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-
Can't convert .ts files that downloaded from .m3u8 file to mp4
23 juin 2023, par smartnimaI Have This Files :


001.ts 014.ts 027.ts 040.ts 053.ts 066.ts 079.ts 092.ts 105.ts 118.ts 131.ts 144.ts 157.ts 170.ts 183.ts 196.ts 209.ts 222.ts 235.ts 248.ts 261.ts 274.ts 287.ts 300.ts 313.ts 326.ts
002.ts 015.ts 028.ts 041.ts 054.ts 067.ts 080.ts 093.ts 106.ts 119.ts 132.ts 145.ts 158.ts 171.ts 184.ts 197.ts 210.ts 223.ts 236.ts 249.ts 262.ts 275.ts 288.ts 301.ts 314.ts 327.ts
003.ts 016.ts 029.ts 042.ts 055.ts 068.ts 081.ts 094.ts 107.ts 120.ts 133.ts 146.ts 159.ts 172.ts 185.ts 198.ts 211.ts 224.ts 237.ts 250.ts 263.ts 276.ts 289.ts 302.ts 315.ts 328.ts
004.ts 017.ts 030.ts 043.ts 056.ts 069.ts 082.ts 095.ts 108.ts 121.ts 134.ts 147.ts 160.ts 173.ts 186.ts 199.ts 212.ts 225.ts 238.ts 251.ts 264.ts 277.ts 290.ts 303.ts 316.ts 329.ts
005.ts 018.ts 031.ts 044.ts 057.ts 070.ts 083.ts 096.ts 109.ts 122.ts 135.ts 148.ts 161.ts 174.ts 187.ts 200.ts 213.ts 226.ts 239.ts 252.ts 265.ts 278.ts 291.ts 304.ts 317.ts 330.ts
006.ts 019.ts 032.ts 045.ts 058.ts 071.ts 084.ts 097.ts 110.ts 123.ts 136.ts 149.ts 162.ts 175.ts 188.ts 201.ts 214.ts 227.ts 240.ts 253.ts 266.ts 279.ts 292.ts 305.ts 318.ts 331.ts
007.ts 020.ts 033.ts 046.ts 059.ts 072.ts 085.ts 098.ts 111.ts 124.ts 137.ts 150.ts 163.ts 176.ts 189.ts 202.ts 215.ts 228.ts 241.ts 254.ts 267.ts 280.ts 293.ts 306.ts 319.ts 332.ts
008.ts 021.ts 034.ts 047.ts 060.ts 073.ts 086.ts 099.ts 112.ts 125.ts 138.ts 151.ts 164.ts 177.ts 190.ts 203.ts 216.ts 229.ts 242.ts 255.ts 268.ts 281.ts 294.ts 307.ts 320.ts 333.ts
009.ts 022.ts 035.ts 048.ts 061.ts 074.ts 087.ts 100.ts 113.ts 126.ts 139.ts 152.ts 165.ts 178.ts 191.ts 204.ts 217.ts 230.ts 243.ts 256.ts 269.ts 282.ts 295.ts 308.ts 321.ts 334.ts
010.ts 023.ts 036.ts 049.ts 062.ts 075.ts 088.ts 101.ts 114.ts 127.ts 140.ts 153.ts 166.ts 179.ts 192.ts 205.ts 218.ts 231.ts 244.ts 257.ts 270.ts 283.ts 296.ts 309.ts 322.ts
011.ts 024.ts 037.ts 050.ts 063.ts 076.ts 089.ts 102.ts 115.ts 128.ts 141.ts 154.ts 167.ts 180.ts 193.ts 206.ts 219.ts 232.ts 245.ts 258.ts 271.ts 284.ts 297.ts 310.ts 323.ts
012.ts 025.ts 038.ts 051.ts 064.ts 077.ts 090.ts 103.ts 116.ts 129.ts 142.ts 155.ts 168.ts 181.ts 194.ts 207.ts 220.ts 233.ts 246.ts 259.ts 272.ts 285.ts 298.ts 311.ts 324.ts
013.ts 026.ts 039.ts 052.ts 065.ts 078.ts 091.ts 104.ts 117.ts 130.ts 143.ts 156.ts 169.ts 182.ts 195.ts 208.ts 221.ts 234.ts 247.ts 260.ts 273.ts 286.ts 299.ts 312.ts 325.ts


