Shell script that uses twurl to upload a chunked native video to Twitter.

splittwit.sh

file=""
tweet=""

if [ -n "$1" ]
then
 file="$1" 
else
 echo "Usage: splittwit /path/to/video.mp4 \"My tweet goes here!\""
 exit
fi 

if [ -n "$2" ]
then
 tweet="$2" 
else
 echo "Usage: splittwit /path/to/video.mp4 \"My tweet goes here!\""
 exit
fi 

length=`ls -nl $file | awk '{print $5}'`
chunks=$(( 1 + $length / 5242880 )) # max chunk size is 5MB

echo "Splitting file of length $length bytes into $chunks chunks"
split -n${chunks} -d ${file} split_

echo "Getting media ID from Twitter"
media_id=`twurl -H upload.twitter.com "/1.1/media/upload.json" -d "command=INIT&media_type=video/mp4&total_bytes=${length}" | sed -r 's/\{"media_id":([0-9]+).*/\1/'`
echo "Received media ID $media_id"


for ((i=0; i<chunks; i++))
do
  echo "Uploading chunk $i"
  twurl -H upload.twitter.com "/1.1/media/upload.json" -d "command=APPEND&media_id=${media_id}&segment_index=${i}" --file ./split_0${i} --file-field "media"
done

echo "Finalizing upload"
twurl -H upload.twitter.com "/1.1/media/upload.json" -d "command=FINALIZE&media_id=${media_id}"

echo -e "\nTweeting!"
twurl "/1.1/statuses/update.json" -d "status=${tweet}&media_ids=${media_id}"

He, I am trying to upload videos to twitter programmatically, so I came across your script. It produces the same error then the one I rote which is:
Splitting file of length 4980087 bytes into 1 chunks
Getting media ID from Twitter
Received media ID 724933006197137408
Uploading chunk 0
/usr/lib/ruby/1.9.1/net/protocol.rb:146:in rescue in rbuf_fill': Timeout::Error (Timeout::Error) from /usr/lib/ruby/1.9.1/net/protocol.rb:140:inrbuf_fill'
from /usr/lib/ruby/1.9.1/net/protocol.rb:122:in readuntil' from /usr/lib/ruby/1.9.1/net/protocol.rb:132:inreadline'
from /usr/lib/ruby/1.9.1/net/http.rb:2562:in read_status_line' from /usr/lib/ruby/1.9.1/net/http.rb:2551:inread_new'
from /usr/lib/ruby/1.9.1/net/http.rb:1319:in block in transport_request' from /usr/lib/ruby/1.9.1/net/http.rb:1316:incatch'
from /usr/lib/ruby/1.9.1/net/http.rb:1316:in transport_request' from /usr/lib/ruby/1.9.1/net/http.rb:1293:inrequest'
from /usr/lib/ruby/1.9.1/net/http.rb:1286:in block in request' from /usr/lib/ruby/1.9.1/net/http.rb:745:instart'
from /usr/lib/ruby/1.9.1/net/http.rb:1284:in request' from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/oauth_client.rb:118:inperform_request_from_options'
from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/request_controller.rb:13:in perform_request' from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/request_controller.rb:9:indispatch'
from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/abstract_command_controller.rb:7:in dispatch' from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/cli.rb:38:indispatch'
from /var/lib/gems/1.9.1/gems/twurl-0.9.3/lib/twurl/cli.rb:21:in run' from /var/lib/gems/1.9.1/gems/twurl-0.9.3/bin/twurl:4:in<top (required)>'
from /usr/local/bin/twurl:19:in load' from /usr/local/bin/twurl:19:in

'
Finalizing upload
{"request":"/1.1/media/upload.json","error":"Segments do not add up to provided total file size."}
Tweeting!
{"request":"/1.1/statuses/update.json","error":"Read-only application cannot POST."}

Maybe you can help me! You find all the details in the output above!

Thanks in advance!