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Request: Input Filter For Dash Format
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MrSmite
Posted: May 26 2014, 02:31 AM


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Posts: 102
Member No.: 25620
Joined: 30-May 09



Greetings,

I'm wondering if anyone would be able to create an import filter that allows VirtualDub to open 'DASH' format.

DASH is a format that YouTUBE uses to stream 720p and 1080p by separating both the audio and video streams. There is a Firefox plugin: Youtube Video and Audio Downloader, which allows you to download these streams and it would be great if we could add the audio / video tracks directly into VirtualDub.

Even though the files are AVC/H.264 and AAC, the major_brand is 'DASH' so VirtualDub doesn't recognize it. In order to be able to edit the video, you have to first mux it with ffmpeg.

Here's some output from Mediainfo:

CODE

Format                                   : dash
Codec ID                                 : dash
File size                                : 44.6 MiB
Duration                                 : 4mn 32s
Overall bit rate                         : 1 375 Kbps

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L3.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 3 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding


CODE

Format                                   : dash
Codec ID                                 : dash
File size                                : 8.27 MiB
Duration                                 : 4mn 32s
Overall bit rate mode                    : Constant
Overall bit rate                         : 255 Kbps


Audio
ID                                       : 1
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40


Thanks!
 
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dloneranger
Posted: May 26 2014, 07:17 AM


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Joined: 26-September 07



Very doubtful that someone would bother, when there are loads of things that can download files from youtube as mp4, flv etc that load using existing plugins

I use JDownloader as a general file downloader, and that also lets you download from youtube in all formats/resolutions
http://board.jdownloader.org/showthread.php?t=54725
Just copy the url and it gives you a list of available files
There are plenty of others as well, including firefox plugins or greasemonkey scripts that will do it but jdownloader does what I need so I'm not testing everything else :-)

user posted image

--------------------
MultiAdjust JoinWav WavNormalize FFMPeg Input Plugin v1827 UnSharpMask
Windows7/8 Codec Chooser
All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3
 
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MrSmite
Posted: May 26 2014, 08:05 PM


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Group: Members
Posts: 102
Member No.: 25620
Joined: 30-May 09



Anything that downloads as 1080p must mux the two streams since they are separate. The plugin I linked does that using ffmpeg but only if you use the default Firefox downloader.

I use DownThemAll so I can control speed and not choke my connection and the plugin integrates with it but it will not mux the streams afterward, I have to do it manually. I just thought it would be nice to be able to batch it all in VirtualDub where I can apply other filters and trim off ESRB notices and other junk.
 
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dloneranger
Posted: May 26 2014, 10:23 PM


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<Shrug> jdownloader just does it all for me (muxing, speed limiting etc) so that's not a problem

A plugin for virtualdub would be a lot of work to replicate what's already out there or could be done with little effort
Unless a coder decided it'd be a nice side project or something they want themself, I can't really see it happening

--------------------
MultiAdjust JoinWav WavNormalize FFMPeg Input Plugin v1827 UnSharpMask
Windows7/8 Codec Chooser
All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3
 
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ale5000
Posted: Mar 9 2015, 12:02 AM


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Posts: 1114
Member No.: 22180
Joined: 30-September 07



The FFMpeg Input Plugin can already open dash files (they are a variation of the MP4 container).

--------------------
New VirtualDub forum
VirtualDub AIO (All-in-One installer for VirtualDub and plugins)
Codec Toolbox RS (A tool to read/change merit of codecs and many other things)
Input plugins for VirtualDub / ACM codecs / VFW codecs
 
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