Recherche avancée

Sur d’autres sites (7907)

• Batch resizing videos to specific resolution with ffmpeg

  9 juin 2020, par tjk

  I need to resize all mp4 videos in a folder to a specific resolution. It is a vertical video that must be exactly 360x640px. Input videos can be of different resolutions, aspect ratios, vertical or horizontal. I am very new to this and so far I only got to this :

  



  for i in *.mp4; do ffmpeg -i "$i" -vf "scale='if(gt(a*sar,16/9),360,640*iw*sar/ih)':'if(gt(a*sar,16/9),360*ih/iw/sar,640)',pad=360:640:(ow-iw)/2:(oh-ih)/2,setsar=1" "converted/${i%.*}.mp4"; done


  



  When running this with 16 videos one of them (400x672px) won't resize with this error in log :

  



  [Parsed_pad_1 @ 0x7fd760548c00] Input area -10:0:370:640 not within the padded area 0:0:360:640 or zero-sized
[Parsed_pad_1 @ 0x7fd760548c00] Failed to configure input pad on Parsed_pad_1
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[aac @ 0x7fd76280da00] Qavg: 15546.137
[aac @ 0x7fd76280da00] 2 frames left in the queue on closing


  



  Please help to fix this.

  


• How to get information of dropped frames and resolution of the played video from Video player like VLC

  7 juillet 2020, par Ashutosh Singla

  I was playing 360° videos using whirligig player for my subjective test and I was wondering how can I get the information of dropped frames and resolution of video played by the player. 
The source resolution of the video is 1080p, and the frame rate is 30fps

  



  When I watching videos on YouTube, I am able to derive the above information by right clicking and looking at the 'stats for nerds' option - see example below :

  



  

  



  But didn't get the required information for the videos played on whirligig player such as dropped frames, actual bitrate playable on the player and playable resolution.

  



  Any suggestions ?

  


• How to not allow upload of HD content ?More than 1920 x 1080 || 1080 x 1920 resolution files are not allowed since hardware reasons

  23 juillet 2020, par azaono

  Struggling with making limitation to uploade HD file/content. Intent is to have possibility to rotate content. Limits are required due to hardware reasons.

  


          val ffmpeg = FFmpeg("ffmpeg")
        val ffprobe = FFprobe("ffprobe")
        val probeResult = ffprobe.probe("$targetLocation")
        val stream: FFmpegStream = probeResult.getStreams()[0]
        val aspectRatio = stream.width.toDouble() / stream.height
        
        if (stream.width > 1920) {
            Files.delete(targetLocation)
            throw IncorrectResolutionFileException()
        } else if (stream.height > 1080) {
            Files.delete(targetLocation)
            throw IncorrectResolutionFileException()
        }

        if (type == "image") {
            part.transferTo(thumbnailLocation)
        }

        val builder: FFmpegBuilder = FFmpegBuilder()
            .setInput("$targetLocation")
            .addOutput("$thumbnailLocation")
            .setFrames(1)
            .setVideoFilter("select='gte(n\\,10)',scale=200:-1")
            .done()
        val executor = FFmpegExecutor(ffmpeg)
        executor.createJob(builder).run()

        return aspectRatio
    } catch (ex: Exception) {
        throw FileStorageException("Could not store file $cleanPath. Please try again!", ex)
    }
}