Cannot play local mp4 file with qml video element on Android 8

An mp4 video encoded on a linux machine from an rtsp source (camera) using this pipeline:

gst-launch -e <rtsp_url> latency=100 ! queue ! rtph264depay ! h264parse ! mp4mux ! filesink <local_file.mp4>

can't be played locally on Android 8 (tested on Nexus 5x and Huawei Mate 10 lite).

The behavior can be tested using the qmlvideo example (tested with Qt 5.10.1 and Qt 5.12.1).

On Android 6 and Android 4.4 it works.

Debug messages show these errors:

D MediaPlayerNative: Action:start, CurrentState:MEDIA_PLAYER_STARTED

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

W GrallocMapperPassthrough: buffer descriptor with invalid usage bits 0x2000

D MediaPlayerNative: Message: MEDIA_ERROR(100), ext1=MEDIA_ERROR_UNKNOWN(1), ext2=0xfffffc10

E MediaPlayerNative: error (1, -1008)

D MediaPlayerNative: [notify] : [1204] callback app listenerNotNull=1, send=1

D MediaPlayerNative: [notify] : [1216] callback application

D MediaPlayerNative: Message: MEDIA_ERROR(100), ext1=MEDIA_ERROR_UNKNOWN(1), ext2=0xfffffc10

E MediaPlayerNative: error (1, -1008)

D MediaPlayerNative: [notify] : [1204] callback app listenerNotNull=1, send=1

D MediaPlayerNative: [notify] : [1216] callback application

E MediaPlayer: Error (1,-1008)

I MediaPlayer: [HSM] stayAwake false uid: 10141, pid: 17583

I MediaPlayer: [HSM] stayAwake false uid: 10141, pid: 17583

E MediaPlayer: Error (1,-1008)

I MediaPlayer: [HSM] stayAwake false uid: 10141, pid: 17583

D MediaPlayerNative: Message: Unknown MediaEventType(8), ext1=0, ext2=0x0

D MediaPlayerNative: Action:reset_l, CurrentState:MEDIA_PLAYER_IDLE

The same file is normally played on other platforms (Windows 10) or using other Android players also on Android 8.