Archive for the ‘mp4’ Category

Convert FLV Video Files

Monday, July 22nd, 2013

To convert from [.flv] to another format, use VLC Media Player’s [Media > Convert/Save] option.  Be sure to set the destination as well as the source.  VLC can only convert to formats in its own internal container and codec sets, but e.g. can convert to [.mp4] containing H264.

Thereafter can use e.g. Sony Vegas to generate e.g. [.avi] containing CFHD, e.g. for onward use in applications that don’t recognize mp4-h264.  Vegas is more accommodating and flexible than (straight use of) Adobe Media Encoder, as regards non (broadcast) standard frame sizes and proportions.  Conveniently, Vegas automatically matches the Project to the footage on footage-import.

Prior to that, I tried installing and using Riga, the two-way FLV convertor, but it didn’t work on  my Window 7 (64-bit) machine,  opening only a blank window where a GUI was expected, and both the downloader and installer were both full of bloatware (NB needed to install in Advanced mode in order to avoid some of that).  Pointless…

XDCAM-EX to ProRes: How

Saturday, December 10th, 2011

I have a Sony XDCAM-EX clip at 1280x720p25 to be transcoded to ProRes, so it can be used as source for iMovie (for another user on another machine).

In principle it should be very simple: go on Mac, use Compressor to transcode the XDCAM footage to ProRes.  But as usual, things are pernickety…


  • First tried dragging the XDCAM [.mp4] file into compressor.
    • Not recognised.
    • Likewise the BPAV folder.
  • Next, I transcoded the XDCAM footage to “MXF for NLEs” format, using the Mac version of Sony Clip Browser
    • Not recognised.
  •  Next, opened the XDCAM Transfer app.
    • In this app, open the XDCAM’s BPAV folder.
    • The footage displays OK but how do I export it to a QuickTime [MOV] file?
    • Looks like I can’t.  It only offers to export to an [MP4] file.
    • Instead, I guess I’ll have to open it from FCP.
  • FCP
    • I opened a random existing FCP project.
    • The footage is 720p but the project/sequence settings are arbitrary (unknown to me)
    • FCP: File > Import > Sony XDCAM…
    • It imported to somewhere … but where?
    • FCP Browser: file > RightClick > Reveal in Finder
    • It was at [/Volumes/GRm HFS+/_Media/_Projects/2010-05-30 (Esp) Alison Doggies/020 Source/Sony XDCAM Transfer/SxS_01]
  • File System:
    • In other words, at whatever destination was last used by some app – presumably XDCAM Transfer or possibly FCP
    • The destination path was in fact specified in XDCAM Transfer, under its Menu: [XDCAM Transfer > Preferences > Import]
    • Moved the file instead to [/Volumes/GRm HFS+/_Media/_Projects/2009-11-22 (JRM) Lady of the Silver Wheel]
  • Compressor:
    • Open it in Compressor
      • Drag it to the “job-strip” (my term) in Compresor.
    • Compressor displays data about that clip (e.g. 1280×720, 25 fps)
    • Select jobstrip settings:
      • Select Setting
        • Settings: Apple > Formats > QuickTime > Apple Pro
          • Name: Apple ProRes 422
          • Description: Apple ProRes 422 with audio pass-through. Settings based off the source resolution and frame rate
      • Apply (Drag) Setting to Jobstrip
    • Destination
      • Leave destination unspecified.  Then it will be the same folder as Source.
    • Processing (transcoding) of this footage (1280x720p25) took about 3 minutes (on MacBook Pro 2009).
    • Result was not that much bigger than the original:
      • Originally recorded [.MP4] file: 1.19 GB
      • Rewrapped [.MOV] from XDCAM Transfer: 1.14 GB
      • ProRes [.MOV] from Compressor: 1.97 GB

Convert [.flv] to [.mp4]

Monday, December 27th, 2010

How convert a [.flv] file to a [.mp4] file?