Questions tagged [multimedia]
53 questions
44
votes
2 answers
How to extract an audio track from an MP4 video file on Windows?
Having an MP4 video file I'd like to get just the audio track of it. What makes my question different from the others is that I don't want to convert it (like to MP3 or anything) - I'd prefer to keep exactly the same AAC audio stream that is…
Ivan
- 7,863
35
votes
5 answers
How to avoid Microsoft Teams to act as a multimedia application?
I use Microsoft Teams in my corporate environement.
I have a multimedia keyboard (Logitech MX keys if it matters) that have a play/pause button.
When I press the button, it triggers the Microsoft Teams ring tone (even if no communication is active).…
Steve B
- 2,252
10
votes
1 answer
What is the format of the mpeg-dash (.m4s generally) segment?
I'm new to the multimedia programming, I'm trying to produce live mpeg-dash content from a transport stream buffer by parsing the packets individually.
I want to create .m4s segments but i'm confused about their structure.
In other words, if we…
Ishaan Shringi
- 103
9
votes
1 answer
How to stream the PC desktop to a phone with VLC?
I got this famous handy VLC player. I want to stream my PC screen over RTSP to my phone.
Here are the details:
My PC is connected to a DSL router via ethernet LAN cable, which has a built-in WiFi adapter. The modem, ethernet and WiFi have been…
user1062760
- 381
9
votes
8 answers
How can I enable multimedia keys of an Apple keyboard under Windows?
I am using Windows XP, with an Apple aluminum keyboard (the full one). It has multimedia keys at the top, and those work just great under Linux, regardless of the multimedia player I use. But I can't seem to get them working under Windows with, say,…
jfmessier
- 2,810
6
votes
3 answers
How do we call the line on video/audio player where we see how much of file has been loaded?
Look at the example image taken from YouTube
When I watch video file or listen to audio file, there is always a horizontal like which shows how much video/audio has been cached as well as my current location in video/audio.
What is this line…
JoeM
- 1,589
4
votes
1 answer
Which multimedia container format is the most suited for storing/streaming uncompressed audio + video?
I want to pipe uncompressed audio+video from one process to another.
It means it should be packed into some container. Which one is the best suited for the task?
I tried ffmpeg -i ... -vcodec rawvideo -acodec pcm_s16le -f ... -y test, but it mostly…
Vi.
- 17,755
4
votes
2 answers
Is there a multichannel digital TV tuner?
Is there such thing as multichannel digital tuner?
I have a digital TV at home and I want to capture 10-11 channels. All tuners I've found support only once channel at a time. The only solution I see at the moment is to buy a bunch of simple tuners…
Daniel
- 239
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4
votes
1 answer
Where is synchronization information stored in container formats?
Multiple audio streams, video streams and subtitles are stored in one container. These are played back together.
Where is the synchronization information stored in the container format? In meta-data or somewhere else?
Omid Yaghoubi
- 143
4
votes
4 answers
How can you create CDs with media that cannot be copied?
There are quite a few tutorials available on CDs/DVDs these days. When I try to copy the content on my hard disk, I just can't copy it. The CDs work correctly if I try to use AutoPlay option from the CD. What I need to understand is, how can one…
Rahul Soni
- 173
3
votes
2 answers
Could exiting the media player without stopping/closing the file cause damage?
Just what the title says really.
A multimedia file (movie/audio-cd/whatever) may be stopped by simply exiting the media player (windows media player/vlc/Qt/...) instead of going through the whole rigamarole of hitting the stop button (or File/Close…
Everyone
- 1,862
3
votes
1 answer
What is this dllhost.exe process doing with my video files?
On my Windows 10 Home x64 machine, I noticed an unknown instance of dllhost.exe using a high amount of CPU. Upon further inspection, I noticed that it had one thread using most of its CPU time. Here's the thread stack:
Based on some more digging…
nanofarad
- 719
- 1
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2
votes
1 answer
What is the lowest FPS at which the human eye can notice a flickering image? (testing this with ffmpeg)
I wanted to check what the lowest FPS is that the human eye cannot notice as flicker.
I created a white jpg and a black JPG. I started with 25 fps which means that I have 24 jpg of white and 1 of black.
Than I used this command:
ffmpeg -r 25 -i…
USer22999299
- 131
2
votes
1 answer
Change VLC multimedia icons (Windows)
I want VLC as my universal player.
It has a lot of qualities that everybody acknowledges and a few shortcomings which made me use other players in time. But in the end I have to concede it is still the best - especially while used on different…
user162573
2
votes
1 answer
How does multi-media keyboard control media/volume?
In my keyboard there are F5-F12 which have multi-media function when click them with Fn key together.
I tried the volume control in windows, it works just fine. I wonder how does the keyboard wire the signal to the OS?
By the way, there are Fn key…
lamwaiman1988
- 2,791