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Problems burning DVD's from recordings (Workaround found)
http://forum.linhes.org/viewtopic.php?f=6&t=16185
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Author:  cliffsjunk [ Tue Aug 21, 2007 6:22 pm ]
Post subject:  Problems burning DVD's from recordings (Workaround found)

I can burn to native archive format just fine, but when I try to burn a DVD to run in a stand alone player it fails in several different ways depending on the options I select. This appears to be related to using cut lists. Is this a known issue?

When I burn a scheduled recording with cutlist and select a DVD menu with chapters I get an error like this:
Quote:
cannot jump to chapter 2 , only 1 exists


When I burn a scheduled recording with cutlist and select a DVD menu without chapters I get a correctly formatted DVD, but with only the first part of the movie there. The VIDEO_TS file sizes reflect this; when they should be maybe 3 gig, they total less than a gig. Thus it is not a burning error, but a file completion error.

When I burn a manual recording with no cutlist the fps is wrong and I get this error (probably a different bug and not hurting me that bad):
Quote:
MPEG1/2 does not support 5/1 fps

I hacked a work-around as in this topic:
http://mysettopbox.tv/phpBB2/viewtopic.php?t=13552&highlight=

If I turn off "use cutlist" when burning a normal DVD (not a native archive DVD) from a recording it works ok, even with chapters. I in addition to the hack mentioned above, I found that you must have a cut at the very beginning of the recording to use the cutlist without issue.

Interesting details that sound like they are related follow:

I took a native archive recording of the same program from my girfriend's system
Quote:
R5F1, 1.4ghz athlon 512meg ram, pvr-350, default MPEG-2 recording profile
to mine
Quote:
R5F1, 3.0ghz dual core, 512meg ram, HD-5500, jacked up MPEG-4 recording profile. <edit> I do not generally record DVB. I capture the NTSC output of my satellite receiver and record directly to MPEG4.
I imported it, watched it, loaded and edited cutpoints and burned a DVD successfully. The burn included using chapters in the menu and cutpoints, both of which caused problems with the other recording.

This is not an isolated case. This happens with all recordings on my HD-5500 nuv system.

I have found that cutpoints on the MPEG-4 nuv file come in "doubles" but the cutpoints on the MPEG-2 mpg file are "normal". On the nuv file, each cutpoint is a set of two adjacent frames. When you use the Pg-Up or Pd-Dn to jump from cutpoint to cutpoint, you stop at both halves of the double cutpoint. This is even true when you have just loaded the commercial skip into the cutlist with the Z key. It also lists the beginning of the recording as a "single" cutpoint that cannot be deleted. The first cutpoint after the beginning is also a "single" cutpoint. This is true whether I load in the commercial skip list or whether I clear all cutpoints (home key) and insert them manually. Is it possible that some of the scripts are seeing only the commercials rather than only the show? FYI: the good but cut off short recording that I get when I select a DVD without a menu does have the main show on it, not the commercials. The MPEG-2 mpg file does not have any of these quirks. The cutpoints are not doubled, and the beginning of the file is not interpreted as a cutpoint. I have searched for bad cut points in the nuv and found none (other than the beginning being labeled as a cutpoint when editing the cutpoints and the first cutpoint being a "single").

When I made native archives of these recordings to transport them I noticed that the file size of the native archive XML file for the correct recording (pvr-350, mpg, mpeg-2?, 7.0gig) (1,262,279) was almost exactly twice as big as for the incorrect recording (HD-5500, nuv, mpeg-4, 7.4 gig) (628,056).

The last few lines of the good recording xml are:
Quote:
<mark offset="7043003256" type="6" mark="21563" />
<mark offset="7043334964" type="6" mark="21564" />
<mark offset="7043664624" type="6" mark="21565" />
<mark offset="7043979948" type="6" mark="21566" />
</recordedseek>
</item>


The last few lines of the bad recording xml are:
Quote:
<mark offset="7440157132" type="7" mark="10781" />
<mark offset="7440300431" type="7" mark="10782" />
<mark offset="7440461071" type="7" mark="10783" />
<mark offset="7440616954" type="7" mark="10784" />
</recordedseek>
</item>


I have native archives of both the good and bad recordings if anyone can interpret them. I only have 250kbit upload DSL, so uploading the entire nuv or mpg are a bit prohibitive.

