Recent version provides useless progress information

[Jozef Chutka]

In the most recent ffmpeg, when muxing stdin data into .mp4 the progress information is pretty useless and provides no valuable info:

ffmpeg -r 25 -f h264 -i - -map 0 -f mp4 -vcodec copy -pix_fmt yuv420p -t 60 -y out.mp4
Input #0, h264, from 'fd:':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: h264 (High), yuv420p(tv, bt709, progressive), 1280x720, 25 fps, 1200k tbr, 1200k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Output #0, mp4, to 'out.mp4':
  Metadata:
    comment         : Created in wide.video $APP_VERSION
    encoder         : Lavf61.3.104
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720, q=2-31, 25 fps, 1200k tbr, 12800 tbn
[mp4 @ 0x29690c0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
size=       0KiB time=N/A bitrate=N/A speed=N/A    
size=       0KiB time=N/A bitrate=N/A speed=N/A    
...
[out#0/mp4 @ 0x2969000] video:93KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 7.367472%
size=     100KiB time=N/A bitrate=N/A speed=N/A   

...its missing frame and time information.

However, when encoding is involved there is valuable frame= and time= info provided.

ffmpeg -r 25 -f rawvideo -pix_fmt rgba -s 1280x720 -i - -map 0 -f mp4 -vcodec libopenh264 -pix_fmt yuv420p ...
...
frame=   39 fps=0.0 q=-0.0 size=       0KiB time=00:00:01.56 bitrate=   0.2kbits/s speed=3.11x    
frame=  103 fps=103 q=-0.0 size=       0KiB time=00:00:04.12 bitrate=   0.1kbits/s speed=4.11x    

This is a regression as ffmpeg 6.0 provided valid frame+time information even for the first example (muxing only).