Hi all!! Have been searching for a method of recording sstv in the field and post processing it at home. MMSSTV uses a .mmv format. It (the audio format)doesn't look well supported. I'd prefer something like .wav which is pretty plain jane.
Any ideas? Not married to MMSSTV, just the first one I'd found that was easy to use. Thanks, Norm
Google Scanner Recorder or ScanRec, this may fit the bill...
Roger WA1KAT
On 8/1/2011 7:47 AM, normn3ykf@stny.rr.com wrote:
Hi all!! Have been searching for a method of recording sstv in the field and post processing it at home. MMSSTV uses a .mmv format. It (the audio format)doesn't look well supported. I'd prefer something like .wav which is pretty plain jane.
Any ideas? Not married to MMSSTV, just the first one I'd found that was easy to use. Thanks, Norm _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
The real problem at this point is format. The sstv software uses an odd encoding. I can't find any converters.(from .wav to .mmv) What to do..
The solution is simple. As long as the quality is OK it doesn't matter what format you record and save in as long as you can play it back on your PC.
Play back the file with whatever app is required, feed your PC sound card output into its input (or alternatively use something like "Virtual Audio Cable") and use MMSSTV (or any other such program) as normal.
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-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of normn3ykf@stny.rr.com Sent: 01 August 2011 13:54 To: Roger Kolakowski; amsat-bb@amsat.org Subject: [amsat-bb] Re: sstv reception
The real problem at this point is format. The sstv software uses an odd encoding. I can't find any converters.(from .wav to .mmv) What to do..
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hi, I don't think that it is quite correct to say you could record in "any" format. Straight out old fashioned analogue (for example tape) or any other loss less recording system would work OK. For PC recording you need a system that does not compress the data stream to reduce file size (eg .wav ). You are unlikely to have much success with systems that throw away much of your data in order to reduce file size (eg .mp3). The down side of loss less recording systems is the huge file sizes that are quickly generated,as you can see by recording a favourite song with ..wav and then with .mp3... something has to give to reduce file size. Most of the sstv programs have the facility to record of air and then save the resulting decoded file in a much reduced "digital" format. (I know... this is a gross simplification and I apologise in advance to the experts!). My choice in a more esoteric professional field is to record our data using .wav files using laptops and large portable hard drives, mainly because it's a rare pc that can't handle .wav files! Just my 2 cents worth.
Cheers, Don ZL1THO.
Don, Your explanation is much what I expected. Was hoping to find a sstv program that will accept .wav files. Much easier to create in the field. My setup is totally portable. Usually use a netbook running Audigy to capture audio. Will have to run mmsstv whether I like it or not.
In any case, I'll be trying sstv for the first time live tonight. Looking forward to a decent pass so I can get a nice pic. 73 de Norm n3ykf
From the MM HamSoft website
(http://hamsoft.ca/pages/extras-add-on/mmv2wav.php) under the "Extras & Add-ons" tab:
JE3HHT Mori-san developed great software programs, MMTTY, MMSSTV, and MMVARI, for radio amateurs. Kudos to Mori-san.
MMTTY, MMSSTV and MMVARI have a facility that records the RX signals into an audio file and even plays them back to tune the program parameters. The audio file, however, is in the MM proprietary format named MMV, and cannot be played back with common players, such as Media Player.
This program converts the MMV audio file to the WAV format.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of normn3ykf@stny.rr.com Sent: 1-Aug-11 04:47 To: amsat-bb@amsat.org Subject: [amsat-bb] sstv reception
Hi all!! Have been searching for a method of recording sstv in the field and post processing it at home. MMSSTV uses a .mmv format. It (the audio format)doesn't look well supported. I'd prefer something like .wav which is pretty plain jane.
Any ideas? Not married to MMSSTV, just the first one I'd found that was easy to use. Thanks, Norm _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (5)
-
David Barber -
don -
normn3ykf＠stny.rr.com -
Roger Kolakowski -
Ron G. Seiler