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• Issue with repairing 3GP video using untrunc - Error : bad track : 's263'

  2 juillet 2023, par sifirib

  I am trying to repair a corrupted 3GP video using the untrunc program, but I'm facing an issue due to an error.

  


  The command I ran :

  


  ./untrunc -v ~/Desktop/logic/Video0086.3gp ~/Desktop/logic/Video0035.3gp


  


  I am running Ubuntu 20.04 LTS and using the 'v308-d72ec32' version of the untrunc. The error message I encounter is as follows :

  


  Info: version 'v308-d72ec32' using ffmpeg '4.4.2-0ubuntu0.22.04.1'
Info: reading /home/hsrv/Desktop/logic/Video0086.3gp
Info: parsing healthy moov atom ... 
ftyp_ = 'mp42'
[amrnb @ 0x56075d7656c0] Multiple frames in a packet.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/hsrv/Desktop/logic/Video0086.3gp':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2014-04-26T21:38:29.000000Z
    com.android.version: 12
  Duration: 00:02:22.80, start: 0.000000, bitrate: 154 kb/s
  Stream #0:0(eng): Video: h263 (s263 / 0x33363273), yuv420p, 176x144 [SAR 12:11 DAR 4:3], 140 kb/s, 10.74 fps, 11 tbr, 90k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2023-07-02T15:34:22.000000Z
      handler_name    : VideoHandle
      vendor_id       : [0][0][0][0]
  Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, flt, 12 kb/s (default)
    Metadata:
      creation_time   : 2023-07-02T15:34:22.000000Z
      handler_name    : SoundHandle
      vendor_id       : [0][0][0][0]
ss: s263 is_stable: 0
ss: using f=7 span
assuming constant duration of 640 for 'samr' (x1785)

Info: unknown track 's263' found -> fallback to dynamic stats
created dummy track 'free'
removed dummy track 'free'
first_failed: 0 of 101
simpleOrder: 0 
order ( 101): (0, 14) (0, 11) (0, 11) (0, 12) (0, 11) (0, 12) (0, 11) (0, 12) (0, 11) (0, 11) (0, 11) (0, 11) (0, 12) (0, 12) (0, 11) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 11) (0, 11) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 11) (0, 11) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 11) (0, 11) (0, 12) (0, 11) (0, 11) (0, 12) (0, 12) (0, 11) (0, 12) (0, 12) (0, 11) (0, 10) (0, 12) (0, 12) (0, 12) (0, 11) (0, 12) (0, 11) (0, 10) (0, 12) (0, 11) (0, 11) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 12) (0, 10) (0, 12) (0, 11) (0, 11) (0, 12) (0, 12) (0, 12) (0, 12) 
isTrackOrderEnough: 0  (sz=0)
genPatternPerm of: s263
0 s263 0.918296 3
1 samr 1 2
genPatternPerm of: samr
0 s263 4.8125 32
1 samr 0 1
has_zero_transitions_: 0
**Error: bad track: 's263'**


  


  This error message indicates that the untrunc program is having trouble with a track named 's263'. This track could be a track or codec within the video file.

  


  How can I resolve this error and successfully repair the corrupted 3GP video ? What steps should I follow or can you suggest an alternative approach ?

  


  Thank you in advance !

  


  I was expecting trunc tool to fix the corrupted/trunced video. But it gave me this error and no matter how much I searched for a solution, I couldn't find anything.

  


• Installing FFMPEG on my EC2 instance takes too long ; what am I doing wrong ? [closed]

  24 août 2023, par Shaban Khawar

  I found a good article on how to download onto my EC2 instance : link
Here's the issue. It takes forever ! It takes around 15 minutes to install.

  


  I'm running my EC2 instance on Amazon Linux 2023, so no apt-get for me.
Also my EC2 instance is created by my EB environment, so if auto-scaling occurs, my instance will be terminated and a new one will be created. I can set .ebextensions to run all the commands to install FFMPEG again but as mentioned above, it takes forever ! That means for 15-20 minutes, my server is down because of one dependancy. I feel like I'm going about this the wrong way, so any advice is appreciated.

  


• Flutter ffmpeg kit : Invalid size error when trying to scale video

  27 juillet 2023, par veryepicdude

  I'm trying to resize a video to match instagram's video format requirements. I'm using the ffmpeg_kit_flutter_full_gpl: ^5.1.0 package to do so and this is the function I'm calling :

  


  Future<void> resizeVideo(String input, String output) async {&#xA;&#xA;  final command = &#x27;-i $input -c:v libx264 -aspect 16:9 -crf 18 -vf "scale=iw*min(1280/iw\,720/ih):ih*min(1280/iw\,720/ih),pad=1280:720:(1280-iw)/2:(720-ih)/2" -fpsmax 60 -preset ultrafast -c:a aac -b:a 128k -ac 1 -use_editlist false -ar 48000 -pix_fmt yuv420p -movflags &#x2B;faststart -t 59 -y $output&#x27;;&#xA;  final session = await FFmpegKit.execute(command);&#xA;  print("resize done with ${await session.getReturnCode()}");&#xA;}&#xA;</void>

  


  However I get this error every time :

  


   Stream #0:0[0x1](und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 60 kb/s (default)
    Metadata:
      creation_time   : 2023-07-27T15:30:28.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Video: hevc (hvc1 / 0x31637668), yuv420p(tv, smpte170m/bt709/bt709), 720x1280, 2085 kb/s, 30 fps, 30 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2023-07-27T15:30:28.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:1 -> #0:0 (hevc (native) -> h264 (libx264))
  Stream #0:0 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[Parsed_scale_0 @ 0x2834a53f0] Invalid size 'iw*min(1280/iw'
[AVFilterGraph @ 0x28278e3a0] Error initializing filter 'scale'[AVFilterGraph @ 0x28278e3a0]  with args 'iw*min(1280/iw'[AVFilterGraph @ 0x28278e3a0] 
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:1
[aac @ 0x105334290] Qavg: 461.613
[aac @ 0x105334290] 2 frames left in the queue on closing


  


  Removing the scale filter makes the function work fine, but it fails the instagram video requirements listed here.
Any help will be greatly appreciated.