VLC 3.x Open Multiple Files... and Play another Media syncronously do not work

[#thweiss]

In VLC Version 2.2.8 you can play and control two Videos synchron with the Menu / Open Multiple Files... and "Play another Media synchronously".

All VLC-Player Versions 3.x will not work with the useful Feature (Play and control two Videos synchronously).

See also the Links:
- "Open multiple files not working." Link: https://forum.videolan.org/viewtopic.php?f=14&t=150474
- "Manage 2 video on a screen with command line" Link: https://forum.videolan.org/viewtopic.php?f=14&t=147932

Hope someone can find a Solution for the VLC-Player Version 3.x.

[Rémi Denis-Courmont]

You may need to select video tracks depending on file format policy.

[#thweiss]

1) Please open in the Menu "Open Multiple Files..." the Video-Example

a)

Code: Select all

http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerBlazes.mp4

with VLC-Player 2.2.8 (32-Bit) and activate the Option "Play another Media synchronously" with

b)

Code: Select all

http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ForBiggerBlazes.mp4

and Start playing with the [Play]-Button.
Don't forget to activate the Loop-Funktion in the VLC-Player!


2) Repeat the Workflow with VLC-Player Version 3.x, for Example 3.0.11 (64-Bit).
Try Windows 7 or Windows 10 as Operating System.


3) Please describe the Changes in the "File Format Policy" between Version 2.x and 3.x. or add a Link for the Source.
For me it looks like a Bug in all VLC-Player Versions 3.x.

Could not find any Change in the File Format Policy with the Changelog:

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https://git.videolan.org/?p=vlc.git;a=blob;f=NEWS

VLC-Player - Feature-Formats support:

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https://wiki.videolan.org/VLC_Features_Formats/

VLC-Player - Streaming Features:

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https://www.videolan.org/streaming-features.html

Does the "File Format Policy" in the VLC-Player Versions 3.x forbidden to play two Videos synchronously?
I can't believe that.

What is Your Check Result?

[Rémi Denis-Courmont]

MP4 file format selects a single video track by default. This is intended.

[#thweiss]

Thanks for the MP4 File Format Hint.

Please try the next Example.

1) Open in the Menu "Open Multiple Files..." the image

a)

Code: Select all

https://download.videolan.org/pub/videolan/testing/images_test/quality80_sharpen0.4_nostrip.jpg

with VLC-Player 2.2.8 (32-Bit) and activate the Option "Play another Media synchronously" with

b)

Code: Select all

https://download.videolan.org/pub/videolan/testing/images_test/quality80_sharpen0.4.jpg

and Start playling with the [Play]-Button.

2) Repeat the Workflow with VLC-Player Version 3.x.

By the Way, you can also download the Images and open it from lokal Computer-Drive.

What is Your Check Result?

[#thweiss]

I will add an other Example for testing with different File Formats.


1) Open in the Menu "Open Multiple Files..." the image

a)

Code: Select all

https://file-examples.com/wp-content/uploads/2018/04/file_example_OGG_480_1_7mg.ogg

with VLC-Player 2.2.8 (32-Bit) and activate the Option "Play another Media synchronously" with

b)

Code: Select all

https://file-examples.com/wp-content/uploads/2018/04/file_example_MOV_480_700kB.mov

and Start playling with the [Play]-Button.

2) Repeat the Workflow with VLC-Player Version 3.x.

What is Your Check Result?

[Rémi Denis-Courmont]

The result in both cases is that I have two video tracks, of which one is enabled by default, as intended.

[#thweiss]

1) Yes, the two Video Tracks play in an own Desktop-Window synchron with Version 2.x, as intended and both Video Tracks can controlled with one VLC-Player in the GUI (Version 2.x).

That's the missing Function in Version 3.x, to compare two Videos.
Hope there is a simple Solution to repair the Function play synchronously.

2) By the way, when I try to play an Video-Track with an alternative Audio-Track the synchronously Play with the following Http Live Stream does not work in Version 3.0.11 (64-Bit) under Windows 10.
https://tools.ietf.org/html/rfc8216#page-52

HLS-Example

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https://zdf-hls-15.akamaized.net/hls/live/2016498/de/high/master.m3u8

