GPAC MP4Box Information, Feature Requests & Discussions [No bug reports] - Page 11

dimzon · 1st September 2005, 11:10

Quote:

Originally Posted by leowai

Just noticed the gpac updated yesterday.
@dimzon, did the following CVS update solved your problem?

Yeah! Seems like problem fixed (i have prodice a little quick tests)

Great work!

leowai · 1st September 2005, 15:59

Quote:

Originally Posted by dimzon

Yeah! Seems like problem fixed (i have prodice a little quick tests)

Good to hear that.

Quote:

Originally Posted by dimzon

Great work!

Indeed, all credits should go to the code writer (author of the mp4box program in GPAC project), jeanlf.

Cheers.

SeeMoreDigital · 22nd September 2005, 14:32

Does anybody have anything new to report?

Cheers

yaz · 22nd September 2005, 15:04

a new build is up on cd's site

Quote:

Latest CVS Changes 20/09/05
- changed module naming - all modules are now prefixed with "gm_", and module is loaded/unloaded at run-time
- changed isomedia file open API for better support of temporary directories
- simplified 2D blitter for non DirectX output: no more in-middle surface used, direct stretch, blit and yuv conversion to back buffer
- added software and hardware support for MaterialKey in 2D renderer
- added all project files for evc4
- added support for OpenGL-ES in 3D renderer, in DX and in GAPI plugins
* tested with Hybrid Graphics, Vincent3D. Suggested library is Hybrid implementation
* Klimt could compile but no decent results
* Result only tested on PocketPC with Win PPC2003
- added support for GDI drawing on WinCE to avoid weird menu behaviour in windowed mode
- added support for OpenGL drawing on WinCE to avoid weird menu behaviour in windowed mode
- added osmophone to gpac/applications, demo player for Smartphone devices (tested on SPV C500)
- fixed redraw bug in 2D renderer for simple video drawing (background was always repaint regardless of video transparency)
- added LASeR XML to SVG loader
- fixed UTF8 vs Win-CP text handling (BT and XMT parsers, subs->bifs and subs->ttxt converters)
- improved SRT -> 3GPP convertion - now accepts any number of <b>, <i>, <u> tags at random places. Also cleaned up TTXT->SRT conversion.
- fixed bug in unknown stsd boxes handling
- attempt to fixe gpac compilation on 64 bits platforms

the bests
y

dimzon · 22nd September 2005, 17:04

Is there any ability to change track names in MP4?
Haali Splitter reports "ISO GPAC Video Handler" if file was muxed by MP4BOX but there are another string if file produced by Nero Recode

JoeBG · 23rd September 2005, 19:13

Quote:

Originally Posted by dimzon

Is there any ability to change track names in MP4?
Haali Splitter reports "ISO GPAC Video Handler" if file was muxed by MP4BOX but there are another string if file produced by Nero Recode

You can do this with dumpster r. Here is a link to a useful threat about dumpster. I use it for every video.

Doom9 · 23rd September 2005, 19:18

Quote:

Is there any ability to change track names in MP4?

You could reimport into another mp4 and using the language tags mp4box offers..

JoeBG · 24th September 2005, 07:19

How dumpster works:

Open the file with right mouseclick\open with dumpster.
The tracks are in "moov"
Open a track, go to mdia/hdlr and you will see GPAC ISO MEDIA HDLR
You can change this with:
Main Video AVC: $4D61696E 20566964 656F2041 56430000 000000
Forced Sub TTXT: $466F7263 65642053 75622054 54585400 000000
Sub TTXT: $53756220 54545854 00000000 00000000 000000
Englisch TTXT:$456E676C 69736368 20545458 54000000 00000000 000000
Englisch 5.1 AAC: $456E676C 69736368 20352E31 20414143 00000000 000000

to change the language in the header information go to trak/mdia/mdhd
For a trcklist look here: http://forum.doom9.org/showthread.php?t=91879

yakima · 25th September 2005, 15:32

i've noticed that mp4box uses strange timescale values when importing some video tracks, i.e. 24999 for 25 fps or 24000 for 23,976, resulting in quite some scew.
this happens only with some (avi)-files, and only since 0.3.0 (0.2.4dev works fine). -nodrop and -fps have no effect on this & fps is set correctly in the source avi.
did anyone else notice this? could it be some rounding error? afaik, there is no option to set the timescale, is there?

