dvb | DVB/MPEG-TS library | Video Utils library

by ziutek Go Version: Current License: BSD-3-Clause

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | dvb Summary

dvb is a Go library typically used in Video, Video Utils applications. dvb has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

dvb

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Quality

Security

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Support

dvb has a low active ecosystem.

It has 85 star(s) with 14 fork(s). There are 9 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 4 have been closed. On average issues are closed in 122 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of dvb is current.

Quality

dvb has no bugs reported.

Security

dvb has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

dvb is licensed under the BSD-3-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

dvb releases are not available. You will need to build from source code and install.

Top functions reviewed by kandi - BETA

kandi has reviewed dvb and discovered the below as its top functions. This is intended to give you an instant insight into dvb implemented functionality, and help decide if they suit your requirements.

Tune configures the frontend device
ParseTerrestrialDeliverySystemDescriptor parses a TerrestrialDeliverySystemDescriptor .
This is the main function
DefaultParamDVBT returns the default parameters for dvb .
decodeMJDUTC decodes b .
ParseTOT parses a tOT file .
DecodeText decodes a text from a byte slice .
Read data from r .
ListenMulticastUDP creates a new PktReader for the given group and pids .
ParseServiceDescriptor parses a ServiceDescriptor .

Get all kandi verified functions for this library.

dvb Key Features

No Key Features are available at this moment for dvb.

dvb Examples and Code Snippets

No Code Snippets are available at this moment for dvb.

Community Discussions

Trending Discussions on dvb

building Gstreamer mpegts project with Cmake

How to structure (take out) JSON from a text string. (Python)

avcodec config for AAC into HLS/MPEG-TS ([mpegts @ 0x7fc4c00343c0] AAC bitstream not in ADTS format and extradata missing)

gstreamer-tsdemux is not discovering all streams

RTL2832U: Building a FM Receiver with GNC on Windows

How to retain DVB subs in output file after encoding?

is there a way to query data based on a particular item from a json object?

How do I install video.h for gstreamer on Linux?

Create a string from multiple tags in json file in jq

*** Missing UAPI file /home/lineageos/kernel/lenovo/tb8504f/include/uapi/linux/netfilter/xt_DSCP.h. Stop. while building recoveryimage

QUESTION

building Gstreamer mpegts project with Cmake

Asked 2021-Feb-26 at 01:08

We are trying to use Gstreamer's mpegts pluging to record a video stream stream using the following Gstreamer example code https://gstreamer.freedesktop.org/documentation/mpegtsmux/mpegtsmux.html?gi-language=c. When we compile the code using gcc mpegtstest.c -o mpegtstest `pkg-config --cflags --libs gstreamer-1.0 gstreamer-mpegts-1.0` -v everything works as expected and the program records with no issues. We are now trying to compile the code using cmake and make. cmake generates correctly but make fails with error. /usr/bin/ld: cannot find -lgstreamer-mpegts-1.0.

CMakeLists.txt

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ANSWER

Answered 2021-Feb-26 at 01:08

Based on your cmake output, I'd guess that you're using a version of FindGStreamer.cmake cribbed from WebKit. If that's the case, the variable you want to use is GSTREAMER_MPEGTS_INCLUDE_DIRS. Note the lack of a hyphen in the variable name.

If that's not the case, use a simple message() statement before the use of a variable to show you its value during the cmake step.

In your CMakeLists.txt:

Source https://stackoverflow.com/questions/66361327

QUESTION

How to structure (take out) JSON from a text string. (Python)

Asked 2021-Feb-25 at 00:18

I have a text string/script which I took out from a webpage. I would like to clean/structure that text string/Script so that I can only get JSON out of it. But its very long that I lost finding beginning and ending of JSON from that text. Does anyone help me out or advice a online website which can help to find the beginning and ending of JSON from that text. Many Thanks

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ANSWER

Answered 2021-Feb-24 at 19:17

You can use a RegEx to get the Jsons from your string.

I have used this pattern: {(?:[^{}]*{[^{]*})*[^{}]*}

The above regex checks only the Json in one level deep.

