ffmpeg 4.2.3 bug: Do not overwrite the file even "y" is pressed

[elias tsolis]

ffmpeg -f concat -safe 0 -i VIDEOFILES_short.txt -filter_complex \

"[0:v] setpts=PTS-STARTPTS[v1]; \

[0:v] setpts=PTS-STARTPTS[v2]; \
[v1][v2]concat[v12]; \
[0:v] setpts=PTS-STARTPTS[v3]; \
[0:v] setpts=PTS-STARTPTS[v4]; \
[v3][v4]concat[v34]; \
[0:v] setpts=PTS-STARTPTS[v5]; \
[v5]vflip, hflip[v5flip]; \
[v12][v34][v5flip]concat=n=3:v=1, scale=1920:1080[out]" -map "[out]" -r 32 -crf 14 -vcodec libx264 -vb 20M video_out_FF.avi

ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers

built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --enable-gpl --enable-libx264 --enable-libvpx --enable-libmp3lame --enable-libopus
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55f126a78400] Invalid mdhd time scale 0, defaulting to 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55f126a78400] Auto-inserting h264_mp4toannexb bitstream filter
[concat @ 0x55f126a6dbc0] Could not find codec parameters for stream 2 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[concat @ 0x55f126a6dbc0] Could not find codec parameters for stream 4 (Unknown: none): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, concat, from 'VIDEOFILES_short.txt':

Duration: N/A, start: 0.000000, bitrate: 60138 kb/s

Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 2704x1520 [SAR 1:1 DAR 169:95], 60010 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc
Metadata:

creation_time : 2020-06-12T17:51:41.000000Z
handler_name : GoPro AVC
encoder : GoPro AVC encoder
timecode : 17:51:42:25

Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
Metadata:

creation_time : 2020-06-12T17:51:41.000000Z
handler_name : GoPro AAC
timecode : 17:51:42:25

Stream #0:2: Unknown: none
Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 0 kb/s
Metadata:

creation_time : 2020-06-12T17:51:41.000000Z
handler_name : GoPro MET

Stream #0:4: Unknown: none

File 'video_out_FF.avi' already exists. Overwrite ? [y/N] y
Not overwriting - exiting

[Carl Eugen Hoyos]

Please test current FFmpeg git head and please test with a simplified command line (works fine here).

[elias tsolis]

I dont know why! Now ffmpeg command "overwrite file" works fine when I press "y". file is overwritten, if it is existed. Weird! Maybe it was a machine-specific problem! Sorry for the fuzz!

[Carl Eugen Hoyos]

Thank you for the confirmation.