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Questions tagged [transcode]

105 questions
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restcomm call between webRTC client and a normal SIP client ends with 480 message

I'm trying to setup a call between webRTC based client (olympus) and a standard one (x-lite i.e.). The call is failing (480). I believe it is because of SDP negotiation failed. Currently I use standard telestax mediaserver setup. Can restcomm be…
Hubert Zegota
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Using ffmpeg with audio in a video

I am using ffmpeg to convert one video format to another: "ffmpeg -ac 1 -i vid1.mp4 -sameq vid1.avi" And I am getting the error: "encoding 6 channel(s) is not allowed in mp2" Now I understand what this means - and the transcoding works fine if I…
user7289
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error in one line Xerces program

The following application gives me an access violation on its first line, whats with that? // test.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include #include using…
Gungho
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ffmpeg partial transcode using -ss and -to

I am trying to achieve partial transcode using ffmpeg. The command I am using currently is: ffmpeg.exe -ss start-time -i source file -t duration -y -s 640x360 -b:v 1024k -vcodec libx264 -r 29.7 -movflags faststart -pix_fmt yuv420p …
Sharun
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mediaCodec android- How to do decoding encoding from buffer to buffer

I want to decode and then encode a video file. The example I found on bigflakes is using the Inputsurface for decoding. I want to directly provide the decoded data to the encoder as input. I am getting error that the output buffer from decoder is…
S K
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FFmpeg: Convert FLAC to mp3 and add album art in one step

I convert FLAC to MP3 using ffmpeg -i x.flac -f mp3 -vn -b:a 64K x.mp3 and I add album art using ffmpeg -i x.mp3 -i x.jpg -map 0:0 -map 1:0 -c copy -id3v2_version 3 -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" xx.mp3 Is…
Christian Riedl
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Couchbase transcoders thread safe

I have 2 services: A service that writes to couchbase db using incr operation. A service that reads the written record. I'm writing the second one in java and would like to use a pre-made decoder called LongTranscoder…
forhas
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MIDI to MP3 from terminal: Accessing channel volume

I'm writing a bash script that will be used to go through a ton of midi files and convert them into MP3s. Right now, I'm using timidity and lame for this, which works great: timidity myMidiFile.midi -Ow -o - | lame - audioOutput.mp3" However, I…
Speldosa
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Which lib is better Transcoder for live camera ? ffmpeg vs intel media sdk

I would like to do a performance comparison between Ffmpeg and Intel Media SDK in transcoding. I have to write a new application that will do the following. Receive frames from MJPEG, MPEG4 and H264 cameras. Transcode the frames. Output will be…
OrionSoftTechnologiesSydney
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Encode video of powerpoint presentation for HTML5 playback

We have a number of powerpoint presentations that have been converted to 16:9 aspect ratio and then converted into mp4 "master videos" with an "apple TV" 720p profile. These powerpoint presentations are voice annotated. So in essence, we show a…
user2291446
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Batch script to transcode MXF video files using VLC (mac)

I thought this morning i found the answer to my big headache, but apparently I'm not smart enough when it comes to coding: http://forum.videolan.org/viewtopic.php?f=12&t=98694 My problem is the following: I'm a video editor and last week both of my…
Noli
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Streaming, recording and transcoding in C#

I'm interested in developing an application that is able to grab network streams, transcode (preferably JPEG2000 & H.264) and/or record them and streaming from file. I've already looked at .net wrappers for ffmpeg (which are mostly incomplete and/or…
Neurodefekt
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Issues when transcoding updated images via Batik

I have been writing a GUI wrapper (in Java) for a command line program that generates SVG images under one filename. Unfortunately, the underlying program fails to close the svg tag when generating a new image, so I am using a FileWriter like so to…
Oscar Barrett
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"Transcode" copying video/audio codec

I took some very shaky video, and went online to try and find how to stabilize it. I came upon this nice blog that uses transcode for it. Following the blog instructions it worked very nice, but the end result had a lot of compression artifacts.…
JunCTionS
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How to use CUDA to transcode video files in Linux

Now I'm looking for methods to accelerate transcode process in Linux. At this moment, I'm looking into CUDA and successfully compile the driver and SDK things in Linux. However, I can't step forward because NOT any software or toolkit in the field…
sky609
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