audio/video sync is off in video

[teleshoes]

a/v sync in video is off by at least 0.3s on my xperia x, every time, with nothing else placing any load on the device. (a/v sync is also not great on sfos camera, but adv camera is doing it worse)

it looks like it gets worse the longer the video records, but its somewhat hard to tell.

the sync problem is greatly diminished on the selfie camera, although the video is upside down. (probably just because its lower resolution)

[piggz]

Could you record a video in both apps, then load the file into VLC or such and provide the codec/stream info as a comparison? thanks

[teleshoes]

whoops! i had no idea it records in 4k by default. thats probably why its worse...

anyway, as requested (from ffprobe):
adv:

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20191029_125422.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomiso2
    creation_time   : 2019-10-29T16:54:15.000000Z
  Duration: 00:00:12.84, start: 0.000000, bitrate: 12031 kb/s
    Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt470bg/bt470bg/smpte170m), 3840x2160, 11898 kb/s, SAR 1:1 DAR 16:9, 25.77 fps, 25.83 tbr, 3k tbn, 6k tbc (default)
    Metadata:
      creation_time   : 2019-10-29T16:54:15.000000Z
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2019-10-29T16:54:15.000000Z
      handler_name    : SoundHandler

sfos:

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '20191029_125305.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomiso2
    creation_time   : 2019-10-29T16:51:40.000000Z
  Duration: 00:00:12.61, start: 0.000000, bitrate: 12078 kb/s
    Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt470bg/bt470bg/smpte170m), 1920x1080, 11946 kb/s, SAR 1:1 DAR 16:9, 25.77 fps, 25.83 tbr, 3k tbn, 6k tbc (default)
    Metadata:
      creation_time   : 2019-10-29T16:51:40.000000Z
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2019-10-29T16:51:40.000000Z
      handler_name    : SoundHandler

[piggz]

Other than the resolution, everything else appears comparable. Can you compare like-for-like to see if we are any worse than jolla-camera?

[teleshoes]

finally got around to doing this. delay is much less on 1080p. its still noticeable, but it is now comparable to, or maybe exactly the same as, jolla-camera.