That I Downloaded With This Python Program (m3u8 File Does Not Work !) :


import requests
import shutil
import os
import subprocess


def strip_end(text, suffix):
 if not text.endswith(suffix):
 return text
 return text[:len(text)-len(suffix)]


def download_file(url):
 cwd = os.getcwd()
 command = f"wget -O {cwd}/ts_files/{url.split('/')[-1]} {url}"
 subprocess.call(command, shell=True)


base_url = "https://stream.example.com/video/2021/example/720p_{}.ts"

if not os.path.exists('ts_files'):
 print('ts_file folder is not found, creating the folder.')
 os.makedirs('ts_files')

i = 1
while True:
 if len(str(i)) == 1:
 num = f"00{i}"
 elif len(str(i)) == 2:
 num = f"0{i}"
 else:
 num = str(i)
 url = base_url.replace("{}", num)
 r = requests.get(url, stream=True)
 print(f'downloading {i}')
 if r.status_code != 404:
 download_file(url) # comment out this line to download ts files.
 else:
 print("404")
 break
 i = i+1

cwd = os.getcwd() # Get the current working directory (cwd)
TS_DIR = 'ts_files'
with open('merged.ts', 'wb') as merged:
 for ts_file in os.listdir(f'{cwd}/{TS_DIR}'):
 with open(f'{cwd}/{TS_DIR}/{ts_file}', 'rb') as mergefile:
 shutil.copyfileobj(mergefile, merged)



My Problem Is When I Want To Convert All This Files To One .ts File And Then An MP4 File With ffmpeg, I Get An Error :


nima@funlife:~/ts_files$ cat ./*.ts > all.ts
nima@funlife:~/ts_files$ ffmpeg -i all.ts -acodec copy -vcodec copy all.mp4
ffmpeg version 5.0.1-3+b1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 11 (Debian 11.3.0-4)
 configuration: --prefix=/usr --extra-version=3+b1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --disable-sndio --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libplacebo --enable-libx264 --enable-shared
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100
all.ts: Invalid data found when processing input


.ts Files Content Is Like This :


}��,.g���}��
 �����c����Ww�c���c���eo��m�����ŧ� 䱉
�b(+��D�FG�zPe��7�&#bz�1ɶ��� C
�`,��>Ϲc4J��̀��T�I}�"��ކ�R�1��w͋� "� <�#B`ƪ�̸�co
 �9���+��W�
P���N���w��T\5g��
\�E�N�E�v��͑4f��U�@]�ΩX�U�x�E��bwm=ְ�iA�����p���M�����\=�_�I3C�hL�h����0)�ο��*��`���eZ� �ؗ4To�0V��S,�+�>�8_]�W�lNJD�|7e�2s�1X)̃5�0h�������~8ߩg���?e��EK�>۷�L
 ��:6|������>\ �N�WW��,�w
bk��1?*��/��/�5��k����~�� Lޕ}�a���2�{��l��$�d=����g�{a2��L�����
 jҫַ��ʿ�"1`ZZ.he)�=�x��E_4:Vg�����H=���x1�����}��W::y�


Are They Encrypted Or Something ?
I'm Trying To Do This Works With Debian 11.3.0-4, Python 3.10.5


Edit : Thanks Johnny, I Saw This Post : How to concatenate two MP4 files using FFmpeg ?
I Tried But I Get An Error Again !


nima@funlife:~/ts_files$ ffmpeg -f concat -i file.txt -c copy output.ts
ffmpeg version 5.0.1-3+b1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 11 (Debian 11.3.0-4)
 configuration: --prefix=/usr --extra-version=3+b1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --disable-sndio --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libplacebo --enable-libx264 --enable-shared
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100
[concat @ 0x55932dbf2500] Impossible to open '001.ts'
file.txt: Invalid data found when processing input


Same Error With ffmpeg -f concat -safe 0 -i file.txt -c copy output.ts


file.txt is The List Of Files !


