Questions tagged [live]

Live refers to the manipulation and consumption of a subject in real time without significant delay, as opposed to playback after it has been recorded.

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can I change ffmpeg crop position at runtime for each frame during stream

I am trying to move an Region of Interest (RoI) around a multi-camera tiled source (which will be too big to encode for smooth viewing), and stream this "live". The RoI is externally ...
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1 answer
17 views

Real time merging of two analog video streams (coming for wireless receivers (pal/ntsc)

Combining ANALOG video feeds -- real time/low latency We fly fpv. One pilot, one second operator controlling the camera, both have analog video feeds. Pilot vtx feed: backgrond gimbal feed: we want a ...
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16 views

Estimating PTS offset to synchronize live audio and video

I have a live video and live audio input, however due to the camera and microphone they may incur variable amounts of latency before I receive the input for encoding. Unfortunately, the latency is ...
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1 answer
191 views

Can I inject subtitles into a live stream with FFmpeg?

In my live streaming scenario I need to grab a video source and inject subtitles that I generate algorithmically during the stream (i.e. I do not know the subtitles upfront), and publish the streams ...
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Live stream of a website

I need to live stream a website that contains image, video and audio to Twitch.tv. Researching a solution brought me to this Github example that runs on Heroku.com. Dockerfile: FROM jrottenberg/ffmpeg:...
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25 views

Live streaming with DSLR video cameras that have time-out recording

DSLRs, unlike camcorders, are often made to stop recording when a certain amount of minutes, like 35, passes since first pressing the record button. What's the point of this? Does this rule hold for ...
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340 views

Streaming video file to YouTube Live with FFmpeg - Automatically resume after crash?

ffmpeg -re -i [FILENAME] -codec copy -f flv rtmp://a.rtmp.youtube.com/live2/[STREAM KEY] I'm able to use this command to stream a video file to YouTube Live without re-encoding. If FFmpeg crashes for ...
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1 answer
145 views

Stream video using FFmpeg with minimum writes reads to disk

We are streaming a video using a 30 instances of docker containers hosted on Azure each instance running FFmpeg. The problem is that Azure limits the reads/writes that a container can do. Is there a ...
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1 answer
26 views

video chroma keyed background into Skype [closed]

I speak to my sons via Skype (for Win 10). I have a new green screen, and would like to surprise them by pretending to be on a beach when we next talk. Zoom can chroma key in a beach with waving palm ...
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1 vote
0 answers
149 views

OBS Audio MIDI Control

I use OBS to create technical demonstrations, and had the thought: What if I could regulate my audio levels using a MIDI Controller? The Korg NanoKontrol has faders that I could use to mix, but now ...
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1 vote
1 answer
725 views

How do I prevent Wirecast from crashing? [closed]

I'm attempt to livestream from a 2016 MacBook Pro, but for some reason Wirecast (12.2.1) crashes. It doesn't matter what I'm doing, it only stays open for a couple of minutes, then it just completely ...
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338 views

Changing DASH Parameters in FFmpeg on the fly?

I am using FFmpeg to create MPEG dash segments from my camera and playing it using Shaka Player. But I want to change the segment size (For example 2 seconds to 1 second) without creating a new ...
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1 answer
37 views

Dump keyframes of a livestream

I'm trying to create a "highlights" gallery for an event that's been livestreamed (say an Apple product launch keynote or similar H264 stream) - is there a way using FFMPEG to dump all the keyframes / ...
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2 votes
1 answer
351 views

Make Youtube live streaming available to another country after end streaming

I have an youtube channel that makes a lot of live streams. But i have different countries watching at the same hour in its own time zone. I have a live streaming on Brazil starting 6PM and finishing ...
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4 votes
3 answers
22k views

Use Streaming Online Video/Live As Source In OBS Studio

Is this possible? Use others or your own Facebook or YouTube live stream as source in obs or any broadcast software and then broadcast it on another page or channel.
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1 vote
1 answer
1k views

DASH Live vs OnDemand profiles

I've read about dash profiles and from what I understood the difference between live and on-demand profiles are that live furthermore splits each representation into segments (which is critical for ...
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170 views

