x13f6040e0] Proto = rtmp, path = /live/test, app = live, fname = test
[rtmp @ 0x13f6040e0] Window acknowledgement size = 5000000
[rtmp @ 0x13f6040e0] Max sent, unacked = 5000000
[rtmp @ 0x13f6040e0] New incoming chunk size = 4096
[rtmp @ 0x13f6040e0] Creating stream...
[rtmp @ 0x13f6040e0] Sending play command for 'test'
[rtmp @ 0x13f6040e0] Deleting stream...
[in#0 @ 0x13f721d40] Error opening input: Input/output error
Error opening input file rtmp://localhost:1936/live/test.
Error opening input files: Input/output error
Exiting normally, received signal 2.


This is what i get when i run the same command on terminal :


<same as="as" but="but" please="please" scroll="scroll" further="further">

[rtmp @ 0x1437144c0] No default whitelist set
[tcp @ 0x143604f20] No default whitelist set
[tcp @ 0x143604f20] Original list of addresses:
[tcp @ 0x143604f20] Address ::1 port 1936
[tcp @ 0x143604f20] Address 127.0.0.1 port 1936
[tcp @ 0x143604f20] Interleaved list of addresses:
[tcp @ 0x143604f20] Address ::1 port 1936
[tcp @ 0x143604f20] Address 127.0.0.1 port 1936
[tcp @ 0x143604f20] Starting connection attempt to ::1 port 1936
[tcp @ 0x143604f20] Connection attempt to ::1 port 1936 failed: Connection refused
[tcp @ 0x143604f20] Starting connection attempt to 127.0.0.1 port 1936
[tcp @ 0x143604f20] Successfully connected to 127.0.0.1 port 1936
[rtmp @ 0x1437144c0] Handshaking...
[rtmp @ 0x1437144c0] Type answer 3
[rtmp @ 0x1437144c0] Server version 13.14.10.13
[rtmp @ 0x1437144c0] Proto = rtmp, path = /live/test, app = live, fname = test
[rtmp @ 0x1437144c0] Window acknowledgement size = 5000000
[rtmp @ 0x1437144c0] Max sent, unacked = 5000000
[rtmp @ 0x1437144c0] New incoming chunk size = 4096
[rtmp @ 0x1437144c0] Creating stream...
[rtmp @ 0x1437144c0] Sending play command for 'test'
[flv @ 0x143604b30] Format flv probed with size=2048 and score=100
[flv @ 0x143604b30] Before avformat_find_stream_info() pos: 13 bytes read:2263 seeks:0 nb_streams:0
Transform tree:
 mdct_inv_float_c - type: mdct_float, len: 64, factors[2]: [2, any], flags: [unaligned, out_of_place, inv_only]
 fft32_ns_float_neon - type: fft_float, len: 32, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_inv_float_c - type: mdct_float, len: 64, factors[2]: [2, any], flags: [unaligned, out_of_place, inv_only]
 fft32_ns_float_neon - type: fft_float, len: 32, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_pfa_15xM_inv_float_c - type: mdct_float, len: 120, factors[2]: [15, any], flags: [unaligned, out_of_place, inv_only]
 fft4_fwd_float_neon - type: fft_float, len: 4, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_inv_float_c - type: mdct_float, len: 128, factors[2]: [2, any], flags: [unaligned, out_of_place, inv_only]
 fft_sr_ns_float_neon - type: fft_float, len: 64, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_pfa_15xM_inv_float_c - type: mdct_float, len: 480, factors[2]: [15, any], flags: [unaligned, out_of_place, inv_only]
 fft16_ns_float_neon - type: fft_float, len: 16, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_inv_float_c - type: mdct_float, len: 512, factors[2]: [2, any], flags: [unaligned, out_of_place, inv_only]
 fft_sr_ns_float_neon - type: fft_float, len: 256, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_pfa_15xM_inv_float_c - type: mdct_float, len: 960, factors[2]: [15, any], flags: [unaligned, out_of_place, inv_only]
 fft32_ns_float_neon - type: fft_float, len: 32, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_inv_float_c - type: mdct_float, len: 1024, factors[2]: [2, any], flags: [unaligned, out_of_place, inv_only]
