Questions tagged [encoding]

The fine art of converting letters into numbers. ASCII, ISO Latin-1, Unicode, EBCDIC… There are dozens of currently used encodings and converting between them is now a witch craft.

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Decoding Thread-index/ConversationIndex email Header

I have been trying to decode Thread-Index or ConversationIndex, by following this link I have build conversation code... It works fine but problem is when finding differenceTime for childBlocks if ...
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How can I join/concatenate multiple Videos with different video formats / encoding using mencoder or ffmpeg using command line in linux? [duplicate]

How can I join/concatenate multiple Videos with different video formats / encoding using mencoder or ffmpeg using command line in linux? I have multiple videos in different fps (eg. 29 and 19) and ...
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Is it possible to recreate webms with a broken duration?

I've seen a few webms that have very unusual durations, even in the negatives. I've been trying to recreate it with ffmpeg, but I don't know enough of that program to make it work, if it would work at ...
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Does it require less electricity to hold a zero bit in RAM than a one bit? [closed]

Someone I know posited an idea that I instinctively think (know?) cannot be true, but I can't seem to figure out how to explain why not. The idea is based on the assumption that more electricity must ...
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Converting VP9 webm to VP8

I wonder how can I convert VP9 webm to VP8 with FFmpeg or Matroska (matroska would be better) without changing any kind of setting? I just want the output to be exactly same as the input but as VP8 ...
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Bulk font-replace double-wide Chinese-encoded fonts?

Goal: I'm trying to script or use a built-in operation to bulk replace fonts within a PowerPoint file (a set of files, really). Steps/code: I've found the com object code to create a powerpoint ...
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How to transfer files between Windows and Linux via a cloud drive without messing up the names?

Because Windows and Linux use different encodings (I think CP-1252 and UTF-8 respectively), when I upload a file in a non-ASCII language to a cloud drive from one OS then download it in the other, the ...
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ratecontrol_init: can't open stats file during 2-pass encoding

I am trying to do a 2-pass encode for a target file size and keep getting an error message when starting the encode. Strangely, sometimes if I close and reopen ffmpeg I can just copy paste the exact ...
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decode 7zip tar archive that was encoded wrong

I was moving some files from a Windows 7 PC to a Windows 10 PC. I used 7zip to add all the files to a tarball. Some of the files had Greek characters in the filename and content. I moved the tar file ...
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FFmpeg: Error when trying to use encoding options copied from Mediainfo

I want to encode different MKVs I have and I want to use the settings which I got from an existing encode via mediainfo: Writing library: x265 Encoding Settings: cpuid=1111039 / frame-threads=4 / ...
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How to localize filename encoding in LG WebOS smartshare and linux console?

I have a samba server with my films library, all the filenames are in Russian literals. I want to use my samba server in my TV LG WebOS Smartshare app, so I could watch movies right from my tv, ...
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Renaming unknown encoding filenames to UTF-8

I have a set of files extracted from a Bandcamp zip file. Their filenames have Spanish characters, such as "ñ" and "í". I am using Arch Linux, bash, and a urxvt terminal. I have already fixed my ...
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Audio encoding with 2 passes in ffmpeg

I have a video with a DTS audio file that I want to encode on android. Now, on my laptop I had an old GUI that had the option to encode audio using 2 passes. I have FFmpeg on android but I don't know ...
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Can anyone explain this encoding-related behaviour?

Encoding is not my strong point, despite having read quite a bit. There's a file I want to edit, its extension is .tdl, but that doesn't mean anything in particular. It is an XML file. The first ...
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Special characters and glyphs in xterm

Hello fellow people of the internet, I come to you today because i have an issue that i can't solve. I recently installed zsh and oh-my-zsh, and to use its beautiful set of theme, i need my xterm to ...
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How to use variables in NGINX RTMP and what do they do?

I've been trying to get my head around how the variables work specifically $name and $app. What are the benefits of using variables within a multi-stream and multiple stream qualities? This is the ...
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How to redirect input in Powershell without BOM?

