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DJ Z-trip - Victory Lap : The Obama Mix Pt. 2
15 septembre 2011
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Participer à sa traduction
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Sur d’autres sites (12503)
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How to cut video into 4M size mp4 video using ffmpeg
13 octobre 2022, par fxsshiwoI have a *.mp4 video file, which is cut to a fixed size using ffmpeg, using the following commands


'/usr/local/ffmpeg/bin/ffmpeg' '-y' '-ss' '00:00:00.00' '-i' '57066524-1.mp4' '-t' '00:00:05.00' '-vcodec' 'libx264' '-acodec' 'libmp3lame' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes6332bdc9814883qh89/pass-6332bdc98160c' '1.mp4'


but I get an error saying -


Unknown encoder 'libx264'


Here is the complete error message:


ffmpeg version 5.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-44)
 configuration: --enable-shared --enable-swscale --enable-gpl --enable-nonfree --enable-pic --prefix=/usr/local/ffmpeg --enable-version3 --enable-postproc --enable-pthreads --enable-static --enable-libx264
 libavutil 57. 28.100 / 57. 28.100
 libavcodec 59. 37.100 / 59. 37.100
 libavformat 59. 27.100 / 59. 27.100
 libavdevice 59. 7.100 / 59. 7.100
 libavfilter 8. 44.100 / 8. 44.100
 libswscale 6. 7.100 / 6. 7.100
 libswresample 4. 7.100 / 4. 7.100
 libpostproc 56. 6.100 / 56. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '57066524-1.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41
 creation_time : 2022-09-26T02:06:24.000000Z
 Duration: 00:00:26.11, start: 0.000000, bitrate: 6683 kb/s
 Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 720x720 [SAR 1:1 DAR 1:1], 6367 kb/s, 25 fps, 25 tbr, 25k tbn (default)
 Metadata:
 creation_time : 2022-09-26T02:06:24.000000Z
 handler_name : ?Mainconcept Video Media Handler
 vendor_id : [0][0][0][0]
 encoder : AVC Coding
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
 Metadata:
 creation_time : 2022-09-26T02:06:24.000000Z
 handler_name : #Mainconcept MP4 Sound Media Handler
 vendor_id : [0][0][0][0]
Unknown encoder 'libx264'




I try to install libx264 and recompile, I still get this error


[install libx264]
git clone https://code.videolan.org/videolan/x264.git
cd x264
./configure --prefix=/usr/local/x264/ --includedir=/usr/local/include --libdir=/usr/local/lib --enable-shared
./configure --prefix=/usr/softinstall/x264/ --includedir=/usr/local/include --libdir=/usr/local/lib --enable-shared

[compile ffmpeg]
wget http://www.ffmpeg.org/releases/ffmpeg-5.1.tar.gz
tar -zxvf ffmpeg-5.1.tar.gz
cd ffmpeg-5.1
./configure --enable-shared --enable-swscale --enable-gpl --enable-nonfree --enable-pic --prefix=/usr/local/ffmpeg --enable-version3 --enable-postproc --enable-pthreads --enable-static --enable-libx264 --enable-libmp3lame



My questions :


- 

- How to install ffmpeg with libx264
- How to cut video into fixed size with ffmpeg






-
streaming data with ffmpeg using pipe - freeze after few seconds
13 octobre 2022, par tamirgIm fetching some video data, and trying to stream it using ffmpeg.
what i do is create an ffmpeg process, set it to get info from '-', and then when i fetch the video data i write it to the process STDIN.


My problem is that its working, but only working for around 3 seconds, then the stream stops, and there are no longer any logs from ffmpeg.


Im running ffmpeg with log level debug, and it seems to parse the data ok, which i guess thats why it works for 3 seconds, but then the ffmpeg stops printing any more logs.


I dont want to attach all the logs because its too much, but ill write the main parts.
Maybe the ffmpeg process is missing some arguments ?


