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Médias (1)
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SPIP - plugins - embed code - Exemple
2 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
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Sur d’autres sites (8002)
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How to copy ffprobe dumped metadata to a converted video
23 mai 2020, par QuerI hope you're all doing safe ! I'm using windows 10 and have lots of home videos, some of them are on
.AVIformat. I just discovered google photos don't backup.AVIvideos, I tried converting it with GUI converters (FormatFactory, Wondershare, HandBrake) but when I tried to back it up, it wasn't preserving the metadata of my newly converted videos.


I tried further research on this matter and I stumble upon ffmpeg (w/c the GUIs were using). I successfully converted
.MOVwhile preserving metadata using :


ffmpeg -i in.MOV -b:v 73000k -c:v libx264 -c:a aac -strict -2 -map_metadata 0 out.mp4



but when I tried converting
.AVIvideos, with the command above, it doesn't retain the original metadata for theout.mp4.


I tried another approach and I found out a method of dumping the metadata on a
.txtthen restoring it on theout.mp4.


ffprobe -v error -show_format -show_streams DSCF0421.AVI > output.txt 2>&1



The command above does save it on the
output.txt


output.txt


[STREAM]
index=0
codec_name=mjpeg
codec_long_name=Motion JPEG
profile=Baseline
codec_type=video
codec_time_base=33333/1000000
codec_tag_string=MJPG
codec_tag=0x47504a4d
width=640
height=480
coded_width=640
coded_height=480
closed_captions=0
has_b_frames=0
sample_aspect_ratio=N/A
display_aspect_ratio=N/A
pix_fmt=yuvj422p
level=-99
color_range=pc
color_space=bt470bg
color_transfer=unknown
color_primaries=unknown
chroma_location=center
field_order=unknown
timecode=N/A
refs=1
id=N/A
r_frame_rate=1000000/33333
avg_frame_rate=1000000/33333
time_base=33333/1000000
start_pts=0
start_time=0.000000
duration_ts=150
duration=4.999950
bit_rate=9739922
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=150
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:Make=FUJIFILM
TAG:Model=FinePix JX550
TAG:DateTime=2012:05:20 00:25:48
TAG:JPEGInterchangeFormat= 658
TAG:JPEGInterchangeFormatLength= 2698
TAG:Copyright= 
TAG:DateTimeOriginal=2012:05:20 00:25:48
TAG:DateTimeDigitized=2012:05:20 00:25:48
TAG:MakerNote=
 uwu
TAG:title=FUJIFILM AVI STREAM 0100
[/STREAM]
[STREAM]
index=1
codec_name=pcm_u8
codec_long_name=PCM unsigned 8-bit
profile=unknown
codec_type=audio
codec_time_base=1/11024
codec_tag_string=[1][0][0][0]
codec_tag=0x0001
sample_fmt=u8
sample_rate=11024
channels=1
channel_layout=unknown
bits_per_sample=8
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/11024
start_pts=0
start_time=0.000000
duration_ts=N/A
duration=N/A
bit_rate=88192
max_bit_rate=N/A
bits_per_raw_sample=N/A
nb_frames=55120
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
[/STREAM]
[FORMAT]
filename=DSCF0421.AVI
nb_streams=2
nb_programs=0
format_name=avi
format_long_name=AVI (Audio Video Interleaved)
start_time=0.000000
duration=4.999950
size=6111800
bit_rate=9778977
probe_score=100
[/FORMAT]



Then I tried restoring it with either
.mp4or.mkv


MP4

ffmpeg -i DSCF0421.AVI -i output.txt compressed.mp4

MKV

ffmpeg -i DSCF0421.AVI -i output.txt compressed.mkv



result of the command above :