Improve FrameServer performances

I followed ffmpeg guide to install debugmode frameserver. All works fine except with the fact that the frames served does not goes up to 25 fps. FFmpeg reports a speed of 0.9x.. My initial goal ...
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7 votes
1 answer
22k views

ffmpeg - live stream into a browser video tag (localhost only)

I'm building an application, that is basically a video chat, where a user connects using WebRTC with another users (operator) browser, and should be able to talk to a third person. The WebRTC part is ...
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2 votes
1 answer
1k views

High cpu usage with FFMPEG copying video codec from HLS

Reposted from superuser: https://superuser.com/questions/1340574/ffmpeg-copy-hls-high-cpu-usage I have a set of batch scripts (Windows 10) to create an "instant replay" for some (11) HLS streams ...
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3 votes
1 answer
95 views

Live Video object tracking

Is there any (Open Source or Low Cost) software that can track x,y position of objects in live video? An example would be tracking the position of a player in a soccer match.
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3 answers
8k views

Canon 800d/T7i clean-hdmi?

I've just bought a Canon 800d to use that as live cam recorder (using elgato game capture). The problem is that the hdmi output has the focus box and I've managed to remove that only in manual focus ...
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2 votes
1 answer
620 views

Trim a segment of live, still-encoding H.264/FLV with ffmpeg

I am encoding a video with ffmpeg into H.264 stored in an FLV container. I would like to be able to trim segments of this video out as it is still encoding. The video contains no audio. I am encoding ...
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1 answer
36 views

What do I need for facebook Audio Live streaming?

I would like to do audio live streaming on facebook. I intend to get audio feed from myself, from a guest sitting next to me, from a guest over the phone and a guest on Skype. And then stream it on ...
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1 answer
82 views

Adding graphics into video real time (lightweight)

In a nutshell I want to place a basic object, specifically a line, over a live feed of video from camera. Use case scenario: Simple camera connected to Arduino is capturing scenery which is displayed ...
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6 votes
2 answers
168 views

One long continuous shot, sped-up until it becomes "live"

I have an idea for a video project (that I will need to commission a studio to produce for me), but at this early stage I don't even know whether my idea is feasible. The idea involves turning (hours ...
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3 votes
2 answers
50 views

If the environment being captured on a video stream becomes less complicated, does the bit rate and latency decrease?

For example, a live GoPro video is being streamed to a HDMI capture software on Windows. The live stream of an office with the lights on has a bitrate of X and a latency of Y ms. If the lights in the ...
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1 vote
0 answers
39 views

Overlays and local ad insertion for live streaming

I have an event coming up and i am only broadcasting on youtube via OBS,i want to have overlays(the person who is on stage name appearing from the bottom) and locally stored sponsored ads to the ...
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3 votes
2 answers
311 views

How can I mark or tag spots in a video clip during a live recording

A couple of years ago I reacll seeing something on a crowd funding platform. It was a way to 'tag' or 'mark' a portion of a video during live recording. i.e. if you just had a sports play that you ...
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0 votes
1 answer
72 views

Datavideo KMU-100 FORMAT

I was able to get only one 4k camera signal into my KMU-100,to get 4 HD outputs. The issue am facing right now is, How do i get my two 4K cameras working on the KMU-100? Because,the format i used for ...
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2 votes
1 answer
224 views

I want to run two 24/7 livestreams at once, both these streams will be on Youtube, is it possible?

I want to run two 24/7 livestreams at once (both on Youtube), using an intel nuc device with the assistance of obs studio software, is this possible? If not, how can I run 2 24/7 streams at once ...
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2 votes
0 answers
97 views

Switching channels without cutting video into clips in kdenlive

I'm using KDEnlive to edit multiple videotracks. I have the tracks synched, but they are different lengths. In a preview of the video I can sort-of live edit by switching off different video-channels. ...
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1 vote
0 answers
219 views

Add an overlay (video or text) to multicast tv stream

What i have 10 decoder which subscribe to private multicasted TV channels. 10 TV to display what the decoders outputs (connected though HDMI). What i want to do I would like to to add an overlay (...
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1 vote
0 answers
79 views

