MXF to MOV

[max.pi...@gmail.com]

I prefer editing in Premiere on Windows, but I'm working with a studio that's in the stone ages with FCP7.

I found the following script to rewrap MOV to MXF using ffmbc, but now that I've done my editing I need to rewrap the MXF Premiere created back into MOV.
How can I 'reverse' this script?

@ECHO OFF

for %%a in (*.mov) do ffmbc -i "%%a" -vcodec copy -acodec pcm_s16le -ac 1 -map_audio_channel 0:1:0:0:1:0 -f mxf -y "%%~na".mxf -acodec pcm_s16le -ac 1 -map_audio_channel 0:2:0:0:2:0 -newaudio

[bouke]

[max.pi...@gmail.com]

I've been successfully able to use this command to rewrap MXF to MOV, but according to Media Info, the video bitrate drops from ~35Mbps to ~25Mbps. Any idea why this is happening? I thought it was supposed to be just a rewrap with no encoding.

@ECHO OFF

for %%a in (*.mxf) do ffmbc -y -i "%%a" -vcodec copy -map_audio_channel 0:1:0:0:1:0 -map_audio_channel 0:2:0:0:1:1 -acodec pcm_s16le -ac 2 -f mov "%%~na".mov

[Baptiste Coudurier]

Hi,

On 10/02/2012 07:32 AM, max.pi...@gmail.com wrote:
> I've been successfully able to use this command to rewrap MXF to MOV, but according to Media Info,
> the video bitrate drops from ~35Mbps to ~25Mbps. Any idea why this is happening? I thought it was
> supposed to be just a rewrap with no encoding.

Was the audio in input 24 bits ? You re-encoded it to 16 bits, so the global bitrate
will be lower.

--
Baptiste COUDURIER
Key fingerprint 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA
FFmpeg maintainer http://www.ffmpeg.org

[Max Pittsley]

That is a good point, the source audio was 24. I'm using Media Info to view the final bitrates, however, and the program shows audio and video bit-rates separately. It specifically states that the video stream is suffering a massive 10Mbps drop >.>

Of course 25Mbps still looks pretty flawless to the average viewer. In our case we probably have fewer than 10 viewers at a time. So it's not a huge deal, but still a mystery without an answer.

[Baptiste Coudurier]

Hi Max,

On Oct 12, 2012, at 9:55 AM, Max Pittsley <max.pi...@gmail.com> wrote:

That is a good point, the source audio was 24. I'm using Media Info to view the final bitrates, however, and the program shows audio and video bit-rates separately. It specifically states that the video stream is suffering a massive 10Mbps drop >.>

Of course 25Mbps still looks pretty flawless to the average viewer. In our case we probably have fewer than 10 viewers at a time. So it's not a huge deal, but still a mystery without an answer.

Well IIRC the 35 XDCAM is VBR and is probably padded at the mxf layer or something, the rewrapping removes that padding.

If you can send me a file, I can tell you exactly why

[abaga...@gmail.com]

try abettersoft MXF Converter for mac, great tool for converting MXF video to nearly all the popular video formats. here is the detailed guide: http://www.abettersoft.com/how-to/convert-mxf-to-quicktime-mov.html