Code:

Source https://stackoverflow.com/questions/66351452

QUESTION

avcodec config for AAC into HLS/MPEG-TS ([mpegts @ 0x7fc4c00343c0] AAC bitstream not in ADTS format and extradata missing)

Asked 2021-Jan-15 at 09:20

We're encoding video into H264 and raw PCM samples into AAC for HLS streaming. The video works fine, but having trouble configuring the AAC encoder in libavcodec.

This SO question says:

There are two ways to put AAC into transport stream.

1. Using ADTS syntax (MPEG2-style).

In a such case PMT's stream_type should be specified as 0x0F (ISO/IEC 13818-7 Audio with ADTS transport syntax).

So, you are limited to using "old" (MPEG2) AAC versions only, without SBR and PS.

2. Using LATM+LOAS/AudioSyncStream syntax (MPEG4-style).

In a such case PMT's stream_type should be specified as 0x11 (ISO/IEC 14496-3 Audio with the LATM transport syntax).

And you can use all the force of "new" (MPEG4) AAC features, including SBR and PS.

Furthermore, DVB standard ETSI TS 101 154 demands: HEv1/HEv2 AAC shall be transmitted using LATM syntax.

But after a lot of searching I cannot find any documentation on how to do either of these. What is missing from the configuration below to get the encoded audio with either ADTS or LATM before it is passed to the MPEG-TS mux (for output to HLS)?

The current code to set up the AAC codec gives the error [mpegts @ 0x7fc4c00343c0] AAC bitstream not in ADTS format and extradata missing

The AAC encoder setup (error checking removed for brevity)

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ANSWER

Answered 2021-Jan-15 at 09:20

After a lot of searching I've found two ways to add the ADTS header to audio in order to properly MUX an MPEG-TS.

The first was to set up a separate AVFormatContext for ADTS, create an AVStream with the the encoded AAC packets and then use send_frame / receive_frame to get the same AAC data but this time with the ADTS header applied.

That added a lot of complexity and latency.

In the end, I just manually added an ADTS header to each encoded AAC packet before passing to av_interleaved_write_frame.

To help those in the future, here's the code:

Source https://stackoverflow.com/questions/65539102

QUESTION

gstreamer-tsdemux is not discovering all streams

Asked 2020-Aug-13 at 06:17

I need to demux and mux a stream with gstreamer (everything is tested with version 1.10.4 on CentOS and 1.14.1 on Ubuntu)
This means I have one input mpegts stream and need to output one stream with video/audio and one with klv metadata.

If my input streams consists of exactly those elements (video, audio and klv metadata stream) everything works as expected and I can send my video/audio and my klv metadata to two different udp sinks.

Now we are receiving a mpegts streams which has additional unknown binary streams within (we are not interested in those).
Here's the output of ffprobe

Working stream

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ANSWER

Answered 2020-Aug-13 at 06:17

As I already mentioned in the question, gstreamer's tsdemux isn't able to handle synchronous KLV data.
This leads to the following possibilites

roll your own gstreamer plugin
help fixing tsdemux and have a look at the PR in their gitlab
use ffmpeg. I successfully tested ffmpeg with the stream in question.

Since my C and gstreamer knowledge is nowhere near enough to continue with the first two options I settled for the third option.

Source https://stackoverflow.com/questions/63298585

QUESTION

RTL2832U: Building a FM Receiver with GNC on Windows

Asked 2020-Apr-22 at 20:47

I have been using SDRSharp for quite some time, listening to various stations, and I wanted to divulge more into how I can create tools using GNURadio.

I downloaded GNURadio Companion 3.8.0.0 and ran through the first three lessons.

I was following lessons from the official GNURadio.Wiki using the said V3 RTL-SDR Dongle (RTL2832U R820T2 TCX0 + BIAST + HF)

I have encountered trouble when creating the FM receiver as per lessons. Due to my hardware being different than what the lesson used, I did make a few revisions to the parameters of the flow graph.

I used a sample rate of 2.4e6 (2.4 MS/s) which is the max stable sample rate of the said dongle
I used the RTL-SDR Source Block as opposed to the UHD Block
I set the stop frequency to 2e9 as this dongle will not go as high as 6GHz

After these changes, I assume all is set, and Generate/Execute the flow graph. I am greeted with the following error:

...