 fft_sr_ns_float_neon - type: fft_float, len: 512, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
Transform tree:
 mdct_fwd_float_c - type: mdct_float, len: 1024, factors[2]: [2, any], flags: [unaligned, out_of_place, fwd_only]
 fft_sr_ns_float_neon - type: fft_float, len: 512, factor: 2, flags: [aligned, inplace, out_of_place, preshuf]
[NULL @ 0x144124920] nal_unit_type: 7(SPS), nal_ref_idc: 3
[NULL @ 0x144124920] Decoding VUI
[NULL @ 0x144124920] nal_unit_type: 8(PPS), nal_ref_idc: 3
[NULL @ 0x144124920] Decoding VUI
[h264 @ 0x144124920] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x144124920] Decoding VUI
[h264 @ 0x144124920] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x144124920] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x144124920] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x144124920] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0x144124920] Decoding VUI
[h264 @ 0x144124920] Format yuv420p chosen by get_format().
[h264 @ 0x144124920] Reinit context to 1280x720, pix_fmt: yuv420p
[h264 @ 0x144124920] no picture 
[flv @ 0x143604b30] All info found
[flv @ 0x143604b30] rfps: 29.666667 0.016552
[flv @ 0x143604b30] rfps: 29.750000 0.009347
[flv @ 0x143604b30] rfps: 29.750000 0.009347
[flv @ 0x143604b30] rfps: 29.833333 0.004197
[flv @ 0x143604b30] rfps: 29.916667 0.001104
[flv @ 0x143604b30] rfps: 29.916667 0.001104
[flv @ 0x143604b30] rfps: 30.000000 0.000067
[flv @ 0x143604b30] rfps: 30.000000 0.000067
[flv @ 0x143604b30] rfps: 60.000000 0.000270
[flv @ 0x143604b30] rfps: 60.000000 0.000270
[flv @ 0x143604b30] rfps: 120.000000 0.001079
[flv @ 0x143604b30] rfps: 120.000000 0.001079
[flv @ 0x143604b30] rfps: 240.000000 0.004316
[flv @ 0x143604b30] rfps: 240.000000 0.004316
[flv @ 0x143604b30] rfps: 29.970030 0.000204
[flv @ 0x143604b30] rfps: 29.970030 0.000204
[flv @ 0x143604b30] rfps: 59.940060 0.000814
[flv @ 0x143604b30] rfps: 59.940060 0.000814
[flv @ 0x143604b30] After avformat_find_stream_info() pos: 496783 bytes read:496783 seeks:0 frames:179
Input #0, flv, from 'rtmp://localhost:1936/live/test':
 Metadata:
 |RtmpSampleAccess: true
 Server : NGINX RTMP (github.com/arut/nginx-rtmp-module)
 displayWidth : 1280
 displayHeight : 720
 fps : 30
 profile : 
 level : 
 Duration: 00:00:00.00, start: 6.742000, bitrate: N/A
 Stream #0:0, 138, 1/1000: Audio: aac (LC), 48000 Hz, stereo, fltp, 163 kb/s
 Stream #0:1, 41, 1/1000: Video: h264 (High), 1 reference frame, yuv420p(tv, bt709, progressive, left), 1280x720 [SAR 1:1 DAR 16:9], 0/1, 2560 kb/s, 30 fps, 30 tbr, 1k tbn
Successfully opened the file.
Parsing a group of options: output url ./output/test/1080p/stream.mpd.
Applying option c:v (select encoder/decoder ('copy' to copy stream without reencoding)) with argument libx264.
Applying option s (set frame size (WxH or abbreviation)) with argument 1920x1080.
Applying option f (force container format (auto-detected otherwise)) with argument dash.
Successfully parsed a group of options.
Opening an output file: ./output/test/1080p/stream.mpd.
[out#0/dash @ 0x123707480] No explicit maps, mapping streams automatically...
[vost#0:0/libx264 @ 0x123707d60] Created video stream from input stream 0:1
detected 10 logical cores
[h264 @ 0x123607b70] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x123607b70] Decoding VUI
[h264 @ 0x123607b70] nal_unit_type: 8(PPS), nal_ref_idc: 3
[aost#0:1/aac @ 0x144028080] Created audio stream from input stream 0:0
Transform tree:
 mdct_inv_float_c - type: md

<it simply="simply" starts="starts" working="working">
</it></same>

I am not sure if there is something to do with Permissions.