It starts with :


Clipping frame in rate conversion by 0.000008
2022-10-13T09:16:53.535546194Z cur_dts is invalid (this is harmless if it occurs once at the start per stream)
2022-10-13T09:16:53.535987546Z Last message repeated 2 times
2022-10-13T09:16:53.536012520Z [hevc @ 0x55f4e8798100] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.537017901Z [hevc @ 0x55f4e86eeb80] Decoded frame with POC 0.
2022-10-13T09:16:53.538652961Z [hevc @ 0x55f4e8798100] Output frame with POC 8.
2022-10-13T09:16:53.538782714Z [hevc @ 0x55f4e8789c00] Decoded frame with POC 1.
2022-10-13T09:16:53.540362322Z [hevc @ 0x55f4e8773500] Decoded frame with POC 2.
2022-10-13T09:16:53.540989229Z cur_dts is invalid (this is harmless if it occurs once at the start per stream)
2022-10-13T09:16:53.541118680Z Last message repeated 1 times
2022-10-13T09:16:53.541161109Z [hevc @ 0x55f4e86eeb80] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.542663730Z [hevc @ 0x55f4e86eeb80] Output frame with POC 9.
2022-10-13T09:16:53.544954074Z [hevc @ 0x55f4e8783e80] Decoded frame with POC 3.
2022-10-13T09:16:53.545102776Z cur_dts is invalid (this is harmless if it occurs once at the start per stream)
2022-10-13T09:16:53.545165406Z Last message repeated 2 times
2022-10-13T09:16:53.545175969Z [hevc @ 0x55f4e8789c00] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.546742754Z [hevc @ 0x55f4e8789c00] Output frame with POC 10.
2022-10-13T09:16:53.547695241Z [hevc @ 0x55f4e8877c40] Decoded frame with POC 4.
2022-10-13T09:16:53.549347290Z cur_dts is invalid (this is harmless if it occurs once at the start per stream)



then :


2022-10-13T09:16:53.828180084Z cur_dts is invalid (this is harmless if it occurs once at the start per stream)

2022-10-13T09:16:53.831843061Z Last message repeated 2 times
2022-10-13T09:16:53.831902903Z [hevc @ 0x55f4e88984c0] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.831909160Z [hevc @ 0x55f4e88984c0] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.831912827Z [hevc @ 0x55f4e88984c0] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.832173968Z [hevc @ 0x55f4e88984c0] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.832309139Z [hevc @ 0x55f4e88984c0] Decoding VPS
2022-10-13T09:16:53.832324955Z [hevc @ 0x55f4e88984c0] Main profile bitstream
2022-10-13T09:16:53.832651015Z [hevc @ 0x55f4e88984c0] Decoding SPS
2022-10-13T09:16:53.832730623Z [hevc @ 0x55f4e88984c0] Main profile bitstream
2022-10-13T09:16:53.832785521Z [hevc @ 0x55f4e88984c0] Decoding VUI
2022-10-13T09:16:53.832833202Z [hevc @ 0x55f4e88984c0] Decoding PPS
2022-10-13T09:16:53.833112865Z [hevc @ 0x55f4e88984c0] Output frame with POC 0.
2022-10-13T09:16:53.835713007Z [hevc @ 0x55f4e8888080] Decoded frame with POC 59.
2022-10-13T09:16:53.836572581Z [libx264 @ 0x55f4e8794800] frame= 0 QP=44.23 NAL=3 Slice:I Poc:0 I:14400 P:0 SKIP:0 size=41597 bytes
2022-10-13T09:16:53.836783822Z [rtp @ 0x55f4eaa75fc0] Sending NAL 7 of len 24 M=0
2022-10-13T09:16:53.836805582Z [rtp @ 0x55f4eaa75fc0] Sending NAL 8 of len 4 M=0
2022-10-13T09:16:53.836809885Z [rtp @ 0x55f4eaa75fc0] Sending NAL 6 of len 642 M=0
2022-10-13T09:16:53.836830503Z [rtp @ 0x55f4eaa75fc0] Sending NAL 5 of len 40913 M=1
2022-10-13T09:16:53.836836082Z [rtp @ 0x55f4eaa75fc0] NAL size 40913 > 1460
2022-10-13T09:16:53.837084718Z [hevc @ 0x55f4e88a8900] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.837193504Z [hevc @ 0x55f4e88a8900] Output frame with POC 1.
2022-10-13T09:16:53.844457060Z [libx264 @ 0x55f4e8794800] frame= 1 QP=48.02 NAL=2 Slice:P Poc:2 I:16 P:655 SKIP:13729 size=1459 bytes
2022-10-13T09:16:53.844621824Z [rtp @ 0x55f4eaa75fc0] Sending NAL 1 of len 1455 M=1
2022-10-13T09:16:53.844680058Z [hevc @ 0x55f4e8798100] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:53.844749212Z [hevc @ 0x55f4e8798100] Output frame with POC 2.
2022-10-13T09:16:53.851913353Z [libx264 @ 0x55f4e8794800] frame= 2 QP=44.00 NAL=2 Slice:P Poc:4 I:0 P:11 SKIP:14389 size=48 bytes



