how to manipulate data of SimpleBlock in mkv

[LoverOfSadness]

i have a mkv file which is encrypted only SimpleBlock part (AES-128-ECB)

i want to decrypt it how to do..??

[tonihei]

This is similar to existing questions like #662. You essentially need to provide your own DataSource that reads encrypted bytes and decrypts them in the read method. There are some existing (untested) implementations you can find on the internet.

[ghost]

i'm talking about a section of file not whole file

[ghost]

com.google.android.exoplayer2.extractor.mkv.MatroskaExtractor.java

[tonihei]

ExoPlayer already supports the ContentEncryption and ContentEncoding blocks to tell the decoder that the sample data needs to be decrypted. It's a bit unclear to me what exactly is not working and if this is something that should be supported according to the Matroska specification.

If you have a non-spec-compliant way to encrypt individual blocks, you probably need to inject your own copy of MatroskaExtractor that handles the custom logic at the point we you need it.

[tonihei]

Closing due to inactivity.