MediaInfo(Lib) 0.7 - Reading information about media files

[Zenitram]

Originally Posted by stax76

Zenitram, do you remember why managed application were crashing using MediaInfo in the beginning of MediaInfo? I've now a similar problem with 2 AviSynth plugins. Since you were fixing this problem MediaInfo was working rock solid since countless years.

Unfortunately not specifically this issue.
there were issues about CPU (people trying to load the 32-bit version because the project is configured for 32-bit but the DLL is 64-bit and vice-versa), about strings (which were deleted but still used by the calling app, I use temporary strings now), and many others I forgot.

[mariner]

Greetings Zenitram. Many thanks for sharing this wonderful piece of work.

Have a question on how delay is dealt with.

For example, mediainfo reported a video delay of 67ms and audio delay of 70ms for an mkv clip, resulting in net a/v delay of 3ms.

Other software(s), however, reported a net a/v delay of -67ms.

Would appreciate if you could kindly explain the discrepancy.

Many thanks and best regards.

[Zenitram]

Originally Posted by mariner

For example, mediainfo reported a video delay of 67ms and audio delay of 70ms for an mkv clip, resulting in net a/v delay of 3ms.

Other software(s), however, reported a net a/v delay of -67ms.

Would appreciate if you could kindly explain the discrepancy

It may be a bug. Without the file (at least the first MB), I can not say more.

[mariner]

Originally Posted by Zenitram

It may be a bug. Without the file (at least the first MB), I can not say more.

Thanks for the kind reply, Zenitram.

Would appreciate if you could advise the proper steps to use MVVtoolNix (or other software) to cut a sample without messing up the delay info.

Many thanks and best regards.

[sneaker_ger]

Open the file using mkvmerge GUI, go to the "global" tab and select "split parts" "split by parts based on timecodes" and enter e.g. "-0:0:10" (without quotes) to cut the first 10 seconds.

[mariner]

Originally Posted by sneaker_ger

Open the file using mkvmerge GUI, go to the "global" tab and select "split parts" "split by parts based on timecodes" and enter e.g. "-0:0:10" (without quotes) to cut the first 10 seconds.

Thanks sneaker_ger. Here's a 5sec clip.

As I suspected, delay has been altered.

[Zenitram]

Originally Posted by mariner

Would appreciate if you could advise the proper steps to use MVVtoolNix (or other software) to cut a sample without messing up the delay info.

Use any Hexadecimal editor (example : HxD), select the first MB, (example : menu edit, "select block"), copy it, create a new file, paste, save, upload on any upload website.

[sneaker_ger]

Originally Posted by mariner

As I suspected, delay has been altered.

You mean delays changed after remuxing? That shouldn't happen AFAIK. In that case you have to follow what Zenitram said to cut.

[mariner]

Originally Posted by Zenitram

Use any Hexadecimal editor (example : HxD), select the first MB, (example : menu edit, "select block"), copy it, create a new file, paste, save, upload on any upload website.

Thanks Zenitram. Here's a 1MB sample.

https://www.sendspace.com/file/umdxee

[mariner]

Originally Posted by sneaker_ger

You mean delays changed after remuxing? That shouldn't happen AFAIK. ....

Unfortunately MKVT is not consistent dealing with delays under certain conditions.

[sneaker_ger]

Originally Posted by mariner

Thanks Zenitram. Here's a 1MB sample.

https://www.sendspace.com/file/umdxee

Mkvtoolnix says delay for video 67 ms, delay for audio 0ms.

First cluster timecode is 67ms, 70ms is the first audio timecode >67ms so maybe MediaInfo does not handle correctly negative (in relation to cluster timecode) SimpleBlock timecode or something like that? It's a signed int.

[mariner]

Originally Posted by Zenitram

Use any Hexadecimal editor (example : HxD), select the first MB, (example : menu edit, "select block"), copy it, create a new file, paste, save, upload on any upload website.

Greetings Zenitram. Any luck with identifying the correct audio delay?

[Zenitram]

Originally Posted by mariner

Any luck with identifying the correct audio delay?

I quicly check and issue may be inside MediaInfo. I did not have the time yet for a deep analysis. Work in progress

[mariner]

Originally Posted by Zenitram

I quicly check and issue may be inside MediaInfo. I did not have the time yet for a deep analysis. Work in progress

Greetings Zenitram.

Many thanks for looking into the issue and best regards.

[LoRd_MuldeR]

Zenitram, I'm getting this compilation error with MediaInfo 0.7.74 release:

3>..\..\..\Source\MediaInfo\File__Analyze.cpp(2323): error : identifier "Trace_Activated" is undefined
3>        if (Trace_Activated)
3>            ^
3>  
3>..\..\..\Source\MediaInfo\File__Analyze.cpp(2325): error : identifier "Config_Trace_Format" is undefined
3>            switch (Config_Trace_Format)
3>                    ^
3>  
3>..\..\..\Source\MediaInfo\File__Analyze.cpp(2329): error : class "MediaInfoLib::File__Analyze::element_details" has no member "ToShow"
3>                                                                    size_t Details_lt_Pos=Element[Element_Level].ToShow.Details.rfind(__T("<"));

I do not have MEDIAINFO_TRACE enabled


[EDIT]

Just commenting out the whole "if(Trace_Activated)" block seems to have fixed it.

Hopefully this doesn't break anything. But, AFAICT, it should be fine, since it's just some "tracing" code.

I supposed the "#ifdef" guards are missing in the code?


[EDIT 2]

Anyway, new MediaInfoXP builds (including MediaInfo 0.7.74) are available now:
https://github.com/lordmulder/mediai...ases/tag/v2.16

[Wilbert]

@Zenitram, Is it true that MediaInfo on sourceforge is bundled with adware? One of the reviews: "project now contains what I would consider malware -- it installs the Mezaa advertising client. ...". What happened?

[Zenitram]

Originally Posted by Wilbert

@Zenitram, Is it true that MediaInfo on sourceforge is bundled with adware? One of the reviews: "project now contains what I would consider malware -- it installs the Mezaa advertising client. ...". What happened?

Fixed.
But actually Sourceforge is not the main download site (actually it is no more linked from my websie for years, only old links not controlled by me go to Sourforge), please use the official website instead.

[stax76]

Originally Posted by Wilbert

@Zenitram, Is it true that MediaInfo on sourceforge is bundled with adware? One of the reviews: "project now contains what I would consider malware -- it installs the Mezaa advertising client. ...". What happened?

http://www.infoworld.com/article/292...l-suicide.html

[Zenitram]

Originally Posted by stax76

http://www.infoworld.com/article/292...l-suicide.html

FYI, for my side, it was slightly different because I was myself bundling third party offer, violating ToS of SF.
I never abandonned the account (which is a mirror, no more the main download site), and for me it was back as normal (no ads) 1 hour after I pinged them.

[SeeMoreDigital]

Originally Posted by foxyshadis

Another instance where MediaInfo needs "better parsing" and maybe "full parsing" options. People request that for bitrate all the time, but you could certainly make framerate more precise by parsing a few minutes of frames.

How difficult would it be for you to offer 'full parsing' and 'basic parsing' options to your regular version of MediaInfo?

Cheers