ffmpeg height not divisible by 2 for webm video conversion

[FireMasterK]

Sep  8, 2024 16:47:48 WRN [libx264 @ 0xffffa88758b0] height not divisible by 2 (796x397) action="handle matrix event" command=ffmpeg event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message [email protected]@s.whatsapp.net room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks
Sep  8, 2024 16:47:48 WRN [vost#0:0/libx264 @ 0xffffa8743530] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height. action="handle matrix event" command=ffmpeg event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message [email protected]@s.whatsapp.net room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks
Sep  8, 2024 16:47:48 WRN Error while filtering: Generic error in an external library action="handle matrix event" command=ffmpeg event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message [email protected]@s.whatsapp.net room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks
Sep  8, 2024 16:47:48 WRN [out#0/mp4 @ 0xffffaa097eb0] Nothing was written into output file, because at least one of its streams received no packets. action="handle matrix event" command=ffmpeg event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message [email protected]@s.whatsapp.net room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks
Sep  8, 2024 16:47:48 ERR Error converting Matrix event error="failed to convert media (video/webm to video/mp4): ffmpeg error: exit status 187" action="handle matrix event" event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message [email protected]@s.whatsapp.net room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks
Sep  8, 2024 16:47:48 DBG Sent message checkpoint message_checkpoint={"event_id":"$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI","event_type":"m.room.message","info":"failed to convert media (video/webm to video/mp4): ffmpeg error: exit status 187","message_type":"m.video","reported_by":"BRIDGE","retry_num":0,"room_id":"!H5pxjSrKY2Dxwfb8MN:kavin.rocks","status":"PERM_FAILURE","step":"REMOTE","timestamp":1725814068066}
Sep  8, 2024 16:47:48 DBG Request completed action="handle matrix event" duration=50.221207 event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message method=PUT [email protected]@s.whatsapp.net req_body={"typing":false} req_id=7 response_length=2 response_mime=application/json room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks status_code=200 url=https://redacted/_matrix/client/v3/rooms/%21H5pxjSrKY2Dxwfb8MN:kavin.rocks/typing/@whatsapp_redacted:kavin.rocks?user_id=%40whatsapp_redacted%3Akavin.rocks
Sep  8, 2024 16:47:48 DBG Request completed action="handle matrix event" duration=9.985993 event_id=$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI event_type=m.room.message method=PUT [email protected]@s.whatsapp.net req_body={"body":"> <@kavin:kavin.rocks> Screencast from 2024-09-08 21-00-45.webm\n\n⚠ Your message may not have been bridged: failed to convert media (video/webm to video/mp4): ffmpeg error: exit status 187","format":"org.matrix.custom.html","formatted_body":"<mx-reply><blockquote><a href=\"https://matrix.to/#/!H5pxjSrKY2Dxwfb8MN:kavin.rocks/$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI\">In reply to</a> <a href=\"https://matrix.to/#/@kavin:kavin.rocks\">@kavin:kavin.rocks</a><br>Screencast from 2024-09-08 21-00-45.webm</blockquote></mx-reply>⚠ Your message may not have been bridged: failed to convert media (video/webm to video/mp4): ffmpeg error: exit status 187","m.relates_to":{"m.in_reply_to":{"event_id":"$JVp3iv2C1fkKr3aiRTf9dSbrCslRJzsnG3cOIpfBORI"}},"msgtype":"m.notice"} req_id=8 response_length=59 response_mime=application/json room_id=!H5pxjSrKY2Dxwfb8MN:kavin.rocks sender=@kavin:kavin.rocks status_code=200 url=https://redacted/_matrix/client/v3/rooms/%21H5pxjSrKY2Dxwfb8MN:kavin.rocks/send/m.room.message/mautrix-go_1725814068120779128_1?user_id=%40whatsapp_redacted%3Akavin.rocks

This happens when sending a webm video with a resolution that isn't divisible by two.