All Questions
Tagged with video video-streaming
157
questions
0
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0
answers
19
views
FFmpeg fps detection bug?
I have ffmpeg setup which produces rtmp stream from remote rtsp stream. The rtsp stream comes from ip camera which support multiple profiles. Each profile has 1080p 30 fps, 1080p 15 fps.
The weird ...
0
votes
0
answers
17
views
How to create a video encoding ladder for any aspect ratio?
For a given video uploaded by a user, I need to create three versions of it to cover standard definition (SD), high definition (HD), full high definition (FHD), and ultra high definition (UHD e.g. 4K)....
- 111
0
votes
0
answers
97
views
Why do Matroska files (.mkv) with '.der.' in the file name not play in Google Chrome but instead bring up a download dialog?
Usually, Matroska files (.mkv) that I open in Google Chrome (e.g. https://www.example.com/example.mkv) are played directly in the browser.
However, I noticed that files with .der. in the file name (e....
0
votes
0
answers
58
views
How do create a dynamic delay fix with MPEG-TS?
My media player can display a couple of videos (origin video - Multicast address, video stream is in MPEG-TS)
Whenever I play both video streams I see a delay in one of the streams.
I would like to ...
0
votes
0
answers
376
views
When I attempt to live a video in an infinite loop using the ffmpeg command, it automatically terminates after a few hours
When attempting to continuously loop a video using the ffmpeg command with the following syntax:
ffmpeg -re -stream_loop -1 -i abc.mp4 -c copy -f flv rtmps://abc.xyz/.....
I encounter an issue where ...
1
vote
0
answers
158
views
Sending and receiving ffmpeg video stream through USB to TTL converter
I need to transfer video signal through USB to TTL converter from one VM and receive it on other USB to TTL converter then display the received stream on second VM (the bitrate on converters are ...
1
vote
1
answer
438
views
Streaming to Facebook Live with ffmpeg
I've set up an RTMP/RTSP streaming-service with MediaMTX on my desktop.
From OBS Studio, I'm then streaming to:
Server: rtmp://localhost/
Stream Key: stream
This leaves me with 2 streams:
RTMP: rtmp:/...
- 11
0
votes
0
answers
223
views
What can I do to debug and avoid decoding artifacts with RTP in ffmpeg?
I do encoding and decoding of a VP9 RTP stream programmatically, and I am experiencing occasional colorful artifacts like these:
In the ffmpeg log (both when using ffplay and my own code), this ...
- 806
0
votes
1
answer
515
views
ffmpeg - cut without reencoding and strange behaviour: application provided duration is out of range for mov/mp4 format
In Ubuntu 18.04 I quite often used the following command for trimming part of the video without re encoding (which means without any quality loss).
ffmpeg -ss 00:06:00 -i DSCF5984.MOV -t 00:07:00 -c ...
- 101
0
votes
1
answer
3k
views
How can I HTTP stream a USB webcam plugged into my headless Ubuntu Server remotely?
I have a USB webcam plugged into my computer running Ubuntu Server at home. I want to access its video feed remotely.
I am connected to the server's network with a VPN, so I can SSH into it using ...
- 111
2
votes
1
answer
905
views
Delay video (and audio) by x seconds in FFMPEG HLS Stream
I have an input HLS stream stream.m3u8 using my macbook camera by running:
ffmpeg -f avfoundation ^
-framerate 30 -i 0 ^
-c:v libx264 -c:a aac -b:a 128k ^
-ac 2 -crf 5 -preset veryfast -...
0
votes
1
answer
1k
views
Artifacts when watching videos online
A couple of months ago, artifacts started appearing when watching videos on YouTube and other online platforms. They look like color distortions in bright areas (See examples). When I switch to full ...
- 111
0
votes
1
answer
333
views
How to convert home movie DVDs to .mpeg files?
My wife brought me a box of DVDs with her home movies from her life before me. I would like to store the contents permanently on our Linux home server alongside 100,000 jpg files and some more recent ...
- 61
0
votes
0
answers
223
views
Live video in facebook is lagging while using ffmpeg from video link
Livevideo in facebook is working fine for local device video(case 1) but its having lagging issue from video link(case 2) using FFMPEG.
Please find command for the same and log.
Case 1 - Command : ...
2
votes
0
answers
630
views
Ffmpeg multitrack live streaming is breaking when source becomes a bit unstable
I am struggling with Ffmpeg live streaming where my input is from many live RTMP streams and my output is multitrack live mpegts stream, the idea is that I am getting input from multiple live RTMP ...
- 130
0
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0
answers
365
views
What is the difference between download, progressive-download, streaming and pseudo-streaming
Let me put my understanding first, lets say we are referring to a video file.
download => In general download, file cannot be played unless it completely downloaded.
progressive-download => Here,...