and finally the last logs are those, and afterwards i don't get anymore logs :


2022-10-13T09:16:56.836957083Z [NULL @ 0x55f4e86e7a00] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:56.837158270Z [hevc @ 0x55f4e8773500] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
2022-10-13T09:16:56.837355973Z [hevc @ 0x55f4e8773500] Output frame with POC 59.
2022-10-13T09:16:56.837935475Z [hevc @ 0x55f4e86eeb80] Decoded frame with POC 57.
2022-10-13T09:16:56.840799210Z [hevc @ 0x55f4e8789c00] Decoded frame with POC 58.
2022-10-13T09:16:56.842434529Z [libx264 @ 0x55f4e8794800] frame= 59 QP=33.00 NAL=2 Slice:P Poc:118 I:11 P:952 SKIP:13437 size=5251 bytes
2022-10-13T09:16:56.842472226Z [rtp @ 0x55f4eaa75fc0] Sending NAL 1 of len 5247 M=1
2022-10-13T09:16:56.842478464Z [rtp @ 0x55f4eaa75fc0] NAL size 5247 > 1460
2022-10-13T09:16:56.846625001Z [hevc @ 0x55f4e8773500] Decoded frame with POC 59.



-
batch scripting help passing arguments to ffmpeg
20 octobre 2022, par notsolowkiI need to join some videos parts together into 1 part. Im working from a folder called series. series contains multiple subfolder 1,2,3,4 etc that represent video number. each sub folder contains the parts to be joined together.


I made a batch script that seems to be able to make a list of sub directories and make a list of sub directory contents,


however run i run the script and try to pass the information from "mylist" line by line to ffmpeg it dont seem to work it complains invalid input information detected.


I intended for the batch script to start at folder 1 and pass the file names from "mylist.txt" to ffmpeg input 1 by one untill the last folder in folderlist.txt is processed.


What am i doing wrong. how can i make this script work ?


:: Create File List
for /D %%G in ("%cd%\*")DO ( 

for %%i in ("%%~nxG"\*.mp4) do echo file '%%i'>> mylist.txt
echo %%~nxG >> folderlist.txt

)

:: Concatenate Files
::for /F "delims=" %%a in (mylist.txt) do (
ffmpeg -f concat -safe 0 -i %%a -c copy %%a.mp4
::)
pause
@echo off


pause



the error i get when i run it from ffmpeg after running the batch is,


C:\Users\Laptop\Desktop\t10>(ffmpeg -f concat -safe 0 -i "file '4\Tosh.0 April 17 2018 10 1004 April 17 2018 - Ticket Girl Act 1.mp4'" -c copy file '4\Tosh.0 April 17 2018 10 1004 April 17 2018 - Ticket Girl Act 1.mp4'.mp4 )
ffmpeg version 2022-10-06-git-2c2aaa5bd0-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 57. 39.100 / 57. 39.100
 libavcodec 59. 50.100 / 59. 50.100
 libavformat 59. 34.100 / 59. 34.100
 libavdevice 59. 8.101 / 59. 8.101
 libavfilter 8. 49.101 / 8. 49.101
 libswscale 6. 8.112 / 6. 8.112
 libswresample 4. 9.100 / 4. 9.100
 libpostproc 56. 7.100 / 56. 7.100
file '4\Tosh.0 April 17 2018 10 1004 April 17 2018 - Ticket Girl Act 1.mp4': No such file or directory