michaelelleby/ffmpeg-farm

Distributed FFmpeg transcoder

ffmpeg-farm's Issues

Verify output file

Check output files for

• Codec errors
• Video blocks
• Blank frames where they should not be blank

Add chunked encoding for H264

This will allow distributed encoding and massively parallel, with the goal of encoding a 3 hour video in 5 minutes.

Implement State pattern

https://en.wikipedia.org/wiki/State_pattern

Video code should be updated to the massive restructuring made by audio transcoding

Add support for subtitles

Add chunked encoding for H265

This will allow distributed encoding and massively parallel, with the goal of encoding a 3 hour video in 5 minutes.

Implement support for 2 pass H264 encoding

http://trac.ffmpeg.org/wiki/Encode/H.264#twopass

Client should send status updates through a message queue

The controller service should then continuously poll that queue and update statuses in the database.
This would help prevent overloading the database and causing deadlocks due to many updates to the same rows simultaneously.

Validate input file before starting encoding

This can save a lot of wasted processing power, if the input file has an error 95% into the file the error will only be detected after encoding the first 95% of the file. The 95% encoded file will then be discarded and the resources are wasted.

Add H265/HEVC support

Abort job when receiving specific status update reply

Controller API should be able to tell a client to abort a job. This is useful when a job gets cancelled or a job is reassigned to another client.

Implement support for chunking source file before encoding

Using ffmpeg -i source.mxf -c copy -map 0 -f segment -segment_list output_segments.list -segment_time 60 destination%03d.mxf

This would eliminate the need for using -t and -ss as each source file would be the entire length of the segment

The audio will still need to be encoded as one single file without any muxing

Temporary output path should be overridable

• If the commandline parameter TEMPFOLDER is provided, that will be used
• Otherwise If the environment variable FFMPEG_TEMPFOLDER is set, that will be used
• If neither is provided, use system default temp folder

Add support for MPEG DASH for H264

Implement per-title-encoding

Inspired by this Netflix article implement support for encoding many bitrates and select only a few, which provide the best quality for the least bitrate.