FireWire Capture DCT6412 PVR cable box [Archive]

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SpaceV

5th October 2005, 15:35

Hi,

I have a Motorola PVR DCT6412 from Comcast, it has 2 fire wire ports.

So far I managed to get the capture working in CAPDVHS and I can also switch channels on my PC (Xp sp2) with a seperate app.

I have not found an app that does both together and let me transcode into X264 or VP6/7 on the fly.

The other problem I have with CAPDVHS is, that it records the MPEG2 stream in a way DVDx or VDub cant understand. I can play the recorded videos in VLC or MS Media Player with no problem though.

Does anyobody have a better solution or can help me out here, that would be great.

THX.

communist

5th October 2005, 15:48

Have you tried opening those MPEG2 streams with DGIndex and frameserve them with DGDecode / AviSynth to VDub?

Also since you are just copying the stream to the PC I dont think there is any app that will allow realtime encoding to x264 or any other codec just like with DV over firewire (its just a copying process - not really 'capturing').

CWR03

5th October 2005, 16:09

Agreed, x264, or really any MPEG-4 codec, was never meant for "on-the-fly" encoding. Even if you could, in order to keep any decent quality you'd have to use a constant bitrate that would make an even larger file than MPEG-2. You're better off capturing in MPEG-2 and encoding later.

jggimi

5th October 2005, 18:56

Moving from analog capture to HDTV forum....

nebula8

11th November 2005, 18:13

This guide can help get your stream to VDub, and has some .avs scrypts.
http://replayguide.sourceforge.net/dct6412/
Works good for me so far.

puffpio

15th November 2005, 00:24

I also am recording from the firewire port out of my cable box

I frameserve using dgindex and then make an avs script.
dgindex also demuxes the audio...

but I want to cut commercials..can dgindex cut commercials before the frameserving? Or how can I cut the commercials in the video aND audio stream? I use the avs into h264, convert the audio to AAC and mux them back together

nebula8

15th November 2005, 07:23

but I want to cut commercials..can dgindex cut commercials before the frameserving? Or how can I cut the commercials in the video aND audio stream? I use the avs into h264, convert the audio to AAC and mux them back together
You could use the trim command in avisyth. Just load the original avs into VirtualDubMod to find your in-out frame numbers.

There is probably an easier way though... :hmmm:

puffpio

15th November 2005, 08:59

I thought about using the trim command or things like that in the avs script...but then if I had demuxed the audio ahead of time, then I would be screwed

Is there a way to demux the audio out of an trimmed avisynth clip?

I would prefer something that would directly edit the .ts transport stream...
or I can convert it to mpeg2 using hdtv2mpeg2 and if there is a tool to cut mpeg2's....

anyone know of anything?

nebula8

19th November 2005, 04:12

Go here, http://forum.doom9.org/showthread.php?t=49349&page=2
and read the third post down (made by FreQi). That should help your audio and editing problems.
It works well for me now.

puffpio

20th November 2005, 01:19

Yeah I just discovered ProjectX...the interface is kind of daunting..haven't tried cutting commercials with it yet, but we shall see.

unixfs

20th November 2005, 12:28

mencoder can do the all-in-one transcoding you are searching

brownstem

28th November 2005, 08:39

Has anyone experienced being unable to record certain HD channels via Firewire from the 6412 (I have Comcast)? I assume this is a 5c problem, but I'm wondering if there's a way around it. Thx.

nebula8

15th December 2005, 10:43

@puffpio

Another way I have learned to do the cuts and retain the ac3 audio is to demux the audio in DGIndex, then load the D2V in VirtualDubMod and add the audio in the streams list, and set the delay.
Then do editing.
When done, go to streams and demux the audio and then delete the audio out of the streams list and encode the video.
The resulting audio file has to be run through BeSliced to 'fix' the errors at the edit points.
Then mux with video.
I've used this several times and have had no sync issues.

@Brownstem
I have not been able to record any 'on demand' programs. Sux too as there is a movie in there that is not on DVD. I did cap it to DV and painstakingly removed the pulldown, but quality is not as good as having the stream.
I have been able to get all else I've tried provided I subscribe to the channel. Even movie channels.

Karl Beem

20th December 2005, 22:10