- 19
0
votes
0
answers
5k
views
Save a local file URL .m3u8 stream using youtube-dl
I have a local .m3u8 file containing stream information. I would like to use youtube-dl or a fork to download the stream.
When I pass the local file to youtube-dl it gives the error that it is ...
- 4,463
0
votes
0
answers
1k
views
Ffmpeg hardware acceleration unsupported formats betwen transpose and auto_scaler_0
I am trying to develop a transoding service which makes use of nvidia hardware acceleration capabilities ( The gpu used in this process is a Tesla T4); I want to generate a mpeg-dash playlist for my ...
- 51
1
vote
1
answer
3k
views
Recorded videos colours are really bright. But only on some software
Ever since I got a new computer and a new monitor my colours are really bright when recording my screen. Since I'm a designer it makes me look like I've designed some weird designs and the clients ...
- 963
1
vote
0
answers
167
views
speedup preview of video while it is being downloaded using FFMPEG
I need to download cca 10min clip from a much longer video from server every day. So to save bandwidth and time, I want to see a preview and stop right after the desired part ends while it is still ...
- 13
1
vote
1
answer
1k
views
How to append a stream record to previous data recorded?
I have a question about the append process in FFmpeg. Actually I have a live stream that comes from Wowza in HLS format (.m3u8 and .ts). Everything works fine if the stream doesn't fails.
In this ...
0
votes
1
answer
54
views
How to autocaption a video?
I want to play videos and autocation them.
I have some training videos and I want to see speech to text like what we have in youtube.(to show text under the video)
I don’t want to upload files ...
- 3
0
votes
0
answers
694
views
Fixing video container keyframes for live streaming
I have a capture card that is handled by a program which I intend to run in a Raspberry Pi 3 (I compiled for it) to stream video locally to a Chromecast.
This program is run and spits out video data ...
0
votes
1
answer
432
views
how can i add an additonal output to ffmpeg to also pull out a frame for an image after segmenting
this is my command. i need to add something to the end to pull out a vframe every second or specified seconds and save to file. i've see how to do that on its own but not as a second output. i keep ...
0
votes
2
answers
1k
views
Measure / Remove H.264 Video Delay
I have an IP camera that sends an H.264 video stream that is supposed to be mixed / muxed with a separate audio stream.
On direct mixing
ffmpeg -i <video> -i <audio> -map 0:v -map 1:a <...
- 247
1
vote
0
answers
832
views
Continuously live streaming video of the latest image in a folder (Win or Linux)
I have a camera taking pictures every ~second and saving that image to a remote network folder in YYYY-MM-DD hhmmss.jpg format (2020-12-31 232359.jpg). The filenames aren't necessarily sequential, ...
- 225
0
votes
2
answers
417
views
Streaming with Canon XA10, Black Magic Intensity Shuttle, and StreamLabs OBS on Windows 10
I am attempting to Live Stream with my Canon XA10 using a BlackMagic Intensity Shuttle and StreamLabs OBS. I can't seem to get a picture in either the BM Desktop Video, BM Media Express, or OBS. I ...
- 81
0
votes
2
answers
108
views
Is there a convenient way to remotely watch a user's screen in real time?
A friend of mine is going to have a video conference in Google Meet. At this conference she will be given some information in the conference chat and shown some documents. I'm not a participant of the ...
- 171
2
votes
0
answers
593
views
ffmpeg create segments from rtmp stream deterministicly
I want to use ffmpeg to "convert" live RTMP stream to hls or mpeg-dash. For redundancy purposes I would like to run multiple ffmpegs simultaneously for one RTMP stream.
The problem is, when I start ...
- 233
0
votes
1
answer
1k
views
How can i merge hundreds or even thousands of video files into one using ffmpeg or any other tools?
Basically i have like hundreds of small video files (format is .ts) and each of them is like only 10 seconds long and about 10MB size. They are named in order like '100.ts' '101.ts' '102.ts' ... '600....
- 1
0
votes
0
answers
494
views
FFMPEG: Have the video title appear once at the beginning and then again at the middle of the video with drawtext
Im streaming a live video using FFMPEG to youtube, what i would love to do is draw a text title on the video at various parts of the video such as at the first frame for 20 seconds and then again ...
38
votes
4
answers
275k
views
Download video from Microsoft Stream
I'd like to download video from Microsoft Teams, or better yet, from Microsoft Stream. I read that this function is available only for the owner.
The problem is the following: from tomorrow my ...
- 1,151
1
vote
2
answers
7k
views
ffmpeg live streaming - m3u8 not playable and missing last segment
I'm trying to restream with ffmpeg. I don't care if it will be mjpeg or whatever else, as long as it will be playable in modern browsers. But latency is critical, it would be great to have <5 sec ...
- 243
0
votes
1
answer
398
views
Need to Specify source for UDP video stream, what is the syntax?
