Questions tagged [transcoding]

The process of converting a media file from one format to another or changing the compression settings used.

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GStreamer mpegtsmux produces empty output file

I'm trying to construct a GStreamer pipeline to transcode MPEG2 video and MPEG1 audio in a MPEGTS container to H.264 and AAC and output to a filesink. The problem is: the output file is empty. If I ...
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Best way to handle stream with ffmpeg and GPU

So in my project, I need to capture a video stream, decode the video, run the individual frames through an object detection algorithm and then play the output as a video. This whole operation is ...
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how to get vdpau hardware acceleration using ffmpeg?

I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
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Fast encoding with ffmpeg

I know about presets but faster presets lose the video quality. Are there any hardware requirements I need to consider? Or are there any settings that I need to tweak? And lastly where do I place the -...
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FFMPEG: is it possible to offset output frames from a selection of specific frames?

I'm doing some ffmpeg (4.1.3) transcodings by extracting specific frames from the source, in this case, the source can be either a movie or an image sequence, all working fine with the following ...
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Adobe Encoder Desyncs Video/Audio (MTS to MP4)

I've been trying to transcode an MTS (recorded on a Panasonic) to MP4 with Adobe Media Encoder. The audio/video has consistently gone out of sync. I've matched the source, gone over all the settings, ...
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ffmpeg ProRes to MP4 Alters Colors Slightly

I cannot for the life of me figure out what is going wrong, but I have a ProRes MOV file with the following specifications: And I want to convert it to a 4:2:0 MP4 video file. Every time I attempt ...
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broacast tv specs.

can any one help me about how can i deliver this specs for a broadcast tv channel ? : im using fcpx and compressor 4. do i need any other app or can i manage it with those ? which specs i do on fcp ...
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HLS Preset Settings 240p, 360p, 480p, 720p and 1080p

I am trying to transcode mp4 videos into HLS using AWS transcoder. I see that there are only few presets available which are like 1M, 1.5M and the highest 2M. I am unable to get 240, 360 , 480,720p ...
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Best encoding setting for presentation like video

I have a video series that have a low fps by nature. The videos are in presentation format with audio. The video is produced using Adobe Premiere Pro CC 2015 and contains 4K image clips and 256kbps ...
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How to speed up DNxHR HQX capture with ffmpeg?

I'm trying to capture DNxHR HQX to my SSD. I want HQX because I need the 10-bit color for grading (HQX is a 12-bit codec, but HQ and below are all 8-bit). 8-bit HQ recording is no problem; I ...
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Any ffmpeg computing nodes out of there?

Sadly I don't have access to powerful workstations and it happens that I have to convert lot of videos, however I do have an high bandwidth network. Is there a free/paid computing cluster service ...
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Transcoding AVCHD MTS to Motion JPEG on a Mac

Bigtime video neophyte and I've not been able to figure this out after a day of trying. Hopefully this isn't a big deal - pls assume I know nothing. I have some AVCHD MTS files from my camcorder ...
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Streaming WebM on unsupported platforms (Safari, IE, etc)

I'd like to stream WebM videos to browsers that don't support it (like Safari/IE). I have no problem in converting the video to a supportable format (like MP4), but the encoding should be on-demand, ...
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Interesting features to use in FFmpeg

What are some interesting features or filters of FFmpeg that can lead to fun use-cases or used for improved quality? For instance, motion interpolation feature to increase FPS for better quality was a ...
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Transcode a video that is still downloading to a streaming output

I'm making a video player that plays files while downloading them. The problem that I face is that electron (= chrome browser) can not play some formats (e.g. H265 encoded MKV). I want a solution that ...
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FFMPEG: "smart encoding" when join video clips

is it possible join some clips of h.264 (or h.265) without re-encoding, (or minumum re-encoding, only where clips touch themself? Thanks!
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how to convert a given video file to all possible codec/container format combinations

My semi-smart LCD TV supports USB. I have a couple of video files on my laptop which I want to run on that big LCD TV, through a USB stick. The problem is that when I attach a USB stick containing my ...
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I want to convert .mp4 to .ts using H264 at constant framerate 25fps

I've been trying to do this conversion for a couple of days reading through forums ffmpeg -i in1.mp4 -vcodec libx264 -s 720x576 -vf "fps=25"-vsync cfr -b:v 2300k -acodec aac -b:a 128k out1....
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ffmpeg conversion - vp8 with alpha

I'm trying to convert a mov file (with alpha channel) to webm, vp8 with alpha, on windows. ffmpeg -i C0016.mov -s 960x540 -vcodec vp8 -pix_fmt yuva420p -metadata:s:v:0 alpha_mode="1" ...
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Create 4x2 grid mosaic

trying to create a 4x2 grid from 8 videos using the terminal on a mac. The code I am using is not working: ffmpeg -i input0.mov -i input1.mov -i input2.mov -i input3.mov -i input4.mov -i input5.mov -i ...
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Post-production editing audio/video out of sync

I am trying to add two videos using ffmpeg and the output video/audio is out of sync (and fast forwarded). Goal is to put intro.mp4 before the original file clip.flv My approach is to Change the ...
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Best ffmpeg configuration for universal video codec compatabiltiy across browsers

I intend to get a transcoding setting to support all browsers at the same time including, chrome, firefox and safari. Currently I am using following, yet this does not provide a valid video with ...
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FFMPEG -C:V Copy and -C:V Transcode

When I do it like this, -c:v copy -preset ultrafast -cfr 20 -tune zerolatency and it doesn't work I know that this is excpected because the video codec is copied and all the other parameters such as ...
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FFmpeg: DNxHR 444 10 bits transcoding issue (HDR project). SMPTE2084 unsupported?

I have a couple of questions regarding intra-frame codecs for editing purposes (in Premiere Pro). UPDATE (01/24/20). More details of the original issue after this: I seem to have encountered a dead ...
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Improve FrameServer performances

I followed ffmpeg guide to install debugmode frameserver. All works fine except with the fact that the frames served does not goes up to 25 fps. FFmpeg reports a speed of 0.9x.. My initial goal ...
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Encode or Transcode with ffmpeg and libx264 as fast as possible

I'm trying to tune out ffmpeg to squeeze as much fps as possible from my server machines with lot of cores. Sometimes expecially when there's also a scale (eg: shrinking down from 4k to full hd or ...
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Transcode FROM MPEG-DASH

I have an input MPEG-DASH stream and I want to transcode it. First of all, need to decode it and then route an output to FFmpeg and encode it, but not have any ideas how to decode MPEG-DASH. Please ...
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FFmpeg transcoding libx264 set only one P-frame

I transcoding mpeg2 data to h264 via libx264 codec and need to create the following GOP structure: I(IDR) P I P I try to perform it with the following command: ffmpeg -i INPUT -vcodec libx264 -...
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ffmpeg based JAVE video conversion taking a long time

I am using ffmpeg to convert videos to mp4 format in my application I have used JAVE and Xuggler for the same. My issue is that, video conversions are taking way too much of time. For example, a 50MB ...
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Where to start Transcoding with FFMPEG?

I would like to learn a lot about Transcoding video files with FFMPEG from any format to mp4 (hH264/AAC) format. We have a large repository of video files ranging from 1 MB to 2 GB of various formats ...
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FFMpeg set language as Unknown or unspecified in a QuickTime MOV

I have to transcode with FFMpeg some video with multiple audio where various audio track are not language related, just music and so on. I would like to assing as language something like Unspecified, ...
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