System Info follows:
This is running R5F1, on an older dual core 3.0ghz Intel CPU with 512 meg ram. The tightest the swap space ever gets it has maybe 300 meg free. <edit> I really only use the video capture portion of the HD-5500 to record from the video out of my satellite receiver. I do not generally record DVB. I capture directly to MPEG4.

I have plenty CPU, so I encode directly to Mpeg4 and do not transcode.

My Mpeg4 encoding quality is jacked way up (0-2) and I have increased the resolution to 640x480. Encoding bit rate is jacked up to 5mb/s. Scale bitrate, HQ encoding, and 4MV encoding are on. I jacked up the MP3 audio sample rate (44100) and quality (2) too.

This is not a dual core issue because I can take a native archive export over to girfriend's single core system and it does the same thing.

Girlfriend's system is much more stock: R5F1, 1.4ghz Athlon, 512 meg ram, PVR-350 so recordings are 480x480 in default MPEG-2 settings.[/quote]

Author:  bruce_s01 [ Wed Aug 22, 2007 3:01 am ]
Post subject: 

Quote:
When I burn a scheduled recording with cutlist and select a DVD menu with chapters I get am error like this:
Quote:
cannot jump to chapter 2 , only 1 exists

When I burn a scheduled recording with cutlist and select a DVD menu without chapters I get a correctly formatted DVD, but with only the first part of the movie there. The VIDEO_TS file sizes reflect this; when they should be maybe 3 gig, they total less than a gig. Thus it is not a burning error, but a file completion error.


I had a problem like this with a downloaded .avi file, the way I got around this was, instead of transcoding using the 2 hour profile, I used the 4 hour profile. I believe it had something to do with the frame size of the source video file.

Quote:
I took a native archive recording of the same program from my girfriend's system (R5F1, 1.4ghz athlon 512meg ram, pvr-350, default MPEG-2 recording profile) to mine (R5F1, 3.0ghz dual core, 512meg ram, HD-5500, jacked up MPEG-4 recording profile). I imported it, watched it, loaded and edited cutpoints and burned a DVD successfully. The burn included using chapters in the menu and cutpoints, both of which caused problems with the other recording.

This is not an isolated case. This happens with all recordings on my HD-5500 nuv system.
I think nuvexport or the mytharchive interface to it is broken in some way, it seems weird values are passed to it, I don't know how certain pieces of the source file info are gathered, but somehow odd framerates etc are parsed from it, then passed to nuvexport through mytharchive.

The only thing I can suggest is not transcoding MPEG2 files to MPEG4 if you are planning to burn the file to DVD.

Bruce S.

Author:  cliffsjunk [ Sun Aug 26, 2007 6:08 pm ]
Post subject: 

I can think of four things it could be:
- a bug related to MPEG-2 vs. MPEG-4 codec usage
- a bug that causes problems if you change the default recording profile (resolution, bit rate, quality, etc) away from the defaults
- a dual core issue that happens during TV recording, not during DVD file creation
- messed up install

There is no MPEG-2 codec listed on the HD-5500 dual core FE/BE where this happens (Setup -> TV Settings -> Recording Profiles). Is it possible to add one?

Cliff

Author:  bruce_s01 [ Mon Aug 27, 2007 4:57 am ]
Post subject: 

I'm pretty sure that the most if not all of the the streams you should receive are MPEG2, so they should be stored as default as MPEG2.

Bruce S.

Author:  cliffsjunk [ Thu Sep 06, 2007 7:12 pm ]
Post subject: 

I added the following comment to the system specs in the original message:
Quote:
I really only use the video capture portion of the HD-5500 to record from the video out of my satellite receiver. I do not generally record DVB. I capture directly to MPEG4.

Is there a way to put an MPEG2 codec in the recording profiles so I can capture directly to MPEG2 for a test? I have DVD playback working, so I have an MPEG2 codec.

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