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#3 The Safest Place
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ED-ME-5 1-DVD
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Mis à jour : Octobre 2011
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Revolution of Open-source and film making towards open film making
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Sur d’autres sites (6224)
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Flutter error in Ffmpeg, "Unhandled Exception : ProcessException : No such file or directory" in macOS desktop version
19 avril 2024, par pratik vekariyaI'm trying video trim video using ffmpeg, for macOS desktop application.


I have downloaded ffmpeg from here for macOS.


Here is my code


String mainPath = 'Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/';
 mainPath = mainPath.substring(0, mainPath.lastIndexOf("/"));
 
 Directory directoryExe3 = Directory("$mainPath");
 var dbPath = path.join(directoryExe3.path,
 "App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos");
//here in "Products/Debug/" folder desktop app will generate

//directoryExe3 path will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug

//and dbPath will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos

//so when app will run it can access it from this path

//executable code, command for ffmpeg

String transpose_str += "crop=" +
 out_w.toInt().toString() +
 ":" +
 out_h.toInt().toString() +
 ":" +
 x!.toInt().toString() +
 ":" +
 y!.toInt().toString() +
 ",";
 transpose_str += "scale=960:192";

Future<processresult> result_ = Process.run(dbPath, [
 "-ss",
 timestamp,
 "-i",
 inputFilePath,
 "-t",
 endTime,
 "-vf",
 transpose_str,
 "-an",
 "./temp.mp4",
 ]); 
</processresult>

Now when I run this in macOS desktop verison, it gives me error at Process.run that in dbPath, Unhandled Exception : ProcessException : No such file or directory.


Any help would be appreciate !


when i run this as desktop version it should get file from assets.


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Is there any possibility to transcode a h264 hls/m3u8 live stream into another HEVC (h265) hls/m3u8 live stream using FFmpeg in real time ?
2 septembre 2024, par Ghenadie PripaThe command I used :


ffmpeg -i https://tezaurtv.md/wp-content/uploads/live/index.m3u8 -c:v libx265 -b:v 1500k -tag:v hvc1 -c:a aac -b:a 128k -f hls -hls_time 10 -hls_list_size 10 -hls_flags delete_segments+append_list+program_date_time -hls_playlist_type event -hls_segment_type mpegts -hls_segment_filename "D:/BRUT/HLS/test/stream_%d.ts" -vsync 2 -rtbufsize 500M -loglevel debug D:/BRUT/HLS/test/stream.m3u8


I tried a lot of commands and parameters but nothing helps. The experiment is on local Windows. Transcode with ffmpeg and play with FFplay.


The problem is the following : After I start
stream.m3u8to play after a few seconds the picture and sound stops. What is wrong in the FFmpeg command ?

ffmpeg version 7.0.2-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
 built with gcc 13.2.0 (Rev5, Built by MSYS2 project)


ffplay version 7.0.2-full_build-www.gyan.dev Copyright (c) 2003-2024 the FFmpeg developers
 built with gcc 13.2.0 (Rev5, Built by MSYS2 project)


An error from FFplay :