MP4



C:\Users\PandaLabs\Desktop\Conversion underground>ffmpeg -i DSCF0421.AVI -i output.txt compressed.mp4
ffmpeg version git-2020-05-22-38490cb Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 9.3.1 (GCC) 20200513
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
 libavutil 56. 46.100 / 56. 46.100
 libavcodec 58. 86.101 / 58. 86.101
 libavformat 58. 43.100 / 58. 43.100
 libavdevice 58. 9.103 / 58. 9.103
 libavfilter 7. 82.100 / 7. 82.100
 libswscale 5. 6.101 / 5. 6.101
 libswresample 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'DSCF0421.AVI':
 Duration: 00:00:05.00, start: 0.000000, bitrate: 9778 kb/s
 Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 9739 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
 Metadata:
 Make : FUJIFILM
 Model : FinePix JX550
 DateTime : 2012:05:20 00:25:48
 JPEGInterchangeFormat: 658
 JPEGInterchangeFormatLength: 2698
 Copyright :
 DateTimeOriginal: 2012:05:20 00:25:48
 DateTimeDigitized: 2012:05:20 00:25:48
 MakerNote :
 : 70, 85, 74, 73, 70, 73, 76, 77, 12, 0, 0, 0, 18, 0, 0, 0
 : 7, 0, 4, 0, 0, 0, 48, 49, 51, 48, 16, 0, 2, 0, 33, 0
 : 0, 0, 2, 1, 0, 0, 0, 16, 2, 0, 8, 0, 0, 0, 35, 1
 : 0, 0, 1, 16, 3, 0, 1, 0, 0, 0, 3, 0, 0, 0, 2, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 16, 16, 3, 0, 1, 0
 : 0, 0, 2, 0, 0, 0, 17, 16, 10, 0, 1, 0, 0, 0, 43, 1
 : 0, 0, 32, 16, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 33, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 16, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 49, 16, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 0, 17, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 18
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 19, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 1, 19, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 2, 19, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 20
 : 7, 0, 129, 0, 0, 0, 52, 1, 0, 0, 49, 20, 4, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 53, 57, 50, 68, 51, 49, 51, 49, 51, 57, 51, 54, 51, 49
 : 49, 50, 48, 51, 49, 56, 70, 70, 69, 53, 50, 83, 80, 48, 52, 54
 : 50, 54, 0, 78, 79, 82, 77, 65, 76, 32, 0, 0, 0, 0, 0, 100
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0
 title : FUJIFILM AVI STREAM 0100
 Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 11024 Hz, mono, u8, 88 kb/s
Input #1, tty, from 'output.txt':
 Duration: 00:00:00.80, start: 0.000000, bitrate: 46 kb/s
 Stream #1:0: Video: ansi, pal8, 640x400, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
 Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
 Stream #0:1 -> #0:1 (pcm_u8 (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0000017c4ae758c0] Too many bits 6408.707483 > 6144 per frame requested, clamping to max
[libx264 @ 0000017c4ae65440] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000017c4ae65440] profile High 4:2:2, level 3.0, 4:2:2, 8-bit
[libx264 @ 0000017c4ae65440] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 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=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'compressed.mp4':
 Metadata:
 encoder : Lavf58.43.100
 Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj422p(pc), 640x480, q=-1--1, 30 fps, 1000k tbn, 30 tbc
 Metadata:
 Make : FUJIFILM
 Model : FinePix JX550
 DateTime : 2012:05:20 00:25:48
 JPEGInterchangeFormat: 658
 JPEGInterchangeFormatLength: 2698
 Copyright :
 DateTimeOriginal: 2012:05:20 00:25:48
 DateTimeDigitized: 2012:05:20 00:25:48
 MakerNote :
 : 70, 85, 74, 73, 70, 73, 76, 77, 12, 0, 0, 0, 18, 0, 0, 0
 : 7, 0, 4, 0, 0, 0, 48, 49, 51, 48, 16, 0, 2, 0, 33, 0
 : 0, 0, 2, 1, 0, 0, 0, 16, 2, 0, 8, 0, 0, 0, 35, 1
 : 0, 0, 1, 16, 3, 0, 1, 0, 0, 0, 3, 0, 0, 0, 2, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 16, 16, 3, 0, 1, 0
 : 0, 0, 2, 0, 0, 0, 17, 16, 10, 0, 1, 0, 0, 0, 43, 1
 : 0, 0, 32, 16, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 33, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 16, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 49, 16, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 0, 17, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 18
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 19, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 1, 19, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 2, 19, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 20
 : 7, 0, 129, 0, 0, 0, 52, 1, 0, 0, 49, 20, 4, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 53, 57, 50, 68, 51, 49, 51, 49, 51, 57, 51, 54, 51, 49
 : 49, 50, 48, 51, 49, 56, 70, 70, 69, 53, 50, 83, 80, 48, 52, 54
 : 50, 54, 0, 78, 79, 82, 77, 65, 76, 32, 0, 0, 0, 0, 0, 100
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0
 title : FUJIFILM AVI STREAM 0100
 encoder : Lavc58.86.101 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 11025 Hz, mono, fltp, 66 kb/s
 Metadata:
 encoder : Lavc58.86.101 aac
[mjpeg @ 0000017c4ae70fc0] mjpeg_decode_dc: bad vlc: 0:0 (0000017c4ae71688)
[mjpeg @ 0000017c4ae70fc0] error dc
[mjpeg @ 0000017c4ae70fc0] error y=59 x=39
frame= 150 fps=104 q=-1.0 Lsize= 2327kB time=00:00:05.01 bitrate=3801.3kbits/s speed=3.49x
video:2290kB audio:33kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.175157%
[libx264 @ 0000017c4ae65440] frame I:2 Avg QP:25.35 size: 24876
[libx264 @ 0000017c4ae65440] frame P:38 Avg QP:26.87 size: 18472
[libx264 @ 0000017c4ae65440] frame B:110 Avg QP:27.42 size: 14477
[libx264 @ 0000017c4ae65440] consecutive B-frames: 1.3% 2.7% 0.0% 96.0%
[libx264 @ 0000017c4ae65440] mb I I16..4: 0.2% 98.9% 0.9%
[libx264 @ 0000017c4ae65440] mb P I16..4: 0.2% 54.8% 1.2% P16..4: 29.1% 11.2% 3.4% 0.0% 0.0% skip: 0.1%
[libx264 @ 0000017c4ae65440] mb B I16..4: 0.0% 22.9% 0.1% B16..8: 40.5% 14.0% 3.0% direct:15.2% skip: 4.3% L0:45.5% L1:42.5% BI:12.0%
[libx264 @ 0000017c4ae65440] 8x8 transform intra:98.6% inter:79.9%
[libx264 @ 0000017c4ae65440] coded y,uvDC,uvAC intra: 92.1% 99.0% 74.7% inter: 60.8% 91.7% 25.7%
[libx264 @ 0000017c4ae65440] i16 v,h,dc,p: 26% 7% 12% 55%
[libx264 @ 0000017c4ae65440] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 10% 40% 6% 6% 6% 5% 7% 8%
[libx264 @ 0000017c4ae65440] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 11% 19% 10% 9% 10% 6% 8% 5%
[libx264 @ 0000017c4ae65440] i8c dc,h,v,p: 65% 7% 23% 5%
[libx264 @ 0000017c4ae65440] Weighted P-Frames: Y:2.6% UV:2.6%
[libx264 @ 0000017c4ae65440] ref P L0: 41.3% 11.9% 27.9% 18.5% 0.4%
[libx264 @ 0000017c4ae65440] ref B L0: 75.4% 19.4% 5.2%
[libx264 @ 0000017c4ae65440] ref B L1: 89.4% 10.6%
[libx264 @ 0000017c4ae65440] kb/s:3750.61
[aac @ 0000017c4ae758c0] Qavg: 27095.141



