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Autres articles (20)
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Contribute to translation
13 avril 2011You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
MediaSPIP is currently available in French and English (...) -
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (5105)
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Freeze frames at a time on videos and slow down videos
24 avril 2020, par Nguyễn TrọngSuppose I have an mp4 video with a duration of 60 seconds.



I want to freeze 1 frame at the 10th second and 40th second and then extend them to about 3 seconds.
At the same time I want to increase the speed of the video to 2 times from the 1 to 20 seconds and 2 times the video slow from 30 to 60 seconds.
The video output I received was 3 + 3 + (20 - 1) * 2 + (30 - 20) + (60-30) * 2 = 108 seconds
Is there a way to do it in one statement ?



Thank in advance and sorry for my bad english.


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Font Size Mismatch When Using Fallback Fonts in FFmpeg ASS Subtitles
6 janvier, par Mostafa FathiI’m facing an issue with font size mismatch in ASS subtitles rendered by FFmpeg when combining English text with Arabic or Persian characters.


Steps to Reproduce :


1.Subtitle File :
Here’s an example of the ASS subtitle file :


[Script Info]
Title: Generated ASS
ScriptType: v4.00+
WrapStyle: 2
ScaledBorderAndShadow: yes
YCbCr Matrix: none
PlayResX: 1920
PlayResY: 1080

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default, ABeeZee, 40, &H00FFFFFF, &H000000FF, &H00000000, &H00000000, -1, 0, 0, 0, 100, 100, 0, 0, 1, 1, 0, 2, 10, 10, 10, 1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.00,0:00:05.00,Default,,0,0,0,,Hello! This is English text.
Dialogue: 0,0:00:05.00,0:00:10.00,Default,,0,0,0,,سلام! This is mixed Arabic/English text.



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- Command Used :




ffmpeg -i input.mp4 -vf "ass=subtitle.ass" output.mp4



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- Screenshots :
Below are two screenshots of the issue :




• Text rendered with the main font (ABeeZee) is correct.




• Text rendered with the fallback font (Cinema) appears larger/smaller in size.




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- Debug Logs :




[Parsed_ass_0 @ 0xb4000079f04f8210] libass API version: 0x1701000
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] libass source: commit: 0.17.1-0-ge8ad72accd3a84268275a9385beb701c9284e5b3
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Shaper: FriBidi 1.0.13 (SIMPLE) HarfBuzz-ng 8.0.1 (COMPLEX)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Using font provider fontconfig
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Added subtitle file: '/data/***/ass_file.ass' (4 styles, 29 events)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] fontselect: (ABeeZee, 400, 0) -> /data/***/ABeeZee_regular.ttf, 0, ABeeZee-Regular
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Glyph 0x633 not found, selecting one more font for (ABeeZee, 400, 0)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] fontselect: (ABeeZee, 400, 0) -> /data/***/Cinema.ttf, 0, Cinema



Question :


How can I ensure that text rendered with fallback fonts has the same size as the main font ? Are there specific settings in FFmpeg or the ASS subtitle format that can address this issue ? Alternatively, is there a way to manually adjust the scaling of fallback fonts in FFmpeg ?


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File input of avformat_open_input in ffmpeg
28 février 2016, par Justin ChangI’m trying to use function
avformat_open_input
in FFmpeg to open the file which contains Chinese word.For example :
char* file="C:/測試/baby.mp4";
avformat_open_input(&pFormatCtx, file, NULL, NULL);But, it seems to be failed.
My question is how do I pass the file path which contains Chinese (or other languages except for English) ?