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• Transcoding AVI to DNxHD mov – only outputting first few seconds of the video

  19 janvier 2021, par 3uchre

  Trying to convert a non-interleaved AVI file into the DNxHD codec with a mov container. The command is working fine, but the output file is coming out at only 4 seconds long (it's supposed to be 1m 5s) Info below, any help would be hugely appreciated. I have a feeling it may be due to the fact that the AVI has a missing index, but my friend spent hours rendering this file out of blender and it would be a shame to have to do it again. Thanks in advance for any help on this – I am not very experienced with this software !

  


  Here's the command and log :

  


  ffmpeg -i /Users/***/Downloads/1MinuteIntro0001-3930.avi -fflags ignidx -map 0:v -c:v dnxhd -pix_fmt yuv422p -filter:v fps=60 -trellis 0 -profile:v dnxhr_lb -y 1_orbitalboom.mov

ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers
built with Apple clang version 12.0.0 (clang-1200.0.32.21)
configuration: --prefix='/usr/local/Cellar/ffmpeg@3.4/3.4.2' --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --disable-jack --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
libavutil 55. 78.100 / 55. 78.100
libavcodec  57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter  6.107.100 / 6.107.100
libavresample  3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample  2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[avi @ 0x7fb6fb00be00] Non-interleaved AVI without index, switching to interleaved
Input #0, avi, from '/Users/***/Downloads/1MinuteIntro0001-3930.avi':
Duration: 00:01:05.50, start: 0.000000, bitrate: 851990 kb/s
Stream #0:0: Video: rawvideo, bgr24, 4096x2048, 60 fps, 60 tbr, 60 tbn, 60 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> dnxhd (native))
Press [q] to stop, [?] for help
Output #0, mov, to '1_orbitalboom.mov':
Metadata:
encoder  : Lavf57.83.100
Stream #0:0: Video: dnxhd (DNXHR LB) (AVdh / 0x68645641), yuv422p, 4096x2048, q=2-1024, 200 kb/s, 60 fps, 15360 tbn, 60 tbc
Metadata:
encoder  : Lavc57.107.100 dnxhd
frame= 1 fps=0.4 q=0.0 size=  0kB time=00:00:00.00 bitrate=N/A speed=  frame=  15 fps=5.4 q=1.0 size= 9472kB time=00:00:00.20 bitrate=387848.5kbitsframe=  29 fps=8.8 q=1.0 size=  19200kB time=00:00:00.41 bitrate=377428.9kbitsframe=  42 fps= 11 q=1.0 size=  28672kB time=00:00:00.63 bitrate=370827.4kbitsframe=  56 fps= 13 q=2.0 size=  37632kB time=00:00:00.83 bitrate=369909.3kbitsframe=  69 fps= 14 q=2.0 size=  47360kB time=00:00:01.05 bitrate=369475.6kbitsframe=  83 fps= 15 q=3.0 size=  57600kB time=00:00:01.28 bitrate=367664.2kbitsframe=  98 fps= 17 q=4.0 size=  68608kB time=00:00:01.53 bitrate=366530.4kbitsframe= 112 fps= 17 q=5.0 size=  79104kB time=00:00:01.76 bitrate=366790.4kbitsframe= 127 fps= 18 q=5.0 size=  90112kB time=00:00:02.01 bitrate=366036.6kbitsframe= 141 fps= 19 q=7.0 size= 100608kB time=00:00:02.25 bitrate=366292.1kbitsframe= 155 fps= 19 q=8.0 size= 110848kB time=00:00:02.48 bitrate=365655.1kbitsframe= 169 fps= 20 q=9.0 size= 121344kB time=00:00:02.71 bitrate=365899.3kbitsframe= 183 fps= 20 q=11.0 size= 131584kB time=00:00:02.95 bitrate=365394.1kbitframe= 197 fps= 21 q=13.0 size= 142080kB time=00:00:03.18 bitrate=365621.8kbitframe= 212 fps= 21 q=17.0 size= 152320kB time=00:00:03.41 bitrate=365204.4kbitframe= 227 fps= 22 q=20.0 size= 163328kB time=00:00:03.66 bitrate=364898.0kbitframe= 242 fps= 22 q=24.0 size= 174592kB time=00:00:03.91 bitrate=365166.2kbitframe= 257 fps= 22 q=28.0 size= 185600kB time=00:00:04.16 bitrate=364898.8kbitframe= 272 fps= 23 q=31.0 size= 196608kB time=00:00:04.41 bitrate=364661.7kbitframe= 277 fps= 22 q=33.0 Lsize= 204982kB time=00:00:04.60 bitrate=365040.8kbits/s speed=0.37x  
video:204980kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000896%


