search for: transcoder

Displaying 20 results from an estimated 1432 matches for "transcoder".

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2002 Aug 28
Debian mp3->vorbis transcoding
In case there are any Debian developers around here, I wanted to point out message <> on the debian-devel list this morning. Another Debian developer is proposing to submit an mp3->vorbis transcoding program for inclusion in Debian. I have objected to this on the grounds that the resulting vorbis files will sound like crap, and I have also pointed
2010 Feb 19
transcoding with TC400P
....610963] zttranscode: Loaded. [ 7.618969] wctc4xxp: tc400b0: Attached to device at 0000:02:07.0. [ 7.618969] firmware: requesting zaptel-fw-tc400m.bin [ 8.111186] ACPI: PCI Interrupt 0000:02:07.0[A] -> GSI 19 (level, low) -> IRQ 19 [ 11.400359] wctc4xxp: tc400b0: (G.729a / G.723.1) Transcoder support LOADED (firm ver = 6.12) [ 11.400359] wctc4xxp: tc400b0: Installed a Wildcard TC: Wildcard TC400P+TC400M [ 11.400359] zttranscode: Registered codec translator 'DTE Encoder' with 92 transcoders (srcs=0000000c, dsts=00000101) [ 11.400359] zttranscode: Registered codec translator...
2003 Oct 27
Is transcoding a bad thing?
Hi there, up till now I had this two-box setup in mind: * no.1: public IP * no.2: private IP, registers with no.1, serves a small office with clients behind NAT See we'd get something like this: SIP client (GSM) --> *1 --> IAX2 (iLBC) --> *2 --> G.711 --> MGCP UA The codec of the SIP client (on the Internet) I don't have full control over, that depends on the
2009 Aug 21
codec_dahdi.c: Failed to open /dev/dahdi/transcode: No such file or directory
I have a CentOS release 4.7 box running asterisk- with dahdi-linux- and dahdi-tools-2.2.0 I regularly get these messages, is this something i should be worried about? [Aug 21 01:05:07] VERBOSE[4343] logger.c: => (ITU G.726-32kbps G726 Transcoder) [Aug 21 01:05:07] ERROR[4343] codec_dahdi.c: Failed to open /dev/dahdi/transcode: No such file or directory [Aug 21 01:05:07] VERBOSE[4343] logger.c: => (Generic DAHDI Transcoder Codec Translator) How to fix this ? Google was not my friend this time :)
2006 Jun 03
Meetme versus app_conference
As stated here: A Meetme room uses Ulaw as the audio codec, so if the other channels use different codecs, then * will transcode. Does the app_conference application works the same way? Or if i have SIP/g729 users and i create a conference with other users also at g729 asterisk will not transcode (when using app_conference)?
2007 Aug 21
TC400B and show transcoder
...I have tried asterisk 1.4.9, 1.4.10 and along with zaptel 1.4.4 and addons 1.4.2. The zaptel modules all apear to be loaded correctly (loading wctc4xxp loads up zttranscode and zaptel). Dmesg shows that the card has been found: Registered codec translator 'DTE Encoder' with 92 transcoders (srcs=0000000c, dsts=00000101) Registered codec translator 'DTE Decoder' with 92 transcoders (srcs=00000101, dsts=0000000c) Zaptel DTE (g.729a / g.723.1 5.3kbps) Transcoder support LOADED (firm ver = 56) Found and successfully installed a Wildcard TC: Wildcard TC400P+TC400M and the ca...
2003 Mar 02
Hello, Does asterisk do transcoding when the call goes through the system, codecs are the same but signaling protocol is changed. example: SIP with GSM ---> IAX with GSM What quality destruction happen when I use transcoding? I know this is not a concrete/precise question, but I would like to know how is it in general. What CPU performance is needed for transcoding 30 channels e.g. from
2013 Apr 12
Network based transcoding
Hello Everyone, We are looking for solutions where the transcoding is abstracted away from our * box (i.e., to the network layer) using some carrier grade gateway, or router. The reason for my post is to know about solutions people have used in the past, and how it fits into their overall architecture. Our transcoding needs consists mainly of u/alaw <-> g729, and gsm would also be good....
2009 Aug 11
MixMonitor and Transcoding..
Can't find an answer to this, but maybe I've not looked hard enough ... Does MixMonitor work without transcoding? ie. if I have a g729 stream passing through and I'm recording it with e.g. MixMonitor(/dump/filename.g729,b) and specify g729 in the filename, does MixMonitor transcode both legs of the stream to a format it can then "mix" then transcode it back to g729 to
2008 May 12
Which sound file formats?