I am trying to redirect input in Powershell by Get-Content input.txt | my-program args The problem is the piped text is preceded with a BOM (0xefbbbf), and my program cannot handle that correctly. ...
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How does H264 encoding speed scale with concurrent video streams?

I am planning to buy a J3455B-ITX system with Intel HD 500 graphics (Apollo Lake), which is listed as being able to do real-time H264 encoding at 4kx2k/60p. I have a number of cameras running at ...
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FFMpeg trim video based on frame numbers (have code but audio isn't trimming)

I'm trying to trim and re-encode my videos based on frame numbers. The following works great for my videos -vf select="between(n\,$start_frame\,$end_frame),setpts=PTS-STARTPTS" however this doesn't ...
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How to prioritize subtitles in LAV Splitter?

I'd like to set defaults in LAV splitter. The default subtitles should be English [Full] in MPC-HC. And the default Audio Track should be Japanese [jpn]. How can I achieve that? PS: I can't post ...
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UTF-8 not working in excel

UTF-8 file encoding is not working when data is exported in Excel. For Trademark, when I used CP1252 its displayed properly but not with UTF-8 but even trademark symbol is present in UTF-8.Kindly help....
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803 views

Notepad++ save as UTF-16 file without byte order mark

Is there any way to save a file in Notepad++ using the UTF-16 encoding (little endian), but without adding the byte order mark? For example, if a text file is saved in notepad++ using the little ...
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Chrome: how to force use encoding utf-8?

There times I need to visit deformed websites who dont tell chrome which encoding it is. But chrome always choose a local encoding page. How to force chrome to use utf8 to display all such web pages? ...
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Handling multiple audio variants in HLS' via var_stream_map parameters

With the var_stream_map option, can more than one audio stream variant exist in a group? From the documentation, all examples point to the creation of multiple audio groups, one per audio stream ...
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347 views

Lossless VP9 Webm Encoding of PNG Sequence with Alpha in FFmpeg

I'm trying to encode a sequence of 32-bit 8bpc PNG images (RGB with an alpha channel) using the lossless VP9 codec with ffmpeg; specifically: ffmpeg -framerate 60 -i out%04d.png -c:v libvpx-vp9 -...
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FFMPEG Concat Video, Add Subtitle & Logo [duplicate]

I have two videos, one PNG logo and one subtitle file (.ass) What I'm trying to achive is to merge all these into a single mp4 file. I can do the logo and subtitle with a single video, but I would ...
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Encoding and an Emacs file

The code in http://www.cse.chalmers.se/~abela/ssft18/lec1/Prelude.agda gives rise to an encoding problem. For example → should be displayed →. Another example is â„•, which should appear as ℕ. I ...
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How to feed OpenSSL HMAC function with the counter via CLI for rfc4226?

I have problems feeding the counter needed to compute a one-time password with OpenSSL HMAC via cli. I believe my problem is with encoding of the counter.I cannot reproduce the test vectors in RFC: ...
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CPanel return javascript file with bad encoding

I have a webpage hosted in cPanel on my own VPS (with WHM). And after updating cPanel, the return Javascript file at the following URL is in encoded incorrectly: http://flexibilniobklady-jihlava....
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ffmpeg says “pcm_f32be codec not supported in WAVE format” yet a file is created

I'm trying to create a sine wave in .wav using ffmpeg exactly like this S.E. question: How to generate a sine wave with ffmpeg? For some sample formats it's working good but for big endian encoding, ...
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Windows 10 cmd prompt: cannot use German u-Umlaut (ü) in paths, and changing the code page strangely doesn't work

On my Windows 10 machine I am trying to run a "robocopy" command to backup files. Everything is fine as long as the paths (to folders to backup) do not contain letters like ö, ü, ä which whoever is ...
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FFMPEG (Synology) : Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

I'm trying to convert my avi files into mp4 so that Plex doesn't need to transcode them. I want to run it from my Synology NAS which has ffmpeg installed. When I run this command ffmpeg -i Pilot.avi ...
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BER decode SubjectAltName and CHOICE?