-
How to fix laggy ffmpeg screen and audio capture ?
26 juillet 2022, par Wh0r00tI am using
ffmpegto capture the screen along with audio.

The
ffmpegcommand that i tried is

ffmpeg -y \
 -f x11grab \
 -framerate 60 \
 -s 1366x768 \
 -i :0.0 \
 -f alsa -i default -ac 2 \
 -r 30 \
 -c:v h264 -crf 0 -preset ultrafast -c:a vorbis -strict experimental \
 "$HOME/Videos/$fname-$(date '+%y%m%d-%H%M-%S').mkv"


The stdout of the
ffmpeghttps://pastebin.com/Qmi5TMKv

ffmpeg version n5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 12.1.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc --enable-shared --enable-version3
 libavutil 57. 17.100 / 57. 17.100
 libavcodec 59. 18.100 / 59. 18.100
 libavformat 59. 16.100 / 59. 16.100
 libavdevice 59. 4.100 / 59. 4.100
 libavfilter 8. 24.100 / 8. 24.100
 libswscale 6. 4.100 / 6. 4.100
 libswresample 4. 3.100 / 4. 3.100
 libpostproc 56. 3.100 / 56. 3.100
[x11grab @ 0x561faf77eb00] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':0.0':
 Duration: N/A, start: 1658814267.169414, bitrate: 2014248 kb/s
 Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1366x768, 2014248 kb/s, 60 fps, 1000k tbr, 1000k tbn
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, alsa, from 'default':
 Duration: N/A, start: 1658814267.230653, bitrate: 1536 kb/s
 Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> vorbis (native))
Press [q] to stop, [?] for help
[libx264 @ 0x561faf7d4300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA3 BMI1
[libx264 @ 0x561faf7d4300] profile High 4:4:4 Predictive, level 3.2, 4:4:4, 8-bit
[libx264 @ 0x561faf7d4300] 264 - core 164 r3081 19856cc - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=cqp mbtree=0 qp=0
[alsa @ 0x561faf78a940] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
Output #0, matroska, to '/home/earth/Videos/-220726-1114-27.mkv':
 Metadata:
 encoder : Lavf59.16.100
 Stream #0:0: Video: h264 (H264 / 0x34363248), yuv444p(tv, progressive), 1366x768, q=2-31, 30 fps, 1k tbn
 Metadata:
 encoder : Lavc59.18.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1: Audio: vorbis (oV[0][0] / 0x566F), 48000 Hz, stereo, fltp
 Metadata:
 encoder : Lavc59.18.100 vorbis
[vorbis @ 0x561faf7d5500] Queue input is backward in time0 bitrate=N/A speed= 0x
frame= 153 fps= 31 q=-1.0 Lsize= 2295kB time=00:00:05.06 bitrate=3709.5kbits/s dup=0 drop=150 speed=1.01x
video:2282kB audio:7kB subtitle:0kB other streams:0kB global headers:3kB muxing overhead: 0.281689%
[libx264 @ 0x561faf7d4300] frame I:1 Avg QP: 0.00 size:381729
[libx264 @ 0x561faf7d4300] frame P:152 Avg QP: 0.00 size: 12857
[libx264 @ 0x561faf7d4300] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x561faf7d4300] mb P I16..4: 56.3% 0.0% 0.0% P16..4: 0.1% 0.0% 0.0% 0.0% 0.0% skip:43.6%
[libx264 @ 0x561faf7d4300] coded y,u,v intra: 1.6% 1.6% 1.6% inter: 0.2% 0.2% 0.2%
[libx264 @ 0x561faf7d4300] i16 v,h,dc,p: 99% 1% 0% 0%
[libx264 @ 0x561faf7d4300] kb/s:3664.27
Exiting normally, received signal 15.


