mkv file format not supported about gyroflow

[wang-bin]

@wang-bin I'm using player->mediaInfo().video[0].duration

the latest build will read duration from metadata

[AdrianEddy]

why would you want to use mkv? As far as I know, no camera records in this format, and after transcoding or re-muxing it's very likely to lose the gyro data, so supporting mkv is not very useful in Gyroflow

[siefkenj]

I have video that has no gyro data that I have trimmed and saved as in the mkv format. I could convert everything to mp4 and then apply gyroflow, but it seem like mkv support might not be hard to add.

[AdrianEddy]

You need to load a lens profile to be able to click autosync for optical-only analysis

[AdrianEddy]

@wang-bin looks like this sample mkv file doesn't report duration in mdk, any idea why?

[wang-bin]

@wang-bin looks like this sample mkv file doesn't report duration in mdk, any idea why?

which duration do you read? duration from container is correct

Format: matroska,webm, range: 0 +13346ms, bitrate: 303214, size: 0
Metadata:
  ENCODER: Lavf58.76.100
Streams: 1
 Video:
  stream#0, range: 0 +0ms, frames: 0
  codec: h264 tag: 0 profile: 100 level: 31, yuv420p, bpc:8, bpp:12(8,8,8), channels:(1,1,1), map: 0 1 2 0, bitrate: 0, 960x540, fps: 29.97, bframes: 0
  extra data(55): 01 64 00 1F FF E1 00 24 67 64 00 1F AC 2B 20 1E 02 2F DE 02 20 00 00 7D 20 00 1D 4C 1C 00 00 03 01 55 CC 00 00 0D 59 F8 5D E5 C1 40 01 00 04 68 EB 8F 2C FD F8 F8 00 
  Metadata:
   DURATION: 00:00:13.346000000

[AdrianEddy]

@wang-bin I'm using player->mediaInfo().video[0].duration

[AdrianEddy]

thanks, I can confirm it works fine in latest dev build: https://gyroflow.xyz/devbuild/