4 Camera Instant Replay

I am doing a live stream and would like the following video flow. I am able to handle all parts of this except for the Instant Replay. How could I accomplish the instant replay? I have 4 PoE Pan ...
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1 vote
1 answer
6k views

Use A6000 as webcam type camera

I need to do a live stream and I'm looking for a way to connect my Sony A6000 to my computer so that it can be used as a camera for Facebook Live. Any ideas?
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0 votes
2 answers
1k views

Send webcam feed to server for buffer

Let me explain my problem: I have 2 webcams looking out over the beach but my internet connection is very slow. So i'm looking for a way to buffer the videofeed to a server and then let my clients ...
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-1 votes
2 answers
756 views

Facebook Live Stream crash

I am using OBS to stream on facebook. I could connect to facebook with OBS and see preview at facebook (audio and video is streaming in preview mode at facebook). When I go live it stop working. What ...
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4 votes
4 answers
5k views

Multi-source, picture-in-picture live stream

So I have some experience with live production, but I want to do something a bit more complex and need some things cleared. This project would use multiple cameras (lets say 5), some non-camera ...
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0 votes
2 answers
7k views

Camcorders that can stream directly to YouTube

I've googled for the last couple hours and couldn't find any real answers. In short, are there any camcorders that allow you to live stream your video straight to YouTube. All the camcorders with live ...
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3 votes
1 answer
43 views

How does media manage to co-host a show from two continents without latency?

Bloomberg TV features programming daily where the anchors co-host the show from both London and New York at the same time. Interaction between the co-hosts at the different locations are instantaneous ...
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0 votes
1 answer
2k views

FFMPEG RTSP -> MPEG-DASH Stops on Long Streams

I need to provide MPEG-DASH live content generation from several IP cameras. I use ngx_rtmp_module + ffmpeg for creating MPEG DASH content. Everything work fine, but if I leave the conversion running ...
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0 votes
1 answer
72 views

Wirecast to wirecast

I am running a broadcast and would like to include content from 2 locations, each location has the ability to stream from wirecast. Is it possible to stream from wirecast at location 1 to wirecast at ...
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2 votes
2 answers
2k views

Resize a live stream and overlay over another live stream for broadcasting

I'm working with ATEM Production Studio 4K from Blackmagic to switch between several video feeds that are broadcast using Wirecast onto Youtube from a Mac. Our ATEM product is not one of the switchers ...
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1 vote
1 answer
85 views

What software is used to add animated characters to live TV?

Specifically, I am wondering how Cartoon Donald Trump was added, voiced, and puppet-ed in clips such as
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4 votes
1 answer
8k views

Dash live streaming

after a lot of googling and after I've read tons of forums, I'm still not able to do a live stream using my cam to another device. My system is made up by a server ( a windows laptop ), that capture ...
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1 vote
1 answer
3k views

best way to publish low latency video on ffmpeg

I am trying to publish a stream of live video that need to get to the client side in under 3 sec in latency. I am using vMix to capture a 720p/50 stream from a camera, that by virtual camera letting ...
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0 votes
1 answer
30 views

starting new need help [closed]

The hope is to be doing interviews in breweries and restraunts the guy who was set to do it has bailed and so has his equipment amd knowledge. I was wondering whats the best starter equipment to get ...
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3 votes
5 answers
335 views

Live streaming to a disk

Not sure if this is the right place to ask this question (pretty technical), but I thought I'd start here. I'm interested in building a website that will have a streaming-video feature. It's not ...
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1 vote
1 answer
150 views

Live streaming an event

I want to live stream an event on YouTube with my DSLR. Will I need a HDMI capture card? If yes can you please list a few inexpensive ones. Also, please mention if there are any other ways for me to ...
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1 vote
0 answers
51 views

Are there any small battery powered 360 degree cameras capable of a native "google cardboard" format output over HDMI connection?

The question is really part #2 of the following project: I'm looking into mounting a 360 degree camera to a drone to get a view like this camera captures and can output the video like a webcam in "...
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-1 votes
1 answer
40 views

Streaming video that's being recorded? [closed]

Is streaming video while it's being recorded possible? If so how? What Programs would someone need?
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