I am trying to add to my IPTV box a m3u list with UDP streams but I have to specify the source IP in order for it to run. With VLC it works with this syntax:
udp://[sourceIP]:2000@[MulticatsIP]:2000
...
- 1
1
vote
0
answers
556
views
Create a live video stream using images
I am looking for a way to generate a live video stream from a single image that is updated constantly. The live stream would display the last generated image repeatedly until a new image arrives.
...
- 113
0
votes
0
answers
5k
views
ffmpeg RTSP stream from camera + Alsa audio mux to RTMP destination?
Folks,
I have an IP Camera that I want to take the RTSP/H264 stream and use ffmpeg to send this to a youtube Live / RTMP service. The challenge I have is streaming the video with a separate audio ...
- 1
1
vote
1
answer
2k
views
How do I create CMAF content using Shaka Packager?
I am currently trying to create streaming content for testing and I must create CMAF content. I have this code, but I do not really know it this is creating real CMAF content:
IN_VIDEO="$1"
FILENAME=$...
0
votes
0
answers
1k
views
Faster decoding with FFmpeg
I am using ffmpeg for live stream processing. Basically, I compiled ffmpeg myself. Unfortunately, I notice that when the bitrate gets a bit high (> 15mbps H264), the decoding can not keep up with the ...
- 539
1
vote
3
answers
2k
views
How to download videos from Microsoft's Learn site for offline viewing
How to download videos from Microsoft's Learn site so I can watch the videos offline whilst travelling? For example videos from the following page:
https://docs.microsoft.com/en-us/learn/modules/...
- 125
1
vote
1
answer
3k
views
Lossless Video Streaming with FFmpeg
I am looking stream video (likely with udp) between two instances of ffmpeg, without having any potential quality loss due to encoding. I am not too worried about bandwidth, I just want the stream to ...
- 113
0
votes
0
answers
48
views
How to detect Intervals of Frozen Videos [duplicate]
I'm trying to detect intervals where a given video is frozen. Looking at a related post here, apparently FFmpeg has a filter named freezedetect which exactly does this. But the post had no accepted ...
- 539
0
votes
1
answer
40
views
How do youtube videos display translations before translated words are spoken? [closed]
I'm not sure whether this post is appropriate here but I don't know where to post it.
On my Android device I was watching the following video in Italy.
https://youtu.be/XZmGGAbHqa0
I notice that ...
4
votes
4
answers
6k
views
How do I stop Netflix from losing sync between audio and video?
When I play Netflix on my Windows 10 computer, the audio gradually becomes desynchronized from the video. This happens on any browser, and on the Netflix Windows Store app.
- 920
2
votes
1
answer
533
views
YouTube video in Firefox sometimes plays, sometimes doesn't
Recently I've been having trouble playing video in Firefox reliably.
Often the same video that played a moment ago, then won't play after navigating away and back.
This is what I see instead:
When ...
- 213
0
votes
2
answers
1k
views
How to find out the quality of the video?
If I do have multiple URL links for videos or audios, how can I determine which one has the best quality. Is there a header information, which tells me about the quality of the video - even the ...
- 121
1
vote
1
answer
819
views
HEVC 10 bit streaming to full HD TV
I have a low power desktop (ASRock Mod 1150 H97M with integrated graphics, Intel Pentium G3258 CPU, 1920*1200 monitor, Windows 10) which acts as a media server in my home. My TV is Sony/Android TV/ 55 ...
- 111
0
votes
1
answer
130
views
How to split video output signal from 1 PC to 40 projectors [closed]
I am thinking of implementing this by daisy-chaining multiple splitters but I am not sure if it will work.
Does anyone know of a cost-effective solution to this?
Thanks.
- 171
1
vote
1
answer
1k
views
ffmpeg - waveform.png: Invalid argument
I'm trying to use ffmpeg on Synology NAS with DSM 6.2 to create waveform of my mp4 files.
ffmpeg -i aaa.mp4 -lavfi showwavespic=split_channels=1:s=1024x800 waveform.png
[NULL @ 0x24271e0] Unable to ...
- 11
1
vote
0
answers
4k
views
How to download .m3u8 video with query string and EXT-X-KEY?
The m3u8 file location is
https://hls2.videos.sproutvideo.com/4c6...../b24db8.../video/720.m3u8?Policy=eyJTd....._&Signature=S7pry.....__&Key-Pair-Id=APKAIB5DGCGAQJ4GGIUQ
The 720.key is ...
- 11
2
votes
1
answer
3k
views
Ffmpeg: Arguments for optimizing video stream?
I'm using ffmpeg from a debian machine on my local network. This machine is listening from incoming streams:
$ ffmpeg -i udp://192.168.1.3:8080 /path/to/out.avi
And from my macbook, sending the ...
- 21