no raw dv play vlc 0.8.0

[johnclubvec]

Hi,

vector linux 4.3 (slackware-based, kernel 2.6.7)

I am posting relevant sections from the vlc message window regarding play of the identical raw dv file in vlc 0.7.2 and vlc 0.8.0. Play was successful in 0.7.2 (on another partition running vl 4.0 and kernel 2.4.26), unsuccessful in 0.8.0. Do the messages simply mean that ffmpeg has (once again) gotten confused about raw dv, and so vlc is stumped? I tried once to regress to the older, working ffmpeg version in my new partition but got stuck in compiler hell. If the problem looks to you like it's exclusively an ffmpeg issue, then I can decide whether to wait for a (re-)improvement in ffmpeg, or try to work through the compilation of the older version.

Thank you for all your work.

Best,

John Kelleher

=======================
vlc 0.7.2 with ffmpeg-20040520:
=======================

main debug: using demux2 module "rawdv"
main debug: using demux module "demux2"
main debug: looking for a subtitle file in /mnt/dv/Part1/
main debug: selecting ES 0x1
main debug: looking for decoder module
main debug: probing 19 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: postprocessing disabled
ffmpeg debug: using direct rendering
ffmpeg debug: ffmpeg codec (DV Video) started
main debug: using decoder module "ffmpeg"

main debug: thread 163846 (decoder) created at priority 0 (src/input/input_dec.c:161)
main debug: selecting ES 0x2
main debug: looking for decoder module
main debug: probing 19 candidates
araw debug: samplerate:48000Hz channels:2 bits/sample:16
main debug: using decoder module "araw"
main debug: thread 180231 (decoder) created at priority 0 (src/input/input_dec.c:161)
ffmpeg debug: disabling direct rendering

=======================
vlc 0.8.0 with ffmpeg-20041101
=======================

ffmpeg debug: detected format: dv
ffmpeg error: av_find_stream_info failed
rawdv warning: not a raw DV stream header
ps warning: this does not look like an MPEG PS stream, continuing anyway
main debug: using demux2 module "ps"
main debug: looking for a subtitle file in /mnt/dv/Part1/
main debug: `/mnt/dv/Part1/PART009.dv' sucessfully opened
ps warning: garbage at input
[etc. repeating same message.]

[johnclubvec]

Update: I have confirmed that this is NOT an ffmpeg problem. man ffplay says: "FFplay is a very simple and portable media player using the FFmpeg libraries and the SDL library." The following runs successfully:

ffplay /mnt/dv/Part1/PART009.dv

So my present compiled version of ffmpeg is fine with raw dv. The problem is somewhere else.

John Kelleher

[Sigmund]

try this: vlc file/rawdv://<yourfile>

Does that work. Seems like the rawdv demuxer fails to recognise your file.

[Guest]

Does NOT work:

vlc file/rawdv:///mnt/dv/Part1/PART009.dv

DOES work:
su
vlc file/rawdv:///mnt/dv/Part1/PART009.dv

Does NOT work
su
vlc
[try to open and play /mnt/dv/Part1/PART009.dv]

Thank you for your interest, and I hope this helps you.

John Kelleher

[johnclubvec]

Update:

My distro uses submountd/subfs, so that might explain some of the problem. (I know for a fact that I now must run vlc as root (or with sudo) to view dvds).

But also please note that according to the messages I copied in my original post, the rawdv demuxer in 0.7.2 was recognizing raw dv.

Also, this might not have been apparent in the content from my original post, but in 0.8.0, I get NO message from/about the rawdv demuxer -- I didn't clip out the message, it just wasn't there. The first relevant message concerns ffmpeg trying to recognize the file.

Thank you so much for your interest!

John Kelleher

P.S. apologies for not logging in to write my previous post.

[Sigmund]

your original posting _does_ show messages about rawdv. Right below that from ffmpeg.

[johnclubvec]

Thank you Sigmund -- and you put it very politely, on top of everything.

See what happens when I don't go back and COMPLETELY read my original post?!! I meant to observe the obvious, that in 0.7.2 but not in 0.8.0 the raw dv demuxer seems to jump in before ffmpeg. But what is curious is why the same version of ffmpeg, in ffplay recognizes and plays the raw dv file, but doesn't recognize it in vlc.

But this stuff is 'way beyond my league. I don't know how vlc works; I'm just glad it does work -- and so well, too. It's a terrific application. Thank you again for your interest, and let me know if I can do anything to test or to help.

John Kelleher