MKV



C:\Users\PandaLabs\Desktop\Conversion underground>ffmpeg -i DSCF0421.AVI -i output.txt compressed.mkv
ffmpeg version git-2020-05-22-38490cb Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 9.3.1 (GCC) 20200513
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
 libavutil 56. 46.100 / 56. 46.100
 libavcodec 58. 86.101 / 58. 86.101
 libavformat 58. 43.100 / 58. 43.100
 libavdevice 58. 9.103 / 58. 9.103
 libavfilter 7. 82.100 / 7. 82.100
 libswscale 5. 6.101 / 5. 6.101
 libswresample 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'DSCF0421.AVI':
 Duration: 00:00:05.00, start: 0.000000, bitrate: 9778 kb/s
 Stream #0:0: Video: mjpeg (Baseline) (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 9739 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
 Metadata:
 Make : FUJIFILM
 Model : FinePix JX550
 DateTime : 2012:05:20 00:25:48
 JPEGInterchangeFormat: 658
 JPEGInterchangeFormatLength: 2698
 Copyright :
 DateTimeOriginal: 2012:05:20 00:25:48
 DateTimeDigitized: 2012:05:20 00:25:48
 MakerNote :
 : 70, 85, 74, 73, 70, 73, 76, 77, 12, 0, 0, 0, 18, 0, 0, 0
 : 7, 0, 4, 0, 0, 0, 48, 49, 51, 48, 16, 0, 2, 0, 33, 0
 : 0, 0, 2, 1, 0, 0, 0, 16, 2, 0, 8, 0, 0, 0, 35, 1
 : 0, 0, 1, 16, 3, 0, 1, 0, 0, 0, 3, 0, 0, 0, 2, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 16, 16, 3, 0, 1, 0
 : 0, 0, 2, 0, 0, 0, 17, 16, 10, 0, 1, 0, 0, 0, 43, 1
 : 0, 0, 32, 16, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 33, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 16, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 49, 16, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 0, 17, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 18
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 19, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 1, 19, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 2, 19, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 20
 : 7, 0, 129, 0, 0, 0, 52, 1, 0, 0, 49, 20, 4, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 53, 57, 50, 68, 51, 49, 51, 49, 51, 57, 51, 54, 51, 49
 : 49, 50, 48, 51, 49, 56, 70, 70, 69, 53, 50, 83, 80, 48, 52, 54
 : 50, 54, 0, 78, 79, 82, 77, 65, 76, 32, 0, 0, 0, 0, 0, 100
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0
 title : FUJIFILM AVI STREAM 0100
 Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 11024 Hz, mono, u8, 88 kb/s
Input #1, tty, from 'output.txt':
 Duration: 00:00:00.80, start: 0.000000, bitrate: 46 kb/s
 Stream #1:0: Video: ansi, pal8, 640x400, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
 Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
 Stream #0:1 -> #0:1 (pcm_u8 (native) -> vorbis (libvorbis))
Press [q] to stop, [?] for help
[libx264 @ 000002b3674f3f40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000002b3674f3f40] profile High 4:2:2, level 3.0, 4:2:2, 8-bit
[libx264 @ 000002b3674f3f40] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 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=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'compressed.mkv':
 Metadata:
 encoder : Lavf58.43.100
 Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuvj422p(pc), 640x480, q=-1--1, 30 fps, 1k tbn, 30 tbc
 Metadata:
 Make : FUJIFILM
 Model : FinePix JX550
 DateTime : 2012:05:20 00:25:48