I'm having trouble working out the syntax when decoding a SubjectAltName in a TLS self-signed certificate. I believe the certificate is well formed. The trouble is, I don't understand how to decode ...
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How can I get text read aloud/into an audio format?

I would like something which will stream or output audio from a text/html file, for use while driving. If it needs to be run ahead of time, an output that can be converted to mp3 would be nice. ...
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Can I tinker with the encoding when using pdftotext to convert PDF to text?

Sometimes when I do pdftotext it results in perfect text. I assume this is because the actual unicode text data is embedded directly in the PDF itself, and simply read out. But other times (around ...
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How to securely decode an encoded URL? [closed]

I received an email from a trusted source with a hyperlink but the link is URL encoded. I want to try to decode it to inspect it because various browsers are rejecting it, perhaps it was mangled in ...
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How to change a file's encoding?

I am not sure if the question is the right one for my situation, but here is what I want to do: I've downloaded a .csv file with Chinese characters in it. When opened with MS Excel, the Chinese ...
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277 views

Aes256-cbc encoding/decrypting error

I have been using gibberish.aes javascript code to encrypt some strings but when using a password such as £ or á, openssl command line does not want to decrypt it and spits out randomness but it works ...
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202 views

including Angstrom and Greek letters in gnuplot?

I am using gnuplot and would like to get the symbol for "Angstrom" (iso encoding 305) and the Greek letter Delta (Symbol 104) in the plot. How can I combine the two encoding schemes when producing my ...
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hardcoding .srt subs with ffmpeg gives weird results

in short, I'm trying to hardcode .srt subs from an mkv file to mp4. But after the encode for some reason I think they get converted to .ass before being burned in and lose their formatting. Here's ...
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Video format/encoding to play in-browser

I have a video that I'd like to put on my web space to make available for people to watch. What I'm starting with is an .avi, which Firefox and Chrome both seem not to be able to play in-browser. I ...
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How to encode / decode files in windows?

I want to write a simple java program that reverses all the bytes of a file. It should corrupt the file by encoding and make it accesible after decoding. Is there something I need to be aware of? I'm ...
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How to enable Chinese encoding in NetBeans IDE?

I have NetBeans 11.0 on Windows 10. I added to netbeans.conf this flag: netbeans_default_options="-J-Dfile.encoding=GB2312 ... " Launched netbeans64.exe, also in project properties in General tab I ...
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Handbrake encodes forever

I'm trying to encode a movie (there are four different movies on the disk, two on each side of a DVD) and about half way through Handbrake gets stuck, and encodes forever. If I stop it and skip ...
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Performance impact of lowering 30FPS Webcam images to 25FPS in FFmpeg live Encoder

I'm writing some infos about FFmpeg Live Media Encoder and wasn't able to answer this question or find some information about. Assume i have a Webcam that sends 30 FPS to my PC and i use ffmpeg as ...
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What does an encoding speed of “[number] X” mean when using ffmpeg?

When I run ffmpeg using ffmpeg -i input.wav -c:a flac -compression_level 12 output.flac I get this result. Meanwhile if I run it using ffmpeg -i input.wav output.flac which gives you the ...
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Android Studio displaying white boxes instead of file contents

Recently my computer crashed when Android Studio was open. When I opened it agan it showed me that my Android Studio Settings couldnt be loaded and it shows this on the manifes Êþº¾ 2 8 * + , -...
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After installing Lyx packages, Python default encoding changed to cp1252, open() won't work

I've installed Lyx together with some packages. Now, as soon as I start Python, I get the following error: Failed calling sys.__interactivehook__ Traceback (most recent call last): File "C:\...
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36 views

Geonode not displaying encoding UTF-8

I'm trying to upload shapefile datasource to Geonode 2.10rc5. It successfully upload, but I found character encoding problems. Shapefile does contain characters UTF-8 when the client display encoding ...
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Apache NetBeans 11.0 Menu Bar is displaying junk text

Just installed Apache NetBeans 11.0 on Windows 10. I've noticed that the menu bar text is completely messed up. Here is a picture of the problem: Is this an encoding issue? How can I get around ...

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