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Old 9th September 2019, 23:52   #1  |  Link
maczones
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Possible to add a subtitle if movie contains none?

Not sure if this question has been previously addressed but hope it can be answered, so here it is:

I have a blu-ray movie that originally came without subtitles. I went ahead and added an English subtitle using tsMuxer but when I play the movie it is very jerky and unstable. Since this blu-ray movie did not originally have subtitles, is there something extra I need to do when adding the subtitle or is this impossible to do under these circumstances?

TIA
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Old 10th September 2019, 03:07   #2  |  Link
videoh
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Is that a commercial bluray that you bought? Which one?
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Old 10th September 2019, 23:19   #3  |  Link
maczones
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Quote:
Originally Posted by videoh View Post
Is that a commercial bluray that you bought? Which one?
Yes. 633 Squadron UK release.

https://www.blu-ray.com/movies/633-S...lu-ray/233367/
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Old 13th September 2019, 20:56   #4  |  Link
maczones
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Can anybody help to address this question? Appreciate any help. More info: Movie frame rate is 23.976 and the frame rate of the inserted subtitles is also 23.976.

Last edited by maczones; 13th September 2019 at 21:02.
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Old 14th September 2019, 02:27   #5  |  Link
maczones
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Quote:
Originally Posted by maczones View Post
Can anybody help to address this question? Appreciate any help. More info: Movie frame rate is 23.976 and the frame rate of the inserted subtitles is also 23.976.

Another update on this mystery. I took the main video M2TS blu-ray file and added the sub .srt file in MKVtoolnix to convert it to MKV. The mkv video played fine with the added subs. I then reconverted the mkv file to M2TS and when I played the file, the same issues arose with the video breaking up and jerky. I know the mkv format is a container, so that explains why I can play it without the described issues but still don't understand why converting the mkv file back to an M2TS format it exhibits the same problems.


Last edited by maczones; 16th September 2019 at 02:13.
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Old 14th September 2019, 02:47   #6  |  Link
videoh
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Looks like tsmuxer has issues here. Try posting in the tsmuxer thread(s)?
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Old 16th September 2019, 02:00   #7  |  Link
maczones
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Quote:
Originally Posted by videoh View Post
Looks like tsmuxer has issues here. Try posting in the tsmuxer thread(s)?
tsmuxer thread:

Network Optix tsMuxeR. Version 2.6.12. www.networkoptix.com
Decoding H264 stream (track 1): Profile: High@4.1 Resolution: 1920:1080p Frame rate: 23.976
H.264 muxing fps is not set. Get fps from stream. Value: 23.976
H264 bitstream changed: insert pict timing and buffering period SEI units
Decoding LPCM stream (track 2): Bitrate: 2304Kbps Sample Rate: 48KHz Channels: 2 Bits per sample: 24bit
Decoding PGS stream (track 3): Resolution: 1920:1080 Frame rate: 23.976
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Old 16th September 2019, 03:31   #8  |  Link
filler56789
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Quote:
Originally Posted by maczones View Post
tsmuxer thread:

Network Optix tsMuxeR. Version 2.6.12. www.networkoptix.com
Decoding H264 stream (track 1): Profile: High@4.1 Resolution: 1920:1080p Frame rate: 23.976
H.264 muxing fps is not set. Get fps from stream. Value: 23.976
H264 bitstream changed: insert pict timing and buffering period SEI units
Decoding LPCM stream (track 2): Bitrate: 2304Kbps Sample Rate: 48KHz Channels: 2 Bits per sample: 24bit
Decoding PGS stream (track 3): Resolution: 1920:1080 Frame rate: 23.976
Probably videoh meant this ↓↓↓

https://forum.doom9.org/showthread.php?t=168539
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Old 16th September 2019, 01:03   #9  |  Link
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Quote:
Originally Posted by maczones View Post
Another update on this mystery. I took the main video M2TS blur-ray file and added the sub .srt file in MKVtoolnix to convert it to MKV. The mkv video played fine with the added subs. I then reconverted the mkv file to M2TS and when I played the file, the same issues arose with the video breaking up and jerky. I know the mkv format is a container, so that explains why I can play it without the described issues but still don't understand why converting the mkv file back to an M2TS format it exhibits the same problems.
tsMuxer accepts «native» Blu-Ray subpics (.SUP files). You can convert your .srt to .ssa and then to .sup and see what happens :–/
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Old 16th September 2019, 02:09   #10  |  Link
maczones
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Quote:
Originally Posted by filler56789 View Post
tsMuxer accepts «native» Blu-Ray subpics (.SUP files). You can convert your .srt to .ssa and then to .sup and see what happens :–/
I have successfully inserted .srt files in substitution to a resident PGS sub without converting the .srt to .ssa and then to .sup. Of course this is the first time I have a movie that has no subs to start with, so of course there is nothing to substitute.

I am assuming there must be something more that needs to be done with the blu ray file structure to recognize there is a sub so it can play normally instead of a distorted playback... just my own unproven assumptions of course.

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