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• Mpeg2-TS bad output and pixelation from FFmpeg on Android

  8 décembre 2020, par henry

  I am using the FFmpeg extension for Exoplayer to play mpeg2ts video on a mobile device.
The device doesn't have a hardware codec for mpeg2ts video. So I want to use SW codec with FFmpeg.
But the output frames were broken, bad pixelation.
See the captured frame below.


  


  But when I ran the same application on an Aosp device, the video frame was correct.

  


  Does anyone have an idea why the output on mobile was broken ?
Actually, I don't have any background in FFmpeg and mpeg2ts media format.
And I just got this source from an Exoplayer distributor who is not available anymore.

  


  I added ffmpeg_jni file
ffmpeg_jni.cpp

  


• ffmpeg - how can I scale the video while perserving the total frames in it ?

  14 juin 2018, par choz

  I have a video with a size of 515 x 755, that I would like to resize proportionally to 206 x 302 (so, factor is 2.5).

  In this video, I have the total of 588 frames, and I use ffmpeg to scale it, with this command.

  ffmpeg -i video.mp4 -vf scale=206:-1 xRotation_206.mp4

  And I use this to check how many frames are there in the video, based on this answer.

  ffmpeg -i video.mp4 -map 0:v:0 -c copy -f null - 2>&1 | awk '/frame=/ {print $2}'

  The original video frames is good (588 frames). But, after resizing with the command above, my converted video now has 604 frames.

  The question is, how can I resize the video by preserving the total frames in it ? It doesn’t really have to be ffmpeg approach, and any suggestion is appreciated.

  Here’s the sample video that I use : Link

• FFMPEG - Converting MKV to MP4 on Gdrive using rclone mount. ERROR : output file #0 does not contain any stream

  30 avril 2020, par Enrique Torrez

  I am trying to convert video files from my back-up rip files library that I have on my Gdrive account. I was successfully able to set up a dedicated server + plexserver + rclone + gdrive. I have files that are big and my family are not able to stream them due to the poor internet service that I have in my country. So I am trying to reduce the file size so it can be streamed directly

  



  My rclone mount script is :

  



  rclone mount gcache: /path  --tpslimit 5 --allow-other --acd-templink-threshold 0 --stats 1s --buffer-size 64M --timeout 5s --contimeout 5s --max-read-ahead 1G --drive-chunk-size 64M -vv &


  



  And my ffmpeg script is :

  



  ffmpeg -i origen.mkv -c:v copy -movflags faststart -strict -2 convertedfile.mp4


  



  I had the following errors :

  



  moov atom not found


  



  I used this command :

  



  AtomicParsley myVideo.mp4 -P


  



  Now when I execute

  



  ffmpeg -i convertfile.mp4


  



  I get this error :

  



  Output file #0 does not contain any stream


  



  What am I doing wrong ? I need some help please.