When I browse through recorded footage, either on the BI PC or on another
device (e.g. my Mac), I have the option to download clips either with or
without re-encoding to h.264. I obviously prefer to download without
re-encoding. I’ll call these the “original” downloads. Once downloaded they
behaved like normal MP4s on my Intel-based Mac. I could read them in QuickTime
Player or in any other app that uses the QuickTime libraries, like DaVinci
Resolve.
But last week I replaced my Intel Mac with an Apple Silicon Mac, and now these
MP4 files are broken. They will not play back in QuickTime player, nor in the
apps that are based on QuickTime. Curiously, VLC Player on my AS Mac will play
the “bad” files back, but only after a few frames of what looks like gray snow.
If I turn off the Hardware acceleration in VLC Player, then it will play back
the bad files correctly from frame 1.
If I choose the option in Blue Iris or in the client viewer to re-encode the
video to H.264 before download, then the resulting files behave properly on any
computer I’ve tried, but I don’t want to have to wait for a re-encode every
time I download a clip, and the file bloat is 10x.
I ran the original file and the re-encoded file through ffprobe. Can anyone
decode what the error is, and what the Blue Iris developer can do to fix it?
Bad (original) file:
https://www.kan.org/download/BlueIris/TrailDown.20230203_042912-042924.495.mp4
Good (re-encoded) file:
https://www.kan.org/download/BlueIris/TrailDown.20230203_042912-042924.494.mp4
Console output from Bad (original) file:
ffprobe /Users/steven/Downloads/TrailDown.20230203_042912-042924.495.mp4
ffprobe version N-109745-g7d49fef8b4-tessus https://evermeet.cx/ffmpeg/
Copyright (c) 2007-2023 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.17)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg
--extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
--enable-libaom --enable-libass --enable-libbluray --enable-libdav1d
--enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame
--enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenh264 --enable-libopenjpeg --enable-libopus
--enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs
--enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi
--enable-version3 --pkg-config-flags=--static --disable-ffplay
libavutil 57. 44.100 / 57. 44.100
libavcodec 59. 61.100 / 59. 61.100
libavformat 59. 37.100 / 59. 37.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 56.100 / 8. 56.100
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
libpostproc 56. 7.100 / 56. 7.100
[h264 @ 0x7fd082805200] error while decoding MB 161 121, bytestream -5
[h264 @ 0x7fd082805200] concealing 50 DC, 50 AC, 50 MV errors in I frame
[h264 @ 0x7fd082805200] error while decoding MB 161 121, bytestream -6
[h264 @ 0x7fd082805200] concealing 50 DC, 50 AC, 50 MV errors in P frame
[h264 @ 0x7fd082805200] error while decoding MB 161 121, bytestream -5
[h264 @ 0x7fd082805200] concealing 50 DC, 50 AC, 50 MV errors in P frame
[h264 @ 0x7fd082805200] error while decoding MB 161 121, bytestream -5
[h264 @ 0x7fd082805200] concealing 50 DC, 50 AC, 50 MV errors in P frame
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/Users/steven/Downloads/TrailDown.20230203_042912-042924.495.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.45.100
Duration: 00:00:11.30, start: 0.000000, bitrate: 6417 kb/s
Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc,
bt709, progressive), 2592x1944, 6388 kb/s, 19.91 fps, 20.67 tbr, 90k tbn
(default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono,
fltp, 26 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Console output from Good (re-encoded) file:
/Applications/ffmpeg/ffprobe
/Users/steven/Downloads/TrailDown.20230203_042912-042924.494.mp4
ffprobe version N-109745-g7d49fef8b4-tessus https://evermeet.cx/ffmpeg/
Copyright (c) 2007-2023 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.17)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg
--extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
--enable-libaom --enable-libass --enable-libbluray --enable-libdav1d
--enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame
--enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenh264 --enable-libopenjpeg --enable-libopus
--enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs
--enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi
--enable-version3 --pkg-config-flags=--static --disable-ffplay
libavutil 57. 44.100 / 57. 44.100
libavcodec 59. 61.100 / 59. 61.100
libavformat 59. 37.100 / 59. 37.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 56.100 / 8. 56.100
libswscale 6. 8.112 / 6. 8.112
libswresample 4. 9.100 / 4. 9.100
libpostproc 56. 7.100 / 56. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/Users/steven/Downloads/TrailDown.20230203_042912-042924.494.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.45.100
Duration: 00:00:12.09, start: 0.000000, bitrate: 37956 kb/s
Stream #0:0[0x1](und): Video: h264 (Constrained Baseline) (avc1 /
0x31637661), yuv420p(progressive), 2592x1952, 37926 kb/s, 19.94 fps, 20.42 tbr,
90k tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono,
fltp, 27 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
