On Sun, 2019-07-21 at 18:16 +0100, Ralph Corderoy wrote:
have you tried ‘mpv foo.mp4’ so you can see what it outputs about its video out, ‘VO’, choice before it starts playing?
Hi, thank you Ralph. $ ffmpeg -i IMG_2907.MOV -vcodec libx264 mp4_2907.mp4 [snip] $ mpv mp4_2907.mp4 Playing: mp4_2907.mp4 (+) Video --vid=1 (*) (h264 1920x1080 29.970fps) (+) Audio --aid=1 (*) (aac 2ch 44100Hz) VO: [gpu] 1920x1080 yuv420p [ao/alsa] Playback open error: Device or resource busy [ao/oss] Can't open audio device /dev/dsp: No such file or directory AO: [jack] 44100Hz stereo 2ch floatp AV: 00:00:06 / 00:00:06 (99%) A-V: 0.000 Exiting... (End of file) top CPU >20% mpv with spikes up to ≈70% $ mpv --hwdec=vaapi mp4_2907.mp4 Playing: mp4_2907.mp4 (+) Video --vid=1 (*) (h264 1920x1080 29.970fps) (+) Audio --aid=1 (*) (aac 2ch 44100Hz) [vo/gpu/vaapi-egl] vaAcquireSurfaceHandle() failed (invalid VASurfaceID) Cannot load libcuda.so.1 Using hardware decoding (vaapi). VO: [gpu] 1920x1080 vaapi[nv12] [ao/alsa] Playback open error: Device or resource busy [ao/oss] Can't open audio device /dev/dsp: No such file or directory AO: [jack] 44100Hz stereo 2ch floatp AV: 00:00:06 / 00:00:06 (99%) A-V: 0.000 Exiting... (End of file) top CPU ≈10% mpv no mentionable spikes Regards, Ralf