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• FFMPEG Growing Input files [closed]

  12 novembre 2024, par user726720

  I'm having issues with piping the ffmpeg out to the ffmpeg input. I have tried as below

  


  ffmpeg -i "y:\3000012936-TXMHD.mxf" -vcodec copy -acodec copy -f mpegts pipe:1 | ffmpeg -re -i pipe:0 -pix_fmt yuv420p -vsync 1 -map 0:v:0 -map 0:a:0 -c:a aac -c:v libx264 -use_template 1 -use_timeline 1 -init_seg_name  "init-stream$RepresentationID$-$Bandwidth$.mp4" -media_seg_name "chunk-stream$RepresentationID$-$Number%05d$.$ext$" -b:v 1500k -b:a 128k -ac 2 -profile:v main -level:v 3.0  -s 1920x1080 -r 25 -vsync passthrough -increment_tc 1 -adaptation_sets "id=0,streams=v id=1,streams=a" -g 100 -keyint_min 100 -seg_duration 5 -frag_duration 5  -dash_segment_type auto -f dash  "stream.mpd"


  


  But I'm getting an error :

  


  


  Conversion failed ! av_interleaved_write_frame() : Broken pipe Error
writing trailer of pipe:1 : Broken pipe

  


  


  The input file is MXF, and output is going to be MPEG DASH. The reason to do the piping is because the input file is a growing mxf file. If i do it without piping the ffmpeg just closes before the mxf file is written completely.

  


• Error compiling and building DashEncoder code and how to play the .mpd file when generated [closed]

  11 avril 2013, par niuu

  I'm trying to build the DashEncoder code which I downloaded from github https://github.com/slederer/DASHEncoder. Well, I followed all the instructions given in the how to compile dash file. installed Gpac n X264 and compiled both successfully. Then did make of Dashencoder and ran it as ./Dashencoder. But I found some issues in it. Got this log :

  ==========DASH ENCODER===============
  Unknown option in resourcefile : sql-pw :
  current encoder x264
  YES
  x264 encoding @ 300 kbps : Pass 1
  x264 : x264 —profile baseline —preset slow —verbose —fps 24 —vbv-maxrate 300 —vbv-bufsize 600 —scenecut 0 —keyint 48 —output /opt/lampp/htdocs/tests_updates/sintel_trailer_2k_480p24_300kbit.h264 /home/niu/sintel_trailer_2k_480p24.y4m >out.txt 2>&1
  mkdir : cannot create directory

  /opt/lampp/htdocs/tests_updates/sintel_300kbit': File exists
cp: omitting directory

  /opt/lampp/htdocs/tests_updates/'
  copy audio : cp /opt/lampp/htdocs/tests_updates/ /opt/lampp/htdocs/tests_updates/sintel_300kbit/MP4Box multiplexing Video : /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264
  mp4box : MP4Box -add /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264 /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
  AVC-H264 import - frame size 854 x 480 at 24.000 FPS
  AVC Import results : 1253 samples - Slices : 27 I 1226 P 0 B - 1 SEI - 27 IDR
  Saving to /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4 : 0.500 secs Interleaving
  MP4Box multiplexing Audio :/opt/lampp/htdocs/tests_updates/sintel_300kbit/
  mp4box : MP4Box -add /opt/lampp/htdocs/tests_updates/sintel_300kbit/ /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
  Unknown input file type
  Unknown input file type
  Error importing /opt/lampp/htdocs/tests_updates/sintel_300kbit/ : Bad Parameter
  MP4Box Cleaning ...
  mp4box : MP4Box -no-sys /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
  Saving /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4 : 0.500 secs Interleaving
  MP4Box segmentation : /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.h264
  mp4box : MP4Box -frag 2000 -dash 2000 -rap -segment-name /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
  DASH-ing file : 2.00s segments 2.00s fragments single sidx per segment
  Spliting segments at GOP boundaries
  [DASH] Generating MPD at time 2013-03-16T16:40:03Z
  DASHing file /opt/lampp/htdocs/tests_updates/sintel_300kbit/sintel_trailer_2k_480p24_300kbit.mp4
  terminate called after throwing an instance of 'std::out_of_range'
  what() : basic_string::substr
  Error : Unable to open MPD file !Aborted
  Why is this error at the end ? and also one folder got created in my /opt/lampp/htdocs/tests_updates/sintel_300kbit. which has two types of files : 27 files of .m4s extension 1 file -sintelinit.mp4 1 file- sintel_trailer_2k_480p24_300kbit.mp4 , which when played in vlc player played the video bt no audio ! &

  1 file- sintel_trailer_2k_480p24_300kbit.h264 which cannot be opened.

  No .mpd file was created.

  Also I want to know aft creating that .mpd file how will i be able to test it on my android client say media player.

  I am damn confused with all this happening. Please help

• Get audio (M4A or MP3) file links directly from YouTube

  10 mars 2018, par Alex

  I am developing a PHP script that obtains video download links from YouTube. The ones I am grabbing are MP4 (720p) and MP4 (360p) (no-DASH format).

  My script is similar to this PHP class : https://github.com/Athlon1600/youtube-downloader

  It allows me to download any YouTube video that I want, no matter if it has copyright or not. It handles everything with signature ciphering and deciphering included.

  However, apart from videos, I would like to obtain audio download links from YouTube videos as well, either in MP3 or M4A.

  (M4A files are provided by YouTube, but they are in DASH format, which means, it’s not a complete file, but a collection of files that need to be merged together)

  Is there a way to obtain MP3 audio download links directly from YouTube ?

  I would like to avoid using FFMPEG library as it requires a lot of resources.

  In the case that using a library like that is the only option, what’s the most optimal way to convert MP4 files to MP3 files ?

  Is there any more efficient alternative than FFMPEG ?

  PLEASE avoid comments regarding YouTube TOS