EDIT: after some more tests, i've found that 0.2.4 doesn't always work either; the source files are quite old and a bit messed up. it seems within one of the avis, strh gives 24.9998 while avih says 25 fps, resulting in a mp4 with 25 fps and a timescale of 24999 for all versions of mp4box. however, for the other file that gives a strange timescale, both avi headers say 23.976 and in this case, version 0.2.4 gives the correct timescale of 23976.
i wonder why mp4box doesn't take fps as reference for choosing a timescale ...

dimzon · 26th September 2005, 12:04

Quote:

Originally Posted by yaz

a new build is up on cd's site

Can't find it!

yaz · 26th September 2005, 13:29

Quote:

Originally Posted by dimzon

Can't find it!

hmm ... i can

try this !
the bests
y

SeeMoreDigital · 26th September 2005, 16:40

Quote:

Originally Posted by dimzon

Can't find it!

There's a link to Celtic Druid's development builds on page one of this thread

SeeMoreDigital · 27th September 2005, 10:27

A few days ago Jean Le Feuvre was asked the following: -

Quote:

Date: 2005-09-22 06:28

May I ask if there has been any headway with VOBsub support?

To which Jean replied: -

Quote:

Date: 2005-09-27 00:38
Sender: jeanlf

Not really, I tried to find some info on the Decoder Specific Info used in such streams, without success. The rest shouldn't be too hard to implement, but without the DSI syntax I cannot do anything.

Anyone having the slightest clue what's in there is more than welcome.

So it would seem we've reached a brick wall for the time being.... Me thinks the next stop will be asking... the Ateme guys!

Cheers

bond · 1st October 2005, 10:05

strange, maybe he would need more sample files?

SeeMoreDigital · 1st October 2005, 10:22

Quote:

Originally Posted by bond

strange, maybe he would need more sample files?

Well, if he requires longer "NeroDigital" samples generated using Recode2, I can send him some on disc (or upload them) I guess....

Cheers

SeeMoreDigital · 13th October 2005, 21:37

Jean Le Feuvre has provided us with a little more information with regard to the "VOBsub" DecoderSpecificInfo issue and MP4Box

Quote:

Date: 2005-10-13 05:20
Sender: jeanlf
Logged In: YES
user_id=815447

If you look at such a VobSub track, there is some decoder intialization data (which can be seen with MP4Box -nhnt). This is what is called in MPEG-4 the DecoderSpecificInfo or "DSI" for short.

Its syntax is codec dependent, and in this case I have no idea what has been placed there, and thus cannot generate it at import time...

Can anybody help Jean out?

Cheers

Kurtnoise · 26th October 2005, 08:49

For those who are interessed by the last mp4box improvements and defunkt hack, here is a build...

Otherwhise the latest mp4box : here or there...

vsv · 28th October 2005, 10:24

Java player inside mp4 container is possible?

Drachir · 28th October 2005, 10:52

There is MPEG-J : http://www.chiariglione.org/mpeg/faq...-faq-mpegj.htm

But I don't know any free available implementation.

