GoPro video from bike crash - wont play in VLC

[Canzer]

hi.

I got a video from a bike crash where I really want to see what happend.. issue is it doesnt seem to want to start the stream of video/sound.

I have tried to start it in different players etc. but nothing works. File is about 2.8GB in size on the SD card / hdd

A guy on a differnt forum gave me this string to try and run

F:\ffmpeg-20160219-git-98a0053-win64-shared\ffmpeg-20160219-git-98a0053-win64-sh ared\bin>ffmpeg.exe -i "F:\GOPR9518.MP4" -map 0:a -map 0:v -c:v libx264 -crf 20 -crf_max 35 -c:a copy "F:\video1.mp4"

it returns:

F:\ffmpeg-20160219-git-98a0053-win64-shared\ffmpeg-20160219-git-98a0053-win64-shared\bin>ffmpeg.exe -i "F:\GOPR9518.MP4" -map 0:a -map 0:v -c:v libx26
4 -crf 20 -crf_max 35 -c:a copy "F:\video1.mp4"
ffmpeg version N-78598-g98a0053 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.0 (GCC)
configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontco
nfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-l
ibfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-am
rwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-lib
twolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 18.100 / 55. 18.100
libavcodec 57. 24.103 / 57. 24.103
libavformat 57. 25.101 / 57. 25.101
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 34.100 / 6. 34.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[h264 @ 00000000004cd420] SEI type 116 size 968 truncated at 228
[h264 @ 00000000004cd420] AVC: nal size 1836019574
[h264 @ 00000000004cd420] no frame!
[aac @ 0000000000512300] Reserved bit set.
[aac @ 0000000000512300] Number of bands (51) exceeds limit (30).
[h264 @ 00000000004cd420] AVC: nal size 1090519041
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 22347776
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 19005440
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1668433376
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1101780560
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1923188405
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 0
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 149764337
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -401606098
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -487848812
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -929639008
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -11251481
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 702023539
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -232927378
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1322882115
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1912976483
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -408874019
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1420076216
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1606604119
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -701765785
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -352635780
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1094746531
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -327186732
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1855620335
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1059560876
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1863743193
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1380709916
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 780380465
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -757022112
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -387518653
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1214262015
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 2145849929
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1019525233
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1016943579
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 971468429
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1210041895
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 685374874
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1466520510
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -232311309
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 152458562
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 589265199
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1734731653
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -652765298
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1192649802
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1257106532
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1445166232
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1999307337
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -547839874
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -555038200
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size 1112015888
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -1230735298
[h264 @ 00000000004cd420] no frame!
[h264 @ 00000000004cd420] AVC: nal size -37878903
[h264 @ 00000000004cd420] no frame!
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000004bc260] decoding for stream 0 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000004bc260] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none(bt709), 1920x1080, 19
872 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'F:\GOPR9518.MP4':
Metadata:
major_brand : avc1
minor_version : 0
compatible_brands: avc1isom
creation_time : 2016-02-14 07:36:55
Duration: 00:19:21.19, start: 0.000000, bitrate: 20008 kb/s
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none(bt709), 1920x1080, 19872 kb/s, 29.97 fps, 29.97 tbr, 180k tbn, 360k tbc (default)
Metadata:
creation_time : 2016-02-14 07:36:55
handler_name : GoPro AVC
encoder : GoPro AVC encoder
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2016-02-14 07:36:55
handler_name : GoPro AAC
File 'F:\video1.mp4' already exists. Overwrite ? [y/N] y
[buffer @ 00000000004beb20] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 00000000004beb20] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:0 @ 00000000004bb080] Error applying options to the filter.
Error opening filters!





Im at a longshot here. Anyone got any clues on what might be happening? - never had much experience with ffmpeg

[LigH.de]

Sounds like a tough issue. You may have a data error in the video stream shortly after the beginning of the original MP4 file. It's even interesting that the attributes of the video stream have been found, so there must be at least a "header" describing the content; but the content seems to be broken.

Your only hope is possibly that the decoder can find a later sync point where the video stream is correct again, but you may have to help ffmpeg here by enlarging the scanning duration. But here ends my knowledge. You could try adding useful values according to the error message you can read in the log:

Consider increasing the value for the 'analyzeduration' and 'probesize' options

If ffmpeg is unable to work with this apparently broken MP4, then it may help to combine your efforts with different tools, e.g. first trying to remultiplex it to MKV with mkvtoolnix and hope that it scans better for readable video stream parts...

[Baldrick]

You could try recover_mp4_to_h264 or/and graus video repair tool and see if they can fix anything.

[Canzer]

Baldrick - https://www.videohelp.com/software/Video-Repair-Tool worked!! thank you so much

[Baldrick]

Great!