Questions tagged [decoding]

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ffmpeg : av_read_frame don't return data and i can't convert picture with sws_scale

I am trying to decode a h264 video stream with ffmpeg and I have a problem when using av_read_frame. No data is put in packet->data. spy on packet I want to convert pic in YUV to RGB with sws_scale ...
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146 views
+100

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) Back story A year ago I had disabled UEFI boot and booting from Pendrive and ...
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1answer
25 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 ...
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1answer
948 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 ...
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0answers
319 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/...
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1answer
64 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) ...
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2answers
176 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 ...
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0answers
408 views

How to Encode or Decode 3D mvc Videos, Using ffmpeg/x264

1.I have downloaded a half SSB 3D video from YouTube. I want to extract 2 videos (Both Left & Right View Separately) from Source File. How can I do that? I intend to use ffmpeg or x264 libraries. ...
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1answer
354 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 ...
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3answers
2k 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 ...
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0answers
56 views

Import FFMPEG Library for Audio Editing App

I'm currently making an audio editing app that can merge mp3 files and adjust volume at specific time. Is it possible to import latest ffmpeg library for audio editing? like amerge,concat, amix and ...
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1answer
321 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 ...
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1answer
3k views

Elgato Game Capture. CPU or GPU for encode/decode?

On my old PC that I use for my Elgato, I am unsure wether I need to use my CPU or GPU for Encoding and Decoding. The CPU is a Core2 Duo E6550 @2.33GHz. The GPU is a GT 730. Ya, it's pretty bad. My ...
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1answer
892 views

Open unknown type of file .REF

I need help opening some files I got. I don't know the proper way to open it, all I know is that it's text based, as it's CAN-BUS info (Digits, 01 0F 3F 4D, etc [in example]). It may be encrypted ...
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1answer
1k views

How to decode this seemingly GBK-encoded string?

I have a .eml email file containing a MS-Word attachment: ------=_Part_239376_662463351.1415605722579 Content-Type: application/msword; name="=?GBK?B?1cK5scf4s8e53L7WudjT2s34wufT38fp0MXPoteo?= =?...
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1answer
4k views

Is it possible to decode 'octet stream' .bin file?

Tidal.com streams flac files, but it does not provide with file download, which is what I want. As you would expect from a big company such as Tidal, upon my inquiry, its support service in an utmost ...
4
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1answer
10k views

FFmpeg - PNG / JPG - Invalid data found when processing input

I am trying to add a watermark to a video with FFmpeg. I have a custom build of FFmpeg that I am creating with a view to keep the binary size down. I seem to have excluded the ability for FFmpeg to ...
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0answers
161 views

How do I view an AVI file that requires GTCC codec?

I have pretty much tried every type of decoder package out there (K-lite, CCCP, Satsuki, etc.) but no luck. I used an old webcam back in the early 2000s when recording. Really need to know what this ...
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1answer
2k views

How to convert ADPCM to wav in Windows?

I have the following frame format of my ADPCM data The frame format of the ADPCM is # byte | Contents ---------------------------------------------------------- 0 | Encoder state: LSByte ...
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0answers
2k views

How can I reduce latency on VLC

I 'm working on a video streaming application. Server is a Linux machine (ffmpeg-ffserver) and client is a Windows machine (vlc player). There is a latency of about 6 seconds. Despite the fact that ...
20
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1answer
19k views

ffmpeg - How to copy|extract encoding settings from existing media file?

I wished to be able do this multiple times now so I ask. If I have an existing video or audio file, ffmpeg, mplayer and other media players can detect at least some of it's "propreties" like ...
3
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1answer
16k views

Why does FFmpeg decode a raw YUV420p video?

Why does FFmpeg decode a raw video in the YUV420 planar 8 bits pixel format, when it's also encoding the video using the same YUV420p pixel format? I've ran a couple benchmark tests encoding only raw ...
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3answers
2k views

Is it possible to decode such filenames?

Sometimes, when you upload your photos to certain social networks, they change your photos' filenames from something like pchelka_mia.jpg to ze58dadc2.jpg. I tried to delete a photo and software ...
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1answer
5k views

Is Hyper-threading important in Adobe Premiere CS 4 - 5.5?

I have a copy of Adobe Premiere Pro CS 4 that has trouble playing back 1080p HD H.264 when I'm editing it on my C2Q Q8200 / 8GB RAM machine. It's really hard to work with video when you can't even ...
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0answers
191 views

“Decode” messages sent through skype mobile

I was in a group chat with my friends on skype, and they were sending messages such as: 💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩💩 It shows up as just a bunch of squares... how can I decode ...
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3answers
152 views

Does AMD Support on-die video decoding?

Do any AMD processors support on-die video decoding in the same vein as the Intel core series? If so, can anyone point me to any articles that compare the two?
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1answer
95 views

Naming confusion : Why it is not called Decoding but Encoding in every browser?

In browsers such as Firefox, Chrome and IE, there is an option called Encoding. It is used to decode the HTML documents into different languages. As far as I know, say, if I choose, "Encoding (...
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3answers
3k views

Is it illegal to use software video ripping software such as HandBrake, AnyDVD, etc? [closed]

Is it illegal for one use a ripping and decoding software to rip his or her own DVD collection? Does the Digital Millennium Copyright Act make it illegal? I was always under the impression that a ...
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2answers
6k views

ffmpeg hangs when creating a video

I am trying to insert an audio channel with a video: first of all I extract the audio from the original video for processing: ffmpeg -i lotr.mp4 lotr.wav I then extract all frames for later ...
2
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1answer
613 views

audio: No such file or directory

I am trying to decode an mp3 to a raw file. I am trying to use madplay to accomplish this. I am running Debian Etch kernel 2.6.26-2-amd64. I installed madplay using apt-get install madplay. I am ...
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1answer
2k views

Re-encoding of mp3 files and quality loss

If I decode and re-encode MP3 file with the same settings, should it be similar to the original? Re-encoding may be useful when dealing with damaged mp3 files. When I just play them (with mp3lib) it ...
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2answers
533 views

Audio driver on Mac OS X sounded like it had a bit crusher on it… reset SaffireMix parameters and it went away. What happened?

Does anyone else use a Saffire Pro 24 audio device, or similar Focusrite/Saffire device for an audio I/O? Gradually over the last week it has sounded like my Mac's audio system has descended deeper ...