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Questions tagged [transcoding]

Transcoding is the direct digital-to-digital data conversion of one encoding to another (video and audio format)

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Missing audio and problems playing FLV video converted from 720p .mov file with FFMPEG

I have some .mov video files recorded from a JVC GC-FM1 HD video camera in 720p mode. I have FFMPEG running on a Linux box that I upload files to for encoding into FLV format. The video appears to be encoding ok, but there is no audio in the…
undefined
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Asterisk module app_transcoder failed for libavcodec.so (undefined symbol avacodec_init)

I am trying to integrate the 3G video gateway with Asterisk(1.4.0). When i load the module "app_transcoder.so" (which does the actual video transcoding), then asterisk hangs and with "asterisk -vvvvvc" i got asterisk: symbol lookup error:…
Riad
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Scenecut detection and consistent GOP size - adaptive streaming

Sample Command: -map 0:0 -f mp4 -vcodec libx264 -preset slow -profile:v main -vf scale="640:trunc(ow/a/2)*2" -vb 700k -minrate 650k -maxrate 750k -bufsize 10000k -an -g 48 -x264opts keyint=48:min-keyint=10:scenecut=40 -flags +cgop -sc_threshold 40…
Tarun
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AVAssetExportSession only exporting audio

I am trying to export a QuickTime movie file with a video track in DNxHD and a couple of audio tracks in "Integer (Little Endian)", into a natively supported codec, like h.264. The export succeeds with the code below but unfortunately the output…
apalopohapa
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Issues with parallel and transcoding video

Hey guys I'm getting a weird error even though set -x isn't showing me anything noticeable. It looks like my cmds aren't actually getting processed by parallel, or at least that is the assumption. the script below should do the following find all…
ehime
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Understanding CPU usage in linux using "top" command for VLC usage

I have 2 quad core processors and I cant seem to understand what "top" is telling me. I run a VLC transcoding application and i currently transcode 8 streams and "top" shows me that I am using 200% of my CPU. Now for a Pentium 3 that would be…
user3130013
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Progress bar in VB 6.0 from Transcoding process in FFMPEG

firts excuse me for my English it`s super Freak. Sorry I have a big problem , i need finish my applicatión in VB6.0 for a test in my High Schooll and i can`t find the solution, My app open a FFmpeg.EXE file which open a cmd window Prompt and start…
Ramses1974
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video encoding trans-coding in c#

I am allowing users to upload video files in various formats, such as: .avi, .mpg, .mpeg, .flv, .mov, .m2v, .m4v, .mp4, .rm, .ram, .vob, .wmv, .bin ... My only restriction so far is file size up to max 512Mb. Evidently, some of the files are HD and…
Nathan Kummel
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Transcoding rtmp to hls

I did this steps for transcoding my rtmp live streaming to hls on ubuntu 12.04: apt-get -y install build-essential checkinstall git libfaac-dev libgpac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev librtmp-dev libtheora-dev…
Mohammad Ali Fayyaz
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convert video files to flv format in c#

How do I get video file from user and convert it into flv format?
Aswan
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FFMPEG Covert from MP4 to WEBM only working on some files.

I have tried the following URLs, using the streamio wrapper for FFMPEG. The URL's are http://static.bouncingminds.com/ads/5secs/baileys_5sec.mp4 (works) http://techslides.com/demos/sample-videos/small.mp4 (doesn't work) For the latter I get the…
ShivamD
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Transcode to virtual device/memory in VLC

I have a unicast h264 stream from a video transmitter. Now, I would like to view the stream in a web browser using HTML5s tag. For this, I have to transcode it first via VLC to theora/ogg and then streaming it out as a HTTP stream. This works fine…
Atrotygma
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DVB-S streaming from source to media server

i am streaming some FTA channels from http://www.tbsdtv.com/products/tbs6985-dvb-s2-quad-tuner-pcie-card.html using mediaportal http://www.team-mediaportal.com/ and then i get rtsp url from mediaportal of channel i timeshift and vlc i can send that…
Rohan Zakie
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FFMPEG: i need audio channels 7 & 8 to be the main audio track for a video

I have a video with 8 channels of audio. I need tracks 7 (Left Stereo) and 8 (Right Stereo) to be the audio for the video (which I'm converting to flv). I've tried playing with -filter_complex and the join, amix, and amerge filters, as well as the…
lo_fye
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transcoding movie files between android and ios devices

I have an iOS and Android app that allows users to capture videos and post on our server, then allows them to email the videos to other members. Problem is videos taken from iOS devices do not play on Android devices, I think the reverse is not a…
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