Re: [vdr] Filesystem hierachy standard patch needs review.

[Klaus Schmidinger]

On 04.09.2012 22:29, Manuel Reimer wrote:

...
For example the file diseqc.conf should be editable via OSD, in my opinion. 
If I pre-setup an VDR system for someone, then it should be possible to just hand over 
the system to him and he should be able to just connect the wires and do anything, still 
required, using his remote control.

So for me it seems to be useless to try to strictly separate VDR's configuration files between 
static and dynamic. They all should be dynamic and maybe at any time they 
could get dynamic, if Klaus improves the OSD setup possibilities.


Feel free to contribute some code that implements an interactive
DiSEqC setup menu ;-)
The DiSEqC setup with all its possibilities is rather complex,
and setting it up via a config file is simple enough for me,
that's why I never bothered even trying to write a full-fledged
setup page for it. But I'll gladly adopt a patch that does this
in a useful way ;-)

Klaus

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Re: [vdr] VDR File splitting validation

[Rares Pop]

Thanks for the response and the vdrnfofs tip.
At the moment we're doing some post processing to deal with this, by bringing 
back the audio from the next file.

You were saying that  VDR does splitting and editing on the data stream level, 
not on the audio/video-track level. 
Am I to understand that vdr doesn't make the files at the beginning of a video 
I-frame?

Kind regards,
Rares

On Sep 4, 2012, at 11:55 PM, Udo Richter udo_rich...@gmx.de wrote:

 Am 04.09.2012 15:22, schrieb Rares Pop:
 Now, when VDR does the file split (after the quota has been met and a
 video I-Frame is about to start) the audio packets that would be in
 sync with the latest video frames before the split are actually being
 contained in the next split file.
 
 Thats because VDR does splitting and editing on the data stream level, not on 
 the audio/video-track level. Merging all the file pieces together always 
 gives the original stream, with just very minor modifications.
 
 Editing based on time stamps would be a lot more difficult, as near the 
 splitting point, data needs to be moved to the previous/next file, depending 
 on whether audio is ahead/behind video. To make things more complicated, 
 there's no guarantee that together with the I-frame also a new audio frame 
 starts at the exact time stamp. For precise editing, an audio frame may have 
 to be split and re-compressed.
 
 And for playback, the same applies in reverse: For pre-buffering, the 
 A/V-data of the file end and beginning needs to be merged with proper offset 
 again. This is all a lot more complicated than just splitting the whole data 
 stream as one.
 
 For further processing, its the best to merge continuous stream parts into 
 one big file, if the program cannot handle split files on its own. If you 
 want to avoid the copying, take a look at vdrnfofs, a virtual file system 
 that virtually merges VDR recordings into single mpg files.
 
 
 Cheers,
 
 Udo
 
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Re: [vdr] VDR File splitting validation

[Udo Richter]

Am 05.09.2012 11:13, schrieb Rares Pop:

You were saying that  VDR does splitting and editing on the data
stream level, not on the audio/video-track level. Am I to understand
that vdr doesn't make the files at the beginning of a video I-frame?


The video stream gets split at a TS packet that contains an I-Frame / 
GOP start of the VPID video stream, thats true. But all other streams 
get split just at that same point in the data stream, not necessarily at 
any special boundaries.


Cheers,

Udo

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