 JPEGInterchangeFormat: 658
 JPEGInterchangeFormatLength: 2698
 Copyright :
 DateTimeOriginal: 2012:05:20 00:25:48
 DateTimeDigitized: 2012:05:20 00:25:48
 MakerNote :
 : 70, 85, 74, 73, 70, 73, 76, 77, 12, 0, 0, 0, 18, 0, 0, 0
 : 7, 0, 4, 0, 0, 0, 48, 49, 51, 48, 16, 0, 2, 0, 33, 0
 : 0, 0, 2, 1, 0, 0, 0, 16, 2, 0, 8, 0, 0, 0, 35, 1
 : 0, 0, 1, 16, 3, 0, 1, 0, 0, 0, 3, 0, 0, 0, 2, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 16, 16, 3, 0, 1, 0
 : 0, 0, 2, 0, 0, 0, 17, 16, 10, 0, 1, 0, 0, 0, 43, 1
 : 0, 0, 32, 16, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 33, 16
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 16, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 49, 16, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 0, 17, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 18
 : 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 19, 3, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 1, 19, 3, 0, 1, 0, 0, 0, 0, 0
 : 0, 0, 2, 19, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, 48, 20
 : 7, 0, 129, 0, 0, 0, 52, 1, 0, 0, 49, 20, 4, 0, 1, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 53, 57, 50, 68, 51, 49, 51, 49, 51, 57, 51, 54, 51, 49
 : 49, 50, 48, 51, 49, 56, 70, 70, 69, 53, 50, 83, 80, 48, 52, 54
 : 50, 54, 0, 78, 79, 82, 77, 65, 76, 32, 0, 0, 0, 0, 0, 100
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 : 0, 0, 0, 0, 0, 0
 title : FUJIFILM AVI STREAM 0100
 encoder : Lavc58.86.101 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 11024 Hz, mono, fltp
 Metadata:
 encoder : Lavc58.86.101 libvorbis
[mjpeg @ 000002b3674f0fc0] mjpeg_decode_dc: bad vlc: 0:0 (000002b3674f1688)
[mjpeg @ 000002b3674f0fc0] error dc
[mjpeg @ 000002b3674f0fc0] error y=59 x=39
frame= 150 fps= 95 q=-1.0 Lsize= 2317kB time=00:00:04.99 bitrate=3797.5kbits/s speed=3.16x
video:2290kB audio:19kB subtitle:0kB other streams:0kB global headers:3kB muxing overhead: 0.355840%
[libx264 @ 000002b3674f3f40] frame I:2 Avg QP:25.35 size: 24876
[libx264 @ 000002b3674f3f40] frame P:38 Avg QP:26.87 size: 18472
[libx264 @ 000002b3674f3f40] frame B:110 Avg QP:27.42 size: 14477
[libx264 @ 000002b3674f3f40] consecutive B-frames: 1.3% 2.7% 0.0% 96.0%
[libx264 @ 000002b3674f3f40] mb I I16..4: 0.2% 98.9% 0.9%
[libx264 @ 000002b3674f3f40] mb P I16..4: 0.2% 54.8% 1.2% P16..4: 29.1% 11.2% 3.4% 0.0% 0.0% skip: 0.1%
[libx264 @ 000002b3674f3f40] mb B I16..4: 0.0% 22.9% 0.1% B16..8: 40.5% 14.0% 3.0% direct:15.2% skip: 4.3% L0:45.5% L1:42.5% BI:12.0%
[libx264 @ 000002b3674f3f40] 8x8 transform intra:98.6% inter:79.9%
[libx264 @ 000002b3674f3f40] coded y,uvDC,uvAC intra: 92.1% 99.0% 74.7% inter: 60.8% 91.7% 25.7%
[libx264 @ 000002b3674f3f40] i16 v,h,dc,p: 26% 7% 12% 55%
[libx264 @ 000002b3674f3f40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 10% 40% 6% 6% 6% 5% 7% 8%
[libx264 @ 000002b3674f3f40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 11% 19% 10% 9% 10% 6% 8% 5%
[libx264 @ 000002b3674f3f40] i8c dc,h,v,p: 65% 7% 23% 5%
[libx264 @ 000002b3674f3f40] Weighted P-Frames: Y:2.6% UV:2.6%
[libx264 @ 000002b3674f3f40] ref P L0: 41.3% 11.9% 27.9% 18.5% 0.4%
[libx264 @ 000002b3674f3f40] ref B L0: 75.4% 19.4% 5.2%
[libx264 @ 000002b3674f3f40] ref B L1: 89.4% 10.6%
[libx264 @ 000002b3674f3f40] kb/s:3750.61



