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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

Sur d’autres sites (7154)

  • FFMPEG - Streaming GoPro4 to RSTP

    20 mai 2017, par Winged

    Greeting !
    I’m planning to capture a realtime streaming video from GoPro4 and load it into TouchDesigner in order to use this footage in a projection mapping project.

    So far I was able to play GoPro4 stream using ffplay doing as follows :
    1. Host GoPro4 WiFi hotspot.
    2. Connect a laptop WiFi to GoPro4’s hotspot.
    3. Restart GoPro stream service by opening ’http://10.5.5.9/gp/gpControl/execute?p1=gpStream&c1=restart’ in s browser.
    4. Run ffplay command in order to open ffplay stream video window : ’ffplay -an -fflags nobuffer -f:v mpegts -probesize 8192 rtp ://10.5.5.9:8554’

    The next step I opt to make it to re-stream this signal into RTSP protocol so TouchDesigner could receive this signal.

    And here is my question - how to re-stream this input to RTSP ?

  • FFMPEG - Streaming GoPro4 to RSTP

    20 mai 2017, par Winged

    Greeting !
    I’m planning to capture a realtime streaming video from GoPro4 and load it into TouchDesigner in order to use this footage in a projection mapping project.

    So far I was able to play GoPro4 stream using ffplay doing as follows :
    1. Host GoPro4 WiFi hotspot.
    2. Connect a laptop WiFi to GoPro4’s hotspot.
    3. Restart GoPro stream service by opening ’http://10.5.5.9/gp/gpControl/execute?p1=gpStream&c1=restart’ in s browser.
    4. Run ffplay command in order to open ffplay stream video window : ’ffplay -an -fflags nobuffer -f:v mpegts -probesize 8192 rtp ://10.5.5.9:8554’

    The next step I opt to make it to re-stream this signal into RTSP protocol so TouchDesigner could receive this signal.

    And here is my question - how to re-stream this input to RTSP ?

  • How to "unconcatenate" MP4 file ?

    17 avril 2023, par arne

    I used Losseless Cut (which uses ffmpeg) to concatenate a bunch of MP4 files using ffmpeg concat demuxer. Unfortunately I didnt' check the result before deleting the source clips. The first clip had different format than the rest. The resulting clip has all the audio and video from the first clip. Rest of the video gives decoding errors.

    


    I'm looking for a way how to "unconcatenate" the file and get back the original video. I believe it's in the container, just incorrectly labeled as 1920x1080x50 hevc video.

    


    I believe I should export the audio and video streams, cut away the first frames from both streams up to the point where the first clip ends, then change the format of the video stream and finally put them back into container.

    


    I'm not sure what tools and commands to use the cut the video stream and what commands and tools to use force the correct video format on the stream.

    


    I've read ffmpeg documentation but it's vast and my use case isn't directly covered. I'm planning to play around with different tools, but I'm new to the subject and thought to ask first.

    


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