Flickering subtitles with Format Factory

[Valerc]

Hey, I am trying to add .ssa subtitles to a .mov video and I get flickering subtitles.

I've read it can be that my CPU is slow. But is it that it's just an effect produced while playing them or they are really flickering in the video I created?

How can I solve this, please???

[poisondeathray]

Hey, I am trying to add .ssa subtitles to a .mov video and I get flickering subtitles.

I've read it can be that my CPU is slow. But is it that it's just an effect produced while playing them or they are really flickering in the video I created?

How can I solve this, please???

What kind of flickering ? Brightness/luminance or aliasing ?

Does if flicker on a different , faster computer ? If no , then it's your computer or something about your setup

Is there any animation in the subtitles? Did you use any thin fonts ?

What kind of video compression? What bitrate? Did you maybe inadvertently encode interlaced ?


You can upload a small sample - "a video is worth a thousand words"

[Valerc]

Hi poisondeathray!! Thanks so much!!! I'm not sure about some of the answers. I've been trying many things.

It also flickers the same way on the other computer, but it's similar to this one, with 2G RAM.

No animation at all. Just some italics. Thin fonts??

Video compression? YOu mean what codec? H264. Bitrate is around 5000 kbps. I used the option Deinterlaced/No from Format factory

Not sure about the type of flickering. It's like a repeated blink. Like a fast lightning effect.

I will send you the video via PM.

Thanks!

[Valerc]

These are the specs for the file:

General
Complete name : C:\Users\Valentina\Desktop\DP3_1080\DP3 - LFH_1080.mov
Format : MPEG-4
Format profile : QuickTime
Codec ID : qt
File size : 393 MiB
Duration : 10mn 10s
Overall bit rate : 5 402 Kbps
Encoded date : UTC 2012-03-23 21:24:04
Tagged date : UTC 2012-03-23 22:00:18
Writing library : Apple QuickTime
Media/UUID : 11027891-7BA2-4708-81FA-39371AC8467E
Media/History/UUID : 51BC4843-13EB-429F-BAA0-92E85A0F4CBF

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : No
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 10mn 10s
Bit rate : 5 091 Kbps
Width : 1 888 pixels
Original width : 1 920 pixels
Height : 1 062 pixels
Original height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.085
Stream size : 370 MiB (94%)
Language : English
Encoded date : UTC 2012-03-23 21:59:42
Tagged date : UTC 2012-03-23 22:00:18
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 10mn 10s
Bit rate mode : Constant
Bit rate : 320 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 22.2 MiB (6%)
Language : English
Encoded date : UTC 2012-03-23 21:59:42
Tagged date : UTC 2012-03-23 22:00:18
Material_Duration : 610496
Material_StreamSize : 23325121

Menu
ID : 3
Language : English
Encoded date : UTC 2012-03-23 22:00:18
Tagged date : UTC 2012-03-23 22:00:18

[Valerc]

Hi!

I'm having trouble with the subtitles of a video, which keep flickering. I was told that the subtitles go "on/off/on" instead of just "on/off". So, they go on and off for one extra frame or so, apparently, and that could be probably the cause for the flickering.

The ssa file is like this:

Dialogue: Marked=0,0:03:42.24,0:03:45.63,Default,NTP,0000,00 00,0000,!Effect,{\i1}Luego del alta, fue operado.\NTiene un tubo de alimentación.{\i0}
Dialogue: Marked=0,0:03:45.74,0:03:47.55,Default,NTP,0000,00 00,0000,!Effect,Es la mezcla de comida de Simon.
Dialogue: Marked=0,0:03:47.60,0:03:52.84,Default,NTP,0000,00 00,0000,!Effect,{\i1}Igual que para cualquier niño\Nde tres años y medio, pero mezclado.{\i0}
Dialogue: Marked=0,0:03:52.87,0:03:53.87,Default,NTP,0000,00 00,0000,!Effect,{\i1}Y se ve igual.{\i0}
Dialogue: Marked=0,0:03:54.30,0:03:57.27,Default,NTP,0000,00 00,0000,!Effect,Cada vez que comes,\Npones uno en el sartén
Dialogue: Marked=0,0:03:57.38,0:03:59.34,Default,NTP,0000,00 00,0000,!Effect,y luego puede usar el iPad.
Dialogue: Marked=0,0:03:59.58,0:04:03.54,Default,NTP,0000,00 00,0000,!Effect,{\i1}Lo siguiente es que empiece\Na comer más por la boca.{\i0}
Dialogue: Marked=0,0:04:03.61,0:04:05.07,Default,NTP,0000,00 00,0000,!Effect,{\i1}Es una comida terapéutica.{\i0}
Dialogue: Marked=0,0:04:05.69,0:04:10.01,Default,NTP,0000,00 00,0000,!Effect,Muy bien, Simon... Dos bocados...
Dialogue: Marked=0,0:04:11.87,0:04:12.89,Default,NTP,0000,00 00,0000,!Effect,Mastica y traga.
Dialogue: Marked=0,0:04:13.00,0:04:14.41,Default,NTP,0000,00 00,0000,!Effect,{\i1}Es lo que cuesta más.{\i0}
Dialogue: Marked=0,0:04:14.45,0:04:16.95,Default,NTP,0000,00 00,0000,!Effect,{\i1}Comer es complicado,\Ny el riesgo es alto.{\i0}
Dialogue: Marked=0,0:04:17.02,0:04:18.86,Default,NTP,0000,00 00,0000,!Effect,{\i1}Si no traga bien, se atraganta.{\i0}






Does anybody see something wrong which could be interpreted as a kind of overlapping by the program? I'm using Format Factory to add the subtitles and the video is MOV with H264 and 29.97 fps.


Thanks!