GPAC only supports JavaScript as far as I know.

vsv · 28th October 2005, 11:59

Drachir, Thank you for clarification and link. Will be nice to have only one mp4 file with menu, subs, chapters and embeded interactive player

22nd September 2005, 14:32	#203 \| Link
SeeMoreDigital Life's clearer in 4K UHD Join Date: Jun 2003 Location: Notts, UK Posts: 12,227	Does anybody have anything new to report? Cheers __________________ \| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 \| My Network Layout & A/V Gear \|

22nd September 2005, 17:04	#205 \| Link
dimzon BeHappy/MeGUI developer Join Date: Oct 2003 Location: Moscow, Russia Posts: 1,727	Is there any ability to change track names in MP4? Haali Splitter reports "ISO GPAC Video Handler" if file was muxed by MP4BOX but there are another string if file produced by Nero Recode __________________ BeHappy - AviSynth-based audio transcoding tool Audio encoding via AviSynth On2 VP7 is great in quality but it is unusable for long-term video backup puposes! Sincerely Yours, MCPD/MCTS

24th September 2005, 07:19	#208 \| Link
JoeBG stupid Join Date: Sep 2004 Location: Cologne Posts: 638	How dumpster works: Open the file with right mouseclick\open with dumpster. The tracks are in "moov" Open a track, go to mdia/hdlr and you will see GPAC ISO MEDIA HDLR You can change this with: Main Video AVC: $4D61696E 20566964 656F2041 56430000 000000 Forced Sub TTXT: $466F7263 65642053 75622054 54585400 000000 Sub TTXT: $53756220 54545854 00000000 00000000 000000 Englisch TTXT:$456E676C 69736368 20545458 54000000 00000000 000000 Englisch 5.1 AAC: $456E676C 69736368 20352E31 20414143 00000000 000000 to change the language in the header information go to trak/mdia/mdhd For a trcklist look here: http://forum.doom9.org/showthread.php?t=91879 __________________ cu Joe ------------------------ freedom is just another word for nothing left to loose Last edited by JoeBG; 24th September 2005 at 13:14.

25th September 2005, 15:32	#209 \| Link
yakima Registered User Join Date: Jul 2003 Posts: 53	mp4box timescale problem i've noticed that mp4box uses strange timescale values when importing some video tracks, i.e. 24999 for 25 fps or 24000 for 23,976, resulting in quite some scew. this happens only with some (avi)-files, and only since 0.3.0 (0.2.4dev works fine). -nodrop and -fps have no effect on this & fps is set correctly in the source avi. did anyone else notice this? could it be some rounding error? afaik, there is no option to set the timescale, is there? EDIT: after some more tests, i've found that 0.2.4 doesn't always work either; the source files are quite old and a bit messed up. it seems within one of the avis, strh gives 24.9998 while avih says 25 fps, resulting in a mp4 with 25 fps and a timescale of 24999 for all versions of mp4box. however, for the other file that gives a strange timescale, both avi headers say 23.976 and in this case, version 0.2.4 gives the correct timescale of 23976. i wonder why mp4box doesn't take fps as reference for choosing a timescale ... Last edited by yakima; 25th September 2005 at 16:32.

1st October 2005, 10:05	#214 \| Link
bond Registered User Join Date: Nov 2001 Posts: 9,770	strange, maybe he would need more sample files? __________________ Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ \| AVC/H.264 FAQ \| AAC FAQ \| MP4 FAQ \| MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora \| Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free

26th October 2005, 08:49	#217 \| Link
Kurtnoise Swallowed in the Sea Join Date: Oct 2002 Location: Aix-en-Provence, France Posts: 5,191	For those who are interessed by the last mp4box improvements and defunkt hack, here is a build... Otherwhise the latest mp4box : here or there...

28th October 2005, 10:24	#218 \| Link
vsv Registered User Join Date: Mar 2002 Location: kitchen Posts: 146	Java player inside mp4 container is possible?

28th October 2005, 10:52	#219 \| Link
Drachir Teetrinker Join Date: Jan 2002 Posts: 258	There is MPEG-J : http://www.chiariglione.org/mpeg/faq...-faq-mpegj.htm But I don't know any free available implementation. GPAC only supports JavaScript as far as I know. __________________ Play GO ( http://en.wikipedia.org/wiki/Go_(board_game))

28th October 2005, 11:59	#220 \| Link
vsv Registered User Join Date: Mar 2002 Location: kitchen Posts: 146	Drachir, Thank you for clarification and link. Will be nice to have only one mp4 file with menu, subs, chapters and embeded interactive player

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