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teddyfroop's avatar
teddyfroop
Binge Watcher
3 years ago

AV1 16x9 video displaying properly

I am working on moving my video library to AV1 (Webm) format.  I ripped a movie that does not display correctly from my Roku Ultra.  Playing using the Emby app on PC and on Android TV it displays correctly.  Roku shows a 4x3  picture when the original is 16X9.

Is this a known issue?

 

Video

ID :1
Format :AV1
Format/Info :AOMedia Video 1
Format profile :Main@L3.0
Codec ID :av01
Duration :1 h 43 min
Source duration :1 h 43 min
Bit rate :716 kb/s
Width :720 pixels
Height :480 pixels
Display aspect ratio :2.25:1
Frame rate mode :Variable
Frame rate :23.976 FPS
Minimum frame rate :23.974 FPS
Maximum frame rate :29.970 FPS
Color space :YUV
Chroma subsampling :4:2:0
Bit depth :8 bits
Bits/(Pixel*Frame) :0.086
Stream size :531 MiB (78%)
Source stream size :531 MiB (78%)
Encoded date :2023-04-21 10:52:31 UTC
Tagged date :2023-04-21 10:52:31 UTC
Color range :Limited
Color primaries :BT.601 NTSC
Transfer characteristics :BT.709
Matrix coefficients :BT.601
Menus :3
Codec configuration box :av1C
app playback

5 Replies

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  • renojim's avatar
    renojim
    Community Streaming Expert
    3 years ago

    720x480 certainly stands out which is neither 16x9 or 4x3.  I'd have to look up how width, height, and display aspect ratio all play together or are supposed to play together.  Are there black bars (top/bottom or left/right) encoded into the video?  Can you post a sample somewhere?

    • teddyfroop's avatar
      teddyfroop
      Binge Watcher
      3 years ago

      Left and right - not top and bottom.

      Also if you look in the Video properties I attached it specifies the aspect ratio as

      Display aspect ratio :2.25:1

       

      The resolution matches the DVD this was ripped from so its a standard resolution.

      • renojim's avatar
        renojim
        Community Streaming Expert
        3 years ago

        Like I said, I don't know if/how "Display aspect ratio" is taken into account when the video is played back.  I can say that if there's black bars encoded into the video they will always be visible when played back on a Roku device.  When I rip a disc I always crop the black bars off using ffmpeg.