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View Full Version : ffdshow and embedded MPEG 4 Timed Text Subtitles


pcjco04
3rd November 2005, 18:55
I tried to render Timed Text Subtitles embedded into MPEG 4 file with ffdshow internal subtitles renderer (using MPC in normal rendering (notVRM9), VSFilter disabled).

It works but it renders everything in normal fonts (no italics).

The source file is a SRT file mux into the MP4 with mp4box.
If I extract the subtitle from the MP4 to SRT format, it still contains italics subs, so I think the style information is inside the MPEG-4 but not used by ffdshow.

(for informationm it is the same problem if I use VSFilter or the MPC internal subtitles renderer in VRM9 mode.)

Is there a way to render the style from ttext subtitles using ffdshow ?

bond
3rd November 2005, 20:25
ffdshow can handle fonts with size and color attributes, but not italic afaik?

try to ask milan about it

moved

pcjco04
3rd November 2005, 23:40
It was already a request on ffdshow sourceforge page. I just added a comment there.

http://sourceforge.net/tracker/index.php?func=detail&aid=1179341&group_id=53761&atid=471489

I hope this feature will be extended in ffdshow and vsfilter.

DeeGee
4th November 2005, 07:14
Odd, I just lately made some dvd-backups and the italics worked on those. Only broblem was that the normal text used the font defined by ffdshow configuration and italics used a font defined by the mp4box (when you convert the .sub/.srt file to .ttxt the .ttxt file has defined a font for the italics). So it was little bit stupid/annoying looking when the italic text was also in a completely different looking font.
normal (http://students.oamk.fi/~t3paja01/sekalaista/grab01050.png)
italics (http://students.oamk.fi/~t3paja01/sekalaista/grab01500.png)

pcjco04
4th November 2005, 09:25
DeeGee, what player do you use ?

DeeGee
8th November 2005, 19:05
Media Player Classic.