  


• first 3 seconds m3u8 clip, converted from another m3u8 clip by node js isn't working

  14 janvier 2021, par Alan

  index.js

  


  
const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path;
const ffmpeg = require('fluent-ffmpeg');
const process = require('process');


const args = process.argv.slice(2);
if (args.length !== 4) {
    console.error('Incorrect number of arguments');
    process.exit(1);
  }
const startTime = args[0];
const timeDuration = args[1];
const inputFile = args[2];
const outputFile=args[3];

ffmpeg.setFfmpegPath(ffmpegPath);

ffmpeg(inputFile)
  .setStartTime(startTime)
  .setDuration(timeDuration)
  .output(outputFile)
  .addOption('-level', 3.0)
  .addOption('-start_number', 0)
  .addOption('-hls_list_size', 0)
   .addOption('-f hls')
  .on('end', function(err) {
    if(!err) { console.log('conversion Done') }
  })
  .on('error', function(err){
    console.log('error: ', err)
  }).run();




  


  


  Here is my index.js file. I'm running this command on the terminal to generate a m3u8 clip from another m3u8 file
node index.js 6 30 ./input.m3u8 ./output.m3u8 
Here 6 is the starting time in seconds and 30 is the time duration. The problem is when the m3u8 clip is created, the first ts file is like this

It's in kb format while others in mb format. So while playing the m3u8 clip, first 3 seconds nothing happens.I have tried this with different m3u8 files and this issue been happening with the first ts file only and it's only 3 seconds
Here is a link to the m3u8 demo file https://mp4.to/downloads/0cb552cd749c4cf4b
Any trick on how to solve this ?

  


  


• first few seconds of m3u8 clip isn't working, which is generated from another m3u8 file by node js

  13 janvier 2021, par Alan

  index.js

  


  
const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path;
const ffmpeg = require('fluent-ffmpeg');
const process = require('process');


const args = process.argv.slice(2);
if (args.length !== 4) {
    console.error('Incorrect number of arguments');
    process.exit(1);
  }
const startTime = args[0];
const timeDuration = args[1];
const inputFile = args[2];
const outputFile=args[3];

ffmpeg.setFfmpegPath(ffmpegPath);

ffmpeg(inputFile)
  .setStartTime(startTime)
  .setDuration(timeDuration)
  .output(outputFile)
  .outputOptions('-hls_list_size 0')
  .on('end', function(err) {
    if(!err) { console.log('conversion Done') }
  })
  .on('error', function(err){
    console.log('error: ', err)
  }).run();



  


  


  Here is my code which I'm using to create a clip m3u8 formatted file from another m3u8 file. I'm using this command on the terminal to generate it.
Here is the command

  


  node index.js 5 40 ../path/input.m3u8 ../path/output.m3u8

  


  so here 5 is the starting time and 40 is the duration in seconds.
The issue is the first ts file it's generating (for example output_test0.ts) isn't working as it should. It's getting generated in kb format while the others in MB format. So when I play the new m3u8 file, the first 3-5 seconds clip is a static pic but other than that everything works fine.
Here is a link to the m3u8 file. https://mp4.to/downloads/0cb552cd749c4cf4b

  


  


  


  

  


  


  


  As you can see the first output_test0.ts file isn't like others. Other output ts files are in MB while the first one only in kb and this case been happening with the first file only. Any command input I'm missing ? need help.