coil: [coil-video] Fails to load preview for video

Describe the bug When I’m trying to load preview for video that I picked from my device I’m getting an exception:

2020-05-22 23:40:14.907 27387-27387/com.example.android I/System.out: load uri: content://com.android.providers.media.documents/document/video%3A158545
2020-05-22 23:40:14.956 27387-27462/com.example.android D/skia: --- Failed to create image decoder with message 'unimplemented'
2020-05-22 23:40:14.956 27387-27462/com.example.android D/skia: --- Failed to create image decoder with message 'unimplemented'
2020-05-22 23:40:14.965 27387-27387/com.example.android I/RealImageLoader: 🚨 Failed - content://com.android.providers.media.documents/document/video%3A158545 - java.lang.IllegalStateException: BitmapFactory returned a null Bitmap. Often this means BitmapFactory could not decode the image data read from the input source (e.g. network or disk) as it's not encoded as a valid image format.
2020-05-22 23:40:14.967 27387-27387/com.example.android E/RealImageLoader: java.lang.IllegalStateException: BitmapFactory returned a null Bitmap. Often this means BitmapFactory could not decode the image data read from the input source (e.g. network or disk) as it's not encoded as a valid image format.
        at coil.decode.BitmapFactoryDecoder.decode(BitmapFactoryDecoder.kt:177)
        at coil.RealImageLoader$loadData$2.invokeSuspend(RealImageLoader.kt:349)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
2020-05-22 23:40:17.922 27387-27523/com.example.android V/FA: Inactivity, disconnecting from the service

Expected behavior Would like to see thumbnail

To Reproduce The code is pretty standard


val imageLoader = ImageLoader.Builder(requireContext())
            .componentRegistry {
                add(VideoFrameFileFetcher(requireContext()))
                add(VideoFrameUriFetcher(requireContext()))
            }
            .build()

val request = LoadRequestBuilder(requireContext())
                .data(uri)
                .videoFrameMillis(2000)
                .target(myImageView)
                .build()
            imageLoader.execute(request)

Version coil-version 0.11.0 Android 9 coil-video is added

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 20 (4 by maintainers)

Most upvoted comments

how to make such a concept in compose ? remember function of painter do any one have the answer?

yehia2030 on Feb 8, 2022

@OhhhThatVarun OK thanks.

AndroidDeveloperLB on Jul 18, 2021

Good point - I’ll add a section to the docs about it.

As for video frames from a url, I’d like to, but I don’t think it’s possible. MediaMetadataRetriever requires the ability to read backwards and forwards in a source. We can handle short backwards reads by buffering them into memory, however even small video files (10MB) would consume a lot of memory to decode. Large video files would throw an out of memory error easily. By restricting it to file/uris only we avoid having to buffer into memory.

colinrtwhite on May 23, 2020

VideoFrameFetcher relies on the file’s extension to automatically handle video files. Since your URI doesn’t have an extension, you’ll have to set the fetcher explicitly for the request:

val request = LoadRequestBuilder(requireContext())
                .data(uri)
                .videoFrameMillis(2000)
                .target(myImageView)
                .fetcher(VideoFrameUriFetcher(requireContext())
                .build()
imageLoader.execute(request)

colinrtwhite on May 23, 2020