Details
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Bug
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Resolution: Incomplete
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P1: Critical
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None
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6.6.1
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None
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macOS
Description
import QtQuick 6.2 import QtMultimediaItem { anchors.fill: parent MediaPlayer { id: videoPlayer videoOutput: videoOutput source: "file:///path/to/bunny.webm" onErrorOccurred: { console.log("error", videoPlayer.errorString) } audioOutput: AudioOutput {} } VideoOutput { id: videoOutput anchors.fill: parent } Component.onCompleted: { videoPlayer.play(); } }
just have a mediaplayer play the attached bunny.webm video file
Qt logs
"FFmpeg log: Format yuv420p chosen by get_format()." "FFmpeg log: All info found" "FFmpeg log: After avformat_find_stream_info() pos: 3229 bytes read:32768 seeks:0 frames:1" qt.multimedia.ffmpeg.mediadataholder: AVStream duration -9223372036854775808 is invalid. Taking it from the metadata "FFmpeg log: detected 12 logical cores" "FFmpeg log: Format videotoolbox_vld chosen by get_format()." "FFmpeg log: Format videotoolbox_vld requires hwaccel initialisation."
FFplay logs
[vp9 @ 0x7fda8391ea80] Format yuv420p chosen by get_format(). [matroska,webm @ 0x7fda8390a280] All info found [matroska,webm @ 0x7fda8390a280] After avformat_find_stream_info() pos: 3229 bytes read:32768 seeks:0 frames:1 Input #0, matroska,webm, from '/Users/kevinbarreau/QtProjects/playbackBug1/server/bunny.webm': Metadata: encoder : google/video-file Duration: 00:10:34.57, start: 0.000000, bitrate: 19257 kb/s Stream #0:0(eng), 1, 1/1000: Video: vp9 (Profile 0), 1 reference frame, yuv420p(tv, bt709), 3840x2160, 0/1, SAR 1:1 DAR 16:9, 60 fps, 60 tbr, 1k tbn (default) detected 12 logical cores [vp9 @ 0x7fda83815540] Format yuv420p chosen by get_format().
There is a mismatch in chosen format videotoolbox vs yuv420 possibly causing the error?
Here is how I get the video, it's simple node.js app using express and ytdl-core ... if you wan to skip this just DL the video I uploaded it here https://file.io/Qix5bMhH5h6G
const ytdl = require('ytdl-core'); const express = require('express'); const fs = require('fs');// const ytVideo = `https://www.youtube.com/watch?v=XITHbsUUlYI`; const ytVideo = `https://www.youtube.com/watch?v=aqz-KE-bpKQ`;const app = express()const filters = ['videoonly', 'videoandaudio', 'audioonly']app.get("/", (req, res) => { let stream = ytdl(ytVideo, { quality: 'highestvideo', filter: filters[0], }); stream.on('info', (info, format) => { console.log(JSON.stringify(format, null, 2)); }); stream.on('error', err => { console.log("/ error stream", err); res.status(500).end(); }).pipe(res); });app.get("/download", (req, res) => { let stream = ytdl(ytVideo, { quality: 'highestvideo', filter: filters[0], }); stream.on('error', err => { console.log("/ error stream", err); res.status(500).end(); }).pipe(fs.createWriteStream('video.webm')); });app.listen(3000);
Assumptions : Qt multimedia 's ffmpeg and ffplay should have the same capabilities / behaviour ?
On macbook pro 2019 Intel, Sonoma