Hi,
I'm trying to record both uplink and downlink speech streams of my XDA II during a phone call.
I tried many different things but couldn't get working any of them:
- I first tried the waveIn/waveOut API and thought, in the first place, that I was able to record the incoming and outgoing audio streams, mixed together. But I quickly realise that what I was recording was only the sound from the mike, and that the speech of the downlink speech was going from the speaker through the air to the mike. So I was recording my own voice (from the mike) and the voice of the other part (from the mike too as the sound was going from the speaker to the mike).
- Then I had a look to the TAPI API. I was able to answer calls but it was impossible for me to access to any of the audio streams. I think it's a limitation of the device, and that the TAPI API hasn't been fully implemented on the XDA2. But I can't be sure of that.
- Now I'm trying to use RIL, which seems to be a layer below the other APIs. I believe it might be possible to access to the audio streams, but I have no idea how.
- I also think that the audio data of both streams must be stored in the memory, somewhere in the device. But where?
Any ideas or suggestions on this? Do you think I should keep investigating RIL?
Thanks a lot
Ben
There must be a piece of software that records for longer than the ones I currently have which is the standard Notes voice recorder and TNT's. I need one that will record for the duration of you card or something, its majorly important
Thanks guys!
Try Resco Audio Recorder, or Vito Audio Notes
I've seen some information spreaded in the forums about video recording on Trinity, and had some troubles watching them on a desktop computers, so here is the results of my research, and the doubts i Still have:
Videos recorded on trinity with maximum quality CIF:
resolution:352x288
Framerate:15fps
container: MP4 (3GPP)
Video codec: MPEG4 (ASP)
Audio codec: AMR - NB (Narrowband)
To properly play videos on your desktop computer you need to install a directshow filter called MP4splitter.
-It is possible to convert video to AVI format (lossless) using mp4cam2avi, but it doesn't work with audio.
-The AMR format is not easy to edit or to transcode to other formats, and it's not possible to use as audio stream on a AVI container (not sure).
Questions
Is there a program to merge several mp4 together lossless (no re-encoding)?
Is it possible to set up another resolution to be used on the video (i.e. 640*480) as this is not a hardware limitation?
Is it possible to use another codec for the audio stream?
Is it possible to use another framerate?
- By editting registry I'm able to change framerate (HKLM\Software\HTC\Camera\Recparam)
Mediacoder
I use Mediacoder to convert many format of video (recorded on a dvd from TV...) on my htc : choose MP4 and use TCPMP to read it.
Video Conversion
Hi n0t,
Have a look at NCH Software - www.nch.com - and find a program called Prism Video Converter. It can be downloaded as a trial and expires after a while but long enough to try out. It works perfectly and is very simple to use. NCH has a wide selection of software, especially conversion from one format to another. Some programs are free but all are downloaded as trial versions.
Hope this helps
Adam
n0t said:
Questions
Is there a program to merge several mp4 together lossless (no re-encoding)?
Is it possible to set up another resolution to be used on the video (i.e. 640*480) as this is not a hardware limitation?
Is it possible to use another codec for the audio stream?
Is it possible to use another framerate?
- By editting registry I'm able to change framerate (HKLM\Software\HTC\Camera\Recparam)
Click to expand...
Click to collapse
Is there a program to merge several mp4 together lossless (no re-encoding)?
- MP4Box is a command line that does it, YAMB is a GUI that works fine with it (and it's free). It can split, join and extract streams from MP4 or 3GP container. This way it is possible to edit lossless the video streams.
-I want to be able to edit and apply some filters to the clips with virtualdub. To transcode the video stream to an avi container (lossless) I can use MP4Cam2Avi, Mediacoder, or Super. But I have to convert audio to PCM WAV to use it in virtualdub, as AMR can't be used in an AVI.
Stream Video
Is it possible to make a live video broadcast from trinity (not using videocall)?
This way with an internet connection, it would be possible to send a stream to a computer anywhere...
how to change the default win mobile encoding from wav to other formats like mp3 and amr the thing is most people dont have devices with support for wav its mostly mp3 and amr and i use this IM which is written in .net and everytime i want to send an audio recording to someone with the java version of the client they cannot open it.
I'm writing a recorder using the ANSI C code for AMR from 3gpp, but it takes too much time to encode one frame on my Vox, and that makes real-time recording impossible. So is there any way to access hardware codec?
I can find a GSMAMRDLL.dll and a gsmamrenc.dll in my phone, they have functions like gCreateGsmAmrEncoder and gCreateGsmAmrDecoder. I googled them and got nothing.
thanks alot!