It doesn't successfully restore the metadata of the source
.AVI


BTW, I don't intend to shrink the size of the video I just need to retain its created date and some miscellaneous.



Thank you in advance for those who will answer !


-
Problem opening xvid264 with avcodec_alloc_context(NULL)
12 juillet 2024, par user3763774I want to multiplex audio and video together using the ffmpeg encoding library with xvid264rgb codec. I can open the codec when I create the context specifying that codec, but not if I use NULL for the argument with allocate context. My understanding is I need to use NULL so I can open the audio codec as well.


In the example, the first open works with codec indicated in the allocate context. The second doesn't.


#include 
#include 
#include 
#include <libavcodec></libavcodec>avcodec.h>
#include <libavutil></libavutil>opt.h>
#define WIDTH 400
#define HEIGHT 300

const AVCodec *videocodec;

bool init_video_encoder(AVCodecContext *c, int width, int height) {
 int ret;
 
 const AVRational tb_rat = {1, 30};
 const AVRational fr_rat = {30, 1};

 fprintf(stderr, "init video encoder\n");
 // video
 //fprintf(stderr, "speed= %d \n", videocodec->speed);
 c->bit_rate = 400000;
 c->width = width;
 c->height = height;
 c->time_base = tb_rat;
 c->framerate = fr_rat;
 c->gop_size = 10;
 c->max_b_frames = 1;
 c->pix_fmt = AV_PIX_FMT_RGB24;
 if( videocodec->id == AV_CODEC_ID_H264 ) 
 av_opt_set(c->priv_data, "preset", "slow", 0);
 
 ret = avcodec_open2(c, videocodec, NULL);
 if( ret < 0 ) {
 fprintf(stderr, "failure to open codec: %s\n", av_err2str(ret));
 return false;
 }
 //avcodec_free_context(&c);
 return true;
}

int main(int argc, char **argv) {

 AVCodecContext *context = NULL;

 videocodec = avcodec_find_encoder_by_name("libx264rgb");
 if( videocodec == NULL ) {
 fprintf(stderr, "video encoder 'libx264rgb' not found");
 exit;
 }