I've got the text files created -- thanks to Russell Bryant -- for re-building the core and extra sounds using another voice but I'm not sure which formats to actually build. This will be a small/personal system using so will only have SIP connections. The /var/lib/asterisk/sounds/ directory contains .alaw, .g722, .g729, .gsm, .ulaw, and .wav. What are the minimal
2008 Feb 04
Dears Any one knows a standalone voip transcoder software name,not an ip pbx. What I want is to transcode the incoming sip calls from g711 to g723 or ilbc or g729 ..... and forward it to a media gateway .. Regards Khaled chehab ********************************************* No employee or agent is authorized to conclude any binding ag...
2009 Sep 09
CLI file convert from alaw to g729 with TC400B transcoding card results to an empty file
Good afternoon, I'm trying to use the CLI command file convert on an Asterisk 1.4.26 server with a TC400B transcoding card. The transcoding card is working well for calls but I have some trouble converting sound files from alaw to g729. The command creates empty file as you can see below... CLI> file convert /var/lib/asterisk/sounds/fr/service_notactivated.alaw
2001 Aug 05
Transcoding listening test
As far as I can see, transcoding could be usefull for people who do not primarly care about quality but about filesizes. One could assume that such a user would have a collection of mp3's at 128kbps or higher bitrates, and uses an encoder like BladeEnc or Xing. He wants to take uses of ogg's supposed quality and transcode his 128-or-higher files into 96 or 112kbps oggs to save diskspace.
2023 Apr 15
Transcode lossy to further reduced lossy to stream over Icecast
Situation:? * remote virtual server with very little storage (estimate: I can spare about 40G for music) * local music collection of ~80G in all sorts of formats - lossy in varying quality, some lossless too Vision: * stream my whole music collection randomized so I can listen to it anywhere Plan/Idea: * Locally transcode everything to one format that results in files that are?
2010 Jul 04
Asterisk for transcoding
Dear ALl Can we use Asterisk for only for transcoding?. if yes how many concurent call we can transcode with help of Astetrisk? For this we only need to config SIP.conf or any other file too. Thanks Amit-- -------------- next part -------------- An HTML attachment was scrubbed... URL:
2013 Feb 16
Disable transcoding
Hello I use asterisk realtime, and I can set the order of codec preference on my realtime allow column. If I could disable transcoding, then I can always ensure a passthrough of the common codec from origin to destination without transcoding (expensive on CPU) - and more or less, force the codec to use by setting the codec preference So, can I disable transcoding?
2023 Apr 15
Transcode lossy to further reduced lossy to stream over Icecast
Opus or AAC will give you comparable results at reasonable bitrates (~128k). Though, I would suggest finding a way to get more storage. You could upload to Backblaze B2 or AWS S3 for pennies, if your current host won't let you upgrade. On Sat, Apr 15, 2023 at 3:36?PM D.T. <ohnonot-github at> wrote: > Situation: > > - remote virtual server with very little
2019 Sep 05
AST-2019-005: Remote Crash Vulnerability in audio transcoding
Asterisk Project Security Advisory - AST-2019-005 Product Asterisk Summary Remote Crash Vulnerability in audio transcoding Nature of Advisory Denial of Service Susceptibility Remote Unauthenticated Sessions Severity Minor
2023 Apr 16
Transcode lossy to further reduced lossy to stream over Icecast
I created some test samples and transcoded to FDK AAC and libopus at fairly low bitrates - I cannot recreate what bothered me about Opus & noisy music previously. It also seems I cannot tease ffmpeg into encoding FDK's AAC with VBR. As it stands, Opus clearly wins in this scenario.* Q: Is it possible to stream in variable bitrate? * ffmpeg -i "$track" -vn -ac 2 -c:a libfdk_aac
2016 Apr 08
Icecast and AAC streams
...eam is 128kbps and will never go higher. Is Liquidsoap still a good idea? On Fri, 04 Mar 2016 14:48:41 +0100, you wrote: >Great tool to do this: liquidsoap > >Keep in mind that transcoding degrades the quality of tour stream dramaticly. You can avoid this by feeding liquidsoap or stream transcoder with a highquality or even transparant stream and trancode this to the different streaming formats you like. I used to do this by feeding a flac stream to liquidsoap and transcode this to 5 different stream formats i needed. But you might be fine if you feed your transcoder with 320 kbps AAC and tr...