Questions tagged [streaming]

The act of transmitting media over a network for consumption in real time.

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1answer
29 views

Good codec for embedded system video decoding

I need to get streaming video working where a source streams video to an embedded platform. This embedded system has an ARM-Cortex-A9 without a GPU or a hardware video decoder. Unfortunately I don't ...
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1answer
13 views

How do I prevent Wirecast from crashing?

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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ffmpeg: keyframe extraction with pts

I have an ffmpeg newbie question, I am extracting keyframes from streams using this command: ffmpeg -skip_frame nokey -i {0} -vsync 0 -r 30 -f image2 keyframe-%09d.jpeg However, instead of an auto-...
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1answer
26 views

Resize video while live streaming with ffmpeg

My server uses this command to stream a video (1280x544): ffmpeg -re -i c:\ffmpeg\This.mp4 -vcodec copy -acodec copy -movflags faststart -f mpegts tcp://192.168.1.82:1234?listen Now, I would like to ...
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Trying to sync multiple ip cameras in ffmpeg, having trouble finding the timestamps of each frames being sent

I am quite new to ffmpeg. I am wondering if it is possible to get the timestamps of a live video stream from ffmpeg. I read that as the first packet in RTP protocol is sent, it contains the NTP ...
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How to set up Red5 server for streaming iOS app to other mobile phones and web browsers?

I would like to set up a Red5 server to broadcast from an iOS app to other mobile phones and web browser. I am new to streaming. What do I need in addition to the basic Red5 release I downloaded from ...
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1answer
28 views

FFmpeg run multiple filters in parallel from C API

I successfully applied a FFmpeg filter from C API (my previous question here). I see the filters are running sequentially. Now the question is, how can I run multiple filters in parallel? If run ...
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1answer
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Streaming Compression Math

Using 4:2:2, the data rate and compression are: 4k -- 11.88 Gb/s -- 339.4x HD -- 2.38 Gb/s -- 237.6x Assuming 4:2:0 for both, Netflix and Stadia use the same compression for HD. To use the same ...
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FFMPEG: Publishing a Directory of video files (already encoded no transcoding needed) to RTMP & dealing with disconnects

I am currently using the below bash script to publish my directory of .mp4 video files (via concatenated list) to a RTMP server. My primary struggle is when FFMPEG loses connection to the server. The ...
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GoPro live video

Is there a safe way to use a GoPro live video stream while in the water diving / surfing? I saw a lot of guides that have you connecting capture cards but I don't trust that when I'm in the water.
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1answer
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Identify H.265 from the OSX Command Line?

Can anyone suggest a way to tell the difference, from the OSX command line, between .mkv files encoded with H.265 from those encoded with H.264? Plex H.265 streams viewed from some devices (e.g. LG ...
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Receiving libx264 feed and viewing it through guvcview using v4l2

I am attempting to set up a low-cost home security system. At one end of my house I have a Raspberry Pi connected to a Logitech C920 webcam running the following command: ffmpeg -re -i /dev/video0 -...
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Live Stream + Still Photography - Minimal Wireless Setup

We need to stream crowded outdoor events live. The camera will be still and shooting. We cannot use computer of any kind and no wires except a plug for a 4G Wifi Router if needed. We don't need more ...
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5 views

Terminology for 'stingers' composed of 2 different scenes?

If I have a full RGB Scene A, a full RGB Scene B, and a video file that provides a 'stinger' transition called Breaking News that wipes across the screen. How can I live composite (or implement live ...
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1answer
3k views

RTMP server using ffmpeg

I'd like to use a Teradek Cube connected to a broadcast camera to push to a server running ffmpeg with an open RTMP port, and have ffmpeg re-stream that feed to a decoder using RTMP or RTSP. ...
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MPEG DASH Encoder for changing parameters on the fly

Is there any MPEG Dash encoder which has the feature to change the parameters on the fly? I need to change the segment duration on the fly(dynamically) without exiting the process.
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136 views

Changing start number and Period start time in MPD - ffmpeg mpeg dash encoder

I'm trying to implement MPEG dash live streaming using FFmpeg dash encoder and shaka player. Is there any way to set the start number for segments to any value other than 1? For example, chunk-...
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1answer
45 views

How to convert .scc closed caption subtitles into human readable text

I'm trying to find a tool or library (possibly an open-source tool) to parse or convert .scc closed caption subtitle files to a human readable text, say .srt or xml or any text formats. Is there a ...
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1answer
13 views

looking for some advise on setting up a sports event livestream with local playback

I have recently been tasked with setting up a live stream for a Karate Tournament. Never did anything like it before but I'm the organization's technical wiz so its landed on my lap. I'm looking for ...
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1answer
12 views

Stream from several android phones to pc

I'd like to know if there is a way to record from several android phones at the same time (at least 2) and send the data in real-time to a computer. I don't need to watch the recording in real-time, ...
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240 views

FFmpeg with input SRT stream very low bitrate

I am trying to record an input SRT stream with ffmpeg 4.0 and even though it is recognized as a valid stream and the input stream is around 2.5Mbps, the recording is with only 80-120Kbps. I understand ...
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How to get total number of chunks/segments from .mpd/Dash URL using MSE in javascript

