4GB filesize limit

[Vangelis forthnet]

On Fri Feb 14 12:50:52 GMT 2014, dinkypumpkin wrote:

>The only way I know to potentially complete the download
>in one go is to use a small hack to rtmpdump

One completely different approach is to use an rtmp downloading
tool that is not based on rtmpdump or librtmp.
One free such tool is "FreeRapid Downloader" (FRD):

http://wordrider.net/freerapid/download.html#mirrors

This is written in Java (min version JRE 6) and instead of
rtmpdump it uses an "rtmp.frp" plugin; bbciplayer VOD
content is handled by a separate bbc.frp plugin (latest version
is 1.1.7) - by default, this fetches the highest available quality
for a stream, you can still choose lower qualities from within
this plugin's options. Sadly, live streams can't be dumped.

With latest version 0.9u3, installed Java 7u51 on a Win32 OS
and the latest versions of needed plugins, the opening ceremony
in HD (use this URL in FRD
http://www.bbc.co.uk/iplayer/episode/b03tvhy0/ )
downloaded all in one go (in about 1h15min from my
location, over wi-fi) producing a perfectly playable 4.02 GiB
.flv file (identical to the one dinky saved with his modded rtmpdump).

I then proceeded to remux the flv file to an .mp4(v2) one using a
combination of FLVExtractCL (CLI version of FLVExtract) and
MP4Box (see attached batch file - extension changed to .txt;
to use change it back to .bat), and ended up with this:

Format                           : MPEG-4
Format profile                   : Base Media / Version 2
Codec ID                         : mp42
File size                        : 4.01 GiB
Duration                         : 3h 59mn
Overall bit rate                 : 2 399 Kbps
Encoded date                     : UTC 2014-02-13 01:41:44
Tagged date                      : UTC 2014-02-13 01:41:44
Writing application              : 
MP4Box-0.4.6-dev-ir5-x86-shared.Kurtnoise.12-Jun-2010

Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High at L4.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 2 frames
Codec ID                         : avc1
Codec ID/Info                    : Advanced Video Coding
Duration                         : 3h 59mn
Bit rate mode                    : Variable
Bit rate                         : 2 302 Kbps
Maximum bit rate                 : 3 500 Kbps
Width                            : 1 280 pixels
Height                           : 720 pixels
Display aspect ratio             : 16:9
Frame rate mode                  : Constant
Frame rate                       : 25.000 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.100
Stream size                      : 3.85 GiB (96%)
Title                            : AVC Video Stream
Language                         : English
Encoded date                     : UTC 2014-02-13 01:41:44
Tagged date                      : UTC 2014-02-13 01:48:07

Audio
ID                               : 2
Format                           : AAC
Format/Info                      : Advanced Audio Codec
Format profile                   : LC
Codec ID                         : 40
Duration                         : 3h 59mn
Bit rate mode                    : Variable
Bit rate                         : 93.5 Kbps
Maximum bit rate                 : 95.4 Kbps
Channel(s)                       : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 48.0 KHz
Compression mode                 : Lossy
Stream size                      : 160 MiB (4%)
Title                            : AAC LC Audio Stream
Language                         : English
Encoded date                     : UTC 2014-02-13 01:47:23
Tagged date                      : UTC 2014-02-13 01:48:07

 {I prefer MP4Box remuxing (-brand mp42) to the FFmpeg one,
because the mp4(v2) files MP4Box produces are more compact
than the mp4(v1) FFmpeg yields.}

 Yes, I KNOW this post may have little to do with get_iplayer,
but I thought it'd be useful for some to share this nice and simple
tool for the once-every-2-years case a > 4.0 GiB file needs to be
recorded in one chunk...

Regards 
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