I am using the preset ultrafast because I read that it helps not to compress the video too much.
The output of the recorded test file using ffmpeg is as below.


(+) Video --vid=1 (h264 1366x768 30.000fps)
 (+) Audio --aid=1 (vorbis 2ch 48000Hz)
AO: [pulse] 48000Hz stereo 2ch float
VO: [gpu] 1366x768 yuv444p
AV: 00:00:03 / 00:00:19 (17%) A-V: 0.000
[mkv] Discarding potentially broken or useless index.
AV: 00:00:14 / 00:00:19 (73%) A-V: 0.000

Exiting... (Quit)


The recording works but there is a audio lag. If I record the same using
simplescreenrecorderwith the same settings like,

audio backend - alsa


source - default


audio codec - vorbis


video codec - h.264


container - matroska


preset - superfast


The
simplescreenrecorderlog https://pastebin.com/83hMMRQF

[PageRecord::StartPage] Starting page ...
[PageRecord::StartPage] Started page.
[PageRecord::StartOutput] Starting output ...
[PageRecord::StartOutput] Output file: /home/earth/Videos/simplescreenrecorder-2022-07-26_11.18.13.mkv
[Muxer::Init] Using format matroska (Matroska).
[Muxer::AddStream] Using codec libx264 (libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10).
[VideoEncoder::PrepareStream] Using pixel format nv12.
[libx264 @ 0x563436cbfd40] using SAR=1/1
[libx264 @ 0x563436cbfd40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA3 BMI1
[libx264 @ 0x563436cbfd40] profile High, level 3.2, 4:2:0, 8-bit
[libx264 @ 0x563436cbfd40] 264 - core 164 r3081 19856cc - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x3 me=dia subme=1 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 pb_ratio=1.30 aq=1:1.00
[Muxer::AddStream] Using codec libvorbis (libvorbis).
[BaseEncoder::EncoderThread] Encoder thread started.
[AudioEncoder::PrepareStream] Using sample format f32p.
[BaseEncoder::EncoderThread] Encoder thread started.
[Muxer::MuxerThread] Muxer thread started.
[PageRecord::StartOutput] Started output.
[Synchronizer::SynchronizerThread] Synchronizer thread started.
[PageRecord::StartInput] Starting input ...
[X11Input::Init] Using X11 shared memory.
[X11Input::Init] Detecting screen configuration ...
[X11Input::Init] Screen 0: x1 = 0, y1 = 0, x2 = 1366, y2 = 768
[X11Input::InputThread] Input thread started.
[ALSAInput::InputThread] Using sample format s16.
[PageRecord::StartInput] Started input.
[ALSAInput::InputThread] Input thread started.
[FastResampler::Resample] Resample ratio is 1.0000 (was 0.0000).
[PageRecord::StopOutput] Stopping output ...
[PageRecord::StopOutput] Stopped output.
[PageRecord::StopInput] Stopping input ...
[X11Input::~X11Input] Stopping input thread ...
[X11Input::InputThread] Input thread stopped.
[ALSAInput::~ALSAInput] Stopping input thread ...
[ALSAInput::InputThread] Input thread stopped.
[PageRecord::StopInput] Stopped input.


It works perfectly without any lag whatsoever. The output of the recorded test file using simplescreenrecorder is as below.


