I have a PVR-250 and am recording in 720x480 for NTSC. When I try to use nuv2disc, it doesn't let me select a file for burning, but only will let me transcode. When I try to transode a file using the nuv2disc interface, to see what would happen, it says "transoding..." then about 5 seconds later "completed." It still doesn't let me select any files for burning, and I don't think it converted anything.

I am using R5A16.


1. Am I correct in assuming that if nuv2disc won't let me select the files for burning, it thinks that they are not in the correct format?

2. Is there a utility I can use to show me the video parameters of a nuv file to see if it was what I think it is?

3. Can anyone think of a reason that the transcoding completes like this without seeming to do anything?

4. For files that really do need transcoding, can this be done while using my MythTV? Or does it slow things down too much? (When I encode MPEG-2 files on my WinXP PC, it takes about 100% of the CPU time.)

Thanks in advance.

1) yes that's correct. Your best bet is to check the log files under /myth/nuv2disc to find out why it isn't seeing your files.

2) mpgtx or tcprobe will work for you
running
tcprobe -i $yourfilenamehere
and pasting the results will help for further debugging

3) nuvexport is broken OR nuv2disc is sending cli parameters that nuvexport doesn't understand. This occurs because the nuvexport cli changes between releases.
4) This all depends on your processor, I have tested transcoding with nuv2disc on a 3GHZ machine and watched livetv without any issues.

If that was an intel hyper-threading processor, I suspect that would help a lot.

pretty sure HT was turned off, but you never know

Thanks for the replies. I have the following info based on the above suggestions:

1. tcprobe run:



2. mpgtx run:



3. Log file /myth/nuv2disc/log/dvdstatus:



This was when I tried to transcode the files, and they completed immediately, with no output.

4. I also tried running nuvexport in a shell window, and it ran fine, converting the file.

5. I uploaded one of the nuv files to my Windows box, renamed it .mpg, and imported it a DVD authoring app I have. It didn't complain about it at all, and authored a DVD without converting the file further.

Can someone expand on the nuv2disc cli params? I don't know anything about this.

Thanks again,

Mike

From the looks of it, nuvexport's cli has changed yet again. Which is why nuv2disc fails on the transcoding.

The output you pasted looks fine. When you enter the screen to select files for dvd burning are there any listed?

From the looks of it, nuvexport's cli has changed yet again. Which is why nuv2disc fails on the transcoding.

The output you pasted looks fine. When you enter the screen to select files for dvd burning are there any listed?

Well, I messed with some recording settings and now the newly recorded .nuv files are showing up in the nuv2disc menu as being ready for DVD authoring, and as not needing transcoding. As the DVD processing proceeded, I got the following errors periodically in the DVD Wizard area: "write - Broken pipe" and "Syncinfo - write error (0)."

The authoring process completed, however, and I got a DVD Recording Error when I tried to burn the DVD (again using nuv2disc). I searched the forum and found the change needed to the commonvars file: /dev/scd0 to /dvd/dvd. After making this change, the burn was successful!

So, 2 questions remain:

1. Do the above errors (pipe, etc) matter? Are they normal? The disc appears to be OK, but I haven't watch it through to the end.

2. Why did the transcode process complete as soon as it began with no output (see above)? I did find a forum post of someone saying that the newest version of nuv2disc should be tried, but I haven't done that yet.

Thanks again for the replies.

Mike

What settings exactly did you choose? I'm having the same problem you described in your original post while running R5A22. I have a PVR-150 (if it matters).

yep it's just a debug statement I forgot to comment



nuvexport is used for the transcoding.
The process completes right away because nuvexport fails

I was able to get my latest recording to appear as "ready for dvd selection" within the KnoppMyth Create DVD. To do so, I set the following within my Recording Profiles:

MPEG-2 Encoders --> Default
Profile
Enable auto-transcode after recording NOT selected
Image Size
Width 720. Height 480
Video Compression:
Codec: MPEG-2 Hardware Encoder
Stream Type: MPEG-2 PS
Aspect Ratio 4:3
Bitrate: 4500
Max Bitrate: 6000
Audio Quality
Codec: MPEG-2 Hardware Encoder
Sampling rate: 32000
Type: Layer II
Bitrate: 384 kbps
Volume 90

The only thing I changed was the Image Size - I had to increase the width from 480 to 720.

The next show I recorded displayed as "ready for DVD selection"... however...

From the Create DVD screen, I select "Create a dvd".
On the next screen the "Select Files" button is grayed out. I tried doing an "Update File list" but that didn't seem to help. The DVDStatus (with a blank DVD in the DVD drive) reports: "ERROR" after placing dots at each line on the screen (Commerical, Mplex, DVDwizard, etc.). All I can do is go BACK.

With the blank DVD still in the drive, I went to another terminal window and found an error message continuously printed out:

cdrom: This disc doesn't have any tracks I recognize!

I'm not really sure what to make of that. It's a blank DVD so I don't expect there would be any recognizeable files.

Anyone have any ideas on how to get the Select Files to work? Did I forget some important step along the way?

Thanks in advance.

there might be a lock file laying around from a failed attempt.

Go into the util section and select remove lock file and the cleanup buttons.

This should fix your problem.

Yep, that did the trick. Burn successful!
Many thanks!!