Can any one please advise how to get total number of chunks/segments from .mpd URL using Javascript Media Source Extension? Thanks,
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Best way to handle stream with ffmpeg and GPU

So in my project, I need to capture a video stream, decode the video, run the individual frames through an object detection algorithm and then play the output as a video. This whole operation is ...
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1answer
20 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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1answer
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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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1answer
28 views

Retrieve and decode V-Chip data from an aired digital TV stream

I'm trying to retrieve and decode V-chip data from my TV streams (NTSC/ATSC digital streams). Apparently these data are embedded somewhere in the stream itself, but I have no clue how they are ...
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1answer
175 views

MPEGTS & HLS: Only second segment onwards is valid

When i use hexadecagonal audio channel layout in an mpegts container, I can receive and play back the stream fine only if I configure the hls server to allow serving the very first segment, and then ...
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245 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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1answer
20 views

Hardware and internet requirements for 1080/30p streaming, if video source is external

I have a Panasonic X1 camera that can be connected to a pc using an acquisition card. In that case its video stream could be broadcasted using OBS or similar programs. What I miss are the ...
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1answer
29 views

What are the free livecast/livestream services with very low latency

What are the free livecast/livestream services with very low latency (below 3 seconds) ? I tried YouTube Live but I couldn't keep the latency below 10 seconds.
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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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232 views

What is the difference between SRT and RTP?

I am trying to understand the benefits of SRT over other protocols like RTP. Haivision has a decent introductory explanation for SRT as well as a white paper, but I am unclear how it compares to RTP. ...
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105 views

MJPEG Compression

Does a video stream compressed with MJPEG have a less variable output bit rate than others. If I make a little list, start with YUYP420, MJPEG, MPEG2, MPEG4, MPEG4_Part10HEVC(h264), SNOW? Given the ...
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1answer
52 views

MJPEG Streaming

in https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Video/pktvideoaag.html it says: Another type of video compression is MJPEG … the resulting video stream is larger but the packet sizes ...
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198 views

FFmpeg NVENC rtsp stream encoding freezes randomly

In some executions of the following command, ffmpeg freezes at certain time and after some minutes starts to encode the stream again. The problem don't happen always. The stream server is an avigilon ...
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1answer
95 views

resend headers NUT formats

If I do this ffmpeg -f dshow -video_size 720x480 -framerate 29.97 -i video="Roxio Video Capture USB":audio="Line (Roxio Video Capture USB)" -c:v mjpeg -c:a pcm_s16le -map 0:v -map 0:a -f fifo -...
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571 views

GStreamer: RTMP to RTP

I want to streaming RTMP signal to RTP(multicast, mpegts container) via GStreamer. As I understand, I need to perform the following actions (please correct me if I wrong): Demuxing RTMP stream ...
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1answer
510 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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2answers
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Is failure free streaming possible in todays world?

Is streaming video from one PC to a physical second PC with recording it there, without getting any frame drops, artefacts, basicly everything what the source video don't have, in todays world doable ...
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1answer
245 views

how to simultaneously create rtsp and livehttp video streams in vlc from the same live source?

I want to simultaneously create rtsp and livehttp video streams from the same live H.264 source in cvlc. I can individually create either kind of stream just fine, and I can also create two rtsp ...
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2answers
82 views

Live Streaming Video Camera?

Are there any video cameras (recording over 30 minutes of footage length) that have live streaming services (RTMP) built-in to the camera? I know there are a ton of cameras with YouTube (etc.) ...
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1answer
28 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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1answer
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How to send stream to server without any compression? [duplicate]

How to send stream to server without any compression (output should be exactly the same as the video stream being sent)? ffmpeg doesn't seem to be able to do that. It always lose something (based on ...
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1answer
166 views

How can I extract clips from a streaming video feed in near real-time?

A client wants me to write some software, perhaps ffmpeg wrapped in scripting, which will monitor a streaming video feed, and copy clips from it in near real-time, delivering them as self-contained ...
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1answer
31 views

Compact Camera for nighttime live streaming?

We recently adopted a pet hamster for our office, and are interested in setting up a live feed for evenings and weekends so that employees and customers can tune in to the lil guy during his most ...
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2answers
112 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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1answer
1k views

stream with ffserver without encode-decode

I have static file on my disk I want to stream it with ffserver . The problem is that ffserver is decode and encode my file. I know how to pass decode and encode when I save stream to file ffmpeg-i ...
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0answers
537 views

Switching between multiple m3u8 playlist

In a live stream setup, I have 2 cameras and each one sends RTMP stream to one different application which is on my Nginx-RTMP server. On the browser I am using Videojs Hls plugin. Now my question ...
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1answer
3k views

OBS Studio: desktop audio falls out of sync

I have an interesting problem: When I stream to Twitch (or record), my desktop audio goes out of sync with the video over time. The microphone is perfectly synced the whole time. Both OBS Studio and "...
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224 views

Understanding mpeg-dash for VoD

What programs should I use for create MPEG-DASH stream and generate manifest file [may be ffmpeg but I'm not sure that it is enough]? Can I add subtitles file after I create stream? Can I store audio ...