[FFmpeg-devel] ION MP4 causing issues

[Matthias Opitz]

Experts,

I am capturing mp4 files since several years with an ION SPEED PRO 
without any issues. I did not use the camera a while. Today I realized 
that either W10 (tested different laptops) and even Linux ins not able 
to play these files any more. Old ION files ( same device) still do work 
properly on W10 and Linux.

ffprobe does return :

#######################################################

h264 @ 0x55aa501f22e0] Invalid NAL unit size (2011631728 > 19056).

[h264 @ 0x55aa501f22e0] Error splitting the input into NAL units.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55aa501f1080] decoding for stream 0 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55aa501f1080] Could not find codec 
parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 
1280x720, 10335 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' 
options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IONX0070.MP4':
   Metadata:
     major_brand     : avc1
     minor_version   : 0
     compatible_brands: avc1isom
     creation_time   : 2020-10-13T21:07:17.000000Z
   Duration: 00:00:06.06, start: 0.000000, bitrate: 10468 kb/s
     Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 1280x720, 
10335 kb/s, 59.94 fps, 59.94 tbr, 90k tbn, 180k tbc (default)
     Metadata:
       creation_time   : 2020-10-13T21:07:17.000000Z
       handler_name    :  Ambarella AVC
       encoder         : Ambarella AVC encoder
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 
stereo, fltp, 127 kb/s (default)
     Metadata:
       creation_time   : 2020-10-13T21:07:17.000000Z
       handler_name    :  Ambarella AAC

##################################################################

fplay does return :

##################################################################
[aac @ 0x7f5ab402eac0] invalid band type
[aac @ 0x7f5ab402eac0] Sample rate index in program config element does 
not match the sample rate index configured by the container.
[aac @ 0x7f5ab402eac0] Too large remapped id is not implemented. Update 
your FFmpeg version to the newest one from Git. If the problem still 
occurs, it means that your file has a feature which has not been 
implemented.
[aac @ 0x7f5ab402eac0] If you want to help, upload a sample of this file 
to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel 
mailing list. (ffmpeg-devel at ffmpeg.org)
###################################################################

Any idea what causing this ?

I am not an ffmepg, play, probe expert. I used these packages to analyze 
the problem.

My impression is the files are corrupted. On the other hand the Ion 
still does take still images. I also tried HD and FHD, no difference.

Any idea, hint is appreciated :


Kind Regards

Matthias