(+) Video --vid=1 (h264 1366x768)
 (+) Audio --aid=1 (vorbis 2ch 48000Hz)
AO: [pulse] 48000Hz stereo 2ch float
VO: [gpu] 1366x768 yuv420p
AV: 00:00:01 / 00:00:17 (7%) A-V: 0.000
[mkv] Discarding potentially broken or useless index.
AV: 00:00:08 / 00:00:17 (47%) A-V: 0.000

Exiting... (Quit)


The only difference that I saw between these two recordings is
VO: [gpu] 1366x768 yuv444p
VO: [gpu] 1366x768 yuv420pfor ffmpeg and simplescreenrecorder receptively.
I do not know if this matters but is there something that I could tweak to makeffmpegto capture the screen and audio without any lag.
Like answered here https://unix.stackexchange.com/questions/675436/ffmpeg-recording-slows-down-when-audio-inputs-are-added
I do open pavucontrol but its not much of a help.

The reason that I going with
ffmpegis because I can kill the process usingpidat a particular time using cronjobs.
These are my system information, in case if it helps

System:
 Host: taco Kernel: 5.18.12-arch1-1 arch: x86_64 bits: 64 Desktop: dwm
 v: 6.2 Distro: Arch Linux
Machine:
 Type: Desktop Mobo: Acer model: A75F2-M v: P21-A1 serial: N/A BIOS: Acer
 v: P21-A1 date: 02/07/2014
CPU:
 Info: quad core model: AMD A8-5500B APU with Radeon HD Graphics bits: 64
 type: MT MCP cache: L2: 4 MiB
 Speed (MHz): avg: 1400 min/max: 1400/3200 cores: 1: 1400 2: 1400 3: 1400
 4: 1400
Graphics:
 Device-1: AMD Trinity [Radeon HD 7560D] driver: radeon v: kernel
 Display: server: X.Org v: 21.1.4 driver: X: loaded: modesetting
 gpu: radeon resolution: 1366x768~60Hz
 OpenGL: renderer: AMD ARUBA (DRM 2.50.0 / 5.18.12-arch1-1 LLVM 14.0.6)
 v: 4.3 Mesa 22.1.3
Audio:
 Device-1: AMD FCH Azalia driver: snd_hda_intel
 Sound Server-1: ALSA v: k5.18.12-arch1-1 running: yes
 Sound Server-2: PulseAudio v: 16.1 running: yes
 Sound Server-3: PipeWire v: 0.3.56 running: yes


Any help is much appreciated.


-
Metadict in ffmpeg does not have rotate information
14 juillet 2022, par Lucky SundaMy aim is to extract frames out of a video but many times the frames are inverted. This is happening because "VideoCapture" in cv2 does read the rotate flag data present in the video metadata. I am running it on mac and installed "ffmpeg" package (5.0.1) using brew package manager. This is my code to check rotation present in a video using ffmpeg.


import ffmpeg 
import cv2 
import pprint 
pp = pprint.PrettyPrinter(depth=4)
def check_rotation(path_video_file):
 # this returns meta-data of the video file in form of a dictionary
 meta_dict = ffmpeg.probe(path_video_file)
 pp.pprint(meta_dict)

 # from the dictionary, meta_dict['streams'][0]['tags']['rotate'] is the key
 # we are looking for
 rotateCode = None
 if int(meta_dict['streams'][0]['tags']['rotate']) == 90:
 rotateCode = cv2.ROTATE_90_CLOCKWISE
 elif int(meta_dict['streams'][0]['tags']['rotate']) == 180:
 rotateCode = cv2.ROTATE_180
 elif int(meta_dict['streams'][0]['tags']['rotate']) == 270:
 rotateCode = cv2.ROTATE_90_COUNTERCLOCKWISE

 return rotateCode



Here the meta_dict is supposed to have information about the rotation but it is not there.
printing out meta_dict gives :


