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• Insta360 RS One Inch damaged file correction from dual 360 to equirectangular not lining up perfectly [closed]

  25 juillet 2024, par Barry Houldsworth

  I replaced my old Theta Z1 with an Insta360 RS One Inch.

  


  The first time using it for an actual job, 6 of the 50 photos I took came back with damaged files. enter image description here

  


  The Insta360 support team have been completely useless.

  


  I have an image but it's sort of a dual fisheye thing.enter image description here

  


  I found ffmpeg and tried to use that to correct...and it's soooo close but not quite there.

  


  Here is the command I used to process the dual fisheye image to equirectangular

  


  ffmpeg -i input.jpg -vf v360=dfisheye:e:pitch=-180:roll=0:yaw=100:ih_fov=193:iv_fov=193 -qscale:v 1 -frames:v 1 output2.jpg

  


  It works great except there is a very noticeable seam where the two images join. It looks like one of the images needs to be nudged up just a bit before the conversion. But...I don't know how to do that.

  


  Note that this is for photos not video.

  


  Any help would be much appreciated.

  


  Thanks !

  


  I tried the command above and was hoping it would convert from a dual fisheye image to an equirectangular image.

  


  It does work but there is a noticable seam where the two images join.

  


  I have tried tweaking the fov values but that did not seem to help.

  


• How do I reverse a video in ffmpeg ?

  19 avril 2023, par Will Beeson

  - Full Error :

  


  Stream specifier 's1:v' in filtergraph description [0]split=2:outputs=2[s0][s1] ;[s1:v]reverse[s2] ;[s0][s2]concat=a=0:n=2:v=1[s3] matches no streams.

  


  - Formatted Error

  


  

  • [0]split=2:outputs=2[s0][s1] ;

  


  • [s1:v]reverse[s2] ;

  


  • [s0][s2]concat=a=0:n=2:v=1[s3]

  


  


  - Code :

  


  instances = (
    ffmpeg
    .input(self.video_file)
    .filter_multi_output(filter_name="split", outputs=2)
)
ordered_edits = []
for i in range(2):
    if i%2 == 0:
        ordered_edits.append(
            instances[i]
        )
    else:
        ordered_edits.append(
            instances[i].video.filter(filter_name="reverse")
        )
(
    ffmpeg
    .concat(*ordered_edits, a=0, v=1)
    .output('done/output.mp4')
    .run(overwrite_output=True))


  


  Looking at the error code, it seems like s1:v should be a valid reference. The only thing I can think of is that there is an issue saving an exclusive video input into a nonspecified output. The files don't actually have any audio, I just want the video.

  


  I'm lost, please help ffmpeg experts of the world !

  


• Play mpeg-2 file with 608/708 embedded captions out Decklink SDI

  29 octobre 2022, par asperi

  I have built ffmpeg with decklink support, it plays my mpg file fine out the SDI but not seeing any captions on my works broadcast monitor (JVC DT-V17G1Z). This monitor shows captions on SDI from my Mojito card but trying to get it to work with a BlackMagic 4k extreme. The mpg file has embedded 608 and 708 captions. Using the to play-

  


  ffmpeg -i C:\video\RD2838_720p.mpg -f decklink -pix_fmt uyvy422 "DeckLink 4K Extreme"


  


  MediaInfo on captinos :

  


  Text #1


  


  ID : 4096 (0x1000)-CC1
Menu ID : 1 (0x1)
Format : EIA-608
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 28 min 30 s
Bit rate mode : Constant
Stream size : 0.00 Byte (0%)
Language : English
CaptionServiceName : CC1

  


  Text #2
ID : 4096 (0x1000)-1
Menu ID : 1 (0x1)
Format : EIA-708
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Duration : 28 min 30 s
Bit rate mode : Constant
Stream size : 0.00 Byte (0%)
Language : English

  


  How do I get the Decklink 4k to pass the captions ? Thanks !