[FFmpeg-user] mp4 generate moov atom at beginning of recording

Robert Krüger krueger at lesspain.de
Mon Aug 19 18:13:56 CEST 2013

On Mon, Aug 19, 2013 at 4:39 PM, Tom Evans <tevans.uk at googlemail.com> wrote:
> On Sun, Aug 18, 2013 at 3:04 AM, simon mares <simon.mares at gmail.com> wrote:
>> Hello, is it possible to generate a pre-defined moov atom for fixed lenght
>> of fe. 8 hours with use of
>> http://ffmpeg.org/ffmpeg-all.html#MOV_002fMP4_002fISMV arguments? Video
>> would never be seeked beyond the real duration, as I would not allow.
>> Reason for doing this is that I'm experimenting with something and I would
>> like to playback the file that I'm still recording, so it's kind of a
>> live-streaming, but it's only used locally. As I'm only transcoding from .ts
>> to .mp4 file no CPU is used, this is also my goal.
>> Codec is h264, 720p, 25pfs. Video is generated with blackmagic pro-recorder.
> Just use "-movflags faststart".
Are you sure this will result in a file he can play back while it is
being written? If the docs are correct, I doubt it will.

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