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Questions tagged [decoding]

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0 votes
2 answers
70 views

VAAPI decoding on UBUNTU does not display video

I am trying to decode and display a video using gstreamer vaapi streamed over ethernet network. I don't have any errors just the video is not displayed. The pipeline used on sender is: gst-launch-1.0 ...
Diana Atomulesei's user avatar
0 votes
0 answers
56 views

TCP packets with Protobuf messages not dissected

I'm trying to use Wireshark to dissect Protobuf messages sent over TCP using gRPC. When I view the data portion of a messages, I see raw bytes instead of a dissected view. I've added the path to the ...
user2233706's user avatar
1 vote
0 answers
73 views

Where does Firefox store push notifications?

I made a NodeJS script a while ago that can read Chromium notifications by reading the LevelDB database where they're stored. I use it to have more granularity when handling notifications, and to sync ...
lucassilvas1's user avatar
1 vote
0 answers
489 views

Decoding aac to PCM in ffmpeg introduces noise in the raw PCM audio

I have a .mp4 file generated with ffmpeg as follows. ffmpeg -y -i video_extended.mp4 -itsoffset 00:00:04.00 -i output5-1.wav -map 0:0 -map 1:0 -c:v copy -c:a aac -ac 6 -ar 48000 -b:a 128k -async 1 ...
userDtrm's user avatar
  • 111
0 votes
1 answer
132 views

How does thetext decoder knows which text encoder is used to encode?

When I create a text file on Windows operating system using Notepad and hit save, I get to choose the text encoding. Suppose I saved this file using UTF-16 LE encoding and later sent this file to a ...
shubham's user avatar
  • 101
0 votes
2 answers
2k views

Finding the encoding of a text file containing weird characters

I recently received a file, of Turkish origin, where the file has some English words which I can easily read, and some weird characters. I wonder if this file is encoded, encrypted or sth else. I ...
Sean Goudarzi's user avatar
2 votes
3 answers
15k views

Reset insyde H20 bios admin password

I have a Lenovo G470, i3 processor(with integrated Intel hd 3000 graphics) with insyde H20 BIOS 40CN33WW (V2.19) (x64) whose bios is locked. Back story A year ago I had disabled UEFI boot and booting ...
Chemist's user avatar
  • 165
2 votes
2 answers
2k views

Chrome video decoding GPU or CPU

If I watch a video on the internet in the chrome browser, and the video is encoded with H265 or VP9 (or the future AV1), and I have a Nvidia GPU (GTX 1080): Is the video decoding happening on the GPU ...
Stefan B's user avatar
  • 123
1 vote
3 answers
29k views

My notepad txt file turned into weird characters

Some years ago I wrote some notes in a .txt file (plain text) on Notepad and when I opened it recently it appeared with these weird characters. I don't know at what point it turned out like that, but ...
Gouveia's user avatar
  • 13
1 vote
0 answers
765 views

Nvidia hardware H.264 decoder (nvdec with Gstreamer) is crashing

I have created an Azure virtual machine Nc6s_v3 which provide Nvidia V100 GPU card. I have set up the drivers following the instructions here https://docs.microsoft.com/en-us/azure/virtual-machines/...
Raju's user avatar
  • 111
-1 votes
1 answer
287 views

Reverse engineering unknown hex/binary representation to decimal

I am decoding a device that pumps out location data via network packets. Lets say we have want to decode altitude. The altitude packet is 4 bytes. So the info in hex is. 0x05 0x79 = 5.945313(meters) ...
fighter2132's user avatar
7 votes
2 answers
780 views

Can I crop an image without fully loading it into memory?

I managed to generate a PNG image with a fractal. The image is 65,536 pixels high and 65,536 pixels wide. It’s too big to be decoded into memory and displayed. It has probably a lot of unused space ...
matj1's user avatar
  • 99
0 votes
1 answer
755 views

FFmpeg Not Transcoding In Real Time

Been setting up a recording build for a friend to resemble mine, but I can't seem to get things to work in real-time despite sufficient (as far as I can tell) hardware. System specs: 8600K, GTX ...
ninbura's user avatar
  • 279
1 vote
3 answers
3k views

Old GPU (HD 3000) Can't Play 4K Videos

I subscribed to a TV series website and it only provides videos to download in 4k resolution and I have a Core-i7, intel HD 3000, 8 GB RAM laptop. VLC, Quicktime, MPV, WMP all freeze playing 4K. I can ...
Shayan's user avatar
  • 1,594
0 votes
1 answer
922 views

Decoding a uuencoded file

There is a data set freely available here: http://wwwmpa.mpa-garching.mpg.de/hydro/GRAV/GRAV2D/index.html in the last line under the word "here". Unfortunately it is uuencoded, and I am unable to ...
Halinka's user avatar

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