ANSWER

Answered 2020-Apr-22 at 19:57

To give you a better answer, please answer the following questions: - what OS are you using? - how did you load GNU Radio 3.8? - have you tried using pip3 and python3? Try running the procedures in https://wiki.gnuradio.org/index.php/ModuleNotFoundError

You say "I downloaded GNURadio Companion 3.8.0.0", but you didn't say your source for it. Did you build the flowgraph yourself with GNURadio Companion 3.8.0.0, or did you load the https://raw.githubusercontent.com/gnuradio/gr-tutorial/master/examples/tutorial6/gr-tutorial-broadcast-fm-rx.grc ? It was written for GR 3.7.

Try this: - terminate SDRSharp - eject your dongle - reboot your computer - connect the dongle - try it again

Source https://stackoverflow.com/questions/61369180

QUESTION

How to retain DVB subs in output file after encoding?

Asked 2020-Jan-17 at 10:38

I have an input file which is basically a .ts file, it contains the 4 dvb subtitle streams inside of it(embedded inside). I am using the following command to retain the dvb subtitles in my output video.

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ANSWER

Answered 2020-Jan-17 at 10:38

You can use -c:s copy -map 0. The full command would look like below.

ffmpeg -i INPUT.ts -c:v copy -c:a copy -c:s copy -map 0 OUTPUT.ts

If the INPUT.ts file has unknown data inside, then you can use the option -ignore_unknown after -map 0 option.

Source https://stackoverflow.com/questions/59769373

QUESTION

is there a way to query data based on a particular item from a json object?

Asked 2019-Dec-09 at 07:25

I have user interface which looks should look like this

and that picture above is just pure HTML.

So when I tried to create it with React, I am failing to align the tv shows with a particular TV channel overflowing horizontally as per the channel.

Picture of what I get in React

I am querying the data from json files that have the objects and the TV channel object looks like { "groupID": 16481, "hasMediathek": true, "storeUrlAndroid": null, "storeUrlApple": null, "liveWeb": "https://www.zdf.de/live-tv", "liveApp": null, "defaultOrder": 1000, "hdp": false, "quality": 2, "name": "ZDFneo HD", "isEncrypted": false, "isHD": false, "dvbTriplet": "dvb://0.0.0", "id": null, "major": true }

this is connected to the shows through its groupID which shows up as channelID in the shows Object. Below is a sample for the shows object

...

ANSWER

Answered 2019-Dec-09 at 07:25

The correct solution for this (as found in the comments) is to use the filter() function. a find() function would only give back one object, or undefined, so you cannot use map on it.

Source https://stackoverflow.com/questions/59155205

QUESTION

How do I install video.h for gstreamer on Linux?

Asked 2019-Aug-21 at 19:36

I've followed installation instruction to install gstreamer on Ubuntu 18, but still I can't compile this line from examples:

...

ANSWER

Answered 2019-Aug-21 at 19:36

I've found the package with apt-file, it is libgstreamer-plugins-base1.0-dev.

Source https://stackoverflow.com/questions/57597985

QUESTION

Create a string from multiple tags in json file in jq

Asked 2019-Jul-26 at 20:51

I am trying to get multiple values from keys inside json. I have managed the first part, but the second part is not giving me what I want.

Here is a snippet of some data in json of a video:

...

ANSWER

Answered 2019-Jul-19 at 16:50

The following seems to be what you want:

Source https://stackoverflow.com/questions/57110596

QUESTION

*** Missing UAPI file /home/lineageos/kernel/lenovo/tb8504f/include/uapi/linux/netfilter/xt_DSCP.h. Stop. while building recoveryimage

Asked 2019-Jul-06 at 06:47

I am trying to build the kernel for a custom ROM and am getting the following exception:

...

ANSWER

Answered 2019-Jul-06 at 06:47

This was actually a problem with the capitalization of the files.

The kernel source I had received from the manufacturer (Lenovo) had many files in the netfilter directory that had different capilization than what was excepted by the build tools. Changing the capitalization got around these errors.

Source https://stackoverflow.com/questions/56870395

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install dvb

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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