No Audio with Video Stream download

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genegold
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No Audio with Video Stream download

Postby genegold » 07 Mar 2007 13:31

I'm trying to save to hard drive an 8-minute video from an Estonian TV site: http://sport.etv.ee/index.php?0&popup=video&id=3759. With VLC, I recorded it via File>Open Network Stream, pasted in the URL, chose Stream/Save, opened Settings and chose ASF for encapsulation and added a file name. That got me the video. There are two problems:

1) No audio. Trying a couple of the audio codec settings didn't change it.

2) Video is generally good, but starts with 10 secs of silver shadowing (don't know what to call it) and has lots of little image break up off and on around the edges of things (people, scenery). OTOH, the video plays perfectly with WMP 11. With Media Player Classic the image is still for the first 10 secs of counter time, then plays well.

I'm most concerned about how to get the audio, but also interested in why the video problems, esp. with VLC. System is XP. Any ideas? Thanks.

frogtumor2
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Postby frogtumor2 » 08 Mar 2007 13:24

Perhaps try a different encapsulation format?

Some codecs don't work with some container formats.
The streaming features list describes which codecs are supported by what container:
http://www.videolan.org/streaming-features.html



As for the grey blocky stuff, that's caused by the absence of an initial keyframe.
VLC is probably missing the first keyframe in that stream, so the video decoder just fills in the motionless areas with flat color.

genegold
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Postby genegold » 08 Mar 2007 15:43

Perhaps try a different encapsulation format?

Some codecs don't work with some container formats.
The streaming features list describes which codecs are supported by what container:
http://www.videolan.org/streaming-features.html
Thanks. I'm not quite sure how to read those tables for my purpose with that video. However, I was unfamiliar with the term muxed and a search suggests the possibility that the online version is muxed and the audio and video elements would have to be pulled apart and then reassembled. Not sure how to do that.

An update: Per the table, I've tried PS, OGG and TS, which are the others listed as working with HTTP. While streaming, all show the bytes adding up, but when finished they all show a file of 0 bytes. Only ASF holds.

frogtumor2
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Postby frogtumor2 » 09 Mar 2007 01:44

Which audio codec are you using? MP3?

Also, what does your message log say?
(open it with the View\Messages window before starting your stream)

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Postby DJ » 09 Mar 2007 06:56

I have never been successful in getting WMa or WMap transcoded into something else or for that matter copying it.

genegold
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Postby genegold » 09 Mar 2007 20:58

Which audio codec are you using? MP3?

Also, what does your message log say?
(open it with the View\Messages window before starting your stream)
Is there a way to attach the Message files (stream/play)? For the time being, here are excerpts of problems.

Messages while Streaming:

main debug: looking for access_demux module: 0 candidates
main warning: no access_demux module matched "http"
main debug: creating access 'http' path='sport.etv.ee/index.php?0&popup=video&id=3759'

main debug: looking for access_demux module: 0 candidates
main warning: no access_demux module matched "http"
main debug: creating access 'http' path='213.35.156.10/etv/sapporo2007_day10_kahev_15km.wmv'

main debug: looking for access_demux module: 0 candidates
main warning: no access_demux module matched "mms"
main debug: creating access 'mms' path='213.35.156.10/etv/sapporo2007_day10_kahev_15km.wmv?MSWMExt=.asf'

asf warning: unknown asf object (not loaded) [a few of these off & on]

main debug: adding a new input
stream_out_duplicate debug: duplicated a new stream codec=wma2 (es=0 group=0)
main error: cannot add a new stream (unsupported while muxing to this format)
stream_out_duplicate debug: - failed for output 0
main error: cannot create packetizer output (wma2)
access_mms debug: recv command start_sequence:0x4c000001 command_id:0xb00bface length:32 len8:4 sequence 0x00000006 len8_II:2 dir_comm:0x0004001b
access_mms [....]
access_mms warning: end of media stream


Messages while Playing (beginning):

access_mms warning: cannot fill buffer
access_mms warning: cannot receive header (1/10)
access_mms debug: Streaming restarted
asf warning: cannot skip data, EOF ?
main debug: EOF reached

asf warning: unknown asf object 0x26f18b5d-0x4584-0x47ec-0x9f5f0e651f0452c9 [a few of these with differnt #s]

mux_asf debug: removing input
main warning: no more input streams for this mux
main debug: Program doesn't contain anymore ES

asf debug: found 1 streams
access_file warning: unimplemented query in control

main debug: `C:\Downloads\nordic_combined' successfully opened
main debug: thread 4284 (input) created at priority 1 (input/input.c:265)
ffmpeg debug: disabling direct rendering
ffmpeg warning: warning: first frame is no keyframe
(wmv2@00AD15C0)


Hope that helps.


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