Trinity video format

[n0t]

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)

[Rikiki_Forum]

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.

[adamwolfe]

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]

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)

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.

[n0t]

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...