-
Screen recording with ffmpeg has stuttering [closed]
7 novembre 2024, par Adam LabušI am recording with ffmpeg like so :
ffmpeg -f x11grab -probesize 18M -framerate 30 -video_size 1920x1080 -i :0.0+0,0 -f pulse -i -c:v libx264 -preset ultrafast -c:a aac .mkv

Problem :


Usually at the start the video starts to stutter, sometimes stuttering up to 20 seconds, each frame during this stuttering is shown for 1-5 seconds. Example video : https://drive.google.com/file/d/1uwdaFboCO2qNALgaPC8JD15W64BE3VyY/view?usp=sharing


Diagnostics :


Machine details :


OS: Fedora Linux 41 (Server Edition) x86_64
Host: HP ProDesk 600 G2 DM
Kernel: Linux 6.11.5-300.fc41.x86_64
WM: Openbox (X11)
CPU: Intel(R) Core(TM) i5-6500T (4) @ 3.10 GHz
GPU: Intel HD Graphics 530 @ 1.10 GHz [Integrated]
Memory: 884.62 MiB / 15.49 GiB (6%)
Swap: 0 B / 8.00 GiB (0%)
Disk (/): 5.45 GiB / 14.94 GiB (37%) - xfs


My gpu(20%), cpu (50%), disk utilisation is always in well perfect range - I tried stress testing gpu, ram, cpu and disk while recording and it had no effect on the recording. I tried recording to ramdisk. I always have 10gb ram available. I ran the same command on my laptop (hp 850 g5) and computer and encountered no stuttering at all.


If it matters the machine is running bare Xorg and openbox display manager


I have tried :


- 

- setting fps_mode to cfr - because the frame rate does fluctuate around 29-30 at the start
- setting fps_mode to vfr
- setting fps_mode to passthrough
- setting cfr all the way to 40
- presets veryfast, faster
- increasing thread_queue_size
- async=1
















Ffmpeg Log :


ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers 
 built with gcc 14 (GCC) 
 configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-swi
tches -pipe -Wall -Wno-complain-wrong-lang -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64 
-mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/re
dhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 ' --extra-cflags=' -I/usr/include/rav1e' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --enable-chromaprint --enable-fontcon
fig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-lcms2 --enable-libaom --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libass --enable-libbluray --enable-libbs2b --enable-libcodec2 --enable-libcdio --enable-libdrm --enabl
e-libjack --enable-libjxl --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libharfbuzz --enable-libilbc --enable-libmp3lame --enable-libmysofa --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenh264 --enable-libopenjpeg --enabl
e-libopenmpt --enable-libopus --enable-libpulse --enable-libplacebo --enable-librsvg --enable-librav1e --enable-librubberband --enable-libqrencode --enable-libsmbclient --enable-version3 --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh
 --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-version3 --enable-vapoursynth --enable-libvpx --enable-vulkan --enable-libshaderc --enable-libwebp --enable-l
ibx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-avfilter --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-strip
ping --shlibdir=/usr/lib64 --enable-lto --enable-libvpl --enable-runtime-cpudetect 
 libavutil 59. 8.100 / 59. 8.100 
 libavcodec 61. 3.100 / 61. 3.100 
 libavformat 61. 1.100 / 61. 1.100 
 libavdevice 61. 1.100 / 61. 1.100 
 libavfilter 10. 1.100 / 10. 1.100 
 libswscale 8. 1.100 / 8. 1.100 
 libswresample 5. 1.100 / 5. 1.100 
 libpostproc 58. 1.100 / 58. 1.100 
Input #0, x11grab, from ':0.0+0,0': 
 Duration: N/A, start: 1730923728.417205, bitrate: 1990656 kb/s 
 Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 1990656 kb/s, 30 fps, 29.92 tbr, 1000k tbn 
[aist#1:0/pcm_s16le @ 0x55a29c634a40] Guessed Channel Layout: stereo 
Input #1, pulse, from 'auto_null.monitor': 
 Duration: N/A, start: 1730923728.521148, bitrate: 1536 kb/s 
 Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s 
Stream mapping: 
 Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264)) 
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native)) 
Press [q] to stop, [?] for help 
[libx264 @ 0x55a29c627f00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 
[libx264 @ 0x55a29c627f00] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit 
[libx264 @ 0x55a29c627f00] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 tre
llis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 
Output #0, matroska, to '/tmp/tmp38n41uwz.mkv': 
 Metadata: 
 encoder : Lavf61.1.100 
 Stream #0:0: Video: h264 (H264 / 0x34363248), yuv444p(progressive), 1920x1080, q=2-31, 29.92 fps, 1k tbn 
 Metadata: 
 encoder : Lavc61.3.100 libx264 
 Side data: 
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A 
 Stream #0:1: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp, 128 kb/s 
 Metadata: 
 encoder : Lavc61.3.100 aac 
frame= 915 fps= 24 q=29.0 size= 7936KiB time=00:00:35.79 bitrate=1816.0kbits/s dup=0 drop=167 speed=0.929x 
 
[q] command received. Exiting.


Syndiquer tout le site
