subtitle - 从电影文件中提取隐藏式字幕的最佳方法是什么？

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我需要从电影文件中提取隐藏字幕信息，我已经尝试过ccextractor但似乎不起作用。

我捕获了一个视频流(其中包含隐藏式字幕)并保存到文件中，然后运行 ​​ccextractor ...但它找不到任何东西!

我的视频样本如下:

http://dl.dropbox.com/u/10244901/gsd.mpg

http://dl.dropbox.com/u/10244901/gsd_b.mpg

第一次尝试:

cvlc -I dummy v4l2:///dev/video1:width=720:height=480:norm=ntsc:standard=ntsc:pixelformat=2:aspect-ratio=4\:3:channel=0 --sout "#transcode{vcodec=mp2v}:standard{access=file,mux=dummy,dst=gsd.mpg}"

lzzz@ideiatu:~/Downloads/ccextractor.0.64/linux$ ./ccextractor gsd.mpg 
CCExtractor 0.64, Carlos Fernandez Sanz, Volker Quetschke.
Teletext portions taken from Petr Kutalek's telxcc
--------------------------------------------------------------------------
Input: gsd.mpg
[Raw Mode: Broadcast] [Extract: 1] [Stream mode: Autodetect]
[Program : Auto ] [Hauppage mode: No] [Use MythTV code: Auto]
[Timing mode: Auto] [Debug: No] [Buffer input: No]
[Use pic_order_cnt_lsb for H.264: No] [Print CC decoder traces: No]
[Target format: .srt] [Encoding: Latin-1] [Delay: 0] [Trim lines: No]
[Add font color data: Yes] [Add font typesetting: Yes]
[Convert case: No] [Video-edit join: No]
[Extraction start time: not set (from start)]
[Extraction end time: not set (to end)]
[Live stream: No] [Clock frequency: 90000]
Teletext page: Autodetect]
Start credits text: [None]
Creating gsd.srt

-----------------------------------------------------------------
Opening file: gsd.mpg
File seems to be an elementary stream, enabling ES mode
Analyzing data in general mode


New video information found
[720 * 480] [AR: 02 - 4:3] [FR: 03 - 25] [progressive: yes]

133%  |  01:40
Number of NAL_type_7: 0
Number of VCL_HRD: 0
Number of NAL HRD: 0
Number of jump-in-frames: 0
Number of num_unexpected_sei_length: 0

Total frames time:      00:01:41:200  (2530 frames at 25.00fps)

Min PTS:                00:00:00:000
Max PTS:                00:01:41:200
Length:                 00:01:41:200

Initial GOP time:       00:00:00:000
Final GOP time:         00:01:40:800+10F
Diff. GOP length:       00:01:40:800+10F    (00:01:41:133)
Done, processing time = 0 seconds
This is beta software. Report issues to cfsmp3 at gmail...

第二次尝试:

cvlc -I dummy gsd.mpg --sout "#standard{access=file,mux=ts,dst=gsd_b.mpg}"



lzzz@ideiatu:~/Downloads/ccextractor.0.64/linux$ ./ccextractor gsd_b.mpg
CCExtractor 0.64, Carlos Fernandez Sanz, Volker Quetschke.
--------------------------------------------------------------------------
Input: gsd_b.mpg
[Raw Mode: Broadcast] [Extract: 1] [Stream mode: Autodetect]
[Program : Auto ] [Hauppage mode: No] [Use MythTV code: Auto]
[Timing mode: Auto] [Debug: No] [Buffer input: No]
[Use pic_order_cnt_lsb for H.264: No] [Print CC decoder traces: No]
[Target format: .srt] [Encoding: Latin-1] [Delay: 0] [Trim lines: No]
[Add font color data: Yes] [Add font typesetting: Yes]
[Convert case: No] [Video-edit join: No]
[Extraction start time: not set (from start)]
[Extraction end time: not set (to end)]
[Live stream: No] [Clock frequency: 90000]
Teletext page: Autodetect]
Start credits text: [None]
Creating gsd_b.srt

-----------------------------------------------------------------
Opening file: gsd_b.mpg
File seems to be a transport stream, enabling TS mode
Analyzing data in general mode
Decode captions from MPEG-2 video stream [0x02]  -  PID: 68

New PID found: 68


New video information found
[720 * 480] [AR: 02 - 4:3] [FR: 03 - 25] [progressive: yes]

100%  |  00:00
Number of NAL_type_7: 0
Number of VCL_HRD: 0
Number of NAL HRD: 0
Number of jump-in-frames: 0
Number of num_unexpected_sei_length: 0

Total frames time:      00:01:41:040  (2526 frames at 25.00fps)

Min PTS:                02:59:52:437
Max PTS:                02:59:52:677
Length:                 00:00:00:240

Initial GOP time:       00:00:00:000
Final GOP time:         00:01:40:800 +6F
Diff. GOP length:       00:01:40:800 +6F    (00:01:41:000)
Done, processing time = 0 seconds
This is beta software. Report issues to cfsmp3 at gmail...

Answer 1

有些电影没有包含字幕的隐藏文件，但字幕被硬编码到视频中，这意味着它们实际上是视频的一部分，无法区分。

您可以尝试在 Google 上搜索电影字幕的独立版本。