Audio and video are not synchronized when streaming DASH

[KEN]

When saving the DASH streaming, all parts of the video image are played back fast in the first few seconds and then remain static for the rest of the video. The audio is recorded correctly for the duration of the video. Is this a problem due to encryption, etc.? Or can this be resolved through a setting?

[mjs]

You're reporting the too fast video problem. Refer to the following and read through it all :

https://groups.google.com/g/video-downloadhelper-q-and-a/c/sNfTCMYfiTU

Give some feedback if it helped.

--

A vdh user

[KEN]

Thank you for your prompt reply. The many mp4s might be shown in network tag, but does the linked information also support streaming of large chunks of data?(not sure if that is the exact technical term)

2022年11月24日木曜日 14:37:52 UTC+9 mjs:

[mjs]

I'm not sure I understand your question. The link a gave offers a few different ways to get your video as well as a method to repair the video.

You just have to read through it all and decide which way you want to go on it.

[Wild Willy]

I'm a bit confused by your question as well. Streaming describes what happens when you
play a multimedia item in a player on a web page. You sit & watch it in your browser.
Typically, each chunk is not large, covering only a few seconds of the item, perhaps 15
or 20 seconds. Downloading is what VDH does. It retrieves the multimedia item from the
web site & creates a file on your computer. You can then play that file back using a
player, VLC being the recommended player. That is an operation that occurs on your
computer, not on the web site.

If you are streaming the content, any problems of synchronization would be the fault of
the web site & not really a topic for discussion here. If you are downloading the
content with VDH & it does not synchronize properly when you play it back in VLC on your
computer, that can usually be fixed by using the j & k commands in VLC. But that's only
for adjusting the synchronization of the audio by a few seconds ahead or behind what you
get by default.

However, you are not describing a simple problem of synchronization. You are describing
the problem we deal with in the thread mjs already referred you to. You need to make the
effort to read that thread & try to solve your problem that way.

I suspect your first language is not English. You may need to use Google Translate to
understand what we have described over there. You can find Google Translate here:

https://translate.google.com/?hl=en&sl=auto&tl=en&op=translate
https://translate.google.com/?hl=fr&sl=auto&tl=fr&op=translate
https://translate.google.com/?hl=es&sl=auto&tl=es&op=translate
https://translate.google.com/?hl=it&sl=auto&tl=it&op=translate
https://translate.google.com/?hl=de&sl=auto&tl=de&op=translate
https://translate.google.com/?hl=ru&sl=auto&tl=ru&op=translate
https://translate.google.com/?hl=zh-cn&sl=auto&zh-cn&op=translate
https://translate.google.com/?hl=zh-tw&sl=auto&zh-tw&op=translate
https://translate.google.com/?hl=ja&sl=auto&ja&op=translate
https://translate.google.com/?hl=ko&sl=auto&ko&op=translate
https://translate.google.com/?hl=ar&sl=auto&ar&op=translate
https://translate.google.com/?hl=iw&sl=auto&iw&op=translate

You can see the pattern of URLs Google Translate uses to present its page in your
language. If I haven't hit your language in my short list above, you can find the
complete list here:

https://sites.google.com/site/opti365/translate_codes

I suggest you post your comment again in your language & let us translate it using Google
Translate. Google Translate does reasonably well with technical content, which is the
kind of stuff we post here. Fiction, poetry, & creative writing of other kinds may not
translate so well, but our stuff here usually translates OK.

When you do post in your language, make it a proper problem report. Click this:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/BzPLK2YyL-s

There are many topics covered in there that you will probably find useful. I recommend
you read the whole thing, with the help of Google Translate if necessary, if not right
now, eventually over time. For now, do a string search for "problem report" within the
text of that web page. That will reposition the page on a reference that contains a
link. Click that link, read what you find, & follow that advice when you post again.
You should also find the reference to "stealth quote" within the text of that page. That
will give you another link you need to click. Read that advice & follow it as well when
you next post here.

A note about Google Translate. Usually, you can enter a URL in the left translate area.
That echoes the URL in the right translate area for you to click. That usually opens a
new browser window with the page translated into your chosen target language. That
doesn't seem to work so well on pages of this Google Group. You have to manually
copy/paste the text of each post one at a time into Google Translate. Some pages work OK
but others don't. I don't know why. It seems to be a problem with Google Translate.
Also, Google Translate does not work on text embedded within images. There's nothing we
can do about that. Still, Google Translate can be useful if you have trouble with
English.

[Wild Willy]

I have discovered that in just the few months since I posted above, the page of language codes has disappeared.  This is where you can find those language codes now:

https://cloud.google.com/translate/docs/languages

That page seems to be oriented towards programmers.  Ignore that.  The list of language codes is there.  Let's hope that page doesn't disappear any time soon.