Index-File with alternative Audio-Tracks

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#EXTM3U #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-510682780",NAME="TV Ton",LANGUAGE="deu",DEFAULT=YES,URI="https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/5/5.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-510682780",NAME="Originalton",LANGUAGE="mul",URI="https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/6/6.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-510682780",NAME="Audio-Deskription",LANGUAGE="deu",URI="https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/7/7.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-1266820252",NAME="TV Ton",LANGUAGE="deu",DEFAULT=YES,URI="https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/5/5.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-1266820252",NAME="Originalton",LANGUAGE="mul",URI="https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/6/6.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="A1.1+A2.1+A3.1-1266820252",NAME="Audio-Deskription",LANGUAGE="deu",URI="https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/7/7.m3u8" #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=542359,AVERAGE-BANDWIDTH=452359,AUDIO="A1.1+A2.1+A3.1-510682780",FRAME-RATE=25.000,RESOLUTION=480x270 https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/1/1.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=542359,AVERAGE-BANDWIDTH=452359,AUDIO="A1.1+A2.1+A3.1-1266820252",FRAME-RATE=25.000,RESOLUTION=480x270 https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/1/1.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=1044619,AVERAGE-BANDWIDTH=840619,AUDIO="A1.1+A2.1+A3.1-510682780",FRAME-RATE=25.000,RESOLUTION=640x360 https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/2/2.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=1044619,AVERAGE-BANDWIDTH=840619,AUDIO="A1.1+A2.1+A3.1-1266820252",FRAME-RATE=25.000,RESOLUTION=640x360 https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/2/2.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=2128446,AVERAGE-BANDWIDTH=1678446,AUDIO="A1.1+A2.1+A3.1-510682780",FRAME-RATE=25.000,RESOLUTION=960x540 https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/3/3.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.4d401f,mp4a.40.2",BANDWIDTH=2128446,AVERAGE-BANDWIDTH=1678446,AUDIO="A1.1+A2.1+A3.1-1266820252",FRAME-RATE=25.000,RESOLUTION=960x540 https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/3/3.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.640028,mp4a.40.2",BANDWIDTH=4375402,AVERAGE-BANDWIDTH=3415402,AUDIO="A1.1+A2.1+A3.1-510682780",FRAME-RATE=50.000,RESOLUTION=1280x720 https://zdf-hls-15.akamaized.net/hls/live/2016498/de/57e9cc6dcb94063768a5821187e12ba7/4/4.m3u8 #EXT-X-STREAM-INF:CODECS="avc1.640028,mp4a.40.2",BANDWIDTH=4375402,AVERAGE-BANDWIDTH=3415402,AUDIO="A1.1+A2.1+A3.1-1266820252",FRAME-RATE=50.000,RESOLUTION=1280x720 https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/4/4.m3u8

When I manually select Tracks with Menu / Open Multiple Files...

a) Video-Track

Code: Select all

https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/3/3.m3u8

and

b) Audio-Track

Code: Select all

https://zdf-hls-15.akamaized.net/hls/live/2016498-b/de/57e9cc6dcb94063768a5821187e12ba7/6/6.m3u8

The VLC-Player 3.0.11 play not synchronously Audio and Video.

[#thweiss]

I will add an other Example for alternative HLS-Audio or multiple Audio-Tracks.
https://lab.irt.de/demos/multitrackaudio/demo/


HLS-Example:

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https://irt-a.akamaihd.net/demos/hls-multitrackaudio/master.m3u8

HLS-Index File:

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#EXTM3U #EXT-X-VERSION:3 #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",LANGUAGE="de",NAME="Original",AUTOSELECT=YES, DEFAULT=YES,URI="audio/index_Original.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",LANGUAGE="de",NAME="Dialog +12dB",AUTOSELECT=YES, DEFAULT=NO,URI="audio/index_DialogPLUS12.m3u8" #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",LANGUAGE="de",NAME="Binaural",AUTOSELECT=YES, DEFAULT=NO,URI="audio/index_Binaural.m3u8" #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=885000,RESOLUTION=640x360,AUDIO="audio",CODECS="avc1.66.30, mp4a.40.2" audio/index_Video.m3u8

HLS-Video:

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https://irt-a.akamaihd.net/demos/hls-multitrackaudio/audio/index_Video.m3u8

HLS-Audio:

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https://irt-a.akamaihd.net/demos/hls-multitrackaudio/audio/index_Original.m3u8

alternate HLS-Audio

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https://irt-a.akamaihd.net/demos/hls-multitrackaudio/audio/index_DialogPLUS12.m3u8

alternate HLS-Audio

Code: Select all

https://irt-a.akamaihd.net/demos/hls-multitrackaudio/audio/index_Binaural.m3u8

[#thweiss]

I added for some Times this new Entry in the Bug-Tracker.

Here is the Link.
- https://trac.videolan.org/vlc/ticket/24896

Hope anybody find the Time to repair the missing Function.

[#thweiss]

Found an elderly Thread "VLC 3.0.6 play multiple files feature is broken?" with the same Issue and no Solution.

- https://forum.videolan.org/viewtopic.php?f=14&t=148225