Transcoding is the direct digital-to-digital data conversion of one encoding to another (video and audio format)
Questions tagged [transcoding]
372 questions
9
votes
4 answers
Can Amazon Elastic Transcoder concatenate two videos
That is, take foo.mp4 and bar.mp4 and produce foobar.mp4, which is simply foo.mp4 followed by bar.mp4? (For extra credit, if it can do this, can it also combine foo.mp4 and bar.mov?)
I might also want to do some other transcoding things, but right…
Jim Miller
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9
votes
1 answer
Transcode HLS Segments individually using FFMPEG
I am recording a continuous, live stream to a high-bitrate HLS stream. I then want to asynchronously transcode this to different formats/bitrates. I have this working, mostly, except audio artefacts are appearing between each segment (gaps and…
rayh
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9
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1 answer
Expand (extend) a video to an specific duration
Do VLC or FFmpeg (or AVconv) have any feature to force the duration of a video to a certain number of seconds?
Let's say I have a... 5 minutes .mp4 video (without audio). Is there a way to have any of the aforementioned tools "expanding" the video…
Savir
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8
votes
2 answers
How do I preserve side data when concatenating files in ffmpeg?
I have multiple 360 videos that I'm trying to concatenate in ffmpeg. The command it self is pretty straightforward:
ffmpeg -f concat -i 0036_concat.txt -c copy -strict unofficial 36.mp4
where 0036_concat.txt is just a list of the individual…
user578895
8
votes
1 answer
Simple way to transcode mp3 to ogg in python (live)?
I'm searching for a library / module that can transcode an MP3 (other formats are a plus) to OGG, on the fly.
What I need this for: I'm writing a relatively small web app, for personal use, that will allow people to listen their music via a browser.…
Felix
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8
votes
2 answers
How to set up Nimble server without WMSpanel?
i can't figure it out, how to configure nimble server, there is lack of information/examples about: Setting my own Nimble server.
Scenario:
IP camera which streams live RTSP h.256 video.
Transmux/transport it, through my own Nimble Server.
And…
Noproblem
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1 answer
Is there some way to configure ffmpeg to include support for signed 24-bit WAV output?
24-bit sample sizes are not at all uncommon for PCM/WAV data, so I was surprised to see this:
Invalid sample format 's24'
... when I ran this:
ffmpeg -i input.oga -y -f wav -ar 44100 -sample_fmt s24 -ac 2 output.wav
When I look at the ffmpeg FAQ…
Greg
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7
votes
2 answers
Generate single MPEG-Dash segment with ffmpeg
I've been trying to implement a Plex-like video player that transcodes an arbitrary video file on-demand, and plays it with MPEG-Dash on a webpage. I was able to implement the client side player with the dash.js reference implementation, so it will…
woubuc
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Bitbucket server. REST API. How to enable "Transcode diffs" feature of the repository?
Does anybody know how to enable "Transcode diffs" feature in repo settings -> Repository details(checkbox named "git-enable-transcoding") in local Bitbucket server(stash) via REST API?
That's fine to create branch, clone & push changes, even make…
Nikolay Miroshnichenko
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1 answer
sox - how to create mp3 file with bit rate 16kbps
Currently the command used is
`sox input.wav -G -t mp3 -r 16k test.mp3`
But this is creating a file with bit rate 24.0 kbps.
How to make the bit rate of the out put file to 16.0 kbps?
Shamis Shukoor
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7
votes
8 answers
What transcoding services can people recommend?
A client of mine needs to accept a bunch of different video files and convert them to FLV. My experience with FFMEG on a previous project has highlighted that there will be some troublesome files.
Depending on the price my client will pay for a…
Adrian Lynch
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7
votes
0 answers
What data does AVAssetWriter metadata expect?
I am trying to add metadata to a video I am transcoding via AVAssetWriter. I tried creating AVMutableMetadataItem object, inserting it in an array and setting metadata property of the AVAssetWriter object. The result file does not include the…
Oren Meiri
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VLC inmemory transcoding
I want to do in-memory converting between audio formats supported by VLC. For instance from MP3 to PCM wave. Because of various reasons (speed, real-time streaming) it is not possible to write the file to disk, convert it and read it back. It all…
Tedd Hansen
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/* in transcoding from HTTP to gRPC
rpc CreateBook(CreateBookRequest) returns (Book) {
option (google.api.http) = {
post: "/v1/{parent=publishers/*}/books"
body: "book"
};
}
message CreateBookRequest {
// The publisher who will publish this book.
// When using…
Stacy Lin
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6
votes
1 answer
SVG to PNG text not showing properly - Arial font
I'm having an issue of converted PNG using Apache Batik is different when there is a text with different font-family, like Arial. The issue occurs in the environment where Cent OS 6 running Tomcat 7 and Java 6.
The Java code used to convert SVG to…
Shantha Kumara
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