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Questions tagged [transcoding]

Transcoding is the direct digital-to-digital data conversion of one encoding to another (video and audio format)

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Transcode GCS files using ffmpeg

My ultimate goal is to transcode video files uploaded to one GCS bucket, transcode them for HLS using App Engine, then store them in another bucket for streaming. I started with code someone else made which closely fit my use case. Right now I just…
hudsonhooper
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Blackberry and Iphone Video format transcoding from WMV

I need to be able to deploy a video to both Iphone and Blackberry platform, Is there a shared format that they both can play? The deployment is via email as attachment. This can save me some time with testing, if someone had the same problem and can…
David MZ
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Are there any resources listing current codecs and formats not supported by FFmpeg?

We are building a service where we do not know what format/codec a video uploaded by a user is in. Due to the nature of the application, we expect input video formats to be very fragmented, diverse and niche. We are currently using FFmpeg to…
Alexander Swann
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HEVC (x265) encoding in Instagram videos?

Is Instagram using x265 as an encoding format to further compress and reformat the uploaded videos for mobile devices? I tried doing ffprobe on the video downloaded (after sniffing the https traffic and getting the url from the GET body), but it…
Arpit Singh
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AWS Elemental MediaConvert - Remote Input Different from S3

I've already developed a service that takes a pool of MP4 files and transforms them into HLS format for VoD-related purposes. I'm considering migrating my solution towards AWS Elemental MediaConvert, which seems very promising. The only problem is,…
TheLebDev
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TimedMetadata encoding with MediaStreamSource and MediaTranscoder

I am building a C# .NET Core application that gathers user interaction data and stores it alongside a video feed. I intend to utilize timed metadata in an MPEG container to store the interaction data and h264 encoded video data. According to the…
Mark
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spymemcached get and incr methods give wholly different results

I use spymemcached 2.6rc1 in my Java project where I want to use the Long class as a storable object. Unfortunately, when I store e.g. new Long(0) object, the get(...) and incr(...) give the wholly different results - get gives Long object that…
Simon
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VLC command line to stream/convert/record from an rtsp stream

I am using Lubuntu linux 18.04LTS, VLC 3.0.8 trying to record via vlc a video stream from a security camera and so far have not had success. I tried using the GUI "Convert" but despite choosing mp4, it seems to only play back as an mp3. Then I…
user1149499
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Is there a way to play .mxf video on Android?

According to developer.android.com, the Android supports the playing of video using the H.263, H.264 AVC, MPEG4 SP and VP8 codecs. However, I want to play a video encoded in the .mxf format (Material eXchange Format,…
Gorkamorka
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transcoding file in cloud function saves only one chunk and fires end event

I've written this cloud function which transcodes a MOV file to MP4 but after function runs I only see saved video 1.3kb or something but everything runs smoothly not sure what's happening. I don't see any errors generated in console but I'm sure…
Rehan
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FFMPEG: Select minimum of Original and Specified Bitrate

I'm transcoding an RTMP stream using FFMPEG. I want the output to have a bitrate of 600k(approx) if the original bitrate is greater than 600k and otherwise the output should have the original bitrate. I've looked at -minrate, -maxrate, -bufsize. But…
tezz
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Webrtc-sip codec transcoding

I have a setup to make sip-webrtc audio call and I have a scenario, where my browser uses only opus codec and my asterisk using only ilbc codec. So how can we make an audio to work in this scenrio? As I read from google we can do this by codec…
Linux Teki
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mp4fragment reduces video file duration

Trying to create fragmented MP4 file from a non-fragmented one via command mp4fragment --fragment-duration 10000 5ca31321e4b068348e2220a9-480p.mp4 5ca31321e4b068348e2220a9-480p.mp4_fragmented But got media with incorrect duration of 2880000 ms (~…
Lesha Pipiev
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How can I determine the resolution of incoming RTMP streams with ffmpeg?

I'm using ffmpeg to transcode RTMP from my own RTMP server into HLS ready H.264. At the moment, I'm executing a command of the following form ffmpeg -i rtmp://:
toastedDeli
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Concatenation and Transcoding of MPEG-TS files FFMPEG

I have a DVR which records over-the-air TV and saves the recordings in the MPEG-TS format, splitting each episode across multiple files, each ~500 MB in size. To simplify archiving, I have been trying to write a shell script to automate the process…
SquawkBirdies
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