{'format': {'bit_rate': '18498544',
 'duration': '3.584000',
 'filename': 'video.mp4',
 'format_long_name': 'QuickTime / MOV',
 'format_name': 'mov,mp4,m4a,3gp,3g2,mj2',
 'nb_programs': 0,
 'nb_streams': 2,
 'probe_score': 100,
 'size': '8287348',
 'start_time': '0.000000',
 'tags': {'com.android.version': '11',
 'compatible_brands': 'isommp42',
 'creation_time': '2021-12-08T10:56:57.000000Z',
 'major_brand': 'mp42',
 'minor_version': '0'}},
 'streams': [{'avg_frame_rate': '990000/34997',
 'bit_rate': '18804651',
 'bits_per_raw_sample': '8',
 'chroma_location': 'left',
 'closed_captions': 0,
 'codec_long_name': 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10',
 'codec_name': 'h264',
 'codec_tag': '0x31637661',
 'codec_tag_string': 'avc1',
 'codec_type': 'video',
 'coded_height': 1080,
 'coded_width': 1920,
 'color_primaries': 'bt470bg',
 'color_range': 'pc',
 'color_space': 'bt470bg',
 'color_transfer': 'smpte170m',
 'display_aspect_ratio': '16:9',
 'disposition': {'attached_pic': 0,
 'captions': 0,
 'clean_effects': 0,
 'comment': 0,
 'default': 1,
 'dependent': 0,
 'descriptions': 0,
 'dub': 0,
 'forced': 0,
 'hearing_impaired': 0,
 'karaoke': 0,
 'lyrics': 0,
 'metadata': 0,
 'original': 0,
 'still_image': 0,
 'timed_thumbnails': 0,
 'visual_impaired': 0},
 'duration': '3.499700',
 'duration_ts': 314973,
 'extradata_size': 35,
 'field_order': 'progressive',
 'film_grain': 0,
 'has_b_frames': 0,
 'height': 1080,
 'id': '0x1',
 'index': 0,
 'is_avc': 'true',
 'level': 40,
 'nal_length_size': '4',
 'nb_frames': '99',
 'pix_fmt': 'yuvj420p',
 'profile': 'High',
 'r_frame_rate': '120/1',
 'refs': 1,
 'sample_aspect_ratio': '1:1',
 'side_data_list': [{...}],
 'start_pts': 3168,
 'start_time': '0.035200',
 'tags': {'creation_time': '2021-12-08T10:56:57.000000Z',
 'handler_name': 'VideoHandle',
 'language': 'eng',
 'vendor_id': '[0][0][0][0]'},
 'time_base': '1/90000',
 'width': 1920},
 {'avg_frame_rate': '0/0',
 'bit_rate': '128986',
 'bits_per_sample': 0,
 'channel_layout': 'stereo',
 'channels': 2,
 'codec_long_name': 'AAC (Advanced Audio Coding)',
 'codec_name': 'aac',
 'codec_tag': '0x6134706d',
 'codec_tag_string': 'mp4a',
 'codec_type': 'audio',
 'disposition': {'attached_pic': 0,
 'captions': 0,
 'clean_effects': 0,
 'comment': 0,
 'default': 1,
 'dependent': 0,
 'descriptions': 0,
 'dub': 0,
 'forced': 0,
 'hearing_impaired': 0,
 'karaoke': 0,
 'lyrics': 0,
 'metadata': 0,
 'original': 0,
 'still_image': 0,
 'timed_thumbnails': 0,
 'visual_impaired': 0},
 'duration': '3.584000',
 'duration_ts': 172032,
 'extradata_size': 2,
 'id': '0x2',
 'index': 1,
 'nb_frames': '168',
 'profile': 'LC',
 'r_frame_rate': '0/0',
 'sample_fmt': 'fltp',
 'sample_rate': '48000',
 'start_pts': 0,
 'start_time': '0.000000',
 'tags': {'creation_time': '2021-12-08T10:56:57.000000Z',
 'handler_name': 'SoundHandle',
 'language': 'eng',
 'vendor_id': '[0][0][0][0]'},
 'time_base': '1/48000'}]}


Can someone please help me to find if rotation is present in a video ?


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