[hevc @ 0000023d8c320940] Output frame with POC 239.
[hevc @ 0000023d8c320940] Decoded frame with POC 241.
[hevc @ 0000023d8c320e40] nal_unit_type: 35(AUD), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c320e40] nal_unit_type: 0(TRAIL_N), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c320e40] Output frame with POC 240.
[hevc @ 0000023d8c320e40] Decoded frame with POC 240.
[hevc @ 0000023d855aae80] nal_unit_type: 35(AUD), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d855aae80] nal_unit_type: 0(TRAIL_N), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d855aae80] Output frame with POC 241.
[hevc @ 0000023d855aae80] Decoded frame with POC 242.
[hevc @ 0000023d8c2cab40] nal_unit_type: 35(AUD), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c2cab40] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c2cab40] Output frame with POC 242.
[hevc @ 0000023d8c2cab40] Decoded frame with POC 247.
[hevc @ 0000023d8c2da9c0] nal_unit_type: 35(AUD), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c2da9c0] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 0
[hevc @ 0000023d8c2da9c0] Output frame with POC 243.
[hevc @ 0000023d8c2da9c0] Decoded frame with POC 245.
[hls @ 0000023d85544b80] Opening 'D:\BRUT\HLS\test\stream.m3u8' for reading
[hls @ 0000023d85544b80] Skip ('#EXT-X-VERSION:3')
[hls @ 0000023d85544b80] Skip ('#EXT-X-DISCONTINUITY')
[hls @ 0000023d85544b80] Skip ('#EXT-X-PROGRAM-DATE-TIME:2024-08-30T16:29:28.175+0300')
[AVIOContext @ 0000023d8c327040] Statistics: 207 bytes read, 0 seeks
[hls @ 0000023d85544b80] Opening 'D:\BRUT\HLS\test\stream.m3u8' for reading
[hls @ 0000023d85544b80] Skip ('#EXT-X-VERSION:3')sq= 0B
[hls @ 0000023d85544b80] Skip ('#EXT-X-DISCONTINUITY')
[hls @ 0000023d85544b80] Skip ('#EXT-X-PROGRAM-DATE-TIME:2024-08-30T16:29:28.175+0300')
[AVIOContext @ 0000023d8c326980] Statistics: 207 bytes read, 0 seeks
[hls @ 0000023d85544b80] Opening 'D:\BRUT\HLS\test\stream.m3u8' for reading
[hls @ 0000023d85544b80] Skip ('#EXT-X-VERSION:3')
[hls @ 0000023d85544b80] Skip ('#EXT-X-DISCONTINUITY')
[hls @ 0000023d85544b80] Skip ('#EXT-X-PROGRAM-DATE-TIME:2024-08-30T16:29:28.175+0300')
[AVIOContext @ 0000023d8c326f00] Statistics: 207 bytes read, 0 seeks
 11.30 A-V:-18.499 fd= 3 aq= 0KB vq= 0KB sq= 0B


I tried to transcode in real time hls h264 to hls 265.


-
Resize and overlay image on video in android efficiently
29 décembre 2016, par Bhushan LadheI want to resize image and video(2160 x 3840) to a same resolution(540 × 960) and then overlay image on video for whole time. This whole process is similar to capturing video and adding caption to it like snap-chat and saving it.
Since i am successful in doing so using FFMPEG library but it consumes considerable amount of time in processing.
I have searched the internet for other faster operations but no luck. I will post commands that i am using.
//1st command (video size from 59MB to 4MB, about time 110secs)
-i sdcard/VID_20161228_174315.mp4 -vf scale=540:960 sdcard/output540.mp4
//2nd command (image file , size done, time : a sec hence ignored)
-i sdcard/capture.jpg -vf scale=540:960 sdcard/capture540.png
//3rd command (time 80sec)
-i sdcard/output540.mp4 -i sdcard/capture540.png -filter_complex overlay=0:0 -r 30 sdcard/output_overlay.mp4So here using -preset and copying same audio from source did not work as expected.
Questions :
1) Should i use specific codec ?
2) How to achieve Minimum time for processing ?
3) Will applying multiple threads help ? If yes then how ? I want this process to work in background even if app is closed.
4) All other options that can combine to make an efficient solution ?
Log for 3rd command :
SUCCESS with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sdcard/output540.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.25.100
Duration: 00:00:10.09, start: 0.021333, bitrate: 2055 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 540x960 [SAR 1:1 DAR 9:16], 1930 kb/s, 16.75 fps, 16.75 tbr, 17152 tbn, 33.50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 119 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #1, png_pipe, from 'sdcard/output_540.png':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: png, rgba(pc), 540x960, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0xaca425f0] using SAR=1/1
[libx264 @ 0xaca425f0] using cpu capabilities: none!
[libx264 @ 0xaca425f0] profile High, level 3.1
[libx264 @ 0xaca425f0] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=9 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=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 'sdcard/output_overlay_forlog.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.25.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 540x960 [SAR 1:1 DAR 9:16], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
Metadata:
encoder : Lavc57.24.102 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.24.102 aac
Stream mapping:
Stream #0:0 (h264) -> overlay:main (graph 0)
Stream #1:0 (png) -> overlay:overlay (graph 0)
overlay (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame= 19 fps=0.0 q=0.0 size= 0kB time=00:00:00.88 bit
12-29 02:20:37.914 19213-19213/in.techzilla.happenning_client D/Ffmpeg: Finished command : ffmpeg [Ljava.lang.String;@1a223d4here one more txt file for full output
https://drive.google.com/file/d/0B60iSiCrzaVkUXFpYVFpdGdKN2M/view?usp=drivesdk
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