 context = avcodec_alloc_context3(videocodec);
 if( context == NULL ) {
 fprintf(stderr, "could not allocate context with codec");
 return false;
 }
 if( init_video_encoder( context, WIDTH, HEIGHT ) ) 
 fprintf(stderr, " success initializing video encoder case one\n");
 else
 fprintf(stderr, " failure to initialize video encoder case one\n");
 avcodec_close( context );

 context = avcodec_alloc_context3(NULL);
 if( context == NULL ) {
 fprintf(stderr, "could not allocate context without codec");
 return false;
 }
 if( init_video_encoder( context, WIDTH, HEIGHT ) ) 
 fprintf(stderr, " success initializing video encoder case two\n");
 else
 fprintf(stderr, " failure to initialize video encoder case two\n");
 avcodec_close( context );
}


Here is the error message :


broken ffmpeg default settings detected
use an encoding preset (e.g. -vpre medium)
preset usage: -vpre <speed> -vpre <profile>
speed presets are listed in x264 --help
profile is optional; x264 defaults to high
failure to open codec: Generic error in an external library
failure to initialize video encoder case two
</profile></speed>

Is this the right approach to use ? How do I set the encoding preset ? The code appears already to do that.


-
Transcoding Videos Using FastAPI and ffmpeg
15 janvier 2024, par Sanji VinsmokeI created an API using Fast API where I upload one or more videos, may specify the resolution of transcoding, and the output is transcoded video from 240p upto the resolution I specified. Available resolutions are - 240p, 360p, 480p, 720p, 1080p. I used ffmpeg for the transcoding job.


The problem that is bugging me since yesterday is that, after deploying to the s3 bucket and adding the url for the index.m3u8 file in any hls player, the video is blank. Only the audio and streaming are working. I have tried tweaking with the parameters in the ffmpeg parameters, the error is still there. I tried manually transcoding a video file locally, even that video's index.m3u8 file is blank in live version. I added the relevant codes for this project. I implemented each feature one by one, but I simply cannot find the reason why the video is totally blank on live.


def transcode_video(input_path, output_folder, res, video_id, video_resolution, progress_bar=None):
 # Transcode the video into .m3u8 format with segment format
 output_path = os.path.join(output_folder, f"{res}_{video_id}.m3u8")

 # Use subprocess for command execution
 chunk_size = 1 # Specify the desired chunk size in seconds

 transcode_command = [
 "ffmpeg", "-i", input_path, "-vf", f"scale={res}:'trunc(ow/a/2)*2'", "-c:a", "aac", "-strict", "-2",
 "-f", "segment", "-segment_time", str(chunk_size), "-segment_list", output_path, "-segment_format", "ts",
 f"{output_path.replace('.m3u8', '_%03d.ts')}"
 ]

 try:
 subprocess.run(transcode_command, check=True, capture_output=True)
 except subprocess.CalledProcessError as e:
 print(f"Error during transcoding: {e}")
 print(f"FFmpeg error output: {e.stderr}")
 # Continue with the next video even if an error occurs
 return False

 # Update the progress bar
 if progress_bar:
 progress_bar.update(1)
 return True


def get_bandwidth(resolution):
 # Define a simple function to calculate bandwidth based on resolution
 resolutions_and_bandwidths = {
 240: 400000,
 360: 850000,
 480: 1400000,
 720: 2500000,
 1080: 4500000,
 }
 
 return resolutions_and_bandwidths.get(resolution, 0)
def create_index_m3u8(video_id, resolutions_to_transcode):
 # Write the index.m3u8 file
 index_m3u8_path = os.path.join(OUTPUT_FOLDER, f"index_{video_id}.m3u8")
 with open(index_m3u8_path, "w") as index_file:
 index_file.write("#EXTM3U\n")
 index_file.write("#EXT-X-VERSION:3\n")

 for res in resolutions_to_transcode:
 aspect_ratio = 16 / 9
 folder_name = f"{res}p_{video_id}"
 resolution_file_name = f"{res}_{video_id}.m3u8"
 index_file.write(
 f"#EXT-X-STREAM-INF:BANDWIDTH={get_bandwidth(res)},RESOLUTION={int(res * aspect_ratio)}x{res}\n{folder_name}/{resolution_file_name}\n"
 )


I tried reducing or increasing chunk size, adding codecs, setting up dimensions. Where am I doing wrong ?


My python version is 3.8.18, ffmpeg version-4.4.4, ffmpeg-python version-0.2.0


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