Small subtitles when muxing with Mkvmerge, Subtitle Edit, Aegis.

[gibarian]

I tried to mux a .sub on an .mkv file (original file was an MP4) but the results are comically small (when compared to the hardcoded ones):


[Attachment 82431 - Click to enlarge]


[Attachment 82432 - Click to enlarge]

That's how it looks on my Panasonic TV, and on SMPlayer. On VLC, it looks as it is supposed to:


[Attachment 82434 - Click to enlarge]


[Attachment 82435 - Click to enlarge]

I converted and edited the original .srt file with Aegis into an .ssa file, which I converted later (using Subtitle Edit) to the .sup file I used on the muxing process with Mkvmerge.

The mediainfo of the resulting muxed subtitle, is this:

Text
ID                                       : 3
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 1 h 52 min
Bit rate                                 : 7 453 b/s
Frame rate                               : 0.324 FPS
Count of elements                        : 2182
Stream size                              : 5.98 MiB (0%)
Language                                 : Spanish
Default                                  : Yes
Forced                                   : No

Going over that data, I noticed that the stream size is smaller, when compared to other video files I have:

MOSCOW ON THE HUDSON

Text
ID                                       : 3
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 1 h 55 min
Bit rate                                 : 36.2 kb/s
Frame rate                               : 0.410 FPS
Count of elements                        : 2846
Stream size                              : 30.0 MiB (1%)
Language                                 : English
Default                                  : No
Forced                                   : No


FIREFOX

Text #1
ID                                       : 3
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 2 h 14 min
Bit rate                                 : 30.2 kb/s
Frame rate                               : 0.311 FPS
Count of elements                        : 2502
Stream size                              : 29.0 MiB (1%)
Language                                 : English
Default                                  : Yes
Forced                                   : No

Text #2
ID                                       : 4
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 2 h 15 min
Bit rate                                 : 23.4 kb/s
Frame rate                               : 0.271 FPS
Count of elements                        : 2212
Stream size                              : 22.7 MiB (0%)
Language                                 : French
Default                                  : No
Forced                                   : No

Text #3
ID                                       : 5
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 2 h 13 min
Bit rate                                 : 23.7 kb/s
Frame rate                               : 0.285 FPS
Count of elements                        : 2282
Stream size                              : 22.7 MiB (0%)
Language                                 : Spanish
Default                                  : No
Forced                                   : No

Text #4
ID                                       : 6
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 2 h 10 min
Bit rate                                 : 19.5 kb/s
Frame rate                               : 0.294 FPS
Count of elements                        : 2307
Stream size                              : 18.3 MiB (0%)
Language                                 : Japanese
Default                                  : No
Forced                                   : No

AMERICAN CRIME STORY

Text
ID                                       : 3
Format                                   : PGS
Muxing mode                              : zlib
Codec ID                                 : S_HDMV/PGS
Codec ID/Info                            : Picture based subtitle format used on BDs/HD-DVDs
Duration                                 : 57 min 39 s
Bit rate                                 : 41.1 kb/s
Frame rate                               : 0.549 FPS
Count of elements                        : 1898
Stream size                              : 17.0 MiB (1%)
Language                                 : English
Default                                  : Yes
Forced                                   : No

I don't understand what I am doing wrong here.

[Ennio]

Your resulting SUP-file indeed seems rather small, in relation to its runtime. Have you tried setting a larger font size in the export window?

[netmask56]

In mkvtoolnix turn off zlib let Compression = No extra compression, increase the font size

[gibarian]

In mkvtoolnix turn off zlib let Compression = No extra compression, increase the font size

This made no difference regarding the size of subtitles, it seems like the trick had to do with the font size.

[gibarian]

Your resulting SUP-file indeed seems rather small, in relation to its runtime. Have you tried setting a larger font size in the export window?

This worked. However, not entirely:


[Attachment 82520 - Click to enlarge]

It seems like the position set on the .ass file while editing it is lost during the conversion to .sup.

[netmask56]

Is there any reason why you need SUP? ASS has positioning capabilities

[gibarian]

Is there any reason why you need SUP? ASS has positioning capabilities

It has to do with my Panasonic TV, a tc-32fs500h. It's player tends to display .ass subtitles like this:


[Attachment 82522 - Click to enlarge]


[Attachment 82523 - Click to enlarge]

This style of subtitle is hard to read, and there is no way to change it. The only workaround is to use PGS based subtitles, or .sub.

[ProWo]

Edit the sup with BDsupedit and resize it to match your movie resolution.
https://www.videohelp.com/software/BDSupEdit

[Ennio]

This worked. However, not entirely...

It seems like the position set on the .ass file while editing it is lost during the conversion to .sup.

Possible, but I can also imagine your tv's internal player doesn't honour the position coordinates. Are you sure that you have properly set the positions in your .sup file?

[gibarian]

Edit the sup with BDsupedit and resize it to match your movie resolution.
https://www.videohelp.com/software/BDSupEdit

I've already adjusted it using Subtitle Edit:


[Attachment 82537 - Click to enlarge]

The issue is not so much the resolution, but the position of the subtitle on the screen. Subtitle Edit can export and edit .sub files to some degree, but seems unable to edit the position of the subtitle.


[Attachment 82538 - Click to enlarge]

[gibarian]

This worked. However, not entirely...

It seems like the position set on the .ass file while editing it is lost during the conversion to .sup.

Possible, but I can also imagine your tv's internal player doesn't honour the position coordinates. Are you sure that you have properly set the positions in your .sup file?

The positions were verified in both Aegis and VLC:


[Attachment 82539 - Click to enlarge